No one building a 15KW amp will be that stupid to use 10-12 ga wire to
connect the pi to the antenna.
And that wire must be very long that you can measure a Z of 250-500 ohm.
On the amps by Telefunken, Siemens, Rohde&Schwarz, Harris, Collins etc. I
saw, coax was only used on long runs from the pi net to the output.
Otherwise the pi was connected directly to the output connector or
directional coupler with wide copper strap.
In my Harris amp the directional coupler is a bird thru line coupler with QC
connectors, antenna side with HN socket, pi side with open terminal screw on
type.
73
Peter
-----Original Message-----
From: Amps [mailto:amps-bounces@contesting.com] On Behalf Of Jim Thomson
## Place 10- 12 ga wire a couple of inchs above the chassis , and u will
end up with the eq of 250-500 ohms.
This creates too may problems imo.....esp on QRO amps like the 5-15 kw
variety.
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