Category Archive: Geeky Stuff

Nov 30

BITX40 PTT Enhancement for Digital or CW

The BITX40 PTT is a simple circuit: A switch grounds out the PTT Relay and the transceiver goes into transmit. As a stripped down SSB radio, this works fine and is simple and uses few parts. Why modify it? The challenge is that the PTT circuit is not solid state. The PTT circuit is just …

Continue reading »

Nov 20

MultiBand BITX40 Conversion

MultiBand BITX40 Introduction In Several Older Posts I’ve touched on ways that you can make a multiband BITX40 radio. While those methods worked, they were experimental. The Dual BandĀ option will likely work fine, but I found it overly complicated for the purpose. In this post, I’m going to show you a way that you can …

Continue reading »

Nov 19

Building an RF Probe for Fun and Measurements

Who needs an RF probe? Among the many things I’ve learned about ham radio, one of them is that you need test equipment. You can do a lot with a standard Digital Volt Meter, but one thing you can’t do is look at an RF signal in an HF radio. For that, you need an …

Continue reading »

Oct 09

QRP Labs VFO Review [Spoiler: we love it!]

I’ve had the QRP Labs VFO for many many months now and it’s about time I got around to actually writing a review of it. When I originally purchased my BITX40, it did not come with a digital VFO. With the analog VFO, tuning was an exercise in futility. I had never owned an HF …

Continue reading »

Oct 01

WordCamp LAX 2017

WordCamp LAX 2017: Travel and Luggage This will be my first work partially authored at subsonic speeds at 33,000ft. I can see Lake Tahoe from here. Well, I could a minute it’s ago anyway. My employer has asked me to join them at WordCamp 2017 in Los Angeles, and so right now I’m aboard a …

Continue reading »

Older posts «

» Newer posts