On Fri, 21 Feb 2014, Sicnarf1 wrote:


Hello. I have "resurrected" an old Heathkit HW-16, and she now works
really well. She has an annoying noise in the speaker when switching
from transmit to receive, and I am wondering if anyone knows of a mod or
a fix for this problem?

Thank you for your time and consideration.

I thought it was like a receiver and transmitter in a single box, and that
the receiver stayed on at alll times. And while I can't remember why I
think this, I thought the antenna switching was a TR switch, ie a tube
between the output of the transmitter and the receiver, that cuts off when
it sees the full force of the transmitter output.

If that's right, you need to be more specific. If the receiver stays on
at all times, then there is likely to be some sort of noise. You need
to check with users of the transceiver to see what's "normal". If it uses
a TR switch, perhaps the tube is weak, and is acting differently than
intended.

I have no idea, the closest I've been to one is the ads in the magazines.

Michael VE2BVW