Apolgies Brian and Joe..
I BOOBED in a big way in my last mail... So the
caps must have been stamped 8.6k, ( or 6.8k) and not 68k... Anyway Brian ,
you now have it from the " horse's mouth", and sorry if I led you astray...
Joe, Congratulations on a great design... I LOVE the R5/R7 antennae.
I built a homebrew version using a set of Cushcraft traps which were given
to me by a friend. I had a bit of problem making the matching unit, but I
got it going eventually.. What cores did you actually use for the choke
balun and the transformer Joe?. I love the design of the traps.. If they
take in water, or go off frequency, you can take them apart, clean them up,
and retune them easily.. Thanks again Joe..
73 to you both
de
John EI7BA < http://www.iol.ie/~bravo/>
-----Original Message-----
From: Joe Reisert <jreisert@jlc.net>
To: Brian Sarkisian <kg8co@lni.net>; towertalk@contesting.com
<towertalk@contesting.com>
To: <towertalk@contesting.com>
Date: 05 January 1999 01:13
Subject: Re: [TowerTalk] R 7 help
>
>Hi Brian,
>
>I find it hard to believe that the caps in your R7 matching unit broke off.
>Usually the rattling is the toroid which can break apart from too much
>power on the lower bands, especially if used on 80 Meters which is out of
>spec. range!
>
>Anyhow, when I designed the R7 matching box in 1991, I had been using 82
>pfd (if my memory serves me right) at 6 KV on the R5 but it was too much
>capacitance for the R7 so I put two of them in series.
>
>Hope this helps.
>
>73,
>
>Joe, W1JR
>
>
>>I have an old R7 that I take on trips and things of that nature. I
noticed
>>a couple month back,
>>something was rattling in the matching network box. Turns out that the
>>matching network CAPS
>>had broken off and we just rattling on the inside.
>>
>>Anyhow, I sent Cushcraft and e-mail to see if I could order the parts from
>>them. It turns
>>out that Cushcraft dosen't sell the parts nor would tell me what the
values
>>are so I can replace them.
>>
>>Though they did mentioned I could order a new networking box for $170.00
>>though.
>>
>>Was hoping someone out there had the values.
>>
>>You can sure tell the difference between Cushcraft and KLM. The last time
>>I chatted with
>>KLM, they bent over backwards to help me out.
>>
>>73 de Brian, KG8CO
>>kg8co@lni.net
>>
>>--
>>FAQ on WWW: http://www.contesting.com/towertalkfaq.html
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>>
>
>--
>FAQ on WWW: http://www.contesting.com/towertalkfaq.html
>Submissions: towertalk@contesting.com
>Administrative requests: towertalk-REQUEST@contesting.com
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>
--
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