Fan noise on FT8?

[Elecraft mailing list]

It seems that, when the fan starts on my K3, a series of vertical lines appears on the WSJT Wide Graph.  Every 60Hz would be kind of obvious.  What's causing that?  What can I do about it?  (other than keeping the power low enough - 8 watts or less - to keep the fan from kicking in)

73  de Peter, AE1TK3 # 3701
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[Joe Lynch]

Dear Peter,
Maybe your mic is picking up the fan noise and transmitting it over the air. Try disconnecting your mic and see what happens.
Sincerely,
Joe Lynch, N6CL

    On Friday, December 1, 2017 3:44 PM, Peter Drexel via Elecraft <[hidden email]> wrote:
 

 It seems that, when the fan starts on my K3, a series of vertical lines appears on the WSJT Wide Graph.  Every 60Hz would be kind of obvious.  What's causing that?  What can I do about it?  (other than keeping the power low enough - 8 watts or less - to keep the fan from kicking in)

73  de Peter, AE1TK3 # 3701
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[Elecraft mailing list]

Hi Joe,
The mike is disconnected. 
Peter, AE1T
 

    On Friday, December 1, 2017, 10:16:43 PM EST, Joe Lynch <[hidden email]> wrote:  
 
 Dear Peter,
Maybe your mic is picking up the fan noise and transmitting it over the air. Try disconnecting your mic and see what happens.
Sincerely,
Joe Lynch, N6CL

    On Friday, December 1, 2017 3:44 PM, Peter Drexel via Elecraft <[hidden email]> wrote:
 

 It seems that, when the fan starts on my K3, a series of vertical lines appears on the WSJT Wide Graph.  Every 60Hz would be kind of obvious.  What's causing that?  What can I do about it?  (other than keeping the power low enough - 8 watts or less - to keep the fan from kicking in)

73  de Peter, AE1TK3 # 3701
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[Don Wilhelm]

Peter,

Contact Elecraft  support.  I believe they have a Fan filter cap mod.

73,
Don W3FPR

On 12/1/2017 3:42 PM, Peter Drexel via Elecraft wrote:

> It seems that, when the fan starts on my K3, a series of vertical lines appears on the WSJT Wide Graph.  Every 60Hz would be kind of obvious.  What's causing that?  What can I do about it?  (other than keeping the power low enough - 8 watts or less - to keep the fan from kicking in)
>
> 73  de Peter, AE1TK3 # 3701
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]
>

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[Jim Brown-10]

On 12/3/2017 6:15 AM, Peter Drexel via Elecraft wrote:
> The mike is disconnected.

If the noise is the noise is like what you hear in the room and the
computer is a laptop, could be the computer's built-in mic. :) Check
Windows settings.

73, Jim K9YC

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