[Milsurplus] BC-342

[WA5CAB at cs.com]

Read the notes (fine print) on the schematic in TM 11-4001.  Audio mute only 
in BC-312-HX, M, N and NX.  Why, I have no idea.

In a message dated 2/28/2006 5:47:07 PM Central Standard Time, 
rickbras at airmail.net writes: 
> Need info....
> 
> My BC-342-D is obviously not wired as some or all of the 312 models are 
> to mute the receiver when on transmit, if you use that option.   I'm 
> probably missing something here, but that seems strange to me that it 
> wouldn't also have that feature since it has the relay connected and 
> disconnects the antenna when in transmit.  My question is, can I run a 
> wire from the relay to the grid of the 2nd detector VT-88 as is the done 
> in the 312 models or is there a conflict with the 342?  Maybe I'm over 
> looking something, but the way I see it the relay (when in transmit) 
> does nothing more than ground the antenna and the grid of the 2nd detector.
> 
> I ran a test by inserting 12 vdc on the correct pins of SO-1 and 
> operating the "Send/Receive" switch to see if the relay works and it 
> does.  It actually shorts out the antenna, but when I check to see if it 
> grounded the grid of VT-88 it has not.

Robert Downs - Houston
<http://www.wa5cab.com> (Web Store)
MVPA 9480
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