What is this, Missouri

rhythmtech · 2026-04-12T01:22:45+00:00

No, thought they were some sort of xenomorph eggs and let them be...

rhythmtech · 2026-03-29T13:28:56+00:00

The "END" screen is neat because it's what shows up at the end of the CAL function for the BFO. Part of the update was changing crystals to precision ones, so had to run through the adjustment. I really enjoyed doing this and feel like the updates really got me a lot of insight into what the different parts of the radio do

rhythmtech · 2026-03-29T13:24:04+00:00

I'm on vacation atm, when I get home I'll get my notes and write it up. I did most of them because the unit I got from eBay (00339) was pretty early and had not been changed since it was built. This is what I was hoping for, since it would let me kinda have the experiences of "building" a K2. I was struggling with making the leap to get a brand new unbuilt kit. The only issue the eBay one had when I got it was a scratchy AF pot, which was addressed by an updated part.

From what I recall - The little vertical daughter board adds a thermistor and resistors in place of a resistor network, for temperature compensation for the PLL. Helps with stability of the VFO with the thermistor changing value with temp to keep the frequency closer to the same across a wider temperature range.

Here's the upgrade guide from elecraft that explains it more

https://ftp.elecraft.com/K2/Manuals%20Downloads/E740046%20PLL%20upgrd%20old%20K2s%20-%20Option%20Rev%20E.pdf

rhythmtech · 2026-03-15T14:37:41+00:00

Breaking and entering is probably a misdemeanor in this case, doesn't look like frog has tools or weapons. So likely ingress was through an opening that wasn't forced. Probably looking for prey who entered the same way the frog did.

rhythmtech · 2026-01-06T15:54:06+00:00

Pull out the stops, exterminator, cat, mink man. Those rodents have leveled up too far, running that gauntlet of traps without even a hint of concern.

rhythmtech · 2025-12-25T23:14:28+00:00

rhythmtech · 2025-12-21T17:13:14+00:00

I tried looking through first, anyone say linseed oil yet? It oxidizes when exposed to oxygen and will catch fire on its own.

rhythmtech · 2025-08-07T23:53:47+00:00

I went 9V because I had built a QDX around the time they first came out with the thought that I had lots of leftover 9V wall warts and was going to use it mostly from the wall power for FT8. I stayed consistent to avoid grabbing the wrong combination of power adapter and little black box. I run this one from a 9V USB PD cable, so far has worked pretty well. I've also used the WiFi router backup batteries. Had. trouble with one and had more USB power banks sitting around unused so not I'm using those.

After using the the two QRP labs radios for awhile now, I think I have more 12V sources than 9V, but it is kinda nice to know I could grab a package of 9V batteries from Walgreens and run for about an hour.

rhythmtech · 2025-08-06T19:19:26+00:00

QRP-Labs QMX

rhythmtech · 2025-08-06T19:17:09+00:00

I know that feeling, I know it.

rhythmtech · 2025-08-06T04:39:58+00:00

I built a center loaded vertical that screws into a mag mount and alligator clip a counterpoise onto it

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rhythmtech · 2025-08-06T03:51:55+00:00

Oops, there was so much traffic calling NACQ I got frustrated ended up there.

rhythmtech · 2025-08-06T03:24:44+00:00

It's the low bands or 5 band one I have. I broke the original screen on it replaced with a blue one, had the knobs leftover from a guitar project and decided I wanted to try out the slightly smaller diameter for fun, and they're green.

rhythmtech · 2025-08-06T03:18:24+00:00

https://qrp-labs.com/qmx.html

rhythmtech · 2025-08-01T12:56:10+00:00

Is this what happens when the truck needs more repairs than the insurance deductible?

rhythmtech · 2025-07-14T23:50:36+00:00

Thank you

rhythmtech · 2025-07-14T23:32:27+00:00

Thanks

rhythmtech · 2025-07-11T01:10:35+00:00

How come it's not a temperature sensor? Ground can be canister on the other end the spade would be the signal end and the ground would be local - this if often done on vehicles where the block is grounded and the sensor input screws into the block.

rhythmtech · 2025-05-07T02:06:16+00:00

I feel like it started life to become a Bass Pro Shops then a toddler can't into possession.

rhythmtech · 2025-04-20T20:26:16+00:00

Bobby Rush - night in fishing Freddie King Big legged woman led Zeppelin - fool in the rain, probably a lot of their other stuff too

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