Final amplifier Bias

Stephen Farthing #171 Hi Yan, Can you check that R6 is 6K8 please. Regards, Steve -- It is vain to do with more that which can be done with less.
"Yannick" #174 Hi Stephen, Yes I checked R6 already and it is 6k8. R8 is closer to 1,8K than the stated 2,2k in the schematic. The closer potentiometer I have in my spare box is 5k. I tried to had 1k to R6 but without success. Then I realised that potentiometer is turned all the way down to 0V. I tried to disconnect R6 and as expected no change. Measure rectified voltage with my RF probe is around 3V and the FET is getting hot... Perhaps my probe is not accurate but I am sure the power does not exceed 200mW since it is the lowest power I can measure with my Wattmeter and the needle is not moving at all. Thanks for your help. 73, Yan -XV4TUJ. toggle quoted message Show quoted text --- In QRPLabs@..., Stephen Farthing <squirrox@...> wrote: Hi Yan, Can you check that R6 is 6K8 please. Regards, Steve -- It is vain to do with more that which can be done with less.

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