I just kind of like this picture. This is the HT-37 dial that came with the HT-37 VFO assembly I recently bought. Note the retro designation: KILOCYCLES. And note the nice, even, linear spacing of the VFO. This VFO runs 5 -5.5 MHz. The circuit is a series-tuned Clapp. That circuit seems to be one of the secrets of getting linear tuning -- to avoid the common situation of having all the upper frequencies kind of bunched together at the end of the capacitor's tuning range. I notice that this circuit was used in the Galaxy V VFO and in the VFO of the Yaesu FT-101, both notably linear in their tuning.
March 28, 2024. Just another Day at the Office.
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FT-8 with a RPi Zero W
Given the FT-8 achievement maybe even QUISK would work on the RPi Zero W
for a really small SDR Transceiver.
But all that g...
1 hour ago
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