it is my experience some of the cheaper speakers and even the more expensive
probably have a grounding issue with the audio amplifier in them. I've
never had luck with chokes or anything but my problem was on hf while using
an amplifier. I now have everything fully grounded and I don't get a squawk
out of anything at all.
Solution? try another set of speakers or like some have said move your
antenna within reason. It hopefully will go away.
Brian, k5in
----- Original Message -----
From: "gale conard" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Monday, January 24, 2005 7:59 PM
Subject: Re: interesting RFI problem
> Hi Tom,
>
> It is probably the portable CD player. Those things have no shielding or
> any other rfi protection. If He is using external speakers, the wires are
> probably acting like antennas. Toroids might help, but . . .
>
> Good luck.
>
> 73,
> Gale
> [log in to unmask]
> ----- Original Message -----
> From: "Tom Behler" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Monday, January 24, 2005 7:02 PM
> Subject: interesting RFI problem
>
>
>> Hi, all.
>>
>> As many of you already know, I teach at a University here in Michigan
> called
>> Ferris State University. I am in an office building on the second floor,
>> and my office is in the middle of a row of adjacent offices on that
>> floor.
>>
>> Over the past 3 or so years, I have been using an Icom ICW32A HT with a
>> 3-amp regulated power supply, and a twin-lead J-pole, mounted on one of
>> my
>> office walls. Any qsos I have had have been either on our local 2-meter
> or
>> 440 repeater, and my maximum power has been 5 watts.
>>
>> Up until today, I have never had any complaints of RFI from any of my
>> colleagues. However, late this afternoon, the guy next to me said that I
>> was coming through either his computer speakers, or the speakers on a
>> portable CD player that he is using. Why he couldn't tell me which ones,
> I
>> don't know, but I was clearly coming through something.
>>
>> Obviously, I could reduce my power to the low power setting, but that may
>> make it harder for me to get into our 2-meter repeater which is about 12
>> miles away. I also could run the HT on battery power, which likely would
>> eliminate or at least lessen the problem.
>>
>> Does anyone have some other suggestions I might try on my end to help
>> deal
>> with this problem?
>>
>> I want to "keep peace" in the office, but still operate when needed.
>>
>> Best 73 from Tom Behler: KB8TYJ
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>>
>>
>
>
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