Re: [TenTec] OMNI VI VXCO help needed DK5AD

[Ken Brown <ken.d.brown@hawaiiantel.net>]

> Everything is based on the 10 MHz reference directly or indirectly. 
Except the BFO, which has two crystals and five trimmer capacitors. It 
is not locked to, or referenced to any other oscillator. Instability in 
the BFO could cause drift in only one sideband mode, but not on only 
certain bands.
The VCXO on the Passband Tuning Board also runs independently, not 
locked to, or referenced to any other oscillator. Since the same 
oscillator is used both to down convert the 9MHz IF to 6.3 MHz, and to 
up convert the 6.3 MHz IF back to 9 MHz, it cannot cause drift or chirp.
DE N6KB