Thread: Yaesu FT480R
View Single Post
Old 11th Aug 2019, 6:43 pm   #13
Julesomega
Nonode
 
Julesomega's Avatar
 
Join Date: Dec 2012
Location: Stockport, Greater Manchester, UK.
Posts: 2,085
Default Re: Yaesu FT480R

Remind me what the manual has to say about the freq generation system. All I can remember just now was there is a VCXO which is used for fine freq interpolation, with the varicap voltage set by a preset resistor chain. This was normal for that generation of synthesised transceivers.

I think you will find one of the oscillators increments in something like 2.5kHz steps over a 25kHz range. Or maybe it has only two steps, separated by 2.5kHz. See if you can find one oscillator that tries to do this but fails.
__________________
- Julian

It's good here
Julesomega is offline