[Elecraft] Echo when transmitting

[Tony McClenny]

Thanks to everyone, who offered a suggestion.  David's thought appears to be
the issue.

It seems you have pointed me in the correct direction - thank you.
Disconnected K3 input to computer soundcard and the SSB noise / echo
disappeared - now to fine tune.  Thank you.

- Tony, N3ME -

118 Ashwood Street
Bethany Beach, DE 19930-9699
(302) 539-5638
Grid:  FM28lm

http://www.n3me.net
Elecraft K3 # 2462
PVRC Member


-----Original Message-----
From: elecraft-bounces at mailman.qth.net
[mailto:elecraft-bounces at mailman.qth.net] On Behalf Of david Moes
Sent: Saturday, March 16, 2013 20:08 PM
To: elecraft at mailman.qth.net
Subject: Re: [Elecraft] Echo when transmitting

I  had a similar problem some time ago.    had me baffled for a while

If your computer is connected to line in and out try disconnecting 
them.   If  the problem disappears then check that the sound card used 
for the K3 audio by opening recording devices, then select the device 
you are using for the K3  and click properties.  Under the Listen tab be 
sure that the box for "listen to this device" is not selected.

If it is it can create feed back that has some delays from both the K3 
(if monitor Normal)  and latency withing the sound card itself to create 
this kind of echo.   drove me nuts trying to figure it out.

also  I find I need to keep the monitor level down when using the 
headset, Yamaha CM500 here,  otherwise there is some audio feedback



  On 3/16/2013 15:52, Tony McClenny wrote:
> Ideas to correct the following would be appreciated - thank you in
advance.
> This is something new and I am perplexed.
>
>   
>
> I am using a Heil Pro-Set Plus microphone/headphones (with elements HC4 &
> HC5).  The microphone line is connected to rear of K3 in the "Mono" jack.
> The Heil headphone 1/8" stereo plug is connected on rear of K3 to "Phones"
> jack.  The footswitch is connected to rear of K3 "PTT In".
>
>   
>
> When in VOX the K3 stays in transmit and sounds like echo of shots (my
> imaginary sound) - when in PTT (preferred mode), as soon as I press the
> footswitch to transmit, K3 TX light turns red, headphones outputs a series
> of sound of echoes even before I say anything and if I speak my voice
> echoes...
>
>   
>
> Mic Select                            FP.L     with Bias set to Off
>
> Mic + Lin                                 On
>
> Mic Gain                                 20
>
> Comp                                       12
>
>
> VOX Gain                               050
>
> VOX Delay                             0.50
>
>   
>
> AF Gain                                  High
>
>   
>
> SPKRS                                     2
>
> SPKR+PH                                Yes
>
>   
>
> - Tony, N3ME -
>
>
> 118 Ashwood Street
> Bethany Beach, DE 19930-9699
> (302) 539-5638
>
> Grid:  FM28lm
>
>   <http://www.n3me.net> http://www.n3me.net
> Elecraft K3 # 2462
>
> PVRC Member
>
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