[Milsurplus] Kluge conversion of 24 volt dynamotors to 12 volt

[WA5CAB at cs.com]

The radio used with SCR-522, 542 and 624 is a 12 (or 14) volt set.  The 
12/14 volt dynamotor power supply, the PE-98, looks just like the PE-94 
externally.  Internally the dynamotor proper has a 12 volt motor and the starter 
relay is 12 instead of 24 volt.  The radio 12 volt supply is from the 
dynamotor in both cases, not from the dynamotor in 28 volt aircraft and the aircraft 
battery in 14 volt ones.

In a message dated 7/19/2009 2:08:52 PM Central Daylight Time, 
cosmoline at aa4rm.ba-watch.org writes: 
> >
> >Which means that any MF/HF command set would have to be a late version
> >of the SCR-A*-183, and liason the SCR-187-A.  The VHF command set
> >SCR-542-A (12 vdc SCR-522-A) was readily available too.
> >
> >Mike / KK5F
> 
> 
> Mike I believe the 542 was the match to the 12V 4 chan vhf E1143(?)
> British set.  Have heard all British acft (Spits, Lancasters, etc)
> remained 12v thruought the war
> 
> The 522 was 12V from the electrical get-go and it's PE-73(?) dyno
> also had a 12vdc section to run all the relays &tube fil.s @ 12V
> from the 28v supply
> 
> I've never seen a 542's dyno but bet it's same as 522's w/o
> the 12V section.
> 

Robert Downs - Houston
wa5cab dot com (Web Store)
MVPA 9480