Sounds like a plan, Vic :-)
BTW -- did you manage to get that antenna repaired?
73, Phil W7OX
On 1/12/15 9:09 PM, Vic Rosenthal wrote:
So why do I need an amplifier? I can just double my power by detuning my
antenna tuner!
Vic K2VCO /4X6GP
On Jan 13, 2015, at 6:54 AM, Walter Underwood <[email protected]> wrote:
All power ends in a load.
Forward and reverse power measures standing waves, but all those waves go into
some kind of load. Nearly all of it, if you are lucky, goes to the antenna. The
rest goes to heat. Forward and reverse is just a way to measure standing waves.
It does not mean the some percentage of “reverse power” is disappearing into
your power amplifier.
If you are running legal limit into forward power, you are quite likely running
illegal power into the the antenna.
I was happy to get a C+ in my fields and waves class at Rice, but I do
understand this stuff.
wunder
K6WRU
CM87wj
http://observer.wunderwood.org/
On Jan 12, 2015, at 8:32 PM, Vic Rosenthal <[email protected]> wrote:
I'm talking about forward minus reflected power. If you neglect losses, that is
how much power gets to the antenna to be radiated. A wattmeter that measures
forward power will be misleading if the SWR is high. My antenna has an SWR of
about 2.5:1 on 40 m. When the transmitter delivers 100 watts to the line, there
is about 120 watts forward and 20 watts reflected. I want a mode in which the
wattmeter reads 100 watts in this situation.
Maybe 'delivered' is a bad choice of word. I mean something like 'power
delivered by the transmitter'. Obviously it would take magic to know how much
power gets to the antenna after losses!
Vic K2VCO /4X6GP
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