Re: [Amps] QB3-300 Amplifier

[Alek Petkovic <vk6apk@eon.net.au>]

Yep, I'll second that. I built a sinfully ugly, cheap and indestructible 
amp with a pair in GG. Still working as good as ever 15 years on with the 
original tubes.

73, Alek.
VK6APK

At 07:54 PM 28/10/2004, Peter Frenning, OZ1PIF wrote:
> These tubes work very well in GG, see my FL2000 conversion on my homepage 
> below..
> (They are low power relatives of the QB3,5/750 and QB4/1100 etc)
>
> Vy 73 de OZ1PIF, Peter
>
> **********  OZ1PIF **************
> email: oz1pif(no-spam-filler)@privat.dk
> http://home24.inet.tele.dk/oz1pif/
> Ph. +45 4619 3239
> Snailmail:
> Peter Frenning
> Ternevej 23
> DK-4130 Viby Sj.
> Denmark
> ***********************************
> ----- Original Message ----- From: "Alberto" <re349@yahoo.com>
> To: <amps@contesting.com>
> Sent: Thursday, October 28, 2004 1:44 PM
> Subject: [Amps] QB3-300 Amplifier
>
>
> > Hello!
> >
> > Recently, i got some spare QB3-300 tubes (equivalent
> > SRS455, 6155, 4-125), so I´m planning a new SSB
> > amplifier using them. I've seen lots of configurations
> > for these tubes in PA operation. Watching tube
> > datasheet, it seems like grid driven class B operation
> > would work: Va=2500V; Vg2=350V; Vg1=-40V aprox.
> >
> > Some PA builders say also g-g configuration would
> > work; that is grid and screen connected and grounded
> > together. (I don't think so)
> >
> > I'd like to know the usual ratings for amateur SSB
> > operation. Has anybody experience using QB3-300 in PA?
> >
> > Thanks!
> > Alberto
> > EA4PL
> >
> >
> >
> > __________________________________
> > Do you Yahoo!?
> > Yahoo! Mail - Helps protect you from nasty viruses.
> > http://promotions.yahoo.com/new_mail
> > _______________________________________________
> > Amps mailing list
> > Amps@contesting.com
> > http://lists.contesting.com/mailman/listinfo/amps
>
>
> _______________________________________________
> Amps mailing list
> Amps@contesting.com
> http://lists.contesting.com/mailman/listinfo/amps

http://www.qrz.com/vk6apk
http://profiles.yahoo.com/vk6apk 

_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps