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SOLD - F/S ORIGINAL McCOY 9 MC FILTER W/XTALS




 
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Author Topic: SOLD - F/S ORIGINAL McCOY 9 MC FILTER W/XTALS  (Read 176 times)
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K3DUA
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« on: October 14, 2017, 08:08:13 AM »

SOLD
I have available For Sale, a really rare collector's item, a McCoy Crystal Filter in the original box with both the USB and LSB crystals, and the original instruction sheet showing a schematic for 7360 Balanced Modulator using this filter.   This has never been used!!   The filter is centered at 9.000 MC (old school designation) and it has a Bandwidth of 2.7 KC.  The associated crystals are marked 8998.5 and 9001.5 KC.   This filter was the heart of early SSB transmitters home-brew designs in the 1950-1960 era.  I want $100 for it, including shipping to you in the US.
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Got something interesting to trade, let me know.  Or make an offer.
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Contact me directly at k3dua@erols.com


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