Elecraft › [QRO]

KPA500 was working now it’s not

Classic

List

Threaded

4 messages Options

vtnn43e

KPA500 was working now it’s not

Powered up my KPA500 today for the first time today and it was working ok with my Flex-5000. Got 500 watts out on 40 to a dummy load and everything seemed ok. Powered the rig and amp off then on and all of a sudden get only 35 watts out for 35 in. Does not matter what band I Put my rig on as I only get out what I put in. Don’t see any errors and the amp is in OPER. There are no faults BTW.

Anyone have any thoughts as to why I no longer get any output from the amp?

Zack

N8FNR
______________________________________________________________
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 Wolbert, K6XX

Re: KPA500 was working now it's not

You aren't getting the KEY IN signal so the amp thinks it is in receive
mode. Is the asterisk in the display?

73 de Bob, K6XX

> -----Original Message-----
> From: [hidden email]
> [mailto:[hidden email]] On Behalf Of
> [hidden email]
> Sent: Tuesday, December 27, 2011 7:34 PM
> To: Elecraft List
> Subject: [Elecraft] KPA500 was working now it's not
>
>
>
>
> Powered up my KPA500 today for the first time today and it
> was working ok with my Flex-5000. Got 500 watts out on 40 to
> a dummy load and everything seemed ok. Powered the rig and
> amp off then on and all of a sudden get only 35 watts out for
> 35 in. Does not matter what band I Put my rig on as I only
> get out what I put in. Don't see any errors and the amp is in
> OPER. There are no faults BTW.
>
> Anyone have any thoughts as to why I no longer get any output
> from the amp?
>
> Zack
>
> N8FNR
> ______________________________________________________________
> 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

Eric Swartz - WA6HHQ

Re: KPA500 was working now it’s not

Administrator

In reply to this post by vtnn43e

Check your PTT cable.

73, Eric

www.elecraft.com

On 12/27/2011 7:33 PM, [hidden email] wrote:

>
>
> Powered up my KPA500 today for the first time today and it was working ok with my Flex-5000. Got 500 watts out on 40 to a dummy load and everything seemed ok. Powered the rig and amp off then on and all of a sudden get only 35 watts out for 35 in. Does not matter what band I Put my rig on as I only get out what I put in. Don’t see any errors and the amp is in OPER. There are no faults BTW.
>
> Anyone have any thoughts as to why I no longer get any output from the amp?
>
> Zack
>
> N8FNR
> ______________________________________________________________
> 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

k2zf50

Re: KPA500 was working now it’s not

In reply to this post by vtnn43e

Ron,
Check your keying line from the Flex-5000 to the KPA-500. If the PTT line is not connected I would expect to see the problem your experiencing,
Jim K2ZF

-----Original Message-----
From: Ron D'Eau Claire <[hidden email]>
To: vtnn43e <[hidden email]>; 'Elecraft List' <[hidden email]>
Sent: Tue, Dec 27, 2011 6:10 pm
Subject: Re: [Elecraft] KPA500 was working now it’s not

Zack, what does the display indicate when you tap HV?

Ron AC7AC

-----Original Message-----
From: [hidden email] [mailto:[hidden email]]
On Behalf Of [hidden email]
Sent: Tuesday, December 27, 2011 7:34 PM
To: Elecraft List
Subject: [Elecraft] KPA500 was working now it’s not

Powered up my KPA500 today for the first time today and it was working ok with
my Flex-5000. Got 500 watts out on 40 to a dummy load and everything seemed ok.
Powered the rig and amp off then on and all of a sudden get only 35 watts out
for 35 in. Does not matter what band I Put my rig on as I only get out what I
put in. Don’t see any errors and the amp is in OPER. There are no faults BTW.

Anyone have any thoughts as to why I no longer get any output from the amp?

Zack

N8FNR

______________________________________________________________
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