According to Orr its a 450W tube.
I used to visit Sam Harris, W1FZJ/W1BU, a lot when he was still in MA and it
was fun watching his 75M SSB station in operation: S Line, 30L1 and 750TL's
with 7500V!
I just made sure the rig was off when I was up on the 120' towers fixing or
installing something.
Carl
KM1H
----- Original Message -----
From: "Roger (sub1)" <sub1@rogerhalstead.com>
To: <amps@contesting.com>
Sent: Thursday, March 31, 2011 8:17 PM
Subject: Re: [Amps] 4-400A low output, VU3RAZ problem
> On 3/31/2011 6:13 PM, Carl wrote:
>> Ummm, you guys are beeing very selective in the spec reading department.
>>
>> For AB1 the max is 800 and typical is 750. For AB2 the max is still 800
>> but
>> the typical is 500 since the tube is being run harder; 800V would likely
>> exceed the anode dissipation with full drive and loading.
>>
>> OTOH, for Class C AM its 600/500.
>>
>> But what do hams care about ratings....run then until the anodes get a
>> hole
>> in them.
>
> Were you looking over my shoulder when I fired up my first 6C21? I
> didn't even get to "He" out of "Hello Test" and half the plate was
> gone. Bright too! <:-)) But what the hey... Back then they were $5.00
> or less and readily available.
> Unfortunately I had to disassemble the 800 ma plate current meter to get
> the needle off the peg. IIRC the 6C21 being the pulse modulator version
> had something like a 30A cathode emission capability which might exceed
> that 600 Watt (?) plates ratings just a tad at 2800 V.
>
> 73
>
> Roger (K8RI)
>
> <snip>
>
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