[Elecraft] Fw: KPA500 Question re the K3s per band power control

[John E. Reiser]

----- Original Message ----- 
From: "John E. Reiser" <reiserj at optonline.net>
To: "D Joyce" <d_joyce at sympatico.ca>
Sent: Sunday, August 14, 2011 8:50 AM
Subject: Re: [Elecraft] KPA500 Question re the K3s per band power control


> Hi Doug,VE3MV,
>
> PWR ON is not the right control.  Try setting BAND CHG to STBY and you 
> will see what I'm concerned with.
>
> By the way, the reason that I want to have this working right is that two 
> of my WARC-band antennas are PAR EndFedz which can only take 100 watts. 
> If I am on 20 meters with the beam and have the amp on with 500 watts and 
> then go to 30 meters, I want the amp to automatically go to standby and 
> the power from the K3 to go up to 100 watts just because of the band 
> change.  It's supposed to work that way, but doesn't.
>
> 73, John
>
>
> ----- Original Message ----- 
> From: "D Joyce" <d_joyce at sympatico.ca>
> To: "John E. Reiser" <reiserj at optonline.net>; "Elecraft List" 
> <elecraft at mailman.qth.net>
> Sent: Sunday, August 14, 2011 8:27 AM
> Subject: Re: [Elecraft] KPA500 Question re the K3s per band power control
>
>
>> GM John:
>>
>> I'm not seeing that problem here with KPA500 s/n 234 and a recent K3/10 
>> (s/n 54xx).  I'm using FW 4.39 in the K3 and FW 1.11 in the KPA500. 
>> (Gary sent me this most recent FW for the Amp on Fri).
>>
>> I changed the PWR ON config in the KPA500 to "STBY" and the only thing it 
>> affects is the power setting when turning the Amp On.  Changing bands 
>> from either the K3 or the Amp doesn't change OPER to STBY or STBY to 
>> OPER. I've set the STBY power level to be 5 W and the OPER power level to 
>> be 125W (approx 8 W from the K3) on all bands (all in CW mode).  Then 
>> regardless of which unit is used to change bands and whether the Amp is 
>> in OPER or STBY the power levels are as just indicated.  It works as 
>> expected.
>>
>> Hope that helps.
>>
>> 73,  Doug  VE3MV
>>
>> ----- Original Message ----- 
>> From: "John E. Reiser" <reiserj at optonline.net>
>> To: "D Joyce" <d_joyce at sympatico.ca>; "Elecraft List" 
>> <elecraft at mailman.qth.net>
>> Sent: Saturday, August 13, 2011 6:24 PM
>> Subject: Re: [Elecraft] KPA500 Question re the K3s per band power control
>>
>>
>>> Yes, that much works here too.
>>>
>>> What doesn't work is setting the KPA500 MENU: BAND CHG to STBY and 
>>> expecting that the power out from the K3 will reliably switch to higher 
>>> power whenever the amp is in STANDBY mode, both whether invoked by the 
>>> button on the amp or by simply changing bands on the K3, and then 
>>> reliably dropping to an appropriate lower level whenever the amp is put 
>>> in OPERATE mode by tapping the operate/standby button on the amp.
>>>
>>> Whew!  I got it all into one sentence.  With 300+ KPA500s out there, am 
>>> I the only one to observe this?  Come on guys, can't anyone test this 
>>> for me with their setup?  How about it W4TV?
>>>
>>> 73, John, W2GW
>>
>>
>