Category Archives: Transmitter

WT8WV “Colossus” Air Cannon Antenna Launcher

20171229_165353

These are the basic parts to make my “WT8WV Colossus” antenna launcher.

Folks, this has been a fun and hilarious winter project.  Yesterday, when I built this air cannon antenna launcher it was -4 degrees outside and this was a perfect evening project to put together.  For years, me and my two ham radio buddies (WR8S Bill Shultz and WV8TG Tom Graf), have enjoyed ARRL Field Day activities and usually used a slingshot and a 3/4 ounce fishing sinker weight and an old Zebco fishing reel (with 20 pound test line) to shoot and suspend our doublet dipole antennas high into the trees.  Certainly, the slingshot worked pretty much flawlessly… but… boys will be boys, and the idea of an air cannon / spud launcher / potato gun type system seemed to be a new desire.  (Most people, our wives included, wouldn’t trust our 3-man team with a slingshot, let alone a potato gun!  But I digress.)  Actually, our local ham radio club (Monongalia Wireless Association) had a version of a potato gun antenna launcher, so we decided we needed one of our own… and to make some design modifications in the interest of… “science”… plus our own sadistic pleasures.  (Make sure you read below WV8TG’s initial “pressure test” experience.)  The following pictures hopefully provide the basic concept and parts we used.  Tom and I split the cost of the parts needed to make launchers and each built our own version, but they both are the same basic design with only length dimensions of the air chamber and barrel being the difference.

All parts where sourced from our local Lowes store in their plumbing department, except the Schrader valve which can be purchased at an automotive store.  Total cost about $40 but you could make a couple of them as a joint project with a friend and reduce that cost per launcher a bit.  I got a small rubber gasket for the outside nipple of the Schrade valve to act as another seal on the exterior of the air chamber.  You will need to drill holes for Schrader valve, barrel slug stop and projectile slug caps to attach the screw eyes to attach the fishing line.  I used 3 inch PVC for air chamber, 1.25 inch PVC for the barrel and short sections to mate the air chamber, trigger valve and threaded barrel.  The projectile slugs were made from 3/4 inch PVC and caps and I filed off the nubs on the caps with a Dremel tool for a smooth fit into the barrel.  I used PVC Prep on each joint before applying the glue.  When gluing joints together, insert the sections together and twist a quarter turn for a solid adhesion.  Let all glue set up for 24 hours before testing air pressure chamber.  I will pressurize the chamber inside and let it sit overnight to see if it loses any pressure.  It’s too cold right now to take outside in -4 degree temperatures to test, but I will use a bicycle pump with a pressure reading valve, and start at 40 psi… then 50 psi… and then 60 psi for test shots to see how it functions and check for any air pressure leaks.  We use 60 psi for our club launcher.

WV8TG (Tom) charged his air chamber (barrel not attached) and let it set overnight to test for chamber air leakage.  When he opened the trigger value… there was NO leakage… but there was a sudden LOUD release of 60 psi air gush out of a 30 inch long, 3 inch wide fully charged air chamber.  He indicated the compressed air release was… impressive.  However, his wife was not impressed… nor was she aware of the scientific test that was taking place.  #surprise!  #WHOOOOOOOSH  #loudwifeexpressions  I have no reason to doubt Tom will find his projectile slugs in the next county using his design.  The club chamber was 12 inches long versus his 30 inch air chamber.  #overkill?  I designed my air chamber for 14 inches and will conduct all tests… outside.  #potentialmeanwife

 

 

 

 

Advertisements

Perfect CW / Morse Code Trainer

This program G4FON Koch CW Trainer has been a joy to play with and learn from.  I am wanting to increase my Morse Code speed skills and this is a perfect way to do that!  I am wanting to get back into CW but have gotten rusty from not practicing for years.  I seem to be stuck at copying  about 7 words per minute.  My goal is 20+ words per minute so I can help rack up more points at Field Day events!  The key, I have now found, is to HEAR letters at 25 words per minute… but at a longer spacing between them when received, and then begin shortening that spacing time over a period of practice sessions.

koch_display

I have it set to send the individual letters at 25 words per minute (wpm).  I am starting at the time between those letters at 10 wpm.  I started with two letters and would copy just those two for a few minutes in one minute drills.  Once I get to 90-100% copy, I add another letter!  I practice about 15 minutes each night, if I can.  I am halfway through the alphabet now and having a ball.  It is easy to download and configure… you’ll be instantly surprised at how much fun it is!

You Need Your Own QSL CARD

WT8WV QSL

I know, I know… we have QRZ and eQSL and LOTW (Logbook of the World) and Ham Radio Deluxe (HRD) and Netlogger and N1MM and… blah, blah, blah.  An old fashioned paper QSL card is still sweet to hold in your hand and to enjoy the real memory of a fun contact. Especially if it’s a DX station from a far away land toward DXCC or the last state you needed for WAS.

They aren’t as expensive as you think.  For simple black and white cards you can buy 100 cards for about $12… my color card above cost about $30 for 100 of them.   I got mine from Cheap QSL’s on the internet and they sent the proofs the same day and shipped them out the same day!  Most folks are migrating toward electronic QSL’s these days.  I predominately use Ham Radio Deluxe (HRD) Logbook for my main logging software but also upload my logbook to eQSL, QRZ and LOTW every couple days of logging, however if someone requests a paper card I will oblige.  Sooooooooo… if I do that once in a while I’ll have about 65 cents in the effort by the time I add postage.  Below is a Special Events Station I worked and got this electronic QSL a few days later…

WT8WV-Tesla4-N2T

 

Merle Taylor: Maven of Morse Code

Such a great story!  Click link below after reading first few paragraphs for the full story and pictures.  (by Elinor Florence)
1._Merle_doing_code_feature

When this Manitoba farm girl joined the Royal Canadian Air Force, she proved to be such a whiz at Morse Code that she was assigned to instruct the air crews. Now almost ninety-three, Merle still practices her dots and dashes every day, claiming that Morse Code keeps her mind sharp.

Merle Taylor of Lochaber, Nova Scotia, wrote to me after reading my column in The Senior Paper, a newspaper widely distributed to seniors across Canada. (If you haven’t seen a copy yet, email me for more information).

We exchanged copies of our books – I sent her my wartime novel, Bird’s Eye View; and she sent me a copy of her memoirs, Until the Cows Come Home.

When my husband and I travelled to the Maritimes recently, I was determined to meet Merle in person. We found her still living on the farm she operated with her husband Fred since 1946, about thirty kilometres south of Antigonish.

After serving lunch to us, Merle took me on a farm tour in her electric golf cart. I loved hearing her stories of life in the air force, and in the decades since then.

Programming Your New Ham Radio… the Easy Way!

ADMS_M100_U_2__89502.1447692865.220.220

downloadI recently took a deeper dive into digital ham radio and picked up a Yaesu FTM-100 mobile System Fusion rig.  VHF and UHF… 500 Channels on each band!  Holy Crap, Batman…  I’ll wear my aged, stubby, fat fingers to the nubs tryin’ to poke all that individual channel info into those 1,000 spots using those little buttons!  Plus, I have to look up all that info… somewhere… on EVERY channel I want to add to my line-up.  Ain’t no-body gotz time for dat!  (I also had to do that with my Baofeng UV-5RV2+ portable HT a couple years ago.)

What to do?  Path of least resistance!  Did a little research and found a computer program that does it all for me.  (I actually used the free CHIRP software to program my HT a couple years ago.)  RT Systems software makes the programming easy!  You simply pick out your software version based upon what radio you want to program, download the software, (Hopefully your radio came with the right interface cable to hook your radio to your computer to make the download of freq’s to your rig.), grab the repeater frequencies from some site like RFinder World Wide Repeater Directory and in 20 minutes you can load up your rig with more frequencies than you will ever use.  (While CHIRP is freeware, RT Systems and RFinder software platforms are paid versions.  I can honestly say that the software is very reasonably priced for both and you might only need to use it once in a while but it saves you HOURS of manual poking and prodding your radio buttons.)

(Click link below to see the typical instructions)

Radio Programming Software for the Yaesu FTM-100

(See the videos below…)

You can easily marry RT Systems software to RFinder software and quickly create a sort routine that grabs the EXACT frequencies you want and transfer it to your radio.  You can sort by town, state, zip code, ham bands, NOAA frequencies, etc.  

It makes short work of all of it!  You’ll spend more time convincing yourself to not pull in frequencies you will never use than the download takes!  

Once you set up your channel database you want to use for your radio, you simply hook your radio to your computer with the cable… poke a couple drop-down menus… and then the magic happens!  UPLOAD COMPLETE.  

I programmed about 75 VHF and 75 UHF Channels into my radio, start sort to finish sort to upload compete in under 20 minutes.  You might export your databases to your laptop or website to store for the future.

One thing I did that sort of brought sanity to my programming strategy and thinking was that I added the freq’s in sort of “banks” of channels so I could visually sense what channels I needed to tune to depending on my car’s location as I traveled.  For the first 10-15 channels, I loaded repeater data for the local area repeaters within about 75 miles of my home QTH.  I live just below the Mason-Dixon Line…  and yes, I consider myself a southerner but I can be in Pennsylvania within 10 minutes; in fact, I can be at the Pittsburgh International Airport in under 90 minutes!  So, since I travel a good bit for work, I can bounce to various repeaters as I drive in any direction!

In the next grouping of channels I might add just the Pittsburgh area repeaters.  In another group of channels I added the Dayton, OH repeater freq’s since my daughter and son-in-law live and work next to Wright-Patterson AFB and I also usually attend the Dayton Hamvention each year.  Another group of channels I include are the NOAA Weather Channels.  Other groupings include various regions of West Virginia since I also hunt, fish, camp and hike all over the place.

 

Morse Code: Straight Key and Others

I enjoy a niche of ham radio called Continuous Wave (CW) / Morse Code sending and receiving.  There are all sorts of hand keys out there to use.  Lots of CW Contests occur every month for all levels of CW enthusiasts… you don’t have to send fast, if you don’t want to!  It’s a very efficient system of communicating when traditional modes of messaging are out of service, too.  Some say since the advent of the telephone and then the cellphone, it is a dying art… I say it’s a BLAST to do!

Every ham ought to try a little CW every once in a while.  Find a key you like and use it periodically to stay proficient but also pick up a straight key and join the annual Straight Key Night Contest around New Years.  (It’s not really a contest; it’s more of an opportunity to pull out a straight key and try sending Morse Code the old fashioned way.

I love to scour the hamfest flea markets looking at all the old time keys available to buy for a variety of prices.  Some served in Post Offices, Telegraph Offices, military communications, in combat and in ham shacks!  My favorite straight key is a 1950’s era South African Special Forces straight key… super compact… light weight… and darned cute… that I picked up at the Dayton Hamvention in 2015!  It wasn’t cheap, but it’s unique and has a good story.  See some of the key configurations below…

Morse Code: Dual Lever Paddle Adjustment Tutorial

K7QO MFJ-564B Dual Lever Paddle Adjustment Tutorial

K7QO Chuck Adams website

This is an excellent explanation of the taxonomy of a dual lever paddle (i.e. Bencher and MFJ) and how to make the adjustments that are critical for efficient CW / Morse Code sending in your ham shack.

The alphabet in Morse Code / CW sent at 20 words per minute (wpm)…

 

Make your own Dipole Antenna

Randy does such a good job of explaining how to make your own 10 Meter Dipole.  Get on the air… 10 meters is a fun band when the sun cooperates!

What is a Ham Radio Repeater?

Excellent introduction and explanation of “What is a Ham Radio Repeater?”

Comparing the Yaesu System Fusion FT1Dr and FT2DR

Yaesu FT1DR Review

Yaesu  FT2DR Review

DR-1X System Fusion Repeater and the HRI-200 WiresX

A nice video showing the basics of the setup with the HRI-200 and the Yaesu DR-1X System Fusion repeater.

Yaesu System Fusion Introduction

This is a good introduction video for anyone curious about Yaesu’s efforts in digital communications at the local repeater level.  It also sets aside some fears and misunderstandings about amateur radio operators making the decision to add or upgrade to digital from analog… you can do both!

2016 Dayton Hamvention Post-Mortem

Well… another Hamvention is in the books and it was the usual great time of fun and friendship.  WR8S  (Bill Shultz) and WV8TG  (Tom Graf) and I enjoyed three fun-filled days scouring the Flea Market and also inside Hara Arena for all sorts of treasures and trinkets.  Tom scored a pristine 1959 Hammerlund HQ-One Forty Five short-wave radio and several other vintage radios to restore.  (The Hammerlund was the first serious short-wave radio Tom bought and it eventually led him on the journey to get his Amateur Extra Class license!)  Bill and I invested in a couple Yaesu FTM100-DR System Fusion digital mobile radios so that we can explore the Monongalia Wireless Association’s new System Fusion repeaters here in the Morgantown, West Virginia area.  Below is a video recap of our annual trek to the Dayton Hamvention.  If you have never attended a Dayton Hamvention… GET THERE!  Enjoy!

APRS… from the inventor, Bob Bruninga WB4APR

I would venture to say you can’t do better than hearing it from the inventor himself!

Published on Oct 19, 2015

Automatic Packet Reporting System overview by its inventor, Bob WB4APR given at the HACDC Amateur Radio Club. For more information about APRS, go to http://www.aprs.org For more information about HACDC Amateur Radio Club go to http://www.w3hac.org

Complete Overview of MESH for Amateur Radio (2014) by VA3BCO

MESH communications in Ham Radio is another area where Amateur Radio pushes the edge of the envelope and  has put a tremendous amount of work into this slideshare that goes from A to Z on how to run a MESH!  (Click on his website for more!)

Originally published on Nov 6, 2014

This is a comprehensive introduction to MESH for amateur radio enthusiasts. It is particularly useful for anyone new to MESH but will also include some nuggets sure to be helpful to the experienced operator. Topics include:

1. HSMM MESH vs. traditional digital modes
2. Router review & comparison
3. Firmware selection & configuration
4. Antenna considerations
5. Application scenarios for ARES and experimentation
6. Updates on local efforts & recent software announcements

Visit VA3BCO.COM for more details.

APRS… Automatic Packet Reporting System

The thing I absolutely LOVE in this wonderful hobby of Amateur Radio is that there are so many diverse niches to explore!  Everything from building your own radio, working through satellites in orbit, transmitting your own slow or fast scan TV signals, Morse Code working over 300 countries in the world on less than a half of a watt of power, emergency response, tons of digital modes, bouncing signals off of the moon, ricocheting your signals off of an excited aurora… basically, if you have an idea on getting a signal transmitted or received to someone you can invent your own technology!

Automatic Packet Reporting System (APRS) combines ham radios, GPS and tiny computers to report your location, regardless if you are standing on a street corner, in a moving car on the highway, camping, hiking, boating, balloon tracking, airplanes or even in space!  Believe it or not, your own cellphone can serve as the computer part, software and GPS .  Check out this slideshare from  on the nuts and bolts of this fun segment of ham radio.  (Click on his name above and check out his other presentations!)

REVIEW: Yaesu Fusion FT2DR dual-band digital portable radio

ft2d_thumb

This is a solid review by Don Trynor from VA3XPR from July 2015 of the Yaesu FT2DR dual-bander HT.  (They have a very nice website!)

Our local ham radio club, Monongalia Wireless Association, recently bought 2 of the Yaesu Fusion repeaters and I am doing my own research into being able to enjoy a new type of technology. I am looking at my options and hope to find something to get my hands on at the 2016 Dayton Hamvention!  I would think that prices would be moderating downward by now as others adopt the new radio and there may be some rebates floating around or “Specials” by some of the dealers.  (Read Don’s full review here…  Review: Yaesu Fusion FT2DR dual-band digitl portable radio )

The FT2DR is a good choice for anyone looking for a full-featured dual-band portable radio that is compatible with Yaesu’s Fusion line of digital radios. While this radio has some innovations, we think that they may not justify the $550 USD price point of this unit. In addition, we feel that Yaesu could improve upon future radios like this one, especially as it relates to the overall user experience. In this day and age when a good user experience for touch screen devices is the norm, such as with smartphones and computers, we think devices like this have room for improvement. All in all, if users can live without the touch screen display and louder audio, they might want to consider a cheaper alternative in the Yaesu FT1DR, which retails for $300 USD.

WinLink… What is it?

K4REF tells us from his YouTube Channel the basics of this interesting technology that we can use as Amateur Radio Operators.  It is most likely very similar to a technology we use daily… away from our radios!

 

Amateur Radio Go-Box and Go-Bags Examples

Ham Radio Operators need to be ready to roll out to a crisis quickly if it requires communication support.  Are you ready to “grab and go”?  How quickly could you have a functional ham radio station on-the-air ready to support an emergency situation?  Could you support your local authorities efforts, and for how long?  Can you personally sustain yourself with food and water for 3 days of support, without being a burden on the emergency relief efforts?  Constructing your own version of a “Ham Radio Go-Box” and a “Go-Bag” might be a great addition to your preparedness efforts.  Below are some pictures of potential Go-Boxes to stir your imagination and creativity.  You might even have some of the items laying around that could be put into the effort to BE PREPARED.

GO-BOX IDEAS

GO-BAG IDEAS

How Does a Crystal Radio Set Actually Work?

Here is an excellent YouTube video from RimstarOrg that breaks down the concept of how crystal radios actually DO their magic!  Yes, MAGIC.  Radio signals are all around us 24 hours a day.  Invisible!  You can’t really touch them.  You can’t smell them.  You can’t hear them without assistance.  We don’t really feel them bombarding us.  We don’t sense those signals without some mechanical help… but they strike us with many different frequencies constantly… so let’s explore the range of frequencies we can decipher with a homemade crystal radio set!

Straight Key Night… FUN!

Every January 1st there is a fun filled evening of laid back, “no pressure” CW (Morse Code) operating using a simple “Straight Key” to key your transmitter without the aid of added electronics to perform the speed and spacing of your sent letters and numbers.  This isn’t a contest!  It is designed for fun sending CW the “old fashioned” way.  The object is to simply enjoy sending and reading Morse Code.  There are numerous configurations and sizes of straight keys and a jaunt down any ham radio flea market aisle will often give you quite a few options for a great purchase!

Here is a video example of the annual Straight Key Night experience. MIKROWAVE1 explains and actually makes CW contacts with other amateur radio operators enjoying the annual event. (Below the video, look for some pictures of several types of straight keys you might find as a bargain to add to your own ham radio station!

Here are some pictures of various CW (Morse Code) keyers.  You can grab several to use for contesting or just simple rag-chewing.  Some hams actually collect various types of keys!

 

 

What Is D-Star All About?

Yaesu has System Fusion… guess who has this thing called, D-Star?  You can probably guess pretty quickly, if you don’t already have an idea.

Discover D-STAR from Icom

Yaesu System Fusion Introduction

Cory Sickles (WA3UVV) is active in our local ham club, Monongalia Wireless Association, and he has been guiding us in installing a new Yaesu System Fusion repeater system up on Chestnut Ridge.  Are you wondering what Yaesu System Fusion is?  What is C4FM?  What is the difference between Fusion, D-Star, P25 and DMR?  Well… here are a couple videos that might give you some insight into primarily Fusion… but the second video looks at some comparison.  (Spoiler alert… it gets territorial quickly.)  Hats off to HamRadioOutlet and HamRadioNow for spending the time on these cool systems!

Near Vertical Incidence Skywave (NVIS)

ml91_graph-779367

I love DX.  I love chatting to interesting people all over the world and making new friends.  For short range chatting I use our Monongalia Wireless Association W8MWA Repeater on the 144/440 frequencies.  Sometimes it’s more difficult to talk short distances than it is to talk half way around the world.  Let’s consider Near Vertical Incidence Skywave  (NVIS) antennas with our HF radios.

NVIS is something every Ham needs to learn about.  The antenna system is not difficult to construct and can serve an important function for shorter range communications, especially in time of an emergency when normal local / regional communication systems are down for some reason.  (i.e. cell towers, cellphones, landlines, etc.)  Hams may be called into service quickly.

Here is what Wikipedia says about NVIS communications…

Near vertical incidence skywave, or NVIS, is a skywave radio-wave propagation path that provides usable signals in the range between groundwave and conventional skywave distances—usually 30–400 miles (50–650 km). It is used for military and paramilitarycommunications, broadcasting,[1] especially in the tropics, and by radio amateurs. The radio waves travel near-vertically upwards into the ionosphere, where they are refracted back down and can be received within a circular region up to 650 km from the transmitter.[2] If the frequency is too high (that is, above the critical frequency of the ionospheric F layer), refraction fails to occur and if it is too low, absorption in the ionospheric D layer may reduce the signal strength.

The most reliable frequencies for NVIS communications are between 1.8 MHz and 8 MHz. Above 8 MHz, the probability of success begins to decrease, dropping to near zero at 30 MHz. Usable frequencies are dictated by local ionospheric conditions, which have a strong systematic dependence on geographical location. Common bands used in amateur radio at mid-latitudes are 3.5 MHz at night and 7 MHz during daylight, with experimental use of 5 MHz (60-meter) frequencies. Broadcasting uses the tropical broadcast bands between 2.3 and 5.06 MHz, and the international broadcast bands between 3.9 and 6.2 MHz, Military NVIS communications mostly take place on 2-4 MHz at night and on 5-7 MHz during daylight.

Optimum NVIS frequencies tend to be higher towards the tropics and lower towards the arctic regions. They are also higher during high sunspot activity years. The usable frequencies change from day to night, because sunlight causes the lowest layer of the ionosphere, called the D layer, to increase, causing attenuation of low frequencies during the day [3] while the maximum usable frequency (MUF) which is the critical frequency of the F layer rises with greater sunlight.

NVIS is most useful in mountainous areas where line-of-sight propagation at VHF or UHF frequencies is ineffective or when the communication distance is beyond the 50-mile (80 km) range of groundwave, and less than the 300–1500-mile (500–2500 km) range of lower angle sky-wave. Another interesting aspect of NVIS communication is, that direction finding of the sender is more difficult than for ground-wave communication (i.e. VHF or UHF). For broadcasters, NVIS allows coverage of an entire medium-sized country at much lower cost than with VHF (FM), and daytime coverage similar to MW (AM) nighttime coverage at lower cost and often with less interference.  https://en.wikipedia.org/wiki/Near_vertical_incidence_skywave

Below are a few very good links to articles for the nuts & bolts of putting together a simple and good NVIS antenna.

http://www.tactical-link.com/field_deployed_nvis.htm

http://www.qsl.net/wb5ude/nvis/index.html

http://www.w0ipl.net/ECom/NVIS/K2GW-NVIS.htm

http://www.w0ipl.net/ECom/NVIS/cbp-nvis.htm

Here is a sample video by NG9D with an 80 Meter End Fed NVIS Field Antenna.

See How a Schematic Diagram is ACTUALLY Visualized

“How to read an Electronic Schematic” by Paul Wesley Lewis

Wonderful example of how to visualize and equate the schematic diagram with the actual circuit build out.

What the heck is an Amp-Hour?

Battery amp-hour, watt-hour and C rating tutorial

Regardless if it’s your flashlight, your 2 Meter hand-held radio, your QRP rig, your Field Day station(s), your APRS setup, your balloon launch radio transmitter, your trolling motor, your emergency preparations or your personal GoBox… understanding how long those batteries that supply operating power will last becomes quite important.  It will also assist you in deciding what battery to select for a particular project or product.  Afrotechmods has several excellent YouTube videos on his channel that we all can enjoy!

Battery Technology Comparison by KF7IJZ

Small AGM vs A123 ALM-12V7 LiFePo4 Battery Module

Explaining USB 3.0

ExplainingComputers YouTube Channel, Christopher Barnatt, explains USB 3.0 and how it compares to USB 1.1 and USB 2.0 and data transfer rates.

Do Volts or Amps Kill You?

Does Volts or Amps Kill You? Voltage, Current and Resistance

This should be a good lesson for everyone, especially Hams that tinker and homebrew serious radio equipment.  You’d be surprised how much is too much!  Safety around radio equipment, coaxial cables, power chords, power lines, lightening storms, grounding straps and towers needs to be at the forefront of our mind.

Excellent YouTube video by RimstarOrg.

 

Portable Battery Box for Kayak… or Ham Radio

There are a ton of variations of portable battery boxes and unbelievably expensive if you buy they retail.  I like building projects at home, so here is another battery box with a very different form profile from some of the other videos on my blog.  DIY!  Here is a video from Derek Dickey on YouTube of his own kayak fishing GoBox.

 

GoBox Ideas

GoBox Update from KC6TYD

I am getting ready to put my ham radio station back together after being QRT for a number of years.  When I think about the VHF/UHF section of my station, I may decide to configure those particular technologies in a GoBox, of some sort.  I really like the idea of being able to “pack-n-go” in the event of emergency comms or Field Day type of activities.

 

Analog Oscilloscope bandwidth considerations with W2AEW

Get the right O-Scope!

Monitor your Ham Radio transmitter with an oscilloscope with W2AEW

More O-Scope training!  This guy is so good at teaching it!

Analog Oscilloscope Basics: Making a Frequency Measurement with W2AEW

Bought my first O-Scope at Dayton Hamvention in 2015… here is a good way to learn!

Arrow Antenna Bracket by Randy K7AGE

If you are interested in a relatively easy way to chase “The Easy Birds” (amateur satellites), K7AGE can help you get set up and successful QUICK!

Ham Radio Satellite Arrow Antenna

How to track satellites with K7AGE… Randy is great at explaining the how and why!

Ham Radio AO-51 Satellite with Randy, K7AGE

Randy K7AGE does a great job explaining how the satellite pass will work with minimal ground station equipment.  It is a really cool way to communicate and anyone with a Ham Radio License can do it!!!  Think about it… you are shooting signals to and from something the size of a Cantaloupe that is more than 22,000 miles away from the earth… and MOVING at 17,000 miles per hour in a circular orbit… with a $30 handi-talkie!

 

 

 

 

2 Meters Ham Band… VHF… What can ya hear?

K7AGE has a superb series of ham radio videos and I have learned a lot from them.  Subscribe to his YouTube Channel for information on TONS of topics about amateur radio!

10 Meters Ham Band… what can ya hear?

Anderson Power Poles (Part 2)

Anderson Power Poles For 12 Volt Ham Radio Connections

These are very handy for all sorts of your 12 volt ham radio projects!  

Will be looking for these at the next hamfest!

GPS and APRS… A Marriage Made In The Heavens

24satellite

How GPS Works

Basic APRS – An Introduction

Automatic Packet Reporting System (APRS)

(Click link above for the ARRL APRS webpage explaining APRS)

 The Global Positioning System, or GPS, is pretty amazing and chances are, it’s playing a much greater role in your life than you realize. Anthony explains how GPS works and tells you about some pretty cool upgrades coming soon.

GPS
http://www.gps.gov/
“Official U.S. Government information about the Global Positioning System (GPS) and related topics”

GPS Modernization Video
http://www.youtube.com/watch?v=chNQW2…

GPS is getting an $8-billion upgrade
http://articles.latimes.com/2010/may/…
“Without it, ATMs would stop spitting out cash, Wall Street could blunder billions of dollars in stock trades and clueless drivers would get lost.”

New Satellites Could Make GPS Harder to Jam
http://www.wired.com/dangerroom/2012/…
“Without GPS, drones can’t fly, communications networks can’t function, and you don’t have a chance of figuring out how to get to your Aunt Sadie’s place in New Jersey. And right now, GPS is highly vulnerable because its weak signals are coming from an aging constellation of satellites.”

How GPS Receivers Work
http://electronics.howstuffworks.com/…
“Our ancestors had to go to pretty extreme measures to keep from getting lost. They erected monumental landmarks, laboriously drafted detailed maps and learned to read the stars in the night sky.”

Check out the Air Force Collaboratory:
https://collaboratory.airforce.com/

Watch More:

How Collaboration Leads To Great Ideas
http://www.youtube.com/watch?v=ga1_a4…

How Robots Help Search And Rescue Teams
http://www.youtube.com/watch?v=i1Jztu…

Voyager 1: Where To Next?
http://www.youtube.com/watch?v=RRbG3y…

Feed Lines… A Basic Understanding

The ARRL Website has excellent information on their website about all things amateur radio.  This article explains the basics about some of the more common feed lines in use for antenna construction and the termination to your ham radio equipment.  Check the link below…

Feed Lines… ARRL.Org

Ham Radio Reference Site… RigReference.Com

logo

I stumbled onto this really cool website called RigReference.Com and was able to find some information on several older pieces of equipment I have in my ham shack.  Here is what their website says…

Who we are

RigReference.com is designed for and by Ham Radio enthusiasts. RigReference.com provides information about new and vintage amateur radio equipment (rigs) and allows and encourages members to share their opinions about these rigs.

RigReference.com is always looking for amateur related news, especially new equipment announcements. If you’ve seen or heard anything interesting please don’t hesitate to contact us!

RigReference.com explicitly does not sell ham radio equipment and/or parts.

Twitter… @RigReference

First Radio? Icom 718 HF Radio

The Icom 718 HF Ham Radio is suggested by many hams as the ideal beginner’s HF rig. The QRZ.COM website had a good forum post on best radios for beginners HF Rig For Beginners  (See reviews of the Icom 718 at the end of this post.)

Icom 718 HF Radio from the Amateur Electronic Supply (AES Website) website

Core Specifications
Receive Range: 0.030-29.999 MHz
Transmit Range: 1.800-1.999, 3.500-3.999, 7.000-7.300, 10.100-10.150, 14.000-14.350, 18.068-18.168, 21.000-21.450, 24.890-24.990, 28.000-29.700 MHz
Mode: USB, LSB, CW, RTTY (FSK), AM
Transmit Power: SSB, CW, RTTY 2-100W; AM 2-40W
Memory Channels: 101 (99 regular, 2 scan edges)The HF bands allow you to communicate over long distances covering many km even to the other side of the world. With the superior performance found in the IC-718 such as wide dvnamic range, high C/N ratio, and full duty operation you will find making these contacts easy. Experience the combination of the latest RF and digital technology, along with the size and simplified operation. You will see the IC-718 will be the most practical rig you will ever own.Front mounted loud speaker
The IC-718 has a speaker mounted on the front panel. With the speaker facing the operator, audio sounds can be clearly heard without impediment during operation. It is no longer necessary to manually increase the volume to try and capture audio sounds.

Superior basic performance
The IC-718 has 0.03-29.999999 MHz* general coverage receive capability. A 4-element system is employed for the 1st receive mixer, providing superior receive IMD, especially from in-band near-by interfering signals. A well-designed double-conversion system to help minimize image and spurious responses for better signal fidelity, is also built-in. A newly designed PLL circuit has been adopted to improve C/N ratio characteristics. The combination of the 4-element system mixer and new PLL circuit allows superior basic performance as that of a commercial grade transceiver.
*Guaranteed range: 0.5-29.999999 MHz

DSP capability*
The DSP includes the following to give you superior receiver quality in your shack, vehicle or during DX’pedition. *DSP is built in to U.S. models, but may be optional outside the U.S. Please check with your dealer.
Noise reduction:
Pulls desired AF signals from noise. Outstanding S/N ratio is achieved, providing clean audio in SSB, AM and FM.
Automatic Notch filter:
This automatically minimizes beat signals and heterodynes while preserving the receive signal. Also, the notch frequency is automatically adjusted to follow interfering beat signals – for example, reducing interference from RTTY signals during SSB operation.

Interference rejection – IF shift
To reject interference, the IC-718 has an IF shift function which shifts the center frequency of the IF passband electronically to reduce adjacent interference.

Microphone compressor
This feature compresses microphone audio input to increase average audio output level. The result is, that talk power is increased. The compression level is adjustable for your preference. This function is effective for long distance communication, or when propagation conditions are poor.

RF gain control
RF gain control is combined with the squelch control. The RF gain adjusts minimum response receiver gain, and ignores signals weaker than the pre-set level – providing pleasant stand-by, or scanning.

Ample CW features
An electronic keyer with a variable dot/dash ratio (2.8:1 to 4.8:1) control is built-in. By simply connecting a paddle, easy CW operation can be made. The CW pitch and the key speed are also variable from 300-900 Hz, 6-60 wpm, respectively. Of course, full break-in capability is available with the adjustable break-in delay.

VOX operation
A VOX (Voice operated transmission) is included with the IC-718. It provides handsfree operation by detecting audio signals from the microphone. It’ s easy! Flexible filter selection

Flexible Filter Selection
An optional IF filter can be installed into the transceiver to suit your operating preference.

High frequency stability
When the optional CR-338 HIGH STABILITY CRYSTAL UNIT is installed, you get a very high frequency stability of ±0.5 ppm.

Selectable antenna tuner
Either the optional antenna tuner unit, AT-180 or AH-4 can be used with the IC-718 to suit your installing conditions, or operating style. Of course, the AH-4 control circuit is built into the IC-718.

Simple operation
The IC-718 is equipped with a minimum number of switches and controls for superior feature selectability. The 10-key pad on the front panel for entering directly an operating frequency, or a memory channel number. The auto tuning steps function helps quick tuning is activate when turning the dial quickly. And the band stacking register is very convenient when changing operating bands.

Digital S/RF meter
Built-in multi functional digital S/RF meter indicates signal strength level while receiving, and either transmit output power, ALC level or VSWR ratio while transmitting.

Optional voice synthesizer
A clear, electronically-generated voice announces operating frequency, mode and receiving signal strength level when the optional voice synthesizer unit, UT-102, is installed.

Other features
• USB, LSB, CW, RTTY(FSK) and AM modes are built-in
• Level adjustable noise blanker
• RF attenuator and Pre-amplifier
• Variety of scanning function types
• Total 101 memory channels are available
• Hand microphone is supplied, and more…

Includes:
• Hand microphone
• DC power cable
• Spare fuse (FGB 20A)
• Spare fuse (FGB 4A)

Dim: 9.4″w x 3.75″h x 9.4″d; 8.5 lb.

Download Manual: IC-718

Download Brochure: IC-718  

Reviews of the Icom 718 from eHam.net   eHam.net reviews of the Icom 718

How Does a Multimeter Work?

Afrotechmods is a very insightful and easy to understand YouTube channel to follow on basic electronics.  Here he talks about multimeters and their usage in our ham shack.  I have several different digital and analog multimeters and their usage often depends upon the application and project.  He does other excellent videos, so check him out!

Solar Super Storm of 2012 Near Miss… Ham’s Better Be Prepared

This is why ham radio operators need to be prepared for such a massive solar event.  If the rest of the grid (power and internet) were to go down, it could take a long time for it to be repaired.  Ham radio communications might become critical in every community.  Are we prepared and proficient to aid our communities?

Link to full article… Near Miss: The Solar Superstorm of July 2012

Basics of RF Mixers in Radio Receivers / Mixer Tutorial / Frequency Conversion by W2AEW

This video describes the basic properties of RF mixers, in the context of using them for frequency conversion/translation such in the application of a radio receiver. The input and output signals are shown on the oscilloscope, and the spectrum of the output is also shown, illustrating the various frequency components that are produced by the mixing process. The concept of IF filtering in a receiver is also illustrated. The video does not go into the design of mixers, the different types of mixers, or how to select a mixer for a given application.

Basic Transmitter and Antenna Tuning… A Sweet Match

This is a simple video primer on using an antenna tuner to reduce your Standing Wave Ratio (SWR) and find the ideal tuning match between your transmitter and the antenna to maximize your output power to the antenna.  This basic principle applies to other antenna tuners of other design and configurations.  Always read your radio Operation Manual AND your Antenna Tuner manual for proper procedure for your set-up BEFORE you apply the power!  Initial tuning into a Dummy Load should be made before a quick final tune-up on the actual frequency you are planning to communicate on.

 

Elecraft KX3 Demo and Connect to iPad Videos

I had the pleasure of playing with two Elecraft KX3 radios during ARRL Field Day 2014 running CW and PSK31 modes.  Both radios worked like a charm off of battery power and we racked up some excellent contacts during the hours of the contest.  I want to thank Bill (WR8S) and Tom (KD8WQK) for letting me get may hands on their toys! Definitely on my WISHLIST!

kx3

The KX3 HF Radio is pictured above.  The optional 100 Watt Amplifier is pictured below.

 kxpa100_fr_1280

Watch the Elecraft KX3 Demo Video below…

Connect the KX3 to an iPad…

playwithlifeorg

4 out of 5 dentists recommend this WordPress.com site

BG5TLA's Blog

Just another WordPress.com site

Tinkertoytech's Blog

Just another WordPress.com weblog

KC4LMD

Chronicling my pursuit of amateur radio’s "Worked All Neighbors" award

Casey's Place

"When we try to pick out anything by itself, we find it hitched to everything else in the universe." -- John Muir

Hackaday

Fresh hacks every day

VK4JAZ

Writings about Amateur Radio

Tactical HF

I love the smell of ozone in the morning...smells like...radio.

WB5RMG : RadioActive Blog

slightly sub-orbital testing facility

73, de N2HTT

A blog about ham radio, Linux and more...

Ham Radio Blog PD0AC

Thoughts of a Dutch radio amateur

Silver Bells Blog

Truth Appealing...

CQ de WT8WV... GraHAM's Dits & Dah's

My journey in amateur radio intrigues and hobby interests

K5UNX Ham Radio Blog

A blog dedicated to things Ham Radio related

Mountain Mists...

A pleasant journey into how I see things... big and small

playwithlifeorg

4 out of 5 dentists recommend this WordPress.com site

BG5TLA's Blog

Just another WordPress.com site

Tinkertoytech's Blog

Just another WordPress.com weblog

KC4LMD

Chronicling my pursuit of amateur radio’s "Worked All Neighbors" award

Casey's Place

"When we try to pick out anything by itself, we find it hitched to everything else in the universe." -- John Muir

Hackaday

Fresh hacks every day

VK4JAZ

Writings about Amateur Radio

Tactical HF

I love the smell of ozone in the morning...smells like...radio.

WB5RMG : RadioActive Blog

slightly sub-orbital testing facility

73, de N2HTT

A blog about ham radio, Linux and more...

Ham Radio Blog PD0AC

Thoughts of a Dutch radio amateur

Silver Bells Blog

Truth Appealing...

CQ de WT8WV... GraHAM's Dits & Dah's

My journey in amateur radio intrigues and hobby interests

K5UNX Ham Radio Blog

A blog dedicated to things Ham Radio related

Mountain Mists...

A pleasant journey into how I see things... big and small

%d bloggers like this: