----- Original Message -----
From: "Jim Thomson" <jim.thom@telus.net>
To: <amps@contesting.com>
Sent: Monday, July 02, 2012 10:03 PM
Subject: [Amps] 8877 Plate Voltage
> Date: Sun, 1 Jul 2012 15:20:04 -0400
> From: Steve Bookout <steve@dx4win.com>
> Subject: Re: [Amps] 8877 Plate Voltage
>
> I second that!
>
> I've been running one @4200, or so, since '85 with no issues.
>
> 22 watts in gives me 1500 out. A 3 db pad sure would make it less touchy,
> when tuning.
>
> ## 22 in and 1500w out = 18.34 db gain. Use a parasitic suppressor..and
> a glitch R. .
>
>
> 73 de Steve, NR4M
>
>
> ## I thought the 8877 required more drive than that...like 60w.
> I heard that once the B+ gets up above 3900....that the gain of the tube
> increases a whole bunch.
> Plan B is to use a pair of tubes..and run em at 3-5 kw pep out.
>
> ## IF a pad is used, insert it inside the RF deck... just prior to the
> tuned input. Then the pad is
> not in the circuit on RX.
>
> Jim VE7RF
You can also put the pad right at the cathode and get the benefit of some
NFB.
Carl
KM1H
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