Tuned Input Adjustments - Command Technologies COMMANDER VHF-2000 Manual

The tuned input circuits utilize an L-C-L or "T" impedance matching circuit
with a high "Q" design. These circuits employ RF phase compensating
inductors to reduce intermodulation products. The use of mica trimmer
type capacitors allows adjustments to precisely match the transceiver to
the amplifier. The rear panel provides easy access to these trimmer
capacitors.
Your Commander amplifier has a mica trimmer capacitor which is easily
accessed thru the rear panel. The tuned input circuits are factory tuned
and should not require any readjustment.
adjustments for any change in your preference for operating frequency
range. Also, slight adjustments may be necessary because of slight
variances in impedances between your transceiver and the tuned input
circuitry of the amplifier.
1. Install a SWR meter between the transceiver and the amplifier.
2. Make sure the Operate/Standby switch is in the operate position
and Your amplifier should also be properly tuned and loaded.
3. Apply drive and observe the SWR, and adjust the trimmer capacitor
for minimum SWR. Be careful not to overdrive the amplifier.
TUNED INPUT CIRCUITS

Tuned Input Adjustments

You can easily make