Dear Wilber, This is the method that I am planning to use. I ordered some micro cutters to aid in that process. I also ordered a Qwik chip kit to do the SI5351 chip. I will be delay the repair

Brilliant Bob thanks for sharing 73s Ted 2E0THH

https://youtu.be/GzN-D0yIkGQ -- 73 KD8CGH

Following along and providing encouraging comments to see how this turns out. I like the idea of an all in one kit without the need for a separate power source!

Colin, A trick you might want to try is a 1/4 wave wire attached to the QCX ground. A 1/4 wave wire looks like a ground to the RF. Ed AB8DF

My repackaging project is just about complete, shown below with it's younger brother. I abandoned the idea of using the tactile pushbutton switches due to space constraints. The Hammond enclosure I

Hans, could you either add the TCXO connections to the schematic or add my diagram to the synth manual? Also, a photo of the ProgRoc synth board with the TCXO instead of the crystal. I have bigger

Check that the 27mhz crystal is soldered well. A lead that is not soldered could be coupled to the circuit by a small parasitic capacitor that varies a large amount with changes in temperature, a

Thanks. Neat idea. Would work on some labels too as if the toy, etc., is encased in plastic the heat gun warps the plastic when removing the price tag. Dave K8WPE Dave K8WPE David J. Wilcox’s

Mike, For the newer guys reading this you might explain what “tappets” are. I still have a couple sets of feeler gauges around here someplace for tuning up my old VW engines. Ha! Dave K8WPE

David I use foil to screen everything else. 73 Alan G4ZFQ

When we modified DVD players we used to heat the first ic pin up at one end and then slip a feeler gauge (the type used to set tappets) under the pin, then heat the next pin up and slip the gauge

My wife buys a lot of items for gifts and they always have price tags on them. I use a similar tool to heat the tags and make removing them very easy. Another way to qualify for “brownie

Hi Bob, Tripp Apologies for my confusion. I have updated the Si5351A Synth kit manual at http://qrp-labs.com/synth and there is now a tracks diagram at the bottom of page 3. 73 Hans

I've been repairing electronic equipment for many years. Here is what I do 1. Carefully cut all the legs of the IC 2. remove the legs from the circuit board one at a time 3. clean up the board with

Hi all Quite a lot of people have been asking about QCX-mini. QCX-mini manufacturing has slipped a couple of weeks longer than my estimated "4 weeks". But all is going well now... I had some trouble

I am puzzled like the others. I presume rig is transmitting and receiving on the same frequency. You can sniff the internal xtal oscillator with a general coverage receiver to see if it is way off. Of

That works just fine for the parts it's designed for, and a METCAL is the top of the line for conventional soldering equipment. It's more than most ham builders need, but use it if you've got it! But

After checking everything I could think of and re-winding a couple of the low pass filter coils with no real advancement, I decided to pull the final transistors and check them. That transmitter is

On Mon, Nov 9, 2020 at 01:35 PM, Mel Farrer wrote: I use the METCAL station with tips for each part size including flatpack gate arrays. Of course their 30 + years old, the tips that is. And the