[TowerTalk] Hy-Gain Discover 7-3

[Michael Ryan]

I really liked that antenna, but I think it was up too high. I had a PAIR of
the old shorty fortys side mounted down the tower which many times did
better, especially into Europe from Virginia. But to the Pacific the higher
antenna did seem to work better.  Good luck with it and have fun.  - Mike

-----Original Message-----
From: towertalk-bounces at contesting.com
[mailto:towertalk-bounces at contesting.com] On Behalf Of Kenneth R. Goodwin,
Jr.
Sent: Wednesday, June 02, 2010 10:54 AM
To: towertalk at contesting.com
Subject: Re: [TowerTalk] Hy-Gain Discover 7-3

You ran into the same problem I did with the hairpin.  You would 
think that after 30+ years, that dimension would have been 
corrected.  The solution is to move the entire element assembly (all 
three elements).  I will send you the dimensions I used.

I found the electronic versions of the manuals to be slightly 
deficient as compared to the printed manuals.  I will send you the 
dimensions I ended up with including compensation for using a Hy-Gain 
balun, the expensive one.  Conclusion, it works like a champ on a 
small range of frequencies. Optimized for the CW end with the 
resonant point being 7.08 MHz, it has a bandwidth from 6.9 MHz to 
7.18 MHz where the SWR is less than 3:1.  It is an awful lot of work 
for 3 S-units but at times I am more than glad I have 'em.  Ken K5RG

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