John send your info if you don't mind, I'm too having some problems here
with the Orion
73's
Warren Bryant
kk4iz@mindspring.com
> [Original Message]
> From: <N0KHQ@aol.com>
> To: Tommy <aldermant@alltel.net>; <tentec@contesting.com>
> Date: 6/15/2004 7:46:14 PM
> Subject: [TenTec] RF Grounding
>
> Hi Tom,
>
> I read your email on the TT list about your Ham Station RF grounding
system.
>
> You asked for assistance, so here it is.
>
> In just a very few words, you have installed the biggest ground loop I've
> read about in a long time. Your antenna system is using your entire
station for
> the other half of the antenna.
>
> If your going to run SDR type equipment (Orion, Jupiter or peg), your
going
> to have to redo
> your RF grounding system.
>
> You should have "One" single point for grounding.......and it aint to a
bus
> bar behind your station, it should be on the lug nut on the back of the
Tuner
> and thats it. Purchase from TT a TT-1251......put it together and use it.
>
> Any wires, straps or whatever you have going to that bus bar must be
> disconnected and thrown away......including the bus bar.
>
> Inline with the coax leaving the Orion and going to your amp install a
"T-4"
> Line Isolator from Radio works. The linear keying line from the Orion to
the
> amp must be wound around a toroid, Radio Shack sells them.
>
> Your entire station, thats using 115vac, must be a dedicated circuit to
the
> service panel, other wise, that harmless little green wire thats running
from
> receptacle to receptacle is acting as an antenna and a ground loop.
>
> Computer systems (Orion, Jupiter and Peg) require special power and
grounding
> techniques. And, dont let anyone tell you any different.
>
> If your system is setup properly, you can run legal limit with your
antenna
> right over the top of your house.
>
> If your interested, send me an email and I will email back to you
> construction details for the system I run here.
>
> For those hams that dont have RFI problems................thats great.
>
> Later
>
> 73
> John / N0KHQ / St. Louis
>
> Always on 18.130
>
> Antennas:
>
> You can build 'em better than you can buy 'em
> Please visit the sites below:
> http://www.hamuniverse.com/17mcoaxmox.html
> http://www.cebik.com/n0khq.html
> http://www.ssb-audio.com/forum/
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