Category Archive: BITX40

Dec 29

BITX40 VFO Alternatives (and more!)

The BITX40 is a great radio but before they started shipping with a digital VFO, the BITX40 VFO was a big hurdle to getting on the air. The VFO is what tunes the radio, and the BITX40 VFO isn’t very stable. This can make it hard to stay on a frequency once you tune to it. …

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Dec 28

BITX40: L-Match Tuner for an End Fed Antenna

Can you hear me now? With my BITX40 in a temporary enclosure and with the PTT switch and Mic connected, it was time to try to make some contacts. I’d tuned the trimmer capacitor next to L4 it so that I could get into the upper part of the US 40M band and ended up …

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Dec 04

BITX40 Project Progress

A week ago I showed you the BITX40, a 40 Meter SSB radio for $45 from hfsigs.com in India. The kit arrived, and we’ve managed to put it together without letting the magic smoke out! Let us look at how the kit arrived and a minor challenge that was overcome. Unboxing the BITX40 was quite interesting. …

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Nov 26

40 Meters for $45: The BITX40 SSB Tranciever project.

This time around we’ll talk about an exciting radio: The BITX40 kit from hfsigs.com in India. More about that in a minute! The most expensive thing about ham radio is not getting your license. In fact that’s probably the single cheapest part of the whole hobby! Just some study time and $15 to take the …

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Oct 19

The Mad Scientist Hacker Lamp

Cheesy puns aside, I needed to be able to see in my little work area where I plan to play with electronics while I try not to burn myself with my soldering irons. Over the summer I bought a couple of workbench tables at a garage sale. One condition was that I had to take everything on …

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