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KX3 power supply

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hhoyt

KX3 power supply

John,

I do have a horse in this race (the Kx33), but I will tell you that in
testing many supplies I have seen that many of them have poor
regulation. Some show as much as 25% peak over-voltage which you would
need a scope to see when a load is removed, which is the situation when
the KX3 returns to receive after a full-power transmit cycle. Running
15.4V average could potentially mean 19.25V peak with such a supply.

This reason plus many others is why we designed the Kx33. We like our KX3s!

Cheers & 73,

Howie - WA4PSC
www.proaudioeng.com

>>I would hate to hurt my KX3 with over voltage??
>>anyone know if there would be any short or long
>>term problems with running 15.4 volts to the KX3?
>>It is just slightly above the maximum recommended
>> supply voltage
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Matt Murphy

Re: KX3 power supply

I bought one of the pro audio engineering KX3 power supplies and it works
perfectly.

73,
Matt NQ6N

On Mon, Jan 18, 2016 at 1:31 PM, Howard Hoyt <[hidden email]> wrote:

> John,
>
> I do have a horse in this race (the Kx33), but I will tell you that in
> testing many supplies I have seen that many of them have poor regulation.
> Some show as much as 25% peak over-voltage which you would need a scope to
> see when a load is removed, which is the situation when the KX3 returns to
> receive after a full-power transmit cycle. Running 15.4V average could
> potentially mean 19.25V peak with such a supply.
>
> This reason plus many others is why we designed the Kx33. We like our
> KX3s!
>
> Cheers & 73,
>
> Howie - WA4PSC
> www.proaudioeng.com
>
>
> >>I would hate to hurt my KX3 with over voltage??
> >>anyone know if there would be any short or long
> >>term problems with running 15.4 volts to the KX3?
> >>It is just slightly above the maximum recommended
> >> supply voltage
> ______________________________________________________________
> 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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ae5ka

Re: KX3 power supply

The PAE power supply works fine, but it still puts out enough hash that I
can't use my loop antenna near it. It is better than others? Probably, but
still not usable for me when near the receiving antenna.

Chip
AE5KA

On Mon, Jan 18, 2016 at 5:38 PM, Matt Murphy <[hidden email]> wrote:

> I bought one of the pro audio engineering KX3 power supplies and it works
> perfectly.
>
> 73,
> Matt NQ6N
>
> On Mon, Jan 18, 2016 at 1:31 PM, Howard Hoyt <[hidden email]> wrote:
>
> > John,
> >
> > I do have a horse in this race (the Kx33), but I will tell you that in
> > testing many supplies I have seen that many of them have poor regulation.
> > Some show as much as 25% peak over-voltage which you would need a scope
> to
> > see when a load is removed, which is the situation when the KX3 returns
> to
> > receive after a full-power transmit cycle. Running 15.4V average could
> > potentially mean 19.25V peak with such a supply.
> >
> > This reason plus many others is why we designed the Kx33. We like our
> > KX3s!
> >
> > Cheers & 73,
> >
> > Howie - WA4PSC
> > www.proaudioeng.com
> >
> >
> > >>I would hate to hurt my KX3 with over voltage??
> > >>anyone know if there would be any short or long
> > >>term problems with running 15.4 volts to the KX3?
> > >>It is just slightly above the maximum recommended
> > >> supply voltage
> > ______________________________________________________________
> > 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]
> >
> ______________________________________________________________
> 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]
>