LF: GPS Locked source

["Andrew Talbot" <G4JNT@thersgb.net>]

I've made a few mods to the GPS locked source after finally calculating the
PLL parameters rather than relying on guesswork, sorry should read
experimental determination, so the residual phase jitter is now improved.

In usual 'JNT style I didn't keep details of who was sent the constructional
info, so if you want an update can you contact me directly please.

Andy  G4JNT