7.5V@21A for both. A taller chimney is needed for the 4x1
Carl
KM1H
----- Original Message -----
From: "Rob Atkinson" <ranchorobbo@gmail.com>
To: "Carl" <km1h@jeremy.mv.com>
Cc: <amps@contesting.com>
Sent: Tuesday, May 10, 2011 10:43 AM
Subject: Re: [Amps] 3-1000 Amplifiers
I wonder what would happen if a triode connected 4-1000A were used in
that BTI amp? Off-hand I don't know what the filament v. is for the
3x1.
Rob
K5UJ
On Tue, May 10, 2011 at 7:58 AM, Carl <km1h@jeremy.mv.com> wrote:
> In the early 90's I contracted to design one for ITT that covered 4-20MHz
> with 6 preset frequencies and was to be used in Europe. About 50 were
> built
> but after the prototype shakedown I never heard any more.
>
> Carl
> KM1H
>
>
> ----- Original Message ----- From: "Rob Atkinson" <ranchorobbo@gmail.com>
> To: <amps@contesting.com>
> Sent: Monday, May 09, 2011 8:00 PM
> Subject: Re: [Amps] 3-1000 Amplifiers
>
>
>> Dick,
>>
>> That BTI amp is the only ham amp I know of. There were some
>> commercial amps made that used the 3-1000 but I forget who made
>> them--Harris maybe.
>>
>> This is one case where if you come across one of those BTIs, the tube
>> may very well be worth more than the rest of the amp. The last time I
>> checked, RF Parts wanted $1200 for a 3x1.
>>
>> 73
>> Rob
>> K5UJ
>>
>> A local found a BTI LK-2000 in an SK's barn (really, a true "barn
>> find"). That got me wondering
>> how many Ham Amps were available (commercial not HB) that used the
>> 3-1000. I guess that
>> the proliferation of 4-1000's may have limited the 3-1000 appeal.
>> The LK-2000 I saw was only the second one I have seen in 55 years of
>> Hamming.
>>
>> Does anyone know of any other commercial Ham Amps that used the 3-1000 ?
>>
>> 73, Dick, W1KSZ
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