Hi Bela, I would first check that the low-pass filter selection is working correctly. You measure the voltage on the banded (cathode) side of the six diodes used to select the filter. The two for the

#qdx #power

A new chat has been created: Hi, I am suffering with the QDX power on some of the bands. Perhaps you have an idea. Here is the pwr and low pass filters (LPF) per bands: 80m - 5W - OK-LPF1 60m - 5W - O

#qdx #power #chat-notice

Hi Stephen, I have seen this issue come up before. It can be filter selection issues or LPF toroid adjustments. The toroids to play with for 20/30 meters are L4 and L10. L4 was the critical one for on

#20m #power #qdx

I sort of intuited that but felt expressing the mode in the post would clarify to those that are not as savvy as to rig vs mode. I've been a CW op for 66 years and only have dabbled in SSB, FM & digit

#amazing #contest #power #poll #qcx

I love my dbl bazooka inverted V, but I like your idea of a fan. Will certainly be looking into that.

#toroid #40m #alignment #calibration #power

I tried using my lab power supply to power the 50w amp....not sure why I didn't think of that before. Anyhow, If I dial down the power supply to a little over 5v to the amp, I get 5w out of the QCX+ .

#50w #qcx #power

I have been running my 40 meter QCX Mini from a 13.2 volt battery for the last 4 months with contacts all over the continental U.S. from northern Ohio with everything working normally.. If you are ope

#20m #qcxmini #power

Fresh out of the box I inadvertently set up the keyer function of my new QCX+ 40M transceiver without running it into a dummy load or an antenna. I then learned I had most likely smoked the final tran

#dummyload #power #qcx

The BA00JC5WT is variable.. (full disclosure I know just enough to be dangerous) if I read this data sheet correctly a veriable resister(s) could be used at pin 4 and 5? I would love to learn more abo

#power

I'll second what Ron has said; and there is always the possibility of leaky caps...

#20m #40m #power

Thanks all and thanks QRP-Labs for the excellent Youtube videos. Removing one turn from L3 and compressing L2 further resulted in about 5W out with 13.1V (happens to be my battery voltage), and 6W wit

#20m #power

Hi all, i have been working with a SWR / Power meter for checking the output from the QRP whisper transmitter, the output is about 0.2 Watt, so my normal power meter can't measure the output. I have u

#dummyload #power