Sure it could. It changes various timing parameters. Thus circuits respond
differently, typically faster.
Sounds like a RF problem to me. And with all of your grounding efforts,
just how far above RF ground do you figure the radio equipment. Remember,
1/4 wave or maximum voltage on 10M is only some 8 or 9 ft. Although you
have used wide flat conductors which is good, they still have inductance and
thus appear to have some length, RF wise. You've provided lots of DC
ground but what about RF ground?
73
Bob, K4TAX
----- Original Message -----
From: "Tommy" <aldermant@alltel.net>
To: <tentec@contesting.com>
Sent: Tuesday, June 15, 2004 6:32 PM
Subject: Re: [TenTec] Orion Finished?
> I understand what your thinking. But I don't think RFI issues would show
up
> only when you install a firmware update?
>
> I also do not think (could be wrong however) I have a ground loop
problem.
> I have buried three, triangled 8' copper rods just outside my shack
window,
> connected together and to the utility power ground system with a #2 solid
> copper wire. I bring this ground system into the shack, again with a #2
> solid copper wire directly to a 1/4 inch thick, 5' long copper bar
attached
> to the back of my operating desk. My Astron R75 pwr supply, the Orion, the
> Titan 3, my KW Matchbox, and my computer are all commonly grounded to the
> same copper buss bar. I have a Polyphaser surge protector, screwed into
the
> buss bar, in the coax run between my Titan 3 and my Johnson KW Matchbox.
I
> have a 600' run of home made 4" spaced open wire feeders connecting my
> Matchbox to my 80m dipole. I use 1" wide, 3/16th " thick copper strap
> connecting the Matchbox and the Titan 3 and the Orion grounding points to
> the buss bar; I use a 1" wide copper braid to connect my PC chassis to
the
> buss bar. So far, I have no evidence of an RFI problem.
>
> If by a 'line isolator' you mean a current balun, the answer is h*** no, I
> would never have a balun of any type in any antenna other than a yagi.
(and
> no, please let's not start a thread on the 'merit' of baluns..please let's
> NOT!)
>
> I'm sorry, but I can't answer the question ' where is your RF ground ?'
>
> Would certainly appreciate any inputs on how I could improve this
grounding
> system.
>
> Tom - W4BQF
>
>
> > Since this only happens when you are running the Titan, I would suspect
> an
> > RFI issue - not blaming the hardware or software of the Orion. Now,
> maybe
> > there is something going on in the Orion that is more sensitive to RF,
> but the
> > basic problem - and the solution - may have more to do with eliminating
> ground
> > loops, improving the RF ground and isolating the Orion from the
feedline
> and
> > the Titan. Do you have line isolators installed between all the
componen
> ts
> > and where is your RF ground?
> >
> > k4ia
> > Craig "Buck"
> > Fredericksburg, Virginia USA
> >
> > _______________________________________________
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> > TenTec@contesting.com
> > http://lists.contesting.com/mailman/listinfo/tentec
>
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