Fw: Re: [Kenwood] 6146 Line of Tubes

Sun, 25 Apr 2004 12:19:32 -0400

Sorry Garey:
I post my response on the wrong reflector.
Pete

--------- Forwarded message ----------
From: Peter A Markavage <[email protected]>
To: [email protected]
Date: Sun, 25 Apr 2004 03:01:35 -0400
Subject: Re: [Kenwood] 6146 Line of Tubes

Specification wise, plate dissipation, currents, voltages, etc. between
the 6146 & "A" pretty much match the early and later versions of the "W".
But, I believe, the interelectrode capacitances between the various
elements in the "W" tube more closely match the 6146B.

But, after seeing all the numbers and reading all the reports of good and
bad things about the operation of this family of tubes, my Valiant has
been running two 6146A's (not quite sure if they're both A's since I
wiped the number off of it years ago) and 1 6146B in the final for the
last 15 years. My Apache runs a pair of 6146B's. The TS-830 has 1 S2001A
and 1 6146 A running in it for the last 10 years. All perform well on all
bands including 10 meters. Closely matched tubes are generally the rule
of thumb but I never learned that rule.

Pete, WA2CWA

On Sat, 24 Apr 2004 22:06:13 -0400 Garey Barrell <[email protected]>
writes:
> Pete -
> 
> I read your next message showing Frank's site.  Notice the dates 
> on the 6146W data sheet (7/63), which is BEFORE Glen's switchover 
> date of ~64, and compare to the date on the 6146B sheet (2/64).
> 
> So at the time that particular W sheet was printed, W's WERE 
> still really A's!  Now if we could only find a W data sheet dated 
> after mid 1964?  :-)
> 
> I'm dazzled!!  :-)
> 
> 73, Garey - K4OAH
> Atlanta
> 
> Peter A Markavage wrote:
> > If you have the desire to get some in depth information and
> > specifications on the 6146 line of tubes go here:
> > 
> > http://www.mif.pg.gda.pl/homepages/frank/sheets6.html
> > 
> > Print out the specification sheets, put them side by side, and you 
> too
> > can review the differences and similarities. Become an instant 
> expert and
> > dazzle your friends with the knowledge.
> > 
> > Pete, WA2CWA