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Thanks for the hint. Q1 is just fine. After re-examining the solder side with my magnifier (old 78 year old eyes) I found a missed Solder joint. Works as it should. Now to make some contacts.
On Thursday, April 2, 2020, 12:53 AM, Charles W. Powell via groups.io <doctorcwp@...> wrote:
It’s Q1. If you remove it and the receiver comes to life, you’ve found the problem. Don’t transmit without it but I had two Hilltoppers with this problem. It might have something to do with the characteristic of the individual transistor.
I have a newly built Hilltopper 20 and seems to be dead on receive. Transmit works and I hear the sidetone. What did you find with the T/R switch transistor? Thanks in advance.
Mike, W9QS Sent from Yahoo Mail for iPad
On Wednesday, April 1, 2020, 12:00 AM, Charles W. Powell via Groups.Io <doctorcwp@...> wrote:
I notice no one has responded to your message. Dead, as in no receive? Dead as in no transmit?
I had a problem with two of the Hilltoppers I built with the BS-170 that switches T/R not switching back to receive. Give a few more details on the problem.
Charles - 5H3DX
Have built a Hilltopper 40 and it seems dead. Is there any published information showing voltages through the circuit?