[Antennas] VSWR on Log Periodic.

[Don Havlicek]

In my opinion, the ONLY meaningful SWR measurements are AT THE ANTENNA..
NOT at the shack!
Don - N8DE

Dave Shrader wrote:
> 
> I have an 8 element LP [Tennadyne T8] at 40 feet on Rohn 25 over New
> England soil. Tonight temp is 45F, Humidity is 50%, soil is average New
> England with grass growing without irrigation. It slopes off by 10 feet
> to the north.
> 
> I made some claims regarding VSWR from 13 MHz to 33 MHZ. Attached are
> the actual readings at my location using both the VSWR meter in ICOM 746
> and a Daiwa CN 101L
> 
> Frequency       VSWR
> 14.0            1.3
> 14.1            1.3
> 14.2            1.3
> 14.3            1.4
> 14.35           1.4
> 
> 18.07           1.5
> 18.17           1.4
> 
> 21.0            1.7
> 21.1            1.7
> 21.2            1.7
> 21.3            1.6
> 21.4            1.5
> 21.45           1.5
> 
> 24.89           1.5
> 24.99           1.7
> 
> 28.0            1.8
> 28.1            1.7
> 28.2            1.5
> 28.3            1.3
> 28.4            1.2
> 28.5            1.1
> through 29.5    1.1 [every 100KHz from 28.5 to 29.5 is 1.1]
> 29.6            1.2
> 29.7            1.2
> 
> Not bad for a nominal 5.8 dBd antenna. These readings are unique to my
> location and should be used only for nominal purposes of supporting my
> assertion that a LP is uniformly a VG antenna across the 20 meter to 10
> meter ham bands.
> 
> Dave, W1MCE
> - - -
> 
> Your moderator for this list is:
> Larry Wilson KE1HZ antennas-owner@mailman.qth.net
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