I can cite one case, Field Day this year, where the operator of a K-3 said
the Eagle was causing a problem. I took my Omni VII and put it on the desk,
the antenna, and the power supply where the K-3 was located. The complaint
was no longer observed. This also occurred with a TS-590. Not being
intimately familiar with either the K-3 or the TS-590, I believe in both
cases the issue was either the operator and his adjustment of the radio or
the radio itself. I suspect it was more the operator and his adjustments.
I know we had a serious operator issue with an Orion II at the site, thus it
received some negative comments.
I had my HP spectrum analyzer at the site, just in case some "crud"
developed or was present. Nothing of concern was observed with any of the
transmitters. One particular JA brand had some nasty clicks being generated
in the CW mode. As a solution it was moved to a SSB position.
73
Bob, K4TAX
----- Original Message -----
From: "Richards" <jruing@ameritech.net>
To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
Sent: Wednesday, July 18, 2012 12:33 AM
Subject: Re: [TenTec] OT: Field Day Drill - intermod issues
> Great... just the sort of answer I can use !
>
> I was hoping for a groundswell of information on it... so I could be the
> best informed guy next year... I will have to Google and read my
> Antenna Book and ARRL Handbook and study up on it. The K3 guys point
> to us TT guys, and say our rigs are bothering their rigs, so it we are
> the problem, but I don't think so - but cannot yet explain who is the
> problem or if nobody is, and will need a solution regardless of who gets
> the blame. (Man... I do NOT want to get into a brand war over it...)
>
>
> ---------------- K8JHR -----------------------
>
> On 7/17/2012 3:46 PM, Stuart Rohre wrote:
>
>
>> Lowering the contest power to 100 watts greatly mitigates possible inter
>> station interference.
>>
>> We used double shielded coax this year which allowed 3 100 watt
>> stations to have 3 coaxes run together to exit the room at the same
>> window. I did not expect it to help all that much and was using it for
>> the pre made lengths of it I had. Only if the 20m phone station got
>> very low in the phone band did the nearby CW station seem to desense the
>> receiver. That was a simple QSY to fix. No band pass filters were
>> used. Antennas were a vertical against a inverted vee about 125 feet
>> apart.
>>
>> I am certainly glad I had the chance to use double shielded coax.
>> The vertical had a tuner at the antenna with remote cable control, and
>> the doublet had a coax choke at its feedpoint, of RG8x
>>
>> -Stuart Rohre
>> K5KVH
>> _______________________________________________
>
>
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>
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