• You can now help support WorldwideDX when you shop on Amazon at no additional cost to you! Simply follow this Shop on Amazon link first and a portion of any purchase is sent to WorldwideDX to help with site costs.
  • A Winner has been chosen for the 2026 July 4th Retevis RA89R Giveaway! Click Here to see who won!

PAL VFO PLUS “H” question

Crambone

Well-Known Member
I Support WorldwideDX.com!
Jan 22, 2019
563
175
53
57
I have a H model PAL VFO Plus with a 16.115 crystal in it. Can I change the crystal to a 16.420 and use with my Mark III ?
 

The listing for "H" says the output frequency is 16.115 MHz. This suggests a crystal frequency 5 MHz lower, 11 MHz plus a little.

If your crystal is marked 16.115, I'll be surprised. That would get you an output frequency above 21 MHz.

Sounds like the "H" version should work on the SSB Mark 3 transmitter the way it is. A tweak to the dial-calibrate trimcap should be all the conversion it would need.

73
 

dxChat
Help Users
  • No one is chatting at the moment.
  • @ BJ radionut:
    Scheduled for Jul 4, 2026 Saturday Live Streams:
    To celebrate the 250th birthday of our great nation. We are giving away not just one, but multiple antennas! The Grand prize is the CaHR-Tenna Hydra Antenna, along with several other antenna prizes that will be announced throughout the giveaway. Whether you're a new ham, portable operator, POTA activator, or an experienced HF operator, this is your chance to upgrade your station. Prizes Include: HRA Hydra Antenna (Grand Prize) Additional antennas from HRA More prizes may be added during the giveaway!
  • @ BJ radionut:
  • @ BJ radionut:
    CQ Worldwide VHF SSB/CW Contest: 1400Z, Jul 4 to 1400Z, Jul 5