Why not 3 GS35B ...?
Mike KC7NOA
> From: km1h@jeremy.mv.com
> To: saveatpharmacy@gmail.com; amps@contesting.com
> Date: Thu, 16 Feb 2012 11:09:45 -0500
> Subject: Re: [Amps] 3-500 to 4-250 tube conversion
>
> 10-4 good buddy
>
>
> ----- Original Message -----
> From: "kennon lewis" <saveatpharmacy@gmail.com>
> To: <amps@contesting.com>
> Sent: Thursday, February 16, 2012 2:58 AM
> Subject: [Amps] 3-500 to 4-250 tube conversion
>
>
> > hello. recently I received an amplifier with 6 bad 3-500z tubes in it. i
> > have a bunch of good 4-250 and 4-400 tubes on hand and am looking to
> > convert the amp to run on these tubes. the cost of purchasing 6 new 3-500
> > tubes is out of the question at this time. the amp covers 10 - 80 meters.
> > looking at the tube data it looks like all i need to do is strap pins 2
> > and
> > three together with a low ohm resistor and that should do the job, one
> > being a triode and the other a tetrode. the power supply seems more than
> > adequate. any schematic help or other information will be greatly
> > appreciated. thanks ke5rgm
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