Richard Knoppow wrote:
"North Lake Audio" wrote in message
...
Sold from 1946 * 1948.
Good condition.
http://cgi.ebay.com/ws/eBayISAPI.dll...9134&ssPa geN
ame=STRK:MESE:IT&ih=005
Thanks,
Steve
This is NOT a Super-Pro 400, it is an earlier receiver,
looks like military surplus SP-200. The exact model depends
on the frequency range. The missing label on the front was
the military identifier. Three frequency ranges were offered
535KC to 20Mc (standard) 1250 KC to 40 Mc, and a version
covering 100kc to 400Kc on the two lower bands and 2.5 mc to
20Mc on the upper three. There is a fair amount of material
on the web which will alow identifying the particular model.
If the original bottom cover is present it may have a
schematic diagram pasted to the inside which will also
identify the model. A large number of these receivers were
built under contract by Howard Radio Co. The SP-200 series
was replace by the SP-400 in 1946. The SP-400 has continuous
coverage from 535Khz to 32Mhz. In addition, the band
indication is engraved or printed on the front panel rather
than on the skirt of the bandswitch knob. I wonder if the
power supply is around someplace. They are not impossible to
build but the original would be nice. Most military
receivers came with rack mount supplies.
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Richard Knoppow
Los Angeles, CA, USA
The SP-400-X coverage was from 540 kc to 30 mc. The SP-400-SX covered
1250 kc to 40 mc. Those were the only two variants.
But, you are correct on the bandswitch and panel engravings.
Just wanted to set the record straight.
H. State