[TowerTalk] Change in SWR

[Hector Garcia,XE2K]

Doug
Your guy wires are  broken with ceramic  or philly ?

 
J.Hector Garcia  XE2K / AD6D
Mexicali B.C  DM22fp / El Centro
P.O.Box 73 
El Centro CA 92244-0073
http://xe2k.net
Tweeter @XE2K




________________________________
 From: Doug Scribner <dscribner at myfairpoint.net>
To: Towertalk <towertalk at contesting.com> 
Sent: Tuesday, December 3, 2013 8:29 AM
Subject: Re: [TowerTalk] Change in SWR
 

Thanks for all the responses...

To answer all the questions...

Inverted V was up when I made the initial measurements

Yagi was pointed at EU for both checks...I'm in the Northeast. Turning the antenna 360 degreees makes no difference.

The day before I checked it we had about 2 inches of rain.  Prior to that I believe the ground was pretty much frozen. There is probably still a lot of moisture in the trees surrounding the tower.

And tomorrow is predicted to be a sunny day and mid-40s so I'll get out and drop the 160 low dipole.

Thanks to all...

Doug - K1ZO

----- Original Message ----- From: "Doug Scribner" <dscribner at myfairpoint.net>
To: "Towertalk" <towertalk at contesting.com>
Sent: Tuesday, December 03, 2013 10:24 AM
Subject: [TowerTalk] Change in SWR


> I know, I probably should not get too hung up about this, but...
> 
> Six weeks ago I finished my second tower... 66 feet of guyed Rohn 45. I have a Mosley Pro-67B @ 68 feet and an 80 Meter Inverted V, with the apex at 64 feet.
> 
> Following the completion I went through all of my antennas and checked the SWR at various places in the bands. I wanted a "baseline" to make comparisions to should anything go wrong.
> 
> About a week ago I made a few spot checks. The only significant change that I found was on the Pro-67 and ONLY on 40 Meters.
> 
> Initial check - 7.0 - 1.6, 7.1 - 1.4, 7.2 - 1.5, 7.3 - 1.5
> 
> New check - 7.0 - 1.8, 7.1 - 1.9, 7.2 - 2.2, 7.3 - 2.1
> 
> All other bands/freqs are VERY close to what they were initially.
> 
> On the Mosley, the 40 Meter driven element is shared with 12 and 17. The director is shared with 10, 15 and 20. My guess is that a yagi problem would affect these other bands.
> 
> The only addition I have made is to add a 160 Meter Low Dipole for receive. It is 10 feet high with the feedpoint at the tower.
> 
> Is there a chance that it is interacting with the yagi 58 feet above it? I grounded the feedpoint of the dipole with no change.
> 
> I know I should drop the dipole to the ground but it was such a hassle snaking it through the woods I have held off doing that.
> 
> Any advice?
> 
> Thanks and 73
> Doug - K1ZO
> 
> 
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> 
> 
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