[Elecraft] Audio Amplifiers without Pin One Grounding issue for us with the K3

[Walter Underwood]

For listening, you should not have serious RFI problems, so you can get any old good quality audio system and have fun. Think "dorm room stereo" and find a decent amp and speakers.

If you are transmitting, things get more difficult.

wunder
K6WRU

On Jan 10, 2014, at 8:01 PM, Robert Nobis <N7RJN at nobis.net> wrote:

> Jim,
> 
> Thank you. That is precisely why I have asked the question. What I am
> trying to find out is are there really any products that do not have the
> pin one problem?
> 
> 73,
> 
> 
> Bob - N7RJN
> 
> On 1/10/14, 8:51 PM, "Jim Brown" <jim at audiosystemsgroup.com> wrote:
> 
>> On 1/10/2014 6:59 PM, Robert Nobis wrote:
>>> I also use my K3 to listen to SW broadcasts and am looking for an audio
>>> amplifier that is immune to RFI and does not have the pin one grounding
>>> issue for the input/output connectors. I prefer something in the range
>>> of
>>> 10 to 25-watts of power to drive my speakers. Does anyone have any
>>> recommendations?
>> 
>> I wish I had better news, but most consumer products have "the pin one
>> problem." It's also common for RF to be coupled on loudspeaker wiring.
>> The RF side of this can be solved with ferrite chokes on cables
>> connected to vulnerable equipment.  Twisted pair loudspeaker wiring also
>> helps that part of the problem.
>> 
>> 73, Jim K9YC
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:Elecraft at mailman.qth.net
>> 
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>> 
> 
> 
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft at mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html

--
Walter Underwood
wunder at wunderwood.org