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

On Jan 1, 2022, at 5:30 PM, [email protected] wrote:

https://www.navy-radio.com/manuals/nt/NT-900109-3.30.xfmrs.pdf

Page 42

SECONDARY 3200 VCT 0.163 AMP WHEN USING HIGH P R I M A R Y
2740 V  0.153 AMP DC WHEN USING LOW PRIMARY
4750 TURNS CT, 0.0159 E WIRE, 233 OHMS DC. 

Roy Morgan
K1LKY since 1958
[email protected]
Western Mass





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