[Elecraft] KPA 100 Resistance Checks

I thought the following observations may be of help to anyone having difficulty achieving the KPA 100 resistance measurements on page 44 of Rev H of the KPA 100 manual. I initially performed the checks using a DMM with the PCB illuminated by a 40 Watt bench light a few inches away. Resistance

[Elecraft] KPA 100 Resistance Checks

I am building the KPA 100. I have just tried the resistance measurements on page 41 of the Alignment and Installation. The resistance measurements for the Q1 and Q2 collectors will flash 11 or 12K ohms then jump down to -6.5K ohms and then count up to -3.5K and then stabilize. When I first

Re: [Elecraft] KPA 100 Resistance Checks

I am building the KPA 100. I have just tried the resistance measurements on page 41 of the Alignment and Installation. Sounds like you are maybe running into the photoelectric effect on the PA transistors too. Do you have a strong light on the workbench?

[Elecraft] KPA 100 resistance checks

I've built the KPA 100 up to the alignment and installation steps and made the resistance checks at J3+ and Q1 and Q2 collectors (all of which are supposed to be greater than 10k). The instructions state that the J3+ resistance may initially read 0 because a large electrolytic must charge up and