[TowerTalk] Need balun advice

[Mark Robinson]

As an experiment can you turn the A3WS at right angles to the TH-7 to 
minimise any coupling effects between the beams and measure the swr 
again.  This will be easier than moving the beams about which probably 
will not help.

What is the swr on the TH7.


73 Mark N1UK


On 10-Nov-15 12:54 PM, Chris Wynn via TowerTalk wrote:
> OK, see if this changes any opinions.  When I put up the A3WS at the towers nested height of about 30 feet, 12 meters swr was flat, 30 meters was flat, and 17 meters was around 1.8:1....
> Now, with the A3WS MOUNTED OVER THE th-7, 12 METERS is 1.8:1, 30 meters is 3.1:1, and 17 meters is 1.0:1........
> I have the A3WS mounted about 10 to 12 feet above the TH-7.  While talking to Mark at DX Eng., he brought up the issue of spacing between the TH-7 and the A3WS..... Originally, I thought that the 10 to 12 feet of space between the two would be enough.  However, at this point, I HAVE NO CLUE! Would it be worth moving the TH-7 above the A3WS?????
> While coming home for lunch,  I worked the 5Z4 on 17 meters with the tower nested.... Hell if I know at this point!!!
> AS TO THE QUESTIONS ON HOW I MEASURED THE SWR, I have used both the MFJ 259 and the radio's (FT-1000 field) and get the same measurements.... And have measured the swr at the end of the coax connected to the balun on the yagi.....
> The TH-7 is working just fine......
> I appreciate all of the help and advice...My XYL is livid with me as I have been totally consumed with these problems, and as much as I like RF, I LIKE "THAT" better and don't want to end up divorced;)
>
> Chris
>   Christopher L. Wynn
> Attorney-at-Law
> Christopher L. Wynn, ESQ., P.C.
> 8473 Earl D. Lee, Suite 300
> Douglasville, Ga., 30134
> (770)942-8661 (Landline)
> (770)577-1626 (Telecopier)
> chris at chriswynnlaw.com
>
>
>       On Tuesday, November 10, 2015 10:40 AM, "K7LXC at aol.com" <K7LXC at aol.com> wrote:
>     
>
>    >  Last week I had the antenna back on the ground and disassembled every trap on it, and found nothing out of the ordinary. ?     So what was the swr when it was on the ground? Did you check it?     You need to first ascertain that your antenna looks like an antenna; i.e. it has a dip somewhere. Put your antenna analyzer on the antenna and work your way back from there.      BTW many times an "antenna problem" turned out to be something in the shack; e.g. coax jumper, coax switch, etc.  Cheers & GL,Steve      K7LXCTOWER TECH
>
>    
> _______________________________________________
>
>
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk at contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk