[Amps] Triode Amps

[Robert W5AJ]

Tim,
do you initially check 8877 filament voltage?   Monitor regularly?
Robert W5AJ



On Thu, Dec 2, 2021 at 3:19 PM Tim Duffy <k3lr at k3lr.com> wrote:

> My favorite triode for 1500 watts all day is a single 8877. 4KV and 30
> watts
> drive.
>
> Used 8877s exist and are more than capable for long lives. Some of the
> 8877s
> at K3LR have date codes from the 70s... still going strong
>
> 73
> Tim K3LR
>
> -----Original Message-----
> From: Amps [mailto:amps-bounces at contesting.com] On Behalf Of Peter Voelpel
> Sent: Thursday, December 2, 2021 4:16 PM
> To: 'Kim Elmore'; amps at contesting.com
> Subject: Re: [Amps] Triode Amps
>
> Eimac specifies 890W for a single tube at 3.5KV plate voltage and 740W at
> 3kV.
>
> 73
> Peter, DJ7WW
>
> -----Original Message-----
> From: Amps [mailto:amps-bounces at contesting.com] On Behalf Of Kim Elmore
>
>
> The 3-500Z is an excellent tube, but 1500 W isn't reasonably available
> out of a pair, even at increased plate voltage
>
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