开云体育

JD I think Andrew suggested that capacitors may be the issue. There are two large smt capacitors in the filter section after the PA section. I removed these and measured them. The result is as

Steve Great info. I will consider these measurements, especially the ALC section. Thanks Tommy [email protected]> wrote:

Thank you for this update, Pentti OH5KOA. This is great news!? ?It was a difficult repair in many ways, and you did very well to find the parts.

Tommy, This file in the Group's Files section shows RF levels at key points from the IF output to the Antenna output.? Typical ALC levels are also shown at the

Update, the coil cans I ordered have arrived and have also been installed. High-quality and functional parts, which I did wait a little while for. The radio now works great. I can recommend the

RL801 may not be making good contact. You can check the levels with your scope. I would use SSB and whistle in the Mike for tracing to keep the power dissipation low. [email protected]> wrote:

Take a good look at RL801 [email protected]> wrote:

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: