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#3
October 13th 06, 02:32 PM
posted to rec.radio.amateur.boatanchors
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HAMMARLUND SP-400 Receiver
BC 779
"Richard Knoppow" wrote in message link.net... "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. -- --- Richard Knoppow Los Angeles, CA, USA |
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