[Kenwood] T-599D Final Amp Tubes

Sat Apr 18 13:31:33 EDT 2009

Thanks to everybody who responded to my inquiry. 
Really appreciate the input. 
My T-599D had S2001 tubes in it when I got it. 
Joe... what info you cited was indeed the "conflicting" info I ran across. 
Since one of them is shorted, I'll try a pair of 6146's and see if the neutralization holds. 
If it doesn't, I'll go to 6146B's. 
I wonder if the conflicting info published in the Kenwood ops manual vs. the service manual is due to poor translation into English. 
I ran into this with other Kenwood hybrids in the past. 
If anyone else out there has more precise info on the issue of whether or not S2001 = 6146 and S2001A = 6146B, please comment. 
Tnx and 73, Bill, w0ng 

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Today's Topics: 
   1. T-599D Final tubes ??? (w0ng at comcast.net) 
   2. Re: T-599D Final tubes ??? (Peter A Markavage) 
   3. Re: T-599D Final tubes ??? (Joe LeKostaj) 
---------------------------------------------------------------------- 
Message: 1 
Date: 2009年4月17日 19:39:33 +0000 (UTC) 
From: w0ng at comcast.net 
Subject: [Kenwood] T-599D Final tubes ??? 
To: "kenwood at mailman.qth.net" <kenwood at mailman.qth.net> 
Message-ID: 
        <942619408.2757011239997173350.JavaMail.root at sz0147a.emeryville.ca.mail.comcast.net> 

Content-Type: text/plain; charset=utf-8 
I'd like to ask the group for a little help. 
I'm finding conflicting printed info on which type of final amp tube should be used in my T-599D transmitter. 
Is it a pair of 6146B's or the plain 6146's? 
Tnx, Bill, w0ng 
------------------------------ 
Message: 2 
Date: 2009年4月17日 16:42:48 -0400 
From: Peter A Markavage <manualman at juno.com> 
Subject: Re: [Kenwood] T-599D Final tubes ??? 
To: w0ng at comcast.net 
Cc: kenwood at mailman.qth.net 
Message-ID: <20090417.164248.5420.0.manualman at juno.com> 
Content-Type: text/plain; charset=us-ascii 
6146B's for the T-599D. 
Pete, wa2cwa 

On 2009年4月17日 19:39:33 +0000 (UTC) w0ng at comcast.net writes: 
>>> I'd like to ask the group for a little help. 
> I'm finding conflicting printed info on which type of final amp tube 
> should be used in my T-599D transmitter. 
>> Is it a pair of 6146B's or the plain 6146's? 
>> Tnx, Bill, w0ng 

------------------------------ 
Message: 3 
Date: 2009年4月18日 09:59:31 -0500 
From: Joe LeKostaj <k9ly at comcast.net> 
Subject: Re: [Kenwood] T-599D Final tubes ??? 
To: "kenwood at mailman.qth.net" <kenwood at mailman.qth.net> 
Message-ID: <p06240801c60f9790eaa3@[192.168.0.3]> 
Content-Type: text/plain; charset="us-ascii" ; format="flowed" 
Bill, 
My T-599D operating manual says "S2001 (6146B)" on the Features page, 
but I believe this is an error. Is this the conflicting info you 
mentioned? My understanding is that S2001 = 6146/6146A, while S2001A 
= 6146B. 
Everywhere else in the T-599D manual it calls the finals S2001, and 
that is what my T-599D contains. So I would replace them with 
6146/6146A, not B. 
The service manual for TS-530S says it uses "S2001A/6146B". So 
evidently Kenwood switched to the B version for their later tube PA 
models. 
HTH. 73, 
Joe K9LY 
At 7:39 PM +0000 4/17/09, w0ng at comcast.net wrote: 
>I'd like to ask the group for a little help. 
>I'm finding conflicting printed info on which type of final amp tube 
>should be used in my T-599D transmitter. 
>>Is it a pair of 6146B's or the plain 6146's? 
>
------------------------------ 
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