Explanation of VFO as one part of the the tuning variables in mixers
Jan 26, 2022 · In a superhet, the tuned frequency can be the sum (or difference) of multiple oscillators, one of them often a VFO (an oscillator variable in frequency by changing a variable …
What is the use of dual VFOs? - Amateur Radio Stack Exchange
Jul 29, 2020 · What is the value of more than one VFO in an HF transceiver? Many novice rigs only have a single crystal oscillator, and a vast number of famous classic transceivers, HF kits, …
How to convert a crystal controlled tranceiver to VFO (aka ... - diy
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 with a VFO by …
How can I avoid accidentally transmitting with a Baofeng UV-5R?
Jun 1, 2015 · I can confirm setting an offset works to disable transmit for frequencies in VFO mode on the UV-5R. I think you don't have to specifically set it to transmit 0Hz - anything out …
What is a 'Call' Channel? - Amateur Radio Stack Exchange
Feb 28, 2021 · While programming my Icom radio it has MR (memory)channels, VFO (Variable Freq) channels and Call Channels. What are call channels as comparred to memory or vfo …
What do the WSJT-X split frequency options actually do under FT8?
Jun 30, 2024 · This works best on older radios where the VFO settling time can be quite long, but split mode uses a "real" separate VFO that can be switched in instantaneously. If "Split" is set …
Brand new BaoFeng BF-F8HP - Amateur Radio Stack Exchange
I found an answer for this online. Apparently there's a bug in the firmware of the various BaoFeng handie-talkie models (UV-5R family, BF-F8HP, and others) that causes frequency offset to …
hf - Can the external VFO input in a Heathkit SB- (100, 101, 102) be ...
I've got a Heathkit SB-102 that I'm working on making operational (problems with transmit, receiver works just fine). This model radio has a 9-pin Molex connector in the back, intended …
transceiver - What is the difference between RIT and XIT?
Jul 30, 2020 · XIT means that your VFO frequency will be offset from your dial frequency while you are transmitting. So a dial frequency of 7125 kHz and a RIT of +1000Hz will accomplish …
How can I key low voltage and still keep a tube VFO running ... - diy
Sep 22, 2023 · I'm interested in building a VFO based single tube CW transmitter. These devices are known to have issues with frequency drift and chirp; frequency drift can apparently be …