[TenTec] noise on Orion II GROUNDING

[Kris Merschrod]

I have found on the Argonaut V that w/o grounding (As per the manual of 
course but real hams go for the smoke test first.)  there are problems of RF 
feedback etc.

It seems that grounds are essential to safty and everything else hence the 
best practice has always be and will always be GROUND THE WHOLE STATION.

KRIS km2km


----- Original Message ----- 
From: "Jim Weisz" <w3ka at lycos.com>
To: <tentec at contesting.com>
Sent: Thursday, January 19, 2012 12:36 AM
Subject: Re: [TenTec] noise on Orion II


> This may be a "long shot" but rather easy to try.
> When I first got my O2 about a year ago, I was anxious to
> quickly set it up and listen, to check it out.  Upon power up,
> it exhibited some odd glitches and noises, but otherwise worked
> fine.  After reading the caution in the manual about careful
> grounding, I added a grounding strap between the power supply,
> radio and the rest of the station.  The "gremlins" quickly
> disappeared..
>                                   73,  Jim W3KA
>
> On Jan 18, 2012, John Molenda <cdistflatfoot at gmail.com> wrote:
>
> On 1/18/2012 8:12 AM, Dean wrote:
>> I have had the same noise for several years. The noise bursts'
>> repetition rate coincides with the sweep frequency setting and noise
>> disappears when sweep is OFF. Noise amplitude in the speaker changes
>> with front panel audio setting. Noise appearance seems random (once or
>> twice a month) as I cannot link it with shack temperature, time of day,
>> phase of the moon, etc. and the noise remains until the O2 is powered
>> down. The noise appears only at power up and not during the time the
>> rig has been ON without noise. Is it a power supply issue?
>>
>> I sent the O2 to TenTec a couple years ago to have the noise problem
>> fixed. Paul kept it for about one month but said he could not reproduce
>> the noise.
>>
>> So I deal with the noise by power cycling the rig - it will disappear
>> after several power ON/OFF cycles in a row and I worry about damaging
>> transients when I do that frequently.
>>
>> Perhaps TenTec has found a fix since I first contacted them. I believe
>> it's worth a phone call to them John.
>>
>> 73, Dean
>> K3GGN
>> ~~~
>> On 1/17/2012 10:04 AM, John Molenda wrote:
>>> I am experiencing a rythmic static noise when ever I use the sweep on my
>>> Orion II the static seems to be half as loud as the signal coming in
>>> causing much interference . I have reset the radio several times and it
>>> does not help . If anyone has experienced such a thing please let me
>>> know . thanks John Molenda
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>>>
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> Thank you , well that is a perfect description of what is happening with
> my radio . I will speak with Paul . I am now asking if anyone else has
> this problem please let me know and I will use that to bolster my
> conversation with TT. John Molenda kb2huk
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