> When rig B TX, depending on band, it gets into K3 TX audio.
Use standard audio decoupling techniques ... use separate power
supplies for each transceiver and the microKEYER. Do not use
Mic + Line with the K3, make sure that any external power supply
does not tie V- to chassis (and/or third pin on the power cable),
add decoupling (common mode) chokes to the power supply cables,
use common mode chokes on all antenna cables and don't transmit
on both radios at the same time.
73,
... Joe, W4TV
On 9/11/2010 9:37 AM, Felipe Ceglia wrote:
> Hi Jim
>
> Here is the setup:
>
> rig A:
> K3
> heil proset on front panel
> pc audio on rear plugs
> cat plugged via microham microkeyer
> nothing plugged on cw key jack (that minimized rfi a bit, it was
> coming from microkeyer)
> JRC 1kw amp
>
> rig B
> ft2000
> cat cable to pc
> icom pw1 amp
>
> The antennas are all near the shack.
>
> When rig B TX, depending on band, it gets into K3 TX audio.
>
>
> 2010/9/11 Jim Brown<j...@audiosystemsgroup.com>:
>> On Fri, 10 Sep 2010 21:35:49 -0300, Felipe Ceglia wrote:
>>
>>> When second rig is TX on 80m, I get the whole audio being coupled by the K3.
>>
>> Please give more detail about your problem. Are both radios transmitting at
>> the same time? Both K3s, or one a different radio? Is there a computer
>> feeding either radio? Where do you hear the RFI? Where do the radios get
>> their DC power? Exactly. What kind of power supply? Is the V- terminal
>> bonded to the chassis at the power supply?
>>
>>> Is this a common issue?
>>
>> It depends on the details of your problem.
>>
>>> Any tips to solve?
>>
>> It depends on the details of your problem. :) Once we hear more details, we
>> can give some ideas.
>>
>> 73, Jim K9YC
>>
>>
>>
>>
>>
>>
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>
>
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