Chuck Broadwell, W5UXH 79, Male Las Cruces, NM United States

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SDR online network

There is an interesting network of wideband receivers with close to 100 different sites that can be used for tuning the bands around the world. HA7ILM, András Retzler, operates a web site that…Continue

Started Dec 28, 2016

Video with text display of QRQ QSO: W5UXH - K6KX
1 Reply

I made a screen recording of a qso to demonstrate the serial interface between keyer / decoder of my ChipKit / PIC32 keyer. Both sides of the qso are displayed. The keyer switches the text color to…Continue

Started this discussion. Last reply by Joe May 11, 2016.

DZKIT Sienna at 70 WPM
7 Replies

A few years ago I built a Sienna for K6KX (Fred), a long story that I will not go into.The past few days Fred has been testing it on our sked. Tonight I did a recording that can be downloaded from…Continue

Started this discussion. Last reply by Chuck Broadwell, W5UXH Jun 23, 2020.

Combined Keyer / Keyboard / Decoder
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This project began life a bit before Hjalmar posted his Arduino decoder project. I had barely begun to migrate my keyer software to the ChipKit PIC32 boards (Max32 and Uno32) at that time. I…Continue

Started this discussion. Last reply by Chuck Broadwell, W5UXH Jun 30, 2016.

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Profile Information

Your Call Sign: W5UXH

How many years have you been performing QRQ CW: Around 30-45 years

What speed do you like to run QRQ CW: 45 to 65 on kbd; sometimes can handle 70 on kbd; can only handle up to 35 or 40 on paddle if feeling fresh

Your favorite key, paddle or bug: Begali Graciella (on loan courtesy of K6KX)

Your favorite cw keyboard: Homebrew, ChipKit / PIC32 uProc with PS-2 keys; Combined keyer + keyboard

Your favorite cw sending software: none

Your Rig, Antenna and RF Power: K3, KPA500, KAT500, very poor low CF wire fed with window line, center at about 18 feet, ends 3 feet, also 6-BTV

Your QSK preferences: 100% QSK, (must be able to hear a break between characters at 60 wpm to be happy); I probably have not operated non qsk since late 1960 (licensed in June 1960)

Your favorite headphones or speakers for listening to cw: cheap Radio Shack headset, MFJ-281 speakers

What has been your most effective way of training practice, to copy and send qrq cw: Never did "train", just had qsos for past 54 years

New Keyboard Project

Jan 2011 keyboard project update:

I am now using a much lower cost microprocessor board ($15) and have done a printed circuit board to simplify construction. Current details at: https://sites.google.com/site/w5uxhavrkeyboard/really-bare-bones-version

Two new photos show the low cost enclosure and the internal assembly.

Original notes from some months ago:

The photo below (the one with the black panel) shows my current keyboard project. It uses a low cost microprocessor board with the Atmel ATmega1280 chip. Software is written in C. The AVR Studio development environment is used and AVRDUDE is used to download to the chip on the board. Preliminary details are available at this link:

http://sites.google.com/site/w5uxhavrkeyboard/home

This new project is the big brother of the old PIC keyer/keyboard I have used for the past 10 years or more. The PIC project was written in assembly. The new project does not yet include the paddle keyer function, but I hope to get that done eventually. The keyboard function is in daily use now and seems to be working properly.

Chuck Broadwell, W5UXH's Photos

Comment Wall (5 comments)

At 8:34pm on February 16, 2010, Chuck aa0hw said…: Hi Chuck,
Nice to have you join the site.
Welcome !
chuck

At 4:54pm on April 14, 2011, Brett Miller said…: Very nice stuff you have here Chuck, and I have been wanting to try the Graciella for years. Hope to run into you on the air or set up a sked sometime. 73 -Brett KI4DBK

At 7:14am on July 4, 2011, Chuck aa0hw said…: Hi Chuck,

Was wondering if you could tell us a bit more about your experience with your

Graciella paddle...

At 3:17pm on April 2, 2012, Chuck Broadwell, W5UXH said…: Mar 2012 Keyer Project Update: I recently ordered a quantity of blank PCBs for the keyer. Chuck (the other one, AA0HW) offered to place an ad somewhere on the site but I have not gotten around to getting that formal. I did make a few comments on the photos to let people know I have the PCBs and programmed chips available, as well as a few assembled keyers, in case anyone is interested. You can find my email address on QRZ. Documentation is here:

https://sites.google.com/site/w5uxhatmega328pkeyerkbd/home

At 3:24pm on April 2, 2012, Chuck Broadwell, W5UXH said…: Chuck V. recently sent me an email that had a link that led me to another embedded processor board that looks interesting: http://mbed.org/handbook/mbed-NXP-LPC1768

I have ordered one to play with. It is sort of like an Arduino on steroids (I read that somewhere, it is not original with me). One strange thing is that the software development IDE is online where the Arduino IDE is installed on your machine.

The processor chip on the mbed board includes a USB sub-assembly so it should be possible to implement a keyboard working from USB keys. My last attempt at that ended up combining an embedded Linux board with the AVR keyer (mentioned elsewhere on here). It was a fun project, but a bit complex.

Even the mbed board would be overkill for a keyer, but might be fun also.