[Milsurplus] Re: DY-86?

[Mike Morrow]

Eric wrote:

>The "D-10A" (A.R.C. 14482 DMX310) spex are: 25v 1.7a in, 250v 850 ma out.
>Is the DY-86 the same,or is it hunkier still?

That 850 mA number is a typo.  Actual is 85 mA.  The DY-86/ARN-30 is the JAN nomenclature for the A.R.C. D-10A.
 
>the reg'lar ARC-5 dyno is just a tadge too puny to power the T-whatever 
>along with the Rx.

The ARA, SCR-274-N, and AN/ARR-2 (AN/ARC-5) receiver dynamotors are rated for 250 vdc, 60 mA output, so the DY-86/ARN-30 (D-10A) at 85 mA output is rated at more than 40% higher current output (and fully *twice* the power output!), yet it looks almost identical to the earlier dynamotors.

I own an R-19 receiver, from military service, that has a DM-32-A lockwired on.  I guess the military technicians sometimes took that route if the receiver wasn't going to power a transmitter.

>The /ARN-30 suggests the dyno was intended for a radio compass. Izatso?

No, there were several versions of the AN/ARN-30, but they all were VOR receivers.  The commercial designation was the A.R.C. Type 15.  One could consider a VOR as a radio compass, but I think of radio compass meaning something like the later A.R.C. Type 21 (AN/ARN-59) set, which used a rather different external dynamotor type.

>Additionally, the ARC-60 is an "SCR" type of designation, and mightn't mean 
>any particular radio component, tho the manual I have (TM 11-522) shows 
>R-508, CV-431, C-423, and C-1917.  We all know most any of the numbers could 
>be different, and the lash-up still get called ARC-60

The manuals I've seen show the AN/ARC-60 as a well-defined radio set consisting of certain specific components:  Normally a R-508 with DY-86, and two CV-431A, plus assorted peripheral components, all with JAN nomenclature.  The only variation of the AN/ARC-60 is a simplified version with only one CV-431A.  I tend to think of the AN/ARC-60 as a USAF set, but the single CV-431A version was installed in the USN T-34 trainer aircraft that I flew in at NAS Corpus Christie 35 years ago.

The A.R.C. Type 12 gear appears to have had principally the US Air Force as its customer.  Even when a unit bears only a commercial name tag, there's almost always a USAF contract number or "U.S." on the tag.  The utilization of the A.R.C. Type 12 gear could be in any of a large number of different combinations, unlike the AN/ARC-60.  I like that C-37, R-11A, R-19A, two T-11A, and SCR-619 (BC-1335) combo that is shown in many A.R.C. Type 12 manuals.

Mike / KK5F