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Title: SOLD - F/S ORIGINAL McCOY 9 MC FILTER W/XTALS Post by: K3DUA on October 14, 2017, 08:08:13 AM SOLD AMfone - Dedicated to Amplitude Modulation on the Amateur Radio Bands
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. - Got something interesting to trade, let me know. Or make an offer. - Contact me directly at k3dua@erols.com |