[TowerTalk] 80M antenna suggestion

[ersmar@comcast.net]

Richard:

     Congratulations on the success with your shunt-fed tower.  Welcome aboard!

     Regarding a wire for 80M, if I hadn't suggested this to you before, here it is:  a half-sloper wire hung off your tower from near the top.  I installed this antenna beneath my Bencher Skyhawk and it seems to work quite well for semi-DX (Europe/SA) at 100W.

     I referred to this posting from N4KG and K2AV several times for folks asking about 80M wire antennas:  http://lists.contesting.com/archives//html/Towertalk/2002-01/msg00186.html .  I've described this before as one of the most cogent discussions on the subject that I've ever read.  I learned a lot from it that I then applied that knowledge to my sloper design and installation.  

73 de
Gene Smar  AD3F



> Hi,
> I finally finished my 160M shunt-fed tower antenna and it works superbly.  Lots 
> of work but I think it will be worth it.  I want to thank all those that gave me 
> suggestions for this antenna.
>  
> My next project is to get an antenna for 80M.  I have been investigating several 
> options and want any feedback regarding them.  To summarize my setup so far - I 
> have a single 72 foot 4-section US Towers crankup tower with a 12-element 7-band 
> Sommer antenna for 10M through 40M at about 75 feet.  I also have, of course, 
> the 160M shunt-fed antenna on this tower.  I have large (60-70 foot) cottonwood 
> trees about 75-85 feet to the west of my tower and my home (about 30 feet above 
> ground) about 75 feet to the east.  I have 56 ground radials totalling about 
> 5000 feet of wire radiating from the tower for the 160M shunt-fed antenna.  I 
> have two " conduits underground from my tower to my shack to run any coax and 
> control cables.  I also have a K9AY loop for 80m/160m receive about 80 feet to 
> the southwest of my tower.
>  
> I have been looking at the following for 80M: a) inverted-V, b) inverted-L, c) 
> Delta loop  for 80M.  I can attach a 3-4 foot standoff on my tower at the top of 
> any of the sections to attach any of these three antennas.  My question is do 
> you  have any suggestions as to which of the three antennas (or any other you 
> feel might be better) I might have the best luck with on this tower for 80M? 
> Also, for any of these you might recommend what suggestions for coupling the 
> coax to the antenna.  Do I need a balun or direct connection?
>  
> Thanks much for your generous help,
> Richard - KJ7CU
> _______________________________________________
> 
> 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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