[ARC5] U.S. WW II equipment

[WA5CAB at cs.com]

Sandy,

That's correct.  There may have been some MWO's accomplished when the 
nameplates were changed, as there were several years earlier when most ATC and 
ATC-1 became AN/ART-13.  The nomenclature change probably had more to do with 
the senior Blue Suiters trying to distance themselves from their Ground 
Pounder heritage than anything else.  :-)  AN/ARR-11 is a similar case.

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

In a message dated 07/02/2013 06:49:24 AM Central Daylight Time, 
ebjr37 at charter.net writes: 
> As I remember (correctly?) the ARN-7 was nothing more than assignment of 
> later AN number to the old SCR-269G radio compass set.  The ARN-6 was a 
> much 
> better set and smaller and easier to work on.  Seems like we had ARN-6's 
> in 
> the F-86D interceptors.  Only thing that used the old SCR-269G and ARN-7 
> was 
> our C-47 gooney bird.
> 
> 
> 73,
> Sandy W5TVW
> 
> -----Original Message----- 
> From: Mike Everette
> Sent: Monday, July 01, 2013 10:12 PM
> To: ARC-5 List ; Roy Morgan
> Subject: Re: [ARC5] U.S. WW II equipment
> 
> The only low plate voltage tubes in the ARN-6, as I recall, are the 28D7. 
> The rest are normal 12 volt filament types like 12SG7, etc.
> 
> And, the ARN-6 uses a vibrator to make high frequency AC for the antenna 
> and 
> indicator selsyns.  Except it's not all that high; maybe 130 cycles if I 
> remember right.  It's been quite a while since I worked on an ARN-6; but I 
> 
> remember that it was a darn fine radio... much better than the ARN-7 which 
> 
> it replaced, despite being lower in the nomenclature table.  And the 6 was 
> a 
> whole lot smaller and lighter.  Plus, it didn't have that screamin' meenie 
> 
> inverter to provide 115 volts at 400 cycles to run the receiver!
> 
> 73
> 
> Mike
> W4DSE
>