Pro Audio Engineerint power Supply

[TerryB]

When I plug in the PAE-Kx33 power supply to my KX3,  I get a huge amount of
hash noise. It's supposed to be low-RFI Anybody with a similar problem?
 Any suggestions?
Thanks
Terry   VE3IQL
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[hhoyt]

Hi Terry,
While it is possible your Kx33 has developed a problem, it is more likely
your antenna system has high common-mode potential which is commutating
through the Kx33 to the AC mains.  We supplied a mix31 ferrite core with
your supply to make a common-mode choke to help with these types of antenna
system issues.  I would be glad to help you, please email our tech support
at: [hidden email]

Cheers & 73,
Howard Hoyt / WA4PSC
www.proaudioeng.com


>>When I plug in the PAE-Kx33 power supply to my KX3,  
>>I get a huge amount of hash noise. It's supposed to be
>>low-RFI Anybody with a similar problem?
>>Any suggestions?
>>Thanks
>>Terry   VE3IQL



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[Jim Brown-10]

Several years ago, Howard sent me one to test. It was very quiet when
only powering my KX3 on receive, which draws only about 150 mA. When I
used it to supply something that drew 4A, it was noisy. So the question
is, are you using it power anything else in addition to the KX3?

A good common mode choke made by winding the right number of turns of
the power cord around the right #31 core should suppress the noise. You
should also make certain that everything in your station is properly
bonded. See http://k9yc.com/GroundingAndAudio.pdf You should also make
certain that if you are using an end-fed wire antenna that you have
provided a suitable counterpoise for it.

73, Jim K9YC

On 9/30/2019 2:44 PM, Terry Basom wrote:
> When I plug in the PAE-Kx33 power supply to my KX3,  I get a huge amount of
> hash noise. It's supposed to be low-RFI Anybody with a similar problem?
>   Any suggestions?


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