Ham Radio – Page 2

July 4, 2019 Jeff

QRP Guys End Fed Half Wave Antenna – Part 2

I found some stranded, silver plated #22 wire that has Teflon insulation. It’s not copper-weld, but it’s tough stuff. I attached a 63 foot piece, and wrapped it around the PCB. According to the chart, the wire should be 61’6″, so I will have to trim the antenna for best SWR on site.

June 11, 2019 Jeff

QRP Guys No Tune End Fed Half Wave Antenna

Just finished building the kit. The instructions and illustrations were very good and easy to follow. Assembly took less than an hour. I will be using this antenna on our yearly cabin trip coming up in July 2019. I will do some testing before then and publish the results.

February 1, 2019 Jeff

uBitx V3 – Part 4

Here is my completed uBitx. It worked perfectly the first time I applied power. Well, except I had the encoder wires backwards so the tuning was backwards, but I don’t count that. The microphone, keyer and external speaker jacks are on the front panel. I plan to make custom knobs (red of course) on the lathe when I get time. There is a custom made heat sink on the back. It connects to a custom made piece of thick aluminum on the inside of the case where the final transistors mount. This view show power and RF connections. You can

August 7, 2018 Jeff

Indianapolis Hamfest 2018

Another great Indy Hamfest. Not as many outside flea market vendors as last year. The hamfest has been steady declining in the last few years. That being said, I thoroughly enjoyed it! I sold most of what I took, including the AOL CD’s that I have been dragging to hamfests for years. I was convinced that someone might want 280 AOL CD’s for a collection. I entered my SB-40 QRP radio in the homebrew contest and won first prize. I am now the proud owner of an Edsyn 951SXe soldering station. (A $155 value).