Category Archives: Audio

Ham radio audio applications

Bencher Paddles and Memory Keyer UNITE!

As soon as I get my Yaesu System Fusion FTM100-DR online, I want to mate my Bencher paddles to the new MFJ-490X Menu Driven Memory Keyer that I picked up at the 2016 Dayton Hamvention last week (May 21, 2016).  I am itching to get these two toys working in some CW / More Code Contesting very soon!  5 programmable memories plus all sorts of keyer speed, weighting, side tone, hand key capability, serial number decrements, random code practice, iambic settings, etc.

(See video below!)

MFJ-490X Memory Keyer  Instruction Manual

 

 

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Intro to Kit Building for Radio Amateurs by K7QO (Chuck Adams)

Chuck Adams (K7QO) makes a club presentation on Kit Building basics.  He highlights what every ham radio operator needs on his workbench to build kits or make repairs.

K7QO Chuck Adams website

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)…

 

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!

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.

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!

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!

How Do I Read a Schematic Diagram?

How to Read a Schematic by RimstarOrg 

If you are going to build a simple crystal radio, a QRP rig or even a 100 Watt HF transceiver, you are going to want to understand how an electronic schematic diagram is read.  It’s not that difficult.  RimstarOrg has a great video on understanding the basic concept of reading a schematic.

 

Multimeter Tutorial by AfroTechMods

THE BEST Multimeter Tutorial

The voltmeter… the Volt-Ohm Meter… the Multimeter… digital or analog… continuity… amperage, voltage and ohms… COME ON, MAN!  What is it and how hard is it to use in the every day life of a ham radio enthusiast or just someone working in their workshop?  Once again, Afrotechmods has an excellent tutorial on his YouTube channel for us to learn from!

 

 

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.

 

Heil Pro 7 Headset from 2015 Dayton Hamvention

Pro7-3-B

Having lost a signification amount of higher frequencies in my hearing over the years, I added this to my WT8WV station. Bob Heil spent a few minutes with me on how to set them up with my Icom 761. He’s a great fella! Can’t wait to get them on the air!

The Pro 7 offers a feature set that compliments the Heil Sound standard for headset design. Unlike copies of various aviation type headsets, the PRO 7 is not a copy. It brings newtechnologyto the headset industry. The 2″ thick gel foam ear pads provide extreme comfort for extended periods of time while exhibiting passive noise reduction rated at -26dB, ideal for use in high ambient noise environments. Using technology Bob Heil learned from Paul Klipsch back in the early 70’s, the ear cup enclosures were tuned to the free air cone resonance of the speaker cone thus providing very low distortion with maximum voice articulation providing the ultimate sound reproduction for communications. Theexclusive Heil Phase Reversal system (HPR) allows you to acoustically move the signals forward and creates a spatial widening of the sound field. This feature makes it easier to pull a weak signal from a pileup – useful for DxPeditions and contests as well as a stress reliever as your change the phase angle of the program source. A speaker balance control allows preferred level between the speakers.

The PRO 7 has interchangeable microphone system allows the microphone element to be easily changed in the field for different types of applications. The low distortion Dynamic HC-7 element exhibits a frequency response of 100 Hz – 12 kHz with the -3dB points at 100 Hz and 12 kHz. The traditional Heil speech articulation rise is centered at 2K -4KHz with properly balanced highs and lows. The impedance is 600 ohm. The HC-7 is one of our best microphone elements for speech articulation.

Designed exclusively for iCOM radios, the iC Electret element has a -3dB fixed point at 35 Hz and 12kHz with the sensitivity of-48 at 1500 ohms output centered at 1kHz. The iC element solves the problems with LOW GAIN ICOM radios but can also work with great results on newer Icom models. Bias power is applied to operate the iC electret element. The Pro 7 iC is supplied with our ADl-iC eight pin iCOM adapter cable.

The Pro 7 and Pro 7iC come in black, red, blue or pink.

The balance control located on the LEFT speaker, controls only the left speaker. Begin by setting a comfortable right side speaker level with the AF gain of the receiver. You then adjust the left side speaker where necessary to balance the audio between the speakers. In most cases the balance control will be close to or maximum.

http://www.heilsound.com/amateur/products/headsets/pro-7

10 Most Popular Microphone Wiring Diagrams

HEADSET1            micdiagram2922

This is an excellent article from QRZNOW.COM showing the pin-outs for the 10 most popular microphone cables.  This QRZNOW website is a huge resource for hams everywhere.  Click article link below for full article and wiring diagrams…

10 “Most” Popular MIC Wiring Diagrams

RS232C DE-9 Pin Outs (M/F)

   dsub9m Male

dsub9f

Female

Again, DXZone has the information needed if you are needing to wire up an RS232 cable for an amateur radio project.  Click the link below for which pin does what!

RS232C DE-9 Pin Outs

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!

Solder Up an XLR Audio Cable

If you are going to connect audio equipment devices you will most likely run into the XLR male and female connectors at some point.  Or maybe you need to repair a cable that is no longer working.  This video is a good example of how to make the proper connections!  It’s not difficult to do.

Heil Sound lets me hear the world!

download

For those of us Hams with old ears, I highly recommend looking into Bob Heil’s solutions for professional quality headsets.  I have an older Heil headset I used many years ago but now am considering the model below for added quality as my hearing ability is considerably lower than it was… really thinking about either the Pro-Set or Pro-Set Elite model.  Bob Heil is a legend in professional audio and worked with Joe Walsh, Peter Frampton (Bob invented Frampton’s “Talk Box”), Jeff Beck, Slash, Richie Sambora and The Who… so he KNOWS audio!  Also, check out the video below that tells what the audio industry thinks about Bob Heil… and hear some of the great music he was responsible for.

Click link below for the Heil Sound website…

http://www.heilsound.com/amateur/  

 

PSE-trans

Coax, Wires, Cables, Connectors, Insulators, Rope for the Amateur Radio Operator

coaxcable

If you are looking for coax, antenna wire, connectors, rotor cable, insulators, rope or the tools to make antennas Davis RF Company is a place I like to use.

 

Click link below to go to the Davis RF website…

Davis RF Company

antenna-7

Ham Nation Episode 36: Connect An Audio Mixer To Your Transmitter

Another great YouTube show!       Ham Nation

This episode speaks about hooking up and audio mixer to your transmitter with Bob Heil and Gordon West, et al.  Every show is packed full of information about many different facets of the hobby.  Watch them all! (Segment begins at 41:45 in the video…)

Hosts: Bob Heil (K9EID), Gordon West (WB6NOA), George Thomas (W5JDX), and Leo Laporte (W6TWT)

 

 

 

Ramsey Kits

HR-SERIES

 

I have built four different radios from Ramsey and they are fun to build, easy to layout, and you learn a lot of radio design.  Built the 40 Meter QRP Receiver and Transmitter, the Aircraft Receiver, Infrared Transmitter and Receiver kits.  A great way to pass a rainy day!   (Click link below to go to their website…)

 

http://www.ramseyelectronics.com/  

Intro to PSK31 and a Good PSK31 Guide

Tons of fun on PSK31

Tons of fun on PSK31

 

BPSK31.COM does a great job of explaining how to get on the air with PSK31 technology.  (Click link below for another excellent resource.)

 

BPSK31 Website

Field Day & PSK31 Macros

This is BAD PSK31 signal identification... keep it clean!

This is BAD PSK31 signal identification… keep it clean!

 

Running PSK31 on Field Day in 2014 was a BLAST!  We soon learned that a set a easy to use macros sped up our contacts in the contest.  The link below is an excellent resource to consider.

 

http://www2.mmae.ucf.edu/wiki/Psk31_field_day_macros

 

 

Collection of Connector Pinouts & Cable Descriptions

rs232-pinout1

 

Need to figure out what cables to use or what the pinout configuration should be?  This is a nice resource for just that!

 

Welcome to the Hardware Book. Internet’s largest free collection of connector pinouts and cable descriptions.   (Click the following link…)  http://www.hardwarebook.info/  

Eurorack UB-1202 Audio Mixer Review

This is the 12-Channel audio mixer I picked up at the 2014 Dayton Hamvention Flea Market for $50… and I love it!

 

The DI… Direct Box

Do you need a DI (Direct Box) when mixing audio?

 

Setting Up a Little Mixer

Nice little mixer…

How To Mix Audio

This video will help explain how to create and audio mix with a mixing board.

 

 

<iframe width=”560″ height=”315″ src=”//www.youtube.com/embed/KHZhDA1T2NI” frameborder=”0″ allowfullscreen>

 

Connecting Devices To Your Audio Mixer

This video can be helpful when connecting gadgets to your audio mixer to route to the speakers.

 

Using a Small Audio Mixer for Ham Shack

I picked up a small used 12 channel audio mixer at the 2014 Dayton Hamvention Flea Market for $50 and plan to route all sorts of audio from my radios and computer through my ham shack.  Here is a simple explanation of how an audio mixer can be used.

 

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

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Writings about Amateur Radio

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K5UNX Ham Radio Blog

A blog dedicated to things Ham Radio related

Mountain Mists...

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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

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