Category Archive: Electronics

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 »

Sep 25

QRP Labs U3S WSPR Transmitter Build and Test

The QRP Labs U3S is a multi-mode transmitter kit. It outputs 200mw of power on any band you have a filter for, and is extendable to up to 6 bands that it can rotate through. It’s only $33 and is incredibly capable. Let’s check it out! I received the U3S in April 2017, but was …

Continue reading »

Sep 18

Catching up with MiscDotGeek: September 2017

It’s been a busy month at Chez Geek. This post involves an improvised lathe, a burrito, Linux, antique cast iron, and a duck. We’ve been working on projects off and on, and have had some family health issues to muddy the waters as well. ¬†Rather than tell a big long story, here’s a few headlines …

Continue reading »

Sep 03

An Inexpensive Digital Multimeter for the Thrifty Ham

When playing with ham radio or any other electronics, it’s pretty obvious that you need a Multimeter (DVM, Meter, whatever you want to call it) and if you’re like me, you’re on a bit of a budget. For me, I wanted to accurately set the bias on the IRF510 PA in my BITX40. This requires …

Continue reading »

Aug 10

Converting the BITX40 to 20M

20m BITX40 conversion IMPORTANT- READ THIS FIRST [UPDATE 11/14/2017]: After¬†even more experimentation, I have concluded that this method works great for the Band Pass Filter, but that the BITX40v3’s PA is not optimized for operation above 40m. It will work on 20m, but at reduced output of only 1 watt. The following information is left …

Continue reading »

Older posts «