Jan 26, 2022 · In a common type of single conversion superhet, the tuned frequency is the sum of an IF frequency (say 455 kHz) and the VFO frequency. So the VFO frequency (as measured …

Jul 29, 2020 · By switching to the other VFO you can tune around to find a free frequency, then switch back to propose the new frequency. Or you may use it as sort of a "memory". Perhaps …

May 2, 2014 · Things to be aware of if you go this route are that the VFO frequency will need to be offset from the receive frequency (by the 1st IF freq.). Also, VHF/UHF rigs may also need …

Apr 20, 2019 · The Heathkit HW-7 offered the option of crystal or VFO control via front-panel pushbutton switch. Pierce crystal oscillator Q5 was repurposed as a buffer amplifier for use …

Oct 19, 2019 · Alternately with the VFO tuned to 11753 kHz, the image frequency becomes 19756 kHz, because 19756 - 11753 = 8003. Again, either choice works. Your design choices must …

Sep 5, 2020 · XFC: (On most Icom hf rigs for the last 25 yrs) Primary function- hold down to adjust your TX Freq&mode (vfo A/B) during split operation. Compression (speech proc)= turn on for …

Oct 27, 2019 · This model radio has a 9-pin Molex connector in the back, intended to connect an external auxiliary VFO. By design, this feature is intended to support "split" operation -- …

Dec 3, 2020 · "Geloso VFO" became very popular, it is estimated that nearly half of the 50s/60s amateur population in Sweden had at one time or another operated one, often together with …

Aug 20, 2022 · 1. In VFO mode, enter a valid frequency using the keypad numbers. 2. Use [menu]+1 and the arrows to set the Tone Mode to TX+RX 3. Use [menu]+2 and the arrows to …

Feb 28, 2021 · From the radio device perspective, a call channel is not that different from a regular memory channel, except it doesn't have a number, there's usually one per band, and …