[Swan] Swan VFO's - What is what?

[Bob or Chris Balonis]

Dave,

VFOs designed for 5.173 MHz Xcvr IFs include (all also include a RF gain pot
required for use with the model 400 Xcvr, no dual VFO switching):
    406/B - half height, partial freq coverage, for mobile use
    410 -  uses 8 sub-bands, replaced the 420
    420 - uses 20 sub-bands

VFOs designed for 5.5 MHz Xcvr IFs include (includes dual VFO switching):
    410C - Note dual VFO switching logic not included in this model
    508
    160 - Designed for use with the Model 160/X Xcvrs
    330 - Full HF band coverage designed for 600R/T

Misc:
    210 - For 10.9 Mhz IF model 250C Xcvr
    Crystal Controlled Oscillators


Regards, Bob  NB3W