VFO/VCO Frequency Drift

Compliments of Firestik® Antenna Company Technical Support Team

Copyright © 2005 Firestik® Antenna Company


  • Frequency Drift after 1/2 hour warm up time
  • Hum in radio with VFO/VCO turned on


Replace bypass capacitor 0.01mfd with a 0.25mfd mylar or polyester film cap. This capacitor is located above the circuit board which grounds the VFO/VCO board to chassis ground. Recalibration is required after replacement. See alignment instructions .

** Re-created from archived documents for historical purposes.

Firestik Antenna Company - 2614 E Adams St - Phoenix, AZ 85034 - (Tel) 602-273-7151 - www.firestik.com

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