[Antennas] VSWR on Log Periodic.
George, W5YR
[email protected]
Sat, 27 Apr 2002 08:46:01 -0500
Ditto - I ran the numbers quickly for 80 ft of 9913 at 30 MHz both from a
chart and from the equations and got less than 1 db total loss including
the negligible 2.2:1 mismatch loss.
Pat, that pencil needs sharpening! <:}
73/72/oo, George W5YR - the Yellow Rose of Texas
Fairview, TX 30 mi NE of Dallas in Collin county EM13qe
Amateur Radio W5YR, in the 56th year and it just keeps getting better!
QRP-L 1373 NETXQRP 6 SOC 262 COG 8 FPQRP 404 TEN-X 11771 I-LINK 11735
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Chris Adams wrote:
>
> Pat,
>
> I would suggest rechecking the calculations. Running ARRL TLW, with a
> 2:1 SWR at load, 100' 9913 @ 28MHz I get the following results:
>
> SWR @ input: 1.83:1
> Total line loss: .797dB with the SWR responsible for 0.153dB
>
> 73
>
> chris, n4vi
>
> Pat W wrote:
>
> > My rough calculations show that with 80 feet of 9913,
> > an Swr at antenna of 2.1:1 has 5.9 dB of loss.
> > The shack Swr shows 1.2:1
> >
> > Pat W0OPW