[AMRadio] Bad news on BC1-J Mod trans.

[K9MUF at aol.com]

In a message dated 3/20/2002 12:49:05 PM Central Standard Time, 
billsmith at ispwest.com writes:


> I looked up what I think is the mod transformer in the Peter Dahl catalog.
> Too bad about the replacement cost, but notice that there are apparently 
> two
> secondaries on the transformer.  Have you identified both secondaries?  (My
> apologies if this is too simple.)
> 
> GATES BC-1 MOD TRANSFORMER
> P/N 478-0410-000
> CORE) A-0525/ C-CORE         STYLE #) 09  HIPERSIL C-CORE
> 
> PR) 2450 VCT PP 833A'S
> 
> S1) 1800 VAC @ 750 VA
> S2) 80/110/155 VAC @ 8 VA
> 
> DM) HT = 10.625 WT =  7.375 DT =  6.750 MD =  4.750 MW =  5.750
> PRICE)    $995.00 Plus S&H FOB El Paso, TX    WEIGHT)   49  LBS
> 
> 73 de Bill, AB6MT
> billsmith at ispwest.com
> 

What is the meaning of voltage ratings when given for a modulation 
transformer? These surely don't mean breakdown voltages.
I have a modulation transformer from an RCA broadcast transmitter. The 
specification plate on it says:  PRI  - 2560V CT at .25A ,       SEC  -  
2100V at.31A
How can I relate these ratings to impedances?
This transmitter used a pair of 4-400's modulated by a pair of 4-400's

Thanks

Don    k9muf


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