Hi All:
NOTES:
Antenna RF link coupled to Pi tuner to 300 ohm twinlead ( about 100 ft long )
to 80 meter dipole @ 30 feet+/-
Thought these notes would be of interest to you on the subject of harmonics.
Unit
1929 Hartley osc., 204A - output 35 RF watts at 3.872
Spectrum Analyzer, Anaritsu
Probe 5 inches from RF tank:
3.872 -14 dB
7.742 -14 dB
15.485 - 27 dB
30.9 - 48 dB
Under 80 meter dipole center at 30 feet:
3.872 -20 dB
7.7 - 50 dB
At receiving station 1 mile away: no harmonics to be found.
Regards,
Steve
WA2TAK
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