You need modify its Pi network in 10mtrs, if not this amplifier will not work
in 10 mtrs
,I use Chinese 813, but withuout experience in American 813.
73!Hsu
----- Original Message -----
From: "Vic K2VCO" <vic@rakefet.com>
To: <amps@contesting.com>
Sent: Thursday, March 31, 2011 7:55 AM
Subject: Re: [Amps] 813 Amplifier Article
> Thank you for your comments!
>
> The problem is that the schematic is UGLY and drawn in pencil. With lots of
> erasures! Also
> the circuit is based on what parts I happened to have, and also is CW only
> (unless you
> find the sound of class-C amplified SSB helps clear a frequency in contests).
> I do intend
> to add pics of the back and the bottom.
>
> On 3/30/2011 4:45 PM, Paul Christensen wrote:
>> Vic's 2 X 813 amp gets my vote for the "coolest-looking" amp ever made.
>> Check it out on his website and see if you don't agree. Classic round
>> metering, jeweled lamps, RCA knobs, heavy-duty toggle switches, etc. How
>> about adding some pics of the back and schematic, Vic?
>>
>> Paul, W9AC
>>
>> ----- Original Message -----
>> From: "Vic K2VCO"<vic@rakefet.com>
>> To:<amps@contesting.com>
>> Sent: Wednesday, March 30, 2011 7:33 PM
>> Subject: Re: [Amps] 813 Amplifier Article
>>
>>
>>> Looks good to me.
>>>
>>> If you have more tubes than you need, I'm accumulating NOS ones to build
>>> yet another 813
>>> amplifier.
>>>
>>> I would like to build one with 4 of them this time!
>>>
>>> On 3/30/2011 4:22 PM, Bill Smith wrote:
>>>> Is this design still ok for the 813. It was written long ago I think.
>>>> http://jlandrigan.com/files/813%20Grounded%20Grid%20Amplifier/GE%20Ham%20News%20813%20GG%20article.pdf
>>>>
>>>> I have a bunch of these tubes in hand.
>>>> 73,
>>>> Bill Smith KO4NR
>>>
>>> --
>>> Vic, K2VCO
>>> Fresno CA
>>> http://www.qsl.net/k2vco/
>>> _______________________________________________
>>> Amps mailing list
>>> Amps@contesting.com
>>> http://lists.contesting.com/mailman/listinfo/amps
>>
>> _______________________________________________
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>
> --
> Vic, K2VCO
> Fresno CA
> http://www.qsl.net/k2vco/
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