[TowerTalk] Tower and antenna decisions

[GARY HUBER]

I have recently replaced my 30 year old TH-7 on 50 feet of Rohn 45G with a 
new TH-7 on new Rohn 45G.  The boom length and maximum element of the TH-11 
and the TH-7 are the same; these are big antennas for a small lot and a 
small tower.  With the TH-11 on any rotor mast length you need to understand 
you will loose at least 24 inches to the boom support assembly and another 
18 inches or more from the tower top to the rotor.  A big antenna well above 
the tower top / bearing plate requires a strong mast. A 10 foot Rohn (DOM) 
mast is well over $170!

The difference in forward gain of the TH-11 and a Hex beam on 20m is about 3 
db or half a S-unit.  I can't give you a recommendation, but I've decided my 
next antenna is going to be a Hex beam.

73 ES DX,
Gary -- AB9M

-----Original Message----- 
From: Avery Davis
Sent: Wednesday, October 23, 2013 11:10 PM
To: towertalk at contesting.com
Subject: [TowerTalk] Tower and antenna decisions

Due to my small city lot and modest budget, and my need to have a tower
I don't have to climb, I have been looking very hard at the short
crank-up towers from US Tower.  My thought is to install one next to my
single-story flat-roofed house, and I could do much of the antenna
installation and maintenance work just standing on the roof.  My dilemma
is over which antenna and tower to choose.  My top choice for an antenna
is the HyGain TH-11DX, but the only one of the short towers that would
hold it safely is the TMM-433HD, which would put the antenna about 34
feet high.  If I got the tallest tower in this series, the TMM-541SS, I
could put a 15' mast on top to get an antenna nearly 50 feet high, but
it would have to be a smaller antenna like a HexBeam.  So, I am hoping
for advice from Hams who have been there, done that.
Which is better:
TH-11DX at 34 feet?
HexBeam at 50 feet?

73,
Avery, WB4RTP
_______________________________________________



_______________________________________________
TowerTalk mailing list
TowerTalk at contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk