[Elecraft] [KX3] Re: KXPA100 SN 707 Total Frustration with this Amp

[John Marvin]

The suggestions to try a dummy load first are right on. Do you have the 
built in ATU, or just the KXPA 100? If you have the ATU I would try both 
antenna outputs.

If I had to guess what the problem is I would guess that you didn't seat 
the antenna connector from the back panel correctly to the atu board (or 
main board if you don't have the ATU) when you were assembling the amp. 
This is most likely to be the cause if you still get high SWR faults 
when attempting to transmit into a dummy load.

John
AC0ZG

On 3/9/2014 7:07 PM, rldillon at aol.com wrote:
>
> The high SWR happens even when the AL80b or Palstar tuner is not 
> connected. In other words when coax from the kpxa100 goes direct to 
> the K4KIO Hexx beam with nothing in between to confuse the amp except 
> a barrel connector.
> Yes you can drive a larger amp with the kx3 and KXPA100. It is covered 
> on page 19 of the manual in paragraph titled Keying an External 
> Amplifier.
> -----Original Message-----
> From: Dr. William J. Schmidt, II <bill at wjschmidt.com>
> To: rldillon <rldillon at aol.com>; elecraft <elecraft at mailman.qth.net>; 
> KX3 <KX3 at yahoogroups.com>
> Sent: Sun, Mar 9, 2014 8:49 pm
> Subject: RE: [Elecraft] KXPA100 SN 707 Total Frustration with this Amp
>
> Am I reading this correctly?  You are driving an AL80B with the KXPA100
> being driven by the KX3?  That's quite imaginative if that's correct.  The
> SWR fault is coming from the AL80B input circuit not your antenna (the KXPA
> can't see the SWR on the other side of the AL80B).  probably something bad
> in the input circuit of the AL80B causing the high SWR...
>
>
> Dr. William J. Schmidt - K9HZ / J68HZ/ 8P6HK/ ZF2HZ
>   
> Owner - Operator
> Big Signal Ranch
> Staunton, Illinois
>   
> email:bill at wjschmidt.com  <mailto:bill at wjschmidt.com>
>
> __._,_.___
> Reply via web post 
> <https://groups.yahoo.com/group/KX3/post;_ylc=X3oDMTJyZWFlY2gyBF9TAzk3MzU5NzE0BGdycElkAzc0NTIwOTQ3BGdycHNwSWQDMTcwNTA2MzEwOARtc2dJZAM0MTMzMwRzZWMDZnRyBHNsawNycGx5BHN0aW1lAzEzOTQ0MTY5OTU-?act=reply&messageNum=41333> 
> 	Reply to sender 
> <mailto:rldillon at aol.com?subject=Re%3A%20%5BElecraft%5D%20KXPA100%20SN%20707%20Total%20Frustration%20with%20this%20Amp> 
> 	Reply to group 
> <mailto:KX3 at yahoogroups.com?subject=Re%3A%20%5BElecraft%5D%20KXPA100%20SN%20707%20Total%20Frustration%20with%20this%20Amp> 
> 	Start a New Topic 
> <https://groups.yahoo.com/group/KX3/post;_ylc=X3oDMTJmZWFsYWp1BF9TAzk3MzU5NzE0BGdycElkAzc0NTIwOTQ3BGdycHNwSWQDMTcwNTA2MzEwOARzZWMDZnRyBHNsawNudHBjBHN0aW1lAzEzOTQ0MTY5OTU-> 
> 	Messages in this topic 
> <https://groups.yahoo.com/group/KX3/message/41333;_ylc=X3oDMTM3cTRyNnBvBF9TAzk3MzU5NzE0BGdycElkAzc0NTIwOTQ3BGdycHNwSWQDMTcwNTA2MzEwOARtc2dJZAM0MTMzMwRzZWMDZnRyBHNsawN2dHBjBHN0aW1lAzEzOTQ0MTY5OTUEdHBjSWQDNDEzMzM-> 
> (1)
>
> Visit Your Group 
> <https://groups.yahoo.com/group/KX3;_ylc=X3oDMTJmNGJyNDM5BF9TAzk3MzU5NzE0BGdycElkAzc0NTIwOTQ3BGdycHNwSWQDMTcwNTA2MzEwOARzZWMDdnRsBHNsawN2Z2hwBHN0aW1lAzEzOTQ0MTY5OTU-> 
>
>
>   * New Members
>     <https://groups.yahoo.com/group/KX3/members;_ylc=X3oDMTJnMWhqNGZwBF9TAzk3MzU5NzE0BGdycElkAzc0NTIwOTQ3BGdycHNwSWQDMTcwNTA2MzEwOARzZWMDdnRsBHNsawN2bWJycwRzdGltZQMxMzk0NDE2OTk1?o=6>
>     13
>
> Yahoo! Groups 
> <https://groups.yahoo.com/;_ylc=X3oDMTJlbzliOXRrBF9TAzk3NDc2NTkwBGdycElkAzc0NTIwOTQ3BGdycHNwSWQDMTcwNTA2MzEwOARzZWMDZnRyBHNsawNnZnAEc3RpbWUDMTM5NDQxNjk5NQ--> 
>
> . Privacy 
> <https://info.yahoo.com/privacy/us/yahoo/groups/details.html> . 
> Unsubscribe 
> <mailto:KX3-unsubscribe at yahoogroups.com?subject=Unsubscribe> . Terms 
> of Use <https://info.yahoo.com/legal/us/yahoo/utos/terms/>
> .
>
> __,_._,___