I posted earlier about needing to put a toroid on the CW key front panel
jack on my Orion I, but I have not had a radio in this shack which has
not experienced some RFI problem. That includes both ICOM's and
Ten-Tec's. One of my main antennas is just 15' over the shack operating
position, and if I run the amp, I find out really quickly where the weak
spots are. I would hesitate to impugn the Orion for this as other rigs
have been just as susceptible. I had a Kenwood 440S/AT that couldn't
handle its own 100 watt output. On the Orion, I have to be running 800W+
before I see the problems, and then it is only on certain bands, which
leads me to believe it is line lengths that are partial wavelengths on
those bands and providing voltage node peaks at the rig. The Orion, in
my harsh RF environment, appears no more RFI susceptible than any other
rig that has been here. The exception might be the Omni VI+ which seemed
exceptionally RF proof. I wanted to add this before we started getting
into another "Orion is RF susceptible" thread again.
73, Duane
On Tue, 29 Aug 2006 11:45:36 -0700 (PDT) John Nason <jmnason@yahoo.com>
writes:
> The Orion seems to be a bit intolerant of RF. I
> noticed that many have had issues with RF the
> headphones and some others have had from the paddles.
> My Orion is well grounded but still had to wrap my
> head phone cables a few times in a toroid. I did not
> have to do this with my Kenwood which sat in the exact
> position the Orion does now.
>
> However I am not sure if this is Ron's problem or not.
> Certainly, with a linear, RF seems to be a reasonable
> culprit.
>
> 73,
> John NA9U
>
> --- Richard Detweiler <rdetweil@hotmail.com> wrote:
>
> > I'm Sensing from this thread that most of our
> > firmware lockups are from RF
> > getting into the radio.
> >
> > I wonder if I were to open one of mine up and go
> > through it with an eye
> > towards sheilding and rf bypass on the inputs if I
> > could reduce the
> > instances this happens.
> >
> > Best wishes,
> > Rich
> > K5SF
> >
> >
> >
> >
> > >From: ke5c@hot.rr.com
> > >To: orion@contesting.com
> > >Subject: Re: [Orion] Orion no Tx, no main Rx
> > >Date: Tue, 29 Aug 2006 11:42:39 -0500
> > >
> > >
> > > > What has happened twice now, is that the Orion
> > (1.373b5) is hung
> > > > up in an odd state:
> > > >
> > >
> > >if this happens only when you run high power,
> > suspect rf feedback affection
> > >the orion's control logic and circuitry. i have a
> > high rf shack, and as i
> > >increase the output power, usually the led's on the
> > front panel start to
> > >randomly flicker. if i keep pushing the power up,
> > i'll lock up the orion
> > >in a state requiring a power cycle for recovery.
> > how much rf is required
> > >varies from band to band. it doesn't matter which
> > firmware i am running.
> > >_______________________________________________
> > >Orion mailing list
> > >Orion@contesting.com
> > >http://lists.contesting.com/mailman/listinfo/orion
> >
> >
> > _______________________________________________
> > Orion mailing list
> > Orion@contesting.com
> > http://lists.contesting.com/mailman/listinfo/orion
> >
>
> _______________________________________________
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> Orion@contesting.com
> http://lists.contesting.com/mailman/listinfo/orion
>
>
--------------------------------------
Duane Calvin, AC5AA
Austin, Texas
http://www.ac5aa.com
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