I was replying to Roy Morgan's post.  He forgot to change the subject line when he wrote his comment, and I compounded the problem by not changing it myself.  Mea culpa.

On 1/10/2022 12:44 PM, howard holden wrote:

Actually it looks like a filament trans. Only two secs, and they’re both 10V. The 1780V RMS to ground is prob a high pot rating, not a winding.

 


From: Doran Platt
Sent: Monday, January 10, 2022 7:04 AM
To: Michael Hanz; Robert Downs; Roy Morgan; [email protected]
Cc: ARC-5 List; [email protected]
Subject: Re: [ARC5] [Milsurplus] Navy Transformer CRV 30810

 

Looks like it would supply HV to a CRT indicator and fil.

KK3HVG

On 01/10/2022 6:36 AM Michael Hanz <[email protected]> wrote:

 

 

It's actually on PDF page 97 of 154.  As you can see, it is for the Navy Model NMC-1 Echo Sounding Equipment, Contract NXss. 23136, Submarine Signal Co., Boston, Mass. Feb. 5, 1943.

On 1/10/2022 1:23 AM, Robert Downs via Milsurplus wrote: 

Roy,
 
I would call that an HV x-former, (with filament winding.)  Not a filament transformer.
 
Where did you find the -30- listing?
 
Robert Downs
 
-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Roy Morgan
Sent: Sunday, January 9, 2022 22:57
To: [email protected]
Cc: ARC-5 List; [email protected]
Subject: Re: [ARC5] Navy Transformer CRV 30810
 
Amazing.
 
For many decades I have had here a filament transformer
CRP· 301721
And though it does have markings telling the voltages, I was amazed to find it listed in the 30-class transformers listing
 
Roy Morgan
K1LKY since 1958
[email protected]
Western Mass