Elecraft

KXPA100 ATU Issue

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Ozy

KXPA100 ATU Issue

My KX3 and KXPA100 has been off for about 1 month due to Life getting in the way. Today I turned it back on, checked available firmware and updated my KX3 to the current FW and my KXPA100 to the 1.09 beta. When trying to use the amp ATU.X, nothing happens. The SWR light flashes continuously after the attempt and the unit makes no ATU sounds. If I turn off the amp via PA-OFF, and try the internal KX3 tuner, it is working fine. I then reverted the KXPA100 back to non-beta 1.04 with the same results. The utility connects and can see status.

If I tune to a band that does not need a tuner, such as 20M on my windom, and hold XMIT to send a carrier, as long as I am under 10W using the KX3, power is being output. When I go above 10W, the output is as shown:

https://www.flickr.com/photos/ozy311/12624894153/

My fault table also looks very odd. No way my power was that high, but that may be from v1.0 firmware. And my SWR and voltage never dropped that low, unless it faults that when power is removed and the supply drains.

https://www.flickr.com/photos/ozy311/12625150863/in/photostream/

I really hope nothing is wrong. I need to use it Thurs-Sunday at our camping event. :(

Please help!

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Ozy

Re: KXPA100 ATU Issue

No, I verified that in the utility and the KX3 that ATU.X shows MANual as expected.

On Feb 18, 2014, at 7:24 PM, Bill Blomgren (kk4qdz) <[hidden email]> wrote:

> Now THAT is strange - Did the setting for the PA change to not present perhaps?
>
> If you hit tune on 20 meters, does it drop almost instantly to 1:1?
>
>
>
> KK4QDZ - Now with Extra Class Priv's, and a tiny KX3 to enjoy them!
>
> From: Chris Johnson <[hidden email]>
> To: "[hidden email]" <[hidden email]>
> Sent: Tuesday, February 18, 2014 9:17 PM
> Subject: [Elecraft] KXPA100 ATU Issue
>
> My KX3 and KXPA100 has been off for about 1 month due to Life getting in the way. Today I turned it back on, checked available firmware and updated my KX3 to the current FW and my KXPA100 to the 1.09 beta. When trying to use the amp ATU.X, nothing happens. The SWR light flashes continuously after the attempt and the unit makes no ATU sounds. If I turn off the amp via PA-OFF, and try the internal KX3 tuner, it is working fine. I then reverted the KXPA100 back to non-beta 1.04 with the same results. The utility connects and can see status.
>
> If I tune to a band that does not need a tuner, such as 20M on my windom, and hold XMIT to send a carrier, as long as I am under 10W using the KX3, power is being output. When I go above 10W, the output is as shown:
>
> https://www.flickr.com/photos/ozy311/12624894153/
>
> My fault table also looks very odd. No way my power was that high, but that may be from v1.0 firmware. And my SWR and voltage never dropped that low, unless it faults that when power is removed and the supply drains.
>
> https://www.flickr.com/photos/ozy311/12625150863/in/photostream/
>
> I really hope nothing is wrong. I need to use it Thurs-Sunday at our camping event. :(
>
> Please help!
>
>
> ______________________________________________________________
> 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
>
>

______________________________________________________________
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

Ozy

Re: KXPA100 ATU Issue

Power output is 5W, SWR is 1.5:1, and the SWR light on the KXPA100 flashes. I have to power cycle the amp to get the SWR light to stop flashing. SWR meter on KXPA100 shows the same SWR that the KX3 shows.

On Feb 18, 2014, at 7:29 PM, Bill Blomgren (kk4qdz) <[hidden email]> wrote:

> what happens if you hit tune on 20?
>
> KK4QDZ - Now with Extra Class Priv's, and a tiny KX3 to enjoy them!
>
> From: Chris Johnson <[hidden email]>
> To: Bill Blomgren (kk4qdz) <[hidden email]>; "[hidden email]" <[hidden email]>
> Sent: Tuesday, February 18, 2014 9:26 PM
> Subject: Re: [Elecraft] KXPA100 ATU Issue
>
> No, I verified that in the utility and the KX3 that ATU.X shows MANual as expected.
>
> On Feb 18, 2014, at 7:24 PM, Bill Blomgren (kk4qdz) <[hidden email]> wrote:
>
>> Now THAT is strange - Did the setting for the PA change to not present perhaps?
>>
>> If you hit tune on 20 meters, does it drop almost instantly to 1:1?
>>
>>
>>
>> KK4QDZ - Now with Extra Class Priv's, and a tiny KX3 to enjoy them!
>>
>> From: Chris Johnson <[hidden email]>
>> To: "[hidden email]" <[hidden email]>
>> Sent: Tuesday, February 18, 2014 9:17 PM
>> Subject: [Elecraft] KXPA100 ATU Issue
>>
>> My KX3 and KXPA100 has been off for about 1 month due to Life getting in the way. Today I turned it back on, checked available firmware and updated my KX3 to the current FW and my KXPA100 to the 1.09 beta. When trying to use the amp ATU.X, nothing happens. The SWR light flashes continuously after the attempt and the unit makes no ATU sounds. If I turn off the amp via PA-OFF, and try the internal KX3 tuner, it is working fine. I then reverted the KXPA100 back to non-beta 1.04 with the same results. The utility connects and can see status.
>>
>> If I tune to a band that does not need a tuner, such as 20M on my windom, and hold XMIT to send a carrier, as long as I am under 10W using the KX3, power is being output. When I go above 10W, the output is as shown:
>>
>> https://www.flickr.com/photos/ozy311/12624894153/
>>
>> My fault table also looks very odd. No way my power was that high, but that may be from v1.0 firmware. And my SWR and voltage never dropped that low, unless it faults that when power is removed and the supply drains.
>>
>> https://www.flickr.com/photos/ozy311/12625150863/in/photostream/
>>
>> I really hope nothing is wrong. I need to use it Thurs-Sunday at our camping event. :(
>>
>> Please help!
>>
>>
>> ______________________________________________________________
>> 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
>>
>>
>
>
>

Bob N3MNT

Re: KXPA100 ATU Issue

Try unplugging and reinserting the KX3/KXPA100 interface cable., I seem to remember someone else having this problem and it was a bad connection at the radio end.