Hi Dallas and All.
> Dave, Thanks a million for the help. That's exactly the formula that I have
> been
searching for.
> It is correct and plugs into basic very nicely. Now I can continue with my
> xmission line
> matching and find values that yield acceptable matches with the help of
> W4RNL's fine
> tutorial on the subject.
Dallas, you can do it with program TL:
http://qrz.com/files/antennas/tl.zip only 30Kb and free
This program can calculate what do you need and more.
One screenshot from it:
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TL (Transmission Line), Copyright 1993-1994, ARRL -- by N6BV
Length of line: 30.00 ft
Frequency: 145.000 MHz
RG-58A Cable
Matched-line attenuation = 1.97 dB
Real part of load impedance at antenna (ohms): 1
Reactive part of load impedance (- cap., + induct., ohms): -50
SWR at load: 100.01
SWR at line input: 4.31
Additional line loss due to SWR: 11.93 dB
Total line loss: 13.90 dB
Real part of impedance at line input: 14.5 Ohms
Imaginary part of impedance at line input: 24.1 Ohms
At 1,500 watts, maximum rms voltage on line: 576.7 volts
Length from line input for peak voltage = 1.64 ft
Maximum rms voltage rating of cable: 1400 volts
Choose another Frequency (F), Zant (Z), or Transmatch ([T]). Quit <Q> ?
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73 de Serge UT2IO.
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