|
|
Post by cadillaccharlie on Oct 7, 2022 14:20:20 GMT -5
Hi All!
I have been trying to find the correct Pal VFO that will work properly on a Browning Eagle S-23 Transmitter. I've researched around and cannot seem to find a straight answer on what VFO will work with the S-23. Any help from this group that will lead me to finding the right VFO will be greatly appreciated!
|
|
|
|
Post by tubefan on Oct 7, 2022 14:27:26 GMT -5
None without modification. Your transmitter uses 27mhz crystals like cb walkie talkies. If you were to put a 27mhz vfo your receiver would pick up the signal like a signal generator. You need to be able to switch it off when receiving. You can use a 40ch cb with the final removed. Wait a bit for Grimace to see this. He has done it. Here is a video of his. youtu.be/P9Ac5vab2As |
|
|
|
Post by 2600 on Oct 8, 2022 0:01:15 GMT -5
Most 23-channel CB radios use internal crystal frequencies that get mixed together to make the 27 MHz transmit frequency. The PAL vfos are designed for this kind of "synthesized" 23-channel radio. This allowed you to cover 23 channels with only 14 crystals. Just one problem. Your transmitter is not synthesized. It has one crystal for each channel, and that crystal gets shut down until you key the mike.
Or until you press the "Spot" button. And that's the problem. Even if you modify the PAL to put out 27 MHz, you still have to unkey it if you want to hear anybody. If the slider continues to pump out 27 MHz while receiving, it will leak into the receiver just as if you were holding down the Spot button.
Tram and Maco each sold a VFO for this. It had a thin coax to feed into a crystal socket, and a single yellow wire that you connected to the radio's mike jack. This would key the slider when the mike is keyed. And shut it off so you can receive.
Pal never sold a version with this feature, and adding it won't be trivial. But that's the reason there isn't a version listed for that radio. Just not compatible without some redesign.
73
|
|
