[Lowfer] HiFer M P info
Mitch Powell
mitch.powell at sympatico.ca
Thu May 27 17:52:29 EDT 2010
Just and add-on about the xmtr - FYI
A single Epson programmable oscillator chip( in the house ).
That is connected through a 3 stage toroidal (L/C) filter ( with >6dB
loss ) directly to the
120 feet of RG58u and then the ground level vertical
hidden in the trees - actually suspended from a tree branch.
Just put a meter on the chip - and with Vcc = 5V the current is 4.5 mA
so dc input is 22.5 mW. Efficiency = output ?
The coax is with bnc connectors, so 120 feet + connectors + two
splices - probably
loses at least another 3 dB.
There's sure not much left to be radiated.
Mitch
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