[Drake] 6JB6A tubes

[Allen (Marty) Martin]

Interesting thread. I have had good luck with the Raytheon tubes! Apparently
others have not though.

Marty

----- Original Message ----- 
From: "fkamp" <fkamp at comcast.net>
To: <k4oah at mindspring.com>
Cc: "Drake list" <drake at mailman.qth.net>
Sent: Wednesday, February 15, 2006 9:45 AM
Subject: Re: [Drake] 6JB6A tubes


> Garey Barrell wrote:
> > Darrell -
> >
> > Interesting...  The International tubes I tried would neutralize with
> > no problem, but were very hard to drive, particularly on 15 and 10M.
> > I attributed it to the considerably different internal lead structure
> > compared to US made tubes.
> >
> > Some brands require considerably different neutralization
> > capacitances.  I'd just as soon avoid making changes to the
> > transmitter though until it becomes necessary.  So far "good" brand
> > tubes are still readily available.
> Before I converted my Drakes to use 6146s, I used Sylvania brand 6JB6s
> with no problems at all.
>
> Regards,
> Frank Kamp
> K5DKZ
>
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