[BC] Vanguard - RCA BTA-1N1

[Ed Trombley]

Another transmitter built along the same lines as the Vanguard was the RCA 
BTA-1N1.  It used a linear 4xc3000F1 as the final and was built in a 19 
inch rack.  Very small foot print.  It may have been the smallest 1 kW tube 
AM box ever produced.  It had all the same bad habits as the 
Vangurad.  Output power of 1 kW @ 100% modulation pulled something like 
4500 watts from the AC line and dumped 12,000 BTU of heat.  Like the 
Vanguard it didn't sell very well.  In 25 years of playing radio I've only 
seen one in the field.

ET

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