[Elecraft] KPA1500 with P3 Transmit Monitor

[Gordon LaPoint]

I must be missing something here.   I don't see where the original 
poster had anything to do with a tuner between the K3 and the KPA1500.   
He wanted to hook his P3 TX monitor input to the output of the KPA1500 
amp, before the amp tuner.  Or maybe I misunderstood the original post.
Gordon - N1MGO

On 11/02/2017 02:20 PM, Bob McGraw K4TAX wrote:
> Most authorities I read and follow strongly suggest one NOT use a 
> tuner between the radio and the amp.
>
> This "old wives tail" goes back to the time many to most early tube 
> type grounded grid amps did not have a tuned input.  Seems that hams 
> today choose to believe and practice old and outdated methodology 
> {largely because someone said so}  as opposed to learning and using 
> current and correct methods.
>
> 73
>
> Bob, K4TAX
>
>
>
> On 11/2/2017 1:14 PM, RIchard Williams via Elecraft wrote:
>> James,
>> Am not sure why you need a tuner between the radio and the amp in the 
>> first place??  As of now, I have my K3S or K3 driving a Alpha 9500.  
>> I never have used the tuner in either when driving the amp?  I assume 
>> the KPA9500 will have a 52 ohm input, and you would not need a tuner.
>> Dick, K8ZTT
>>
>>        From: James Wilson <w4rks73 at gmail.com>
>>   To: Elecraft <elecraft at mailman.qth.net>
>>   Sent: Thursday, November 2, 2017 11:54 AM
>>   Subject: [Elecraft] KPA1500 with P3 Transmit Monitor
>>     Looking at a draft of the KPA1500 amplifier, it appears
>> that the only place to install  a TxMon or Wattmeter coupler
>> is at the  -  output  -  of the built-in tuner.
>>
>> At that point, it will always show the SWR of the
>> coax feedline, not the SWR that the amplifier "sees" as
>> adjusted by the built-in tuner.
>>
>> Or, is there a coupler built-in inside the KPA1500 ?
>>
>> What am I missing?
>>
>> Jim - W4RKS
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:Elecraft at mailman.qth.net
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>> Message delivered to richarddw1945 at yahoo.com
>>
>>
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:Elecraft at mailman.qth.net
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>> Message delivered to rmcgraw at blomand.net
>
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to gordon.lapoint at gmail.com


-- 
Gordon - N1MGO