Need Help - Breting 12 Receiver

[David Hollander]

Finished recapping my Breting 12 receiver and it plays great on AM. With
the 10 inch electrodynamic speaker, it sounds better than my
SX-28...really! This is a 12 tube radio with a chrome chassis from
around 1935 covering 550 to 30 MHz

The problem is the BFO. When it is switched on, it works but their is  a
loud hum and the signals sound like a raw ac note. The paper caps were
replaced - the mica's are original.

Here is the schematic if it might help anyone with giving me
suggestions. It is in two pieces for better resolution.

http://www.dancris.com/~n7rk/breting12_1.JPG

http://www.dancris.com/~n7rk/breting12_2.JPG

Any suggestions would be greatly appreciated.

If anyone has a Breting 12 or any of the other Breting receivers, I
would be interested in their comments as to performance. problems, etc.

Thanks and 73,

Dave N7RK

--
***********************************************************
Dave  N7RK -  Webmaster CADXA http://cadxa.org
Phoenix, Arizona         *DXCC Honor Roll*    *WAZ#23 - 75 Meter SSB*

            ex-XE2/N7RK, N7RK/ZB2, VK2ERK, ZM0AJN, WB6NRK, WN6IWX

Boatanchor Collector Extraordinaire preferring Hallicrafters, National
and what ever else looks interesting!

E-Mail: n7rk at dancris.com           Home Page:
http://www.dancris.com/~n7rk