Tom,
Maybe the shielding in the audio cable to the input of the speaker is
inferior. If the audio input cable is detachable, try using another one of
higher quality.
73's
Howard #3
----- Original Message -----
From: "Tom Behler" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Monday, May 07, 2012 8:56 PM
Subject: Re: Interesting RFI Problem
> Steve:
>
> When the speaker is disconnected from the Rig, I get no RFI. No RFI
> either
> through the TS590's internal speaker, or through any other external
> speakers
> I have tried, both amplified and nom-amplified.
>
> 73 from Tom Behler: KB8TYJ
>
> ----- Original Message -----
> From: "Steve" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Monday, May 07, 2012 8:32 PM
> Subject: Re: Interesting RFI Problem
>
>
>> Did you try the speaker disconnected from your rig as well? Try
>> disconnecting it from both, what happens?
>>
>> You connect the quarter-wave counterpoise to your tuner/rig ground.
>>
>>
>>
>> ----- Original Message -----
>> From: "Tom Behler" <[log in to unmask]>
>> To: <[log in to unmask]>
>> Sent: Monday, May 07, 2012 6:18 PM
>> Subject: Re: Interesting RFI Problem
>>
>>
>>> Martin:
>>>
>>> I tried the speaker with the wall-wart disconnected and on battery
>>> power,
>>> but no joy.
>>>
>>> I also tried chokes on both the wallwart power cord, and the speaker
>>> wire,
>>> but again, no luck.
>>>
>>> I don't have small-enough chokes to tri for both conductors in the
>>> speaker
>>> wire and the wallwart wire, but that is an interesting thought.
>>>
>>> Keep those ideas coming!
>>>
>>> Tom Behler: KB8TYJ
>>>
>>> ----- Original Message -----
>>> From: "Martin McCormick" <[log in to unmask]>
>>> To: <[log in to unmask]>
>>> Sent: Monday, May 07, 2012 3:00 PM
>>> Subject: Re: Interesting RFI Problem
>>>
>>>
>>>> You might disconnect the speaker from the wall wart and
>>>> the audio source which means, of course, that you can't use it
>>>> right now, but see if the RFI is still audible. Then, connect
>>>> the wall wart but leave the audio input lead off and see if your
>>>> RFI comes back. It is possible that it is coming in via both the
>>>> audio input cable and the power cable. You might need chokes on
>>>> both sides of the audio input line and both conductors in the
>>>> power cord from the wall wart.
>>>>
>>>> Bob Martin writes:
>>>>> I had that problem on 40 meters with a set of Utah speakers. Tryed
>>>>> chokes,
>>>>> shortening the leads to the speakers, and finally a counterpoise for
>>>>> 40
>>>>> as I
>>>>> was on the second floor. The counterpoise did the trick. Made it by
>>>>> shorting a 33 inch of ordinary electrical wire on one end and
>>>>> attaching
>>>>> the
>>>>> others to the terminals on my tuner.
>>>>>
>>>>> 73:
>>>>> Bob Martin
>>>>>
>>>>> EchoLink Node - 55127
>>>>> Please visit http://www.wan-leatonks.net.
>>>>> ----- Original Message -----
>>>>> From: "Tom Behler" <[log in to unmask]>
>>>>> To: <[log in to unmask]>
>>>>> Sent: Monday, May 07, 2012 7:04 AM
>>>>> Subject: Interesting RFI Problem
>>>>>
>>>>>
>>>>> > Hi, all.
>>>>> >
>>>>> > Well, I have an interesting little RFI problem here in the home
>>>>> > shack
>>>>> that
>>>>> > I've been scratching my head over lately.
>>>>> >
>>>>> > At the estate sale I've been talking about, I picked up a Realistic
>>>>> > 32-2040
>>>>> > amplified speaker. The speaker either runs on 6 C-cell batteries,
>>>>> > or
>>>>> the
>>>>> > supplied 9-volt wallwart.
>>>>> >
>>>>> > The speaker sounds terrific, with excellent quality audio that I
>>>>> > can
>>>>> > adjust
>>>>> > in terms of tone and volume from the speaker itself.
>>>>> >
>>>>> > However, when I transmit with my TS590, using my amplifier, I get
>>>>> > lots
>>>>> of
>>>>> > RFI through the speaker itself.
>>>>> >
>>>>> > I have tried RF chokes on both the Wallwart power cord, and the
>>>>> > phono
>>>>> plug
>>>>> > connection between the Ts590 and the speaker itself, but no joy.
>>>>> >
>>>>> > I have tried running the speaker just on batteries, but still get
>>>>> > the
>>>>> RFI.
>>>>> >
>>>>> > Obviously, this particular speaker is more susceptible to RFI than
>>>>> usual,
>>>>> > since I don't get the RFI at all when using other speakers such as
>>>>> > my
>>>>> > Motorola amplified speaker or just a standard external speaker.
>>>>> >
>>>>> > Does anyone have any suggestions as to what else I might try?
>>>>> >
>>>>> > I'd love to use the speaker since it sounds so good, but the RFI
>>>>> > issue
>>>>> may
>>>>> > make that impractical in the long run.
>>>>> >
>>>>> > 73 from Tom Behler: KB8TYJ
>>>>>
>>>>>
>>>>
>>
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