It's always a good idea to assume that there will be RF problems in any
transceiver installation that involves an amplifier and set up the wiring
accordingly. Even my TS-870 had problems with RF getting into the amp
keying line which required a ferrite filter to fix, so now I automatically
install filters on all cables entering and leaving the radio that might be
magnets for RF problems.
Of course good grounding is essential. I piece of 3/4" copper water pipe
under or behind the operating desk, with braid from the transceiver,
amplifier, low-pass filter, station computer, etc. that goes to a ground rod
and to the AC ground (via at least a #6 conductor per coded requirements)
goes a long way toward reducing RF problems as well as AC hum that gets in
on audio circuits.
Ron N6AHA
----- Original Message -----
From: "Richard Detweiler" <rdetweil@hotmail.com>
To: <ke5c@hot.rr.com>; <orion@contesting.com>
Sent: Tuesday, August 29, 2006 10:50 AM
Subject: Re: [Orion] Orion no Tx, no main Rx
> 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.
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>
>
> _______________________________________________
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>
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