and your filter values Damien?
i use those pll chips myself in various tx's..6.25khz to 100khz steps and
have no problems so will dig out the values for 6.25khz for you tonight to
compare.(using LF351/(6) (i think) as filter.
also pll built on double sided pcb (1w exciter.)
no seperate screening apart from vco coil,vco regulated with 78L08,( which
also supplies the 145152) noise is not a problem.sounds like as you suspect
really bad vco overshoot.
"Jim Pennell" wrote in message
nk.net...
This link is to a webpage which shows quite a few PLL design program
links. I am not sure which will best fit your application, but it is a
place to start. Actually, many of them may be able to help sort things
out.


http://www.circuitsage.com/pll.html



Jim Pennell
N6BIU