[Henry] Henry Digest, Vol 26, Issue 1

[Eric Dobrowansky K2WD]

John, 



Make sure you are not at the wrong peak on either the LOAD cap or the PLATE roller inductor. 



The first day I had my 3KP I became quite concerned when the amp appeared to have quite poor efficiency. Come to find out I was on the wrong peak of the PLATE tuning.  Once I found the proper peak point, the amp came alive and started to perform as expected. 



I sold the amp awhile back, so I can't tell you my tuning numbers. But just start by driving it with only 10w or so, then tune the PLATE control thru its range and find the best peak. 



Eric 
K2CB 

----- Original Message ----- 
From: henry-request at mailman.qth.net 
To: henry at mailman.qth.net 
Sent: Saturday, October 23, 2010 12:01:03 PM 
Subject: Henry Digest, Vol 26, Issue 1 

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Today's Topics: 

   1. 3K Premier problem on 10 Meters (John Becker) 


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

Message: 1 
Date: Sat, 23 Oct 2010 10:33:02 -0500 
From: John Becker <> 
Subject: [Henry] 3K Premier problem on 10 Meters 
To: henry at mailman.qth.net 
Message-ID: <4CC3002E.2030005 at comcast.net> 
Content-Type: text/plain; charset=ISO-8859-1; format=flowed 

I bought a used 3K Premier about 3 years ago and have been very happy 
with it so far. 

Recently we've started having occasional openings on 10 meters, and I've 
discovered that my amp runs out of tuning range on 10. The roller 
inductor is all the way at minimum inductance and I'm not able to tell 
if the plate current is totally dipped because I never get to the point 
where it dips and then starts increasing again. I must be very close 
because I have good power output. 

This happens even at the very bottom of the band, so it can only be 
worse at higher frequencies. Has anyone else seen this and is there a 
known solution? Thanks! 

73, 

John, K9MM 


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End of Henry Digest, Vol 26, Issue 1 
************************************ 




Eric 
K2CB 

----- Original Message ----- 
From: henry-request at mailman.qth.net 
To: henry at mailman.qth.net 
Sent: Saturday, October 23, 2010 12:01:03 PM 
Subject: Henry Digest, Vol 26, Issue 1 

Send Henry mailing list submissions to 
        henry at mailman.qth.net 

To subscribe or unsubscribe via the World Wide Web, visit 
        http://mailman.qth.net/mailman/listinfo/henry 
or, via email, send a message with subject or body 'help' to 
        henry-request at mailman.qth.net 

You can reach the person managing the list at 
        henry-owner at mailman.qth.net 

When replying, please edit your Subject line so it is more specific 
than "Re: Contents of Henry digest..." 


Today's Topics: 

   1. 3K Premier problem on 10 Meters (John Becker) 


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

Message: 1 
Date: Sat, 23 Oct 2010 10:33:02 -0500 
From: John Becker <> 
Subject: [Henry] 3K Premier problem on 10 Meters 
To: henry at mailman.qth.net 
Message-ID: <4CC3002E.2030005 at comcast.net> 
Content-Type: text/plain; charset=ISO-8859-1; format=flowed 

I bought a used 3K Premier about 3 years ago and have been very happy 
with it so far. 

Recently we've started having occasional openings on 10 meters, and I've 
discovered that my amp runs out of tuning range on 10. The roller 
inductor is all the way at minimum inductance and I'm not able to tell 
if the plate current is totally dipped because I never get to the point 
where it dips and then starts increasing again. I must be very close 
because I have good power output. 

This happens even at the very bottom of the band, so it can only be 
worse at higher frequencies. Has anyone else seen this and is there a 
known solution? Thanks! 

73, 

John, K9MM 


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

_______________________________________________ 
Henry mailing list 
Henry at mailman.qth.net 
http://mailman.qth.net/mailman/listinfo/henry 


End of Henry Digest, Vol 26, Issue 1 
************************************