Hi Jim,
Have you considered using RG-303 or RG-400 ? They're commonly
available on the internet and at hamfests at discount prices. Its similar
in diameter to RG-58 but rated well over 1500 watts on 160 meters.
However...
You don't need a high performance choke on your vertical unless you
have elevated radials or a sparse radial system with few radials or
short radials. A good low impedance radial system will provide
excellent common mode suppression.
73
Frank
W3LPL
----- Original Message -----
From: "Tony N2TK" <tony.kaz@verizon.net>
To: topband@contesting.com
Sent: Friday, March 30, 2018 11:22:18 AM
Subject: Topband: 160M Balun
I shunt feed my tower for Topband. Presently using a Comtek 100 bead balun.
After reading K9YC's article on baluns it would seem that a stack of five
#31 cores with 7 turns of coax would be a better balun.
Would I notice an improvement in any way by switching baluns?
If the answer is I would notice an improvement what about using sixteen
turns #12 THHN wire on #31 core as shown in K9YC's article? How many cores
would I need for 1500W?
Tnx for any feedback
N2TK, Tony
_________________
Topband Reflector Archives - http://www.contesting.com/_topband
_________________
Topband Reflector Archives - http://www.contesting.com/_topband
|