Re: LF: 500kHz

[Richard Newstead <g3cwi@btconnect.com>]

Dave Pick wrote:
> Richard
>
> I think most are "VFO" controlled... Centre of activity appears to be 
> between 502-503 with beacony things nearer the edges. If you came up 
> on 502.5 you wouldn't go far wrong!
Thanks Dave. I have had great trouble in getting the UEP VFO into the 
band as it initially would only just reach 500kHz. In the end I had to 
remove the trimmer and the 33p to deck, put a second resonator in 
parallel and couple them to the IC via 150pF instead of directly. With 
those mods I am now on 502.5kHz. I will need to check to make sure that 
it stays reliably on frequency (or in the band) over the likely supply 
voltage and temp range.
Still, I'm making progress.

73

Richard
G3CWI