But Uwe,
With a 100m Vertical you reach 1W ERP with 20W TX power! So 1,2kW will
be 60W ERP on 137kHz ;-)
If you think about the ratio between achieved signal to the effort you
have, this may be an alternative ;-)
73, Stefan
Am 03.03.2010 12:26, schrieb Warren Ziegler:
Uwe,
I use a loop for transmitting on 137kHz. the loop is made up of
coaxial cable with 2 turns in parallel spaced 3 meters apart.
The loops are approx. 24 meters vertical by 44 meters horizontal dimension.
With 1200 watts of transmitter power output, I achieve an ERP of 4
watts (measured).
The tuner is built to withstand high currents and voltages.
I have had several small fires when wires were too close together.
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