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KPA500 with WSJT digital modes

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Stewart

KPA500 with WSJT digital modes

I am considering using a KPA500 on 6 meter meteor scatter. The MSK144
digital mode uses 100% duty cycle for 15 seconds and off for 15 seconds.
Can anyone share their experience using this amp in this mode? Is the
KPA500 up to the task at full 500 watts output on six meters?

Thanks & HNY

Stew ke4yh

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Jim Rhodes-2

Re: KPA500 with WSJT digital modes

Use mine for RTTY contesting, little longer transmit and receive times. At
times the fan speed kicks up so keep an eye on the temp, but other than
that I would just try it and see. If it gets too hot it will fault off.

On Jan 2, 2017 10:43, "Stew" <[hidden email]> wrote:

> I am considering using a KPA500 on 6 meter meteor scatter. The MSK144
> digital mode uses 100% duty cycle for 15 seconds and off for 15 seconds.
> Can anyone share their experience using this amp in this mode? Is the
> KPA500 up to the task at full 500 watts output on six meters?
>
> Thanks & HNY
>
> Stew ke4yh
>
>
> ______________________________________________________________
> 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
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>

Jim AB3CV

Re: KPA500 with WSJT digital modes

In reply to this post by Stewart

I've used mine for JT65a 6m EME which transmits full power for 50 seconds
with no problems at all.

jim

On Mon, Jan 2, 2017 at 11:42 AM, Stew <[hidden email]> wrote:

Jim Brown-10

Re: KPA500 with WSJT digital modes

In reply to this post by Stewart

On Mon,1/2/2017 8:42 AM, Stew wrote:
> Is the KPA500 up to the task at full 500 watts output on six meters?

Yes, sort of. According to the published spec for duty cycle, it is.
I've use mine that way a lot for FSK441, JT65, and ISCAT, and it worked
fine. But I managed to fry something running JT65 for a while in a VHF
contest, and it was NOT repaired under warranty. I feel that it should
have been.

73, Jim K9YC

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Josh Fiden

Re: KPA500 with WSJT digital modes

In reply to this post by Jim AB3CV

Successfully? What antenna? Your call?

73
Josh W6XU

Sent from my mobile device

> On Jan 2, 2017, at 10:01 AM, Jim Miller <[hidden email]> wrote:
>
> I've used mine for JT65a 6m EME which transmits full power for 50 seconds
> with no problems at all.
>
> jim
>
>> On Mon, Jan 2, 2017 at 11:42 AM, Stew <[hidden email]> wrote:
>>
>> I am considering using a KPA500 on 6 meter meteor scatter. The MSK144
>> digital mode uses 100% duty cycle for 15 seconds and off for 15 seconds.
>> Can anyone share their experience using this amp in this mode? Is the
>> KPA500 up to the task at full 500 watts output on six meters?
>>
>> Thanks & HNY
>>
>> Stew ke4yh
>>
>>
>> ______________________________________________________________
>> 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]

Jim Miller

Re: KPA500 with WSJT digital modes

Completed with a JR6.

6M7. AZ only

Obviously he was doing the heavy lifting.

Jim ab3cv

On Jan 2, 2017, at 1:50 PM, Josh <[hidden email]> wrote:

Successfully? What antenna? Your call?

73
Josh W6XU

Sent from my mobile device

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Cady, Fred-2

Re: KPA500 with WSJT digital modes

In reply to this post by Jim AB3CV

Ditto for FSK ms on 6 m. 4 el yagi.

________________________________
From: Elecraft <[hidden email]> on behalf of Jim Miller <[hidden email]>
Sent: Monday, January 2, 2017 11:01 AM
To: Stew
Cc: Elecraft Reflector
Subject: Re: [Elecraft] KPA500 with WSJT digital modes

I've used mine for JT65a 6m EME which transmits full power for 50 seconds
with no problems at all.

jim

On Mon, Jan 2, 2017 at 11:42 AM, Stew <[hidden email]> wrote:

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Elecraft mailing list

Re: KPA500 with WSJT digital modes

In reply to this post by Jim AB3CV

What frequencies have you been using on 6 meters?

Sent from my iPhone

Jim AB3CV

Re: KPA500 with WSJT digital modes

My EME QSO with JR6EXN was on 50.187 on Dec 21, 2015.

jim ab3cv

On Mon, Jan 2, 2017 at 2:51 PM, Mike Hagele <[hidden email]> wrote:

> What frequencies have you been using on 6 meters?
>
> Sent from my iPhone
>
> > On Jan 2, 2017, at 10:01 AM, Jim Miller <[hidden email]> wrote:
> >
> > I've used mine for JT65a 6m EME which transmits full power for 50 seconds
> > with no problems at all.
> >
> > jim
> >
> >> On Mon, Jan 2, 2017 at 11:42 AM, Stew <[hidden email]> wrote:
> >>
> >> I am considering using a KPA500 on 6 meter meteor scatter. The MSK144
> >> digital mode uses 100% duty cycle for 15 seconds and off for 15 seconds.
> >> Can anyone share their experience using this amp in this mode? Is the
> >> KPA500 up to the task at full 500 watts output on six meters?
> >>
> >> Thanks & HNY
> >>
> >> Stew ke4yh
> >>
> >>
> >> ______________________________________________________________
> >> 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]
>

Josh Fiden

Re: KPA500 with WSJT digital modes

In reply to this post by Elecraft mailing list

6m EME is coordinated online via ON4KST chat page.

http://www.on4kst.com/chat/start.php

73,
Josh W6XU

On 1/2/2017 11:51 AM, Mike Hagele via Elecraft wrote:

Josh Fiden

Re: KPA500 with WSJT digital modes

In reply to this post by Jim Miller

Great, congratulations! And yes, he's running 4x8 array... 500W is
anemic for EME. Your ground gain probably helps a lot.

73,
Josh W6XU

On 1/2/2017 11:00 AM, Jim Miller wrote:
> Completed with a JR6.
>
> 6M7. AZ only
>
> Obviously he was doing the heavy lifting.
>
> Jim ab3cv
>
>

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