[TowerTalk] A3S Tuning Question

[Bill Aycock]

Tom--

I have the earlier model of this antenna; They appear to differ mainly in 
manufacturing details. I tested it by aiming it straight up at about 4 feet. 
It matched the curves in the users manual very closely. Your readings all 
seem to be high.

They put the values to be expected in the manual, and I think they are 
available on the net. Do you have the manual? How is yours connected to the 
feed line?

Good luck--Bill-W4BSG

----- Original Message ----- 
From: "mrlogs" <mrlogs at verizon.net>
To: <towertalk at contesting.com>
Sent: Wednesday, March 18, 2009 3:58 PM
Subject: [TowerTalk] A3S Tuning Question


> Greetings all...
>
> I'm checking the A3S I have presently on the new tower (work in 
> progress)..I have the Reflector  cranked up about 10 ft from the ground 
> (antenna facing up at 45 deg angle) and get these SWR readings on my AEA 
> Analyst:
>
> 14150: 2.25
> 14200: 2.47
> 14250: 2.53
> Lowest SWR below band at 13900 at 1.63
>
>
> 21200: 2.13
> 21300: 2.67
> Lowest below band at 20.900 at 1.1
>
>
> 28300: 2.07
> 28350: 2.17
> 28450: 2.38
> Lowest below band at 27600 at 1.08
>
> Yeah..I know this will "pass"..but are the SWR(s) all lowest below the 
> band cause it's low to the ground...or can it be tweaked to move resonance 
> up to the band...The instructions just say to have it 3ft or so above 
> ground to check it..I have it about 10..Are these antennas tweakable 
> (tunable)?..What do you tweak..the driven element..or just leave well 
> enough alone?
>
>        Thanks Again!
>            73'..Tom  N3ZC
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