Binaural Receiver Update

Swapped out the experimental variable cap I was using for tuning and installed a salvaged 27 to 267pf variable cap.  Also made some voltage measurements for my data book.  The tuning range is 6.99 MHz to 7.199 Mhz with the LO signal level ranging from 3.6 to 2.3 dBm.  All voltage measurements are in Vrms.  Removing the inductor moved the tuning range up about 40 KHz…but I have left it in circuit as I am only interested in the CW portion of the band.

Ceramic Resonator Osc-1-jpg

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