Krish,
I have the same antenna. I found if I tune it on the ground for 6.9MHz, as
the antenna is raised the tuned frequency increases to 7.1MHz depending on
height above the ground. Your mileage may vary but it's a good place to
start.
73,
John
N2HMM
-----Original Message-----
From: towertalk-bounces@contesting.com
[mailto:towertalk-bounces@contesting.com] On Behalf Of krishna
kanakasapapathi
Sent: Saturday, June 11, 2011 12:37 PM
To: towertalk@contesting.com
Subject: [TowerTalk] C4S-XL assembly/tuning tips
Hello all,
My primary day-to-day use antenna is a 20-6m 3Ele steppir @ 50ft.
I am contemplating on a second antenna at 72 feet for the telescoping tower.
Main goal is for a 2ele 40m. However, having coverage on other
bands is a plus(backup to the primary antenna).
I have a C4S-XL (23ft boom,C3S + 2 linear loaded 40m elements) and
am thinking of installing it perhaps.
The tower is in a tight spot due to the presence of trees around. Hence
cannot
raise the tower with the yagi installed on the ground. Tuning of the 40m
will
need to happen while on the roof. So, any sage advice on how to go about
getting the antenna tuned will help a lot. Tnx for reading.
73s
krish
w4vku
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