being one of Belgium's primary repeater keepers, I put a lot of stress and attention on having correct deviation on my systems, and I keep on telling people to adjust (=decrease) their deviation. Everybody using the latest generation of kenwood rigs is being shouted at for a far overdriven deviation. The standard is 3kHz, and most manufacturers keep on selling WFM radios producing over 5 kHz...
Unfortunately, my recent birthday present, the FT-857, apart from having a very weak HF-frontend, is proud of producing an overdeviation on FM. It is not possible getting the rig to become a decent performer in the 12,5 kHz european world only using the FM mic menus, so here is the solution:
- Press A B C simultanuusly when powering on.
- Select (rotary button) item 061 DEV-W and adjust (dial) for 125 (=3 kHz deviation)
- Select item 062 DEV-N and adjust for 50 (=1.5 kHz deviation)
- Select item 065 CTCSS-DEV and adjust for 160 (=500 Hz deviation)
- Press Function to exit
- Adjust FM MIC Gain in the menu for 15 (was 50 default)
and now you are ready to start on FM without ruining the adjacent channels.
Thanks for your cooperation keeping the spectrum clean (and narrow)