W4UK;
>Any recommendations for a "high-reverse isolation buffer" circuit?
http://www.telepostinc.com/LP-PAN Software Defined IQ Panadapter for Elecraft K3 (prototype stage)...
* Optimized for K3
* Up to 192 kHz display on PC
* 8.215 MHz center frequency for centered display
* Switching quadrature detector for 100dB dynamic range
* < -130dBm noise floor
* Buffer amp with very high LO isolation
* Fully isolated inputs / outputs with high quality audio xfmrs
* Works with many SDR programs... custom apps to come
* Point and click frequency control with PowerSDR and HRD
* Shielded metal enclosure in development
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