Wireless Set No. 52 Canadian - Project

[Chris Suslowicz]

Originally Posted by David Dunlop

With the Main Set Receiver now back in the Carriers No. 4 and no longer deaf, I made an interesting discovery There is an open circuit somewhere in the Sender where the Aerial Feed passes though to the Receiver. When I bypassed the suspected problem area with a jumper cable, the receiver sprang to life with contact to my dipole aerial out back and WWV came booming in loud and clear on Band 3 at 10.0 MC on the dial.
...
The plan now is to bring the Remote Receiver up to this level of performance and then go back to the Sender. I have to complete the cleaning of oily soot from the lower chassis surrounding the 813 Valve Socket anyway and can take a closer look at the aerial circuit as well. I suspect it might be a problem in the Band Selector Switch but could also be the relay in there that disconnects the receiver from the aerial circuits when the set goes into transmit mode may be stuck open for some reason.
David

The most likely culprit is the transmit/receive relay - either stuck in the transmit position or not making contact (dirty contacts) in receive. Another possibility is a short circuit somewhere in the aerial wiring or the gas protection tube is faulty.

But a great day nevertheless.

Chris.