[Milsurplus] DAV-2 On Off Wiring

[Ray Fantini]

It serves no electrical purpose, there is no path to ground for the secondary of the transformer or earphones when the radio is switched off. Its serves a mechanical function being that the rubber covered cable that feeds the headset and microphone needed a point to connection to the wire to the radio section. Post photos of the wiring in the radios head and you will see it's just a convenient way aid wiring and not having to install a terminal strip. I don't have my DAV in front of me but believe this to be the case.
Ray Fantini KA3EKH

-----Original Message-----
From: milsurplus-bounces at mailman.qth.net [mailto:milsurplus-bounces at mailman.qth.net] On Behalf Of B Smith
Sent: Thursday, June 17, 2010 1:04 PM
To: Milsurplus
Subject: [Milsurplus] DAV-2 On Off Wiring

I have some questions concerning the DAV-2 On-Off switch wiring. 

Schematic link at the bottom.

On the DAV-2 set why are the receiver ear pieces  connected to the A + when
the set is turned ON?
 
  Why do they connect the receiver ear pieces  through the output
transformer
and back to A +  when the set is turned OFF.

Yes, I checked the wiring and it is wired IAW the manual.
 
 
Please see:

(http://k4che.com/DAV%20Mystery/DAV-2%20Wiring.htm) 

73

breck k4che