Hi Jacob,
I was curious about that too, and did a little research and found that it is
basically a 1/2 wave dipole mounted to the driven element with a 1/4 wave
matching balun in tow. I made one for both my homebrewed 6m and 2M antennas
and noticed a substantial difference in my SWR and output power curves. Now
I'm no rocket scientist but it does a heck of a lot better than the gamma
matches I was using and my rigs like it a whole lot better.
If you have a copy of one the ARRL Antenna and Handbooks describe them a bit
more, if you don't I have a friend who has been building antennas for over
40 years who might offer some assistance, and who has helped me build a few
antennas (yagis) for my shack. His name is Charles Roberts, KB2ZSP and he
can be reached at crbr@together.net.
Hope this helps. BTW he owns a small shop and makes VHF beams in his spare
time and also has a relatively good supply of aluminum for building them for
a damn sight cheaper than one can get on their own from a supplier. Check
him out you won't be disappointed.
73 and GL,
Jim, N2YEV
n2yev@arrl.net
-----Original Message-----
From: vhfcontesting-admin@contesting.com
[mailto:vhfcontesting-admin@contesting.com]On Behalf Of Qrpvhf@aol.com
Sent: Monday, January 28, 2002 5:00 PM
To: vhfcontesting@contesting.com; vhf@w6yx.stanford.edu;
SixScatterWeakSig@yahoogroups.com; rover@mailman.qth.net
Subject: [VHFcontesting] Delta match queries. . .
Was looking at the plans for the old Hy-Gain 6element 6meter beam from the
6mt.com web site. It uses a dipole/T-match type feed system, however it
doesn't give any information about the matching system.
Therefore I was looking at using a delta match instead as I have made one of
them before and it worked OK, gamma matches have me lost in space.
Anyone have any advice or suggestions? ? ?
73's Jacob Tennant, K8JWT
Morgantown,West Virginia
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