Nikolai 📡 🛰️ VE3NKL

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Needed to produce a RF signal at around 1.7GHz to test my receive setup for GOES-19, but finally realized that the signal generator has been sitting on my desk all this time... Turned my HT to 430.125MHz and the 4-th harmonic showed up at 1720.5MHz. I have a narrow saw filter before an LNA and I think this the reason why it worked so well. If I did not have it the SDR could've been saturated with the main signal. The antenna for my HT was a tiny mini-circuit dummy load, power setting EL (50mW).
@JoshMurray
My mistake, mixed up QMX and QCX.

@JoshMurray
Neat assembly job and a great looking QMX Mini!

I finished mine not that long ago, purchased the kit in the fall of 2025. What is interesting the insides look a little bit different (see around the transistor assembly). Perhaps, recent improvements...

Finally finished building my OCX-mini kit. The output power adjustment procedure has already been done (see L1-L3 coils spread/compacted). I do not have means of measuring the absolute power value directly, but used a comparative method which gave me 4.5 Watts. Before the power adjustment the output was around 0.5 Watts. Sounds good, now it is time to test TX on the air...
@dl2jml True. And I probably should've tried that... However, magnetic properties add some convenience and ensure the gap between the roof and the metal is at its minimum. The alternative would be to add some weight on top of the metal band, or to install it permanently.
I ordered this device from Amazon.ca a couple days ago. Kind of pricey but works very well with my Diamond HF40CL on the car roof. SWR dropped from 8.4 to 1.5. To verify things further I made a quick contact using 5W and no turner (thank you, W1NVT). Did not expect it to work so well...
@n1kdo Yes, this is why I need to invest in a mini cutter, mine is too bulky for some spots... It might not be long until I need to do it again with another encoder in KX3. There are 4 of them and they all are mechanical encoders...
This is the faulty encoder I removed from my Elecraft KX3. I know it looks ugly but I had no choice but to cut the pins to remove it. Tried a de-soldering kit that supposed to keep multiple soldering spots in a liquid state long enough to remove the component but it did not work for me... In the end the replacement was soldered rather nicely. I have no picture as I was eager to try it as soon as possible... The radio is working again!
My #hamradio projects go at a snail pace... Still, the 20m delta loop and a home brew 2:1 current BALUN seem to be working. Not spot on but close enough. Some wire trimming will be required...