KXPA100 for sale

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KXPA100 for sale

John Zaruba Jr
Factory assembled KXPA100 with internal antenna tuner, includes KXPACBL (KX3 interface cable). Purchased new 9/2019. Just don’t use it very much and would rather have a new mountain bike to transport my KX3 to Parks On The Air (POTA) when things open back up. $1100 plus shipping to your QTH, PayPal and Zelle only for funds transfer.

73,

John K2ZA


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Re: KXPA100 for sale

kd4iz
Sent you a personal email about this. Definitely interested.
Jack - KD4IZ

-----Original Message-----
From: [hidden email] <[hidden email]> On Behalf Of John Zaruba Jr
Sent: Thursday, May 7, 2020 23:50
To: [hidden email]
Subject: [Elecraft] KXPA100 for sale

Factory assembled KXPA100 with internal antenna tuner, includes KXPACBL (KX3 interface cable). Purchased new 9/2019. Just don’t use it very much and would rather have a new mountain bike to transport my KX3 to Parks On The Air (POTA) when things open back up. $1100 plus shipping to your QTH, PayPal and Zelle only for funds transfer.

73,

John K2ZA


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Re: KXPA100 for sale

John Zaruba Jr
In reply to this post by John Zaruba Jr
The amp has been spoken for.

73,

John K2ZA

Sent from my iPhone
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KPA1500 and noise

Ronnie Hull
Recently I have noticed that I have a very high noise lever at my QTH, which
I have never had.  Today as I was shutting down my station I turned off the
KPA1500 first, and my noise dropped from S7 to S1 instantly.

I turned the Amp back on and the noise came back.  Have any of you ever
observed this?

Thanks in advance

Ronnie W5SUM

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Re: KPA1500 and noise

Dave wo2x
Need more details on what your antenna system is and especially what is
connected to antenna 1 and 2 on the amp.
Any antenna switches, etc.

Dave wo2x



-----Original Message-----
From: [hidden email] <[hidden email]> On
Behalf Of [hidden email]
Sent: Friday, May 8, 2020 8:28 PM
To: [hidden email]
Subject: [Elecraft] KPA1500 and noise

Recently I have noticed that I have a very high noise lever at my QTH, which
I have never had.  Today as I was shutting down my station I turned off the
KPA1500 first, and my noise dropped from S7 to S1 instantly.

I turned the Amp back on and the noise came back.  Have any of you ever
observed this?

Thanks in advance

Ronnie W5SUM

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Re: KPA1500 and noise

Ronnie Hull
only one antenna hooked to it, and that’s a sommer XP808 log fed yagi.  No
switches.!

Ronnie W5SUM

-----Original Message-----
From: [hidden email]
Sent: Friday, May 08, 2020 7:35 PM
To: [hidden email] ; [hidden email]
Subject: RE: [Elecraft] KPA1500 and noise

Need more details on what your antenna system is and especially what is
connected to antenna 1 and 2 on the amp.
Any antenna switches, etc.

Dave wo2x



-----Original Message-----
From: [hidden email] <[hidden email]> On
Behalf Of [hidden email]
Sent: Friday, May 8, 2020 8:28 PM
To: [hidden email]
Subject: [Elecraft] KPA1500 and noise

Recently I have noticed that I have a very high noise lever at my QTH, which
I have never had.  Today as I was shutting down my station I turned off the
KPA1500 first, and my noise dropped from S7 to S1 instantly.

I turned the Amp back on and the noise came back.  Have any of you ever
observed this?

Thanks in advance

Ronnie W5SUM

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Re: KPA1500 and noise

Barry Simpson
In reply to this post by Ronnie Hull
Hi Ronnie

I do not have a KPA1500 (only a KPA500) but I recall seeing posts from time
to time about noise emanating from KPA1500's.

I think you will need to check in with Elecraft on the issue.

73

Barry  VK2BJ

On Sat, 9 May 2020 at 10:28, <[hidden email]> wrote:

> Recently I have noticed that I have a very high noise lever at my QTH,
> which
> I have never had.  Today as I was shutting down my station I turned off
> the
> KPA1500 first, and my noise dropped from S7 to S1 instantly.
>
> I turned the Amp back on and the noise came back.  Have any of you ever
> observed this?
>
> Thanks in advance
>
> Ronnie W5SUM
>
> ______________________________________________________________
> 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
> Message delivered to [hidden email]
>
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Re: KPA1500 and noise

Peter Hall
In reply to this post by Ronnie Hull
I don't recall the details but have you read the posts by the Elecraft guys some weeks ago related to excess noise and loose grounding nuts (on or near the SO239 connectors if I recall correctly)?

My KPA1500 creates a tiny amount of additional noise on 6 m when switched to "operate" but nothing discernible elsewhere.

73, Peter.

-----Original Message-----
From: [hidden email] <[hidden email]> On Behalf Of [hidden email]
Sent: Saturday, 9 May 2020 8:41 AM
To: [hidden email]; [hidden email]
Subject: Re: [Elecraft] KPA1500 and noise

only one antenna hooked to it, and that’s a sommer XP808 log fed yagi.  No switches.!

Ronnie W5SUM

-----Original Message-----
From: [hidden email]
Sent: Friday, May 08, 2020 7:35 PM
To: [hidden email] ; [hidden email]
Subject: RE: [Elecraft] KPA1500 and noise

Need more details on what your antenna system is and especially what is connected to antenna 1 and 2 on the amp.
Any antenna switches, etc.

Dave wo2x



-----Original Message-----
From: [hidden email] <[hidden email]> On Behalf Of [hidden email]
Sent: Friday, May 8, 2020 8:28 PM
To: [hidden email]
Subject: [Elecraft] KPA1500 and noise

Recently I have noticed that I have a very high noise lever at my QTH, which I have never had.  Today as I was shutting down my station I turned off the
KPA1500 first, and my noise dropped from S7 to S1 instantly.

I turned the Amp back on and the noise came back.  Have any of you ever observed this?

Thanks in advance

Ronnie W5SUM

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Re: KPA1500 and noise

Dave wo2x
Mine had noise on 80 meters. Elecraft sent me a load resistor to install in the power supply across the 50 VDC terminals. Knocked the birdies down to the noise floor. I also foo d there is a connection from the minus terminal to the chassis that was loose.

Serial number 423 and it has been working fine since.

Dave wo2x

Sent from my waxed string and tin cans.

> On May 8, 2020, at 10:33 PM, Peter Hall <[hidden email]> wrote:
>
> I don't recall the details but have you read the posts by the Elecraft guys some weeks ago related to excess noise and loose grounding nuts (on or near the SO239 connectors if I recall correctly)?
>
> My KPA1500 creates a tiny amount of additional noise on 6 m when switched to "operate" but nothing discernible elsewhere.
>
> 73, Peter.
>
> -----Original Message-----
> From: [hidden email] <[hidden email]> On Behalf Of [hidden email]
> Sent: Saturday, 9 May 2020 8:41 AM
> To: [hidden email]; [hidden email]
> Subject: Re: [Elecraft] KPA1500 and noise
>
> only one antenna hooked to it, and that’s a sommer XP808 log fed yagi.  No switches.!
>
> Ronnie W5SUM
>
> -----Original Message-----
> From: [hidden email]
> Sent: Friday, May 08, 2020 7:35 PM
> To: [hidden email] ; [hidden email]
> Subject: RE: [Elecraft] KPA1500 and noise
>
> Need more details on what your antenna system is and especially what is connected to antenna 1 and 2 on the amp.
> Any antenna switches, etc.
>
> Dave wo2x
>
>
>
> -----Original Message-----
> From: [hidden email] <[hidden email]> On Behalf Of [hidden email]
> Sent: Friday, May 8, 2020 8:28 PM
> To: [hidden email]
> Subject: [Elecraft] KPA1500 and noise
>
> Recently I have noticed that I have a very high noise lever at my QTH, which I have never had.  Today as I was shutting down my station I turned off the
> KPA1500 first, and my noise dropped from S7 to S1 instantly.
>
> I turned the Amp back on and the noise came back.  Have any of you ever observed this?
>
> Thanks in advance
>
> Ronnie W5SUM
>
> ______________________________________________________________
> 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 Message delivered to [hidden email]
>
> ______________________________________________________________
> 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 Message delivered to [hidden email]
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
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Re: KPA1500 and noise

Jim Brown-10
In reply to this post by Ronnie Hull
On 5/8/2020 5:28 PM, [hidden email] wrote:
> I turned the Amp back on and the noise came back.

Is your station properly bonded? It should be, for a lot of reasons,
especially noise and safety. It's also the LAW! Study this tutorial.

http://k9yc.com/GroundingAndAudio.pdf

On 5/8/2020 5:41 PM, [hidden email] wrote:
 > only one antenna hooked to it, and that’s a sommer XP808 log fed yagi.

You should have a very good common mode choke at the feedpoint.
Guidelines here. http://k9yc.com/2018Cookbook.pdf

73, Jim K9YC




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Re: KPA1500 and noise

Peter Hall
In reply to this post by Dave wo2x
Folks,

This was the thread I half recalled: excess noise on 10 m.  See reply from Eric re S0239 washers.  May not be applicable to present case (not sure which bands are involved) but worth a check.

http://elecraft.365791.n2.nabble.com/KPA1500-RFI-on-10-Meters-td7657067.html#a7657213

73, Peter.


-----Original Message-----
From: Dave <[hidden email]>
Sent: Saturday, 9 May 2020 10:43 AM
To: Peter Hall <[hidden email]>
Cc: [hidden email]; [hidden email]
Subject: Re: [Elecraft] KPA1500 and noise

Mine had noise on 80 meters. Elecraft sent me a load resistor to install in the power supply across the 50 VDC terminals. Knocked the birdies down to the noise floor. I also foo d there is a connection from the minus terminal to the chassis that was loose.

Serial number 423 and it has been working fine since.

Dave wo2x

Sent from my waxed string and tin cans.

> On May 8, 2020, at 10:33 PM, Peter Hall <[hidden email]> wrote:
>
> I don't recall the details but have you read the posts by the Elecraft guys some weeks ago related to excess noise and loose grounding nuts (on or near the SO239 connectors if I recall correctly)?
>
> My KPA1500 creates a tiny amount of additional noise on 6 m when switched to "operate" but nothing discernible elsewhere.
>
> 73, Peter.
>
> -----Original Message-----
> From: [hidden email]
> <[hidden email]> On Behalf Of [hidden email]
> Sent: Saturday, 9 May 2020 8:41 AM
> To: [hidden email]; [hidden email]
> Subject: Re: [Elecraft] KPA1500 and noise
>
> only one antenna hooked to it, and that’s a sommer XP808 log fed yagi.  No switches.!
>
> Ronnie W5SUM
>
> -----Original Message-----
> From: [hidden email]
> Sent: Friday, May 08, 2020 7:35 PM
> To: [hidden email] ; [hidden email]
> Subject: RE: [Elecraft] KPA1500 and noise
>
> Need more details on what your antenna system is and especially what is connected to antenna 1 and 2 on the amp.
> Any antenna switches, etc.
>
> Dave wo2x
>
>
>
> -----Original Message-----
> From: [hidden email]
> <[hidden email]> On Behalf Of [hidden email]
> Sent: Friday, May 8, 2020 8:28 PM
> To: [hidden email]
> Subject: [Elecraft] KPA1500 and noise
>
> Recently I have noticed that I have a very high noise lever at my QTH,
> which I have never had.  Today as I was shutting down my station I
> turned off the
> KPA1500 first, and my noise dropped from S7 to S1 instantly.
>
> I turned the Amp back on and the noise came back.  Have any of you ever observed this?
>
> Thanks in advance
>
> Ronnie W5SUM
>
> ______________________________________________________________
> 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 Message delivered to
> [hidden email]
>
> ______________________________________________________________
> 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 Message delivered to
> [hidden email]
> ______________________________________________________________
> Elecraft mailing list
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> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
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> list: http://www.qsl.net/donate.html Message delivered to
> [hidden email]
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Re: KPA1500 and noise

Ronnie Hull
Peter thanks 10M IS the band in question! Bonding is good, using 1/2” wide braided copper strAt for K3 and the power supply and kpa1500 are bonded together with the same! All equip is bonded to a 10” X 24” copper plate. That plate has #6 hard drawn copper cadwelded to it, the #6 going through the floor of shack only 36” and is cadwelded to a 8’ copper clad ground rod.
I’ll check the SO239’s today

Thanks all

Ronnie W5Sum

Sent from my iPhone

> On May 9, 2020, at 4:43 AM, Peter Hall <[hidden email]> wrote:
>
> Folks,
>
> This was the thread I half recalled: excess noise on 10 m.  See reply from Eric re S0239 washers.  May not be applicable to present case (not sure which bands are involved) but worth a check.
>
> http://elecraft.365791.n2.nabble.com/KPA1500-RFI-on-10-Meters-td7657067.html#a7657213
>
> 73, Peter.
>
>
> -----Original Message-----
> From: Dave <[hidden email]>
> Sent: Saturday, 9 May 2020 10:43 AM
> To: Peter Hall <[hidden email]>
> Cc: [hidden email]; [hidden email]
> Subject: Re: [Elecraft] KPA1500 and noise
>
> Mine had noise on 80 meters. Elecraft sent me a load resistor to install in the power supply across the 50 VDC terminals. Knocked the birdies down to the noise floor. I also foo d there is a connection from the minus terminal to the chassis that was loose.
>
> Serial number 423 and it has been working fine since.
>
> Dave wo2x
>
> Sent from my waxed string and tin cans.
>
>> On May 8, 2020, at 10:33 PM, Peter Hall <[hidden email]> wrote:
>>
>> I don't recall the details but have you read the posts by the Elecraft guys some weeks ago related to excess noise and loose grounding nuts (on or near the SO239 connectors if I recall correctly)?
>>
>> My KPA1500 creates a tiny amount of additional noise on 6 m when switched to "operate" but nothing discernible elsewhere.
>>
>> 73, Peter.
>>
>> -----Original Message-----
>> From: [hidden email]
>> <[hidden email]> On Behalf Of [hidden email]
>> Sent: Saturday, 9 May 2020 8:41 AM
>> To: [hidden email]; [hidden email]
>> Subject: Re: [Elecraft] KPA1500 and noise
>>
>> only one antenna hooked to it, and that’s a sommer XP808 log fed yagi.  No switches.!
>>
>> Ronnie W5SUM
>>
>> -----Original Message-----
>> From: [hidden email]
>> Sent: Friday, May 08, 2020 7:35 PM
>> To: [hidden email] ; [hidden email]
>> Subject: RE: [Elecraft] KPA1500 and noise
>>
>> Need more details on what your antenna system is and especially what is connected to antenna 1 and 2 on the amp.
>> Any antenna switches, etc.
>>
>> Dave wo2x
>>
>>
>>
>> -----Original Message-----
>> From: [hidden email]
>> <[hidden email]> On Behalf Of [hidden email]
>> Sent: Friday, May 8, 2020 8:28 PM
>> To: [hidden email]
>> Subject: [Elecraft] KPA1500 and noise
>>
>> Recently I have noticed that I have a very high noise lever at my QTH,
>> which I have never had.  Today as I was shutting down my station I
>> turned off the
>> KPA1500 first, and my noise dropped from S7 to S1 instantly.
>>
>> I turned the Amp back on and the noise came back.  Have any of you ever observed this?
>>
>> Thanks in advance
>>
>> Ronnie W5SUM
>>
>> ______________________________________________________________
>> 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 Message delivered to
>> [hidden email]
>>
>> ______________________________________________________________
>> 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 Message delivered to
>> [hidden email]
>> ______________________________________________________________
>> 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 Message delivered to
>> [hidden email]

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KPA1500 and Noise

Edward A. Dauer
In reply to this post by Ronnie Hull
Which of the amp's antenna outputs are you using?  When the KPA1500 is switched off the antenna is internally defaulted to connector number one.  So if the noise is coming in via an antenna connected to number two, it should drop when power to the amp is turned off.

Ted, KN1CBR

------------------------------

Message: 6
Date: Fri, 8 May 2020 19:28:24 -0500
From: <[hidden email]>
To: <[hidden email]>
Subject: [Elecraft] KPA1500 and noise
Message-ID: <362C6C03ECC34C00992DDFCC51D05C03@MININTMC1HLDC>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
        reply-type=original

Recently I have noticed that I have a very high noise lever at my QTH, which I have never had.  Today as I was shutting down my station I turned off the
KPA1500 first, and my noise dropped from S7 to S1 instantly.

I turned the Amp back on and the noise came back.  Have any of you ever observed this?

Thanks in advance

Ronnie W5SUM



------------------------------

******
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Re: KPA1500 and Noise

Ronnie Hull
I'm only using port 1.  I did find the ground in my circuit breaker box,
well.. not loose really.. but got a couple of turns on it.. it actually made
a 1 DB difference in the noise. May be on to something here.

thanks for all the suggestions guys

Ronnie

-----Original Message-----
From: Dauer, Edward
Sent: Saturday, May 09, 2020 10:05 AM
To: [hidden email] ; [hidden email]
Subject: KPA1500 and Noise

Which of the amp's antenna outputs are you using?  When the KPA1500 is
switched off the antenna is internally defaulted to connector number one.
So if the noise is coming in via an antenna connected to number two, it
should drop when power to the amp is turned off.

Ted, KN1CBR

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Message: 6
Date: Fri, 8 May 2020 19:28:24 -0500
From: <[hidden email]>
To: <[hidden email]>
Subject: [Elecraft] KPA1500 and noise
Message-ID: <362C6C03ECC34C00992DDFCC51D05C03@MININTMC1HLDC>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original

Recently I have noticed that I have a very high noise lever at my QTH, which
I have never had.  Today as I was shutting down my station I turned off the
KPA1500 first, and my noise dropped from S7 to S1 instantly.

I turned the Amp back on and the noise came back.  Have any of you ever
observed this?

Thanks in advance

Ronnie W5SUM



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