[TenTec] Orion Finished?

[Tommy]

I agree with what you are saying Bob. Can you offer an explanation as  to
why it did not change these same parameters you mention when I set the audio
L/R/Spkr to MAIN and it does happen when I have these parameters set to
BOTH? And it does not happen if I go back to v1.370?

I don't operate 10 meters, or at least not since I have had the Orion. I
primarily operate 40 and 20m CW.

Would you mind explaining to me how one gets a good RF ground?

Thanks.

Tom - W4BQF



> 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 at alltel.net>
> To: <tentec at 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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>
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