[Elecraft] KPA500 troubles

[Charlie T, K3ICH]

That seems like a helluva lot to fix the bandpass
filter for a band that you never used.

Very UN-Elecraft sounding to me.

73, Charlie k3ICH



-----Original Message-----
From: Elecraft
[mailto:elecraft-bounces at mailman.qth.net] On
Behalf Of w4grj
Sent: Thursday, November 12, 2015 7:14 AM
To: elecraft at mailman.qth.net
Subject: Re: [Elecraft] KPA500 troubles

I need to correct the information on the repair
cost

It was $615 with shipping not $650 as I previously
reported.

 

Jack W4GRJ

 

 


On Thursday, November 12, 2015, W4GRJ
<w4grj at satterfield.org> wrote:

Since I have never operated on 60m ever... You
figure it out Jack W4GRJ

On Nov 11, 2015, at 3:33 PM, Jim Brown-10 [via
Elecraft]
<ml-node+s365791n7610243h47 at n2.nabble.com
<javascript:;> > wrote:

On Wed,11/11/2015 12:10 PM, W4GRJ wrote:
> Got the KPA500 back from Elecraft.
> Problem found: L22 and other components in the
60M low pass filter 
> circuit burnt through the LPF PCB.

60M LPF??? Last I looked, the US power limit on
60M is 100W relative to a half wave dipole.



> Repair $650 later: Replaced low pass filter
module and installed QSK mod.
>
> On the phone I asked what caused the failure,
answer was no idea other 
> than component failure. I understand stuff fails
but I thought I would get more than 2 years before
a major expensive failure.

The LPF is on the output of the amplifier. One
possible cause of failure could be lightning.

> Previously had a Ameritron ALS-600 for 5+ years
never a problem, sold 
> it to purchase the KPA500.
>
> Sometimes the grass is not greener.

My only experience with an ALS-600 was at a
contest station in PJ4 several years ago. I found
it to be a really inferior amp - most of the time,
I was lucky to get 300W out if it. No comparison
to a KPA500.

73, Jim K9YC


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