[Amps] where to begin

Vic K2VCO k2vco.vic at gmail.com
Thu Nov 7 11:37:31 EST 2013


I found this article
<http://www.granta.g4axx.com/linear.php3>
provides extremely helpful information about designing and constructing a tetrode amplifier.

On 11/7/2013 7:47 AM, Carl wrote:
> While the GU91B ( made up as a never registered 4CX1600B for the US market) is long gone
> the HB circuit can easily be adapted to the 4CX1500B. Or just use the various earlier
> 4CX1000A/4CX1500B circuts in the older ARRL and West Coast handbooks.
>
> Carl
> KM1H
>
>
> ----- Original Message ----- From: "Roger (K8RI)" <k8ri at rogerhalstead.com>
> To: <amps at contesting.com>
> Sent: Wednesday, November 06, 2013 10:24 PM
> Subject: Re: [Amps] where to begin
>
>
>> On 11/6/2013 8:17 PM, Bill Turner wrote:
>>> ORIGINAL MESSAGE:          (may be snipped)
>>>
>>> On Wed, 6 Nov 2013 21:31:26 -0200, you wrote:
>>>
>>>> so, do you have any point, link, etc where I can learn about *Design
>>>> with valves* ???
>>>
>>> REPLY:
>>>
>>> The ARRL Handbook is a good place to start. Nearly everything you need is in
>>> there and when you run across something that's not clear, just ask a
>>> question here. Recent editions are usually available on eBay or amazon.com.
>>> Don't get one more than about three years old.
>>
>> If you also get it on disk, it turns searching for a particular topic, reference, quote,
>> or author from minutes or hours into a few seconds.
>>
>> Although some of the older ones may have tubes/valves covered in more detail.
>>
>> The theory is good, but many of the circuit designs may have a flaw or two.
>>
>> Newer books will have newer material although some of the out dated stuff gets dropped.
>> OTOH they have had a 4CX1600B amp in there for quite a few years. It's a nice amp but
>> the tube was dropped from production years ago.
>>
>> They seem to change very little from year to year, but new stuff does get added so,
>> normally the latest is best and they have been on DVD for quite a few years. You can
>> install the book, or just copy the files and use a link to the beginning to start it or
>> click on setup application.
>>
>> There is an extensive section on Vacuum Tube Basics with the rest of the chapter
>> evolving into amplifier design.
>>
>> 73 and good luck,
>>
>> Roger (K8RI)
>>
>>>
>>> Good luck and have fun!
>>>
>>> 73, Bill W6WRT
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>>>
>>
>>
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>
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-- 
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco/


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