Re: [TowerTalk] K6STI Receiving loop question

[Pete Smith <n4zr@contesting.com>]

On the other hand, if it is a receiving antenna, do you care?  The 
additional loss in the feedline due to SWR *may* be trivial in this 
application.

73, Pete N4ZR

At 02:51 PM 11/18/2004, Joe - WDØM wrote:

> Hi Dave,
>
> Perhaps the easiest way (if you have an antenna analyzer or access to one) 
> is to check the impedance at the antenna using an antenna analyzer.  That 
> will tell you which way to go in modifying the turns ratio.  I just put a 
> beverage antenna together, and the analyzer was very helpful in assembling 
> the transformer.  I used my Autek analyzer - and it's probably the best 
> investment I've made to be sure every watt I own gets to the antenna and 
> then on to the other guy's radio.  ;-)
>
> 73,
> Joe
> WDØM
>
>
> At 11:47 AM 11/18/2004, Dave Quick wrote:
> > I recently put up a K6STI loop for 80m. It's about 8 feet off the ground
> > and built according to the plans in the Sep. 95 issue of QST. It's 21
> > feet on each side and I used 450 ladder (window) line and a 77 mix
> > ferrite bead for the transformer.
> >
> > My problem is that I can't get the SWR below about 3:1 or so. I do get a
> > dip as I adjust the cap, but never below 3:1. I'm guessing that I need
> > to adjust the turns ratio of the transformer, which is 4 turns to 10
> > turns as the QST article specifies, but I'm not sure which way to go
> > with the turns ratio.
> >
> > Does anyone have an advise for me?
> >
> > Thanks.
> >
> > Dave Quick K0EKL
>
>
> _______________________________________________
>
> See: http://www.mscomputer.com  for "Self Supporting Towers", "Wireless 
> Weather Stations", and lot's more.  Call Toll Free, 1-800-333-9041 with 
> any questions and ask for Sherman, W2FLA.
>
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_______________________________________________

See: http://www.mscomputer.com  for "Self Supporting Towers", "Wireless Weather Stations", and lot's more.  Call Toll Free, 1-800-333-9041 with any questions and ask for Sherman, W2FLA.

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