Tuning up your QCX+
Автор: QRP Labs
Загружено: 2020-09-23
Просмотров: 35196
How to optimize your QCX/QCX+/QCX-mini for best performance.
Applies to the whole QCX range: QCX, QCX+ and QCX-mini.
From time to time people ask about low power output, particularly on 20m and 30m versions of the radio; the video shows my tune-up, test and adjustment procedure for a 30m QCX+ with TCXO and Enclosure options. Initial power output was just 0.77W but by the time I was finished, merely by adjusting the inductors, I had 4.6W (both at 12V supply).
The video also shows the oscillator calibration (using QLG1 GPS) and the receiver alignment procedure.
Links:
QCX+ http://qrp-labs.com/qcxp
QCX+ shop: http://shop.qrp-labs.com/qcxp
Assembled QCX+ in shop: http://shop.qrp-labs.com/assembled
QLG1 GPS: http://qrp-labs.com/qlg1
Power measurement tutorial: http://www.qrp-labs.com/qcxp/rfpower....
Our source for micrometals toroids: https://kitsandparts.com/
Our source for Vishay NP0 capacitors: http://digikey.com
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