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using the 4 variable capacitors in the exciter's output circuitry.

Don't rely too heavily on the picture you see on your local TV monitor since the 10 Watt transmitter will probably overload it. Try to have an on-the-air station, remotely located, assist you. If you use a coupler, detector and oscilloscope to tunc up the rig, you may note a 1 5 to 20 MHz oscillation on the signal. It will generally not be observable on your TV monitor. To attenuate fhis parasitic signal, adjust LI through

L5 for minimum oscillation

amplitude.

A complete A IV station is shown in Fig. 13. Be sure to use hardline and a good antenna for best performance. As explained in the QRP article, a separate receiver is required to derive audio from a signal using the audio-on-the-carrier format.

Important Design Notes

Amplifier power output is highly dependent upon power supply voltage, A I volt difference can result in a 3 Watt difference in output

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