I've owned a KPA1500 for 13 months now, and am very pleased. After being a
ham for 59 years, I've used several both tube and solid state amps. Today
in my shack, I have 3 amplifiers, and all three are solid state/LDMOS
units, including a Palstar and a Flex. The KPA1500 is hands down my
I have a KPA1500 . One of the first ones built, ran perfectly until earlier
this year, when without reason it went from 1400 watts to 700 watts while
running CW, NO WARNING. The LDMOS DIED.. Returned to the factory for
repair, cost me $718 plus my shipping costs. After about 12 weeks I
received
ade a return trip
> for LDMOS failure. Also had my RF-Kit blow up twice. Will have to fix my
> old Henry 3k!
>
> Frank W2YK
>
> -Original Message-
> From: Wes
> Sent: Oct 31, 2022 6:02 PM
> To:
> Subject: Re: [Elecraft] KPA1500 RELIABILITY
>
> In my mo
Of the 5 people I know with the KPA1500, 3 of them have made a return trip for
LDMOS failure. Also had my RF-Kit blow up twice. Will have to fix my old
Henry 3k!
Frank W2YK
-Original Message-
From: Wes
Sent: Oct 31, 2022 6:02 PM
To:
Subject: Re: [Elecraft] KPA1500 RELIABILITY
In my modest station (120V 20A) I run a KPA500, which has been fine, if noisy.
If I was to QRO I think I would opt for tubes. Less expensive, more reliable,
better linearity and quieter.
Wes N7WS
ps. Thanks for the J68HQ Qs
On 10/31/2022 1:40 PM, Dr. William J. Schmidt wrote:
---
Hi William,
Is the station using this amplifier operated in person, or remotely? If
remotely, what operating conditions are being monitored by the remote
operator? What "traps" are provided by the control circuitry to prevent
an operator from doing something dumb? This is one of the things I
@mailman.qth.net
Subject: Re: [Elecraft] KPA1500 RELIABILITY
Is there a common component failure with this KPA1500 amp or does something
different break every time? Is there a certain mode, power level or type of
antenna/feedline that causes failures? I also monitor the SPE Expert list
and some people
On 10/29/2022 5:00 PM, W3AB/GEO wrote:
Is there a reliability issue with these amps?
Mine's been running with no issues since late June 2019. I use it
extensively with legal limit CW, SSB, and RTTY contesting on HF and
160M, as well as seriously chasing grids on 6M using WSJT modes, where I
>
> 73,
> Mark, WB9CIF
>
> -Original Message-
> From: elecraft-boun...@mailman.qth.net
> On Behalf Of W3AB/GEO
> Sent: Sunday, October 30, 2022 00:01
> To: elecraft@mailman.qth.net
> Subject: Re: [Elecraft] KPA1500 RELIABILITY
>
> I don't have one but I
Is there a common component failure with this KPA1500 amp or does something
different break every time? Is there a certain mode, power level or type of
antenna/feedline that causes failures? I also monitor the SPE Expert list
and some people have multiple LDMOS failures while others have no
to
something it didn't like.
73,
Mark, WB9CIF
-Original Message-
From: elecraft-boun...@mailman.qth.net On
Behalf Of W3AB/GEO
Sent: Sunday, October 30, 2022 00:01
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] KPA1500 RELIABILITY
I don't have one but I do have access to one
I don't have one but I do have access to one. It is making UPS rich
going back and forth. Is there a reliability issue with these amps?
---
73 de W3AB/GEO
AFA9GB
WA2LSI, KE6RJW, W7B, AAR9AG
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