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JD I was able to access each of the relay leads from the top side of the PA board. I found that each relay had the 14VR supplied at the relay coil. The voltage is 10.5V and falls to 9.2V when tx is

Very well said, Tommy has removed the PA transformer and resolder it top side, but he was still only getting low power, so does not make much sense KR Andrew ?Get BlueMail for Android ?

(PA 1) The RF comes from L305? through HF03 to RL-801 (PA 2) (changes from orange to blue and out through (A). to (PA 3) the bandpass filters. There are a pair of relays that have to be energized for

Ok it is a cap, I had this, a 390nf cap measured 50 of, and did attenuated lower frequencies. Change a few caps ?Get BlueMail for Android ?

Hi Tommy Have you tried removing J101, drive to hf PA. You can then put the radio into TX mode and check continuity of circuit after C327. You should be able to check circuit through the relay and

JD, Thank you for the insight. I appreciate the response. I agree with your comment that there may some kind of fault past the L305 transformer. I have looked for broken traces in the path through

Hi There is an path problem broken track or inductors or SC caps. You need to to feed a DC in reflected path to drop the power to a few watts current no more than 3 amps, then signal

Here here 100% ?Get BlueMail for Android ?

Tommy, Pay careful attention to what I am saying here. If you key the radio RTTY, AM, FM, CW and you are drawing 20 amps AND if you key the mike on SSB and you draw just a couple of amps you are

Andrew I am retired but sometimes household task take priority. I can discuss radio things most afternoons. I did measure the transformer output in CW mode at 28 MHz and saw 6+ watts and 20amps. I

Right ok Assuming you work you tell me, 23:00 is 18:00 your end, or we could do a weekend ? 73 Andrew ?Get BlueMail for Android ?

Oh !!! Well done how much current was it drawing when you were measuring 6 Watts, now you can put a watt meter try FM or CW see if you get 100 Watts. If the rig draws 20 Amp and you are only getting

Andrew, I am in Tallahassee FL. Eastern time zone. Tomorrow would be better for me. What is a good time for you? Tommy [email protected]> wrote:

Andrew I removed the PA board, separated the transformer and reinstalled the board so I could access the transformer output on the top side. See photo attached. Tommy [email protected]> wrote:

How much current? It might be better to set up a teams meeting, how far behind are you in time, I am GMT KR Andrew ?Get BlueMail for Android ?

Yes indeed, CW or AM would be my preferred option, also you need a PEP Watt meter. KR Andrew ?Get BlueMail for Android ?

Andrew Yes the power supply amps does peak with the modulation. I do have a generator. I have used it when setting tx gain and output power for vhf/uhf. Tommy [email protected]> wrote:

Hi as you removed the PA board how did you then power it up, did you have ribbon extensions? KR Andrew ?Get BlueMail for Android ?

In SSB mode current draw should be low until audio is being modulated. I would expect high current draw when using carrier modes

Hi Tommy, Is it still drawing 20 amp from the power supply? When you are speak into the mic,? do you have an audio dig generator? KR Andrew ?Get BlueMail for Android ?