[Antennas] 1/4 wave vert,

Chris Boone cboone at earthlink.net
Thu Aug 21 21:43:52 EDT 2008


Just make sure you have a GOOD radial system underneath it...any vertical on
80 will not radiate worth a flip without the radials...and broadcast
stations use 120 1/4wl radials...
Any antenna, wider is broader bandwidth...a caged vertical wider made of
wires around the vertical support will have a wider bandwidth as they
emulate a WIDE pipe :)
Chris
WB5ITT
Society of Broadcast Engineers member


-----Original Message-----
From: antennas-bounces at mailman.qth.net
[mailto:antennas-bounces at mailman.qth.net] On Behalf Of Jim Miller
Sent: Thursday, August 21, 2008 11:53 AM
To: nss at mwt.net
Cc: antennas at mailman.qth.net
Subject: Re: [Antennas] 1/4 wave vert,

Joe;

Our 80 meter Hy-Tower customers remove the stubs for 10-40
and add aluminum to the "stinger" on top for a full size 1/4w vertical.
They remove the wire in the center, bond the aluminum to the tower at the
top,
and feed the base section. The 24' of tower adds to the bandwidth
with the aluminum. Centered at 3.650, they use them on the entire
band without any physical stub changes from CW to the DX window.

Regards,

Jim, K4SQR
www.comteksystems.com
Our 19th year of Hybrid Couplers
Comtek, the 4-Square Experts\



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