"Andre & Sharon Walker" wrote in
:

Wow..looks like I opened a can of worms here!

Not really Andre.

Thanks to all for the many links and advice..much food for thought. I
think ill have to re assess I was considering end fed longwire also,
but an inverted V might be a better option. Anyway, should be on the
air within 4 weeks...the licence is the easy bit, diverting funds for
the radio from the XYL is the tricky part!!! But ive been offered a
FT101z , inc Yaseu Desk mix + spare set of finals ( is too early to
rember the number of the tubes off hand...just finished night shift),
so ill have wind the wick WAY back to start with. I don't care what
they say at the club...I like boat anchors!! ( I'd love to replace the
Murphy B40 I sold 10 years ago :-( )

Ok, now that more detail unfolds, a 7MHz half wave dipole, cut to
formula, with a modest length of coax, even RG58 up to 20m in length,
will deliver most (80%) of the transmitter power to the antenna to be
radiated, and the pi-coupled output in the '101Z will be tolerant of
the load presented to the transmitter. This is a pretty good way to
start, and you should be heard. You are about to be licenced to learn!

Unless you have an inline power meter specifically designed to measure
PEP, and that works properly, you can be assured that your PEP is less
than the maximum that the '101Z runs, which I think is close to 200W. The
tendency for FLs is to "talk it up to 10W" on an inline power meter that
doesn't respond to PEP, I call that 10 "Foundation Watts", they are not
PEP and they are not average watts, something else, but undefined since
most inline power meters don't give valid readings on anything but a
steady carrier.

If you would like to read some high level stuff about the PEP measurement
problem, see http://www.vk1od.net/VSWR/MeasureSSBTxPower.htm .

Catch you on air Andre.

Owen