[Amps] Different 3-500Z amplifiers

[Carl]

Heat dissipation is the same for identical power but the graphite version 
takes longer to reach that point, retains it a lot longer, and should be 
given an extra few minutes of fan time before shutting off.

Carl
KM1H


----- Original Message ----- 
From: "David Craig" <davidhcraig at verizon.net>
To: "'Amps reflector'" <amps at contesting.com>; "'Paul Baldock'" 
<paul at paulbaldock.com>
Sent: Tuesday, May 28, 2013 11:16 AM
Subject: Re: [Amps] Different 3-500Z amplifiers


> IMHO the graphite anode version puts out & maintains WAY MORE heat
> than the good old moly style.  Just noticed recently RF Parts has a 
> mention
> about that too.
>
> Dave N3DB
>
> -----Original Message-----
> From: Amps [mailto:amps-bounces at contesting.com] On Behalf Of Carl
> Sent: Tuesday, May 28, 2013 10:43 AM
> To: 'Amps reflector'; Paul Baldock
> Subject: Re: [Amps] Different 3-500Z amplifiers
>
> Metal anodes were produced by Eimac and China.
>
> Graphite anodes were/are produced by Eimac, Amperex, Philps, and China.
>
> Carl
> KM1H
>
>
> ----- Original Message ----- 
> From: "Paul Baldock" <paul at paulbaldock.com>
> To: "'Amps reflector'" <amps at contesting.com>
> Sent: Monday, May 27, 2013 10:05 PM
> Subject: [Amps] Different 3-500Z amplifiers
>
>
>>
>> I have 2 amps with 3-500Zs. The 3-500Z's have Eimac labeling. The
>> anode of these has vertical fins.
>>
>> I just acquired another amp with 3-500Zs. These tubes have no
>> lebeling and have an anode with  a horizontal disks.
>>
>> Could somebody educate me on the operational difference if any of
>> these 2 very different looking 3-500Z's?
>>
>> Thanks
>>
>> - Paul
>>
>> _______________________________________________
>> Amps mailing list
>> Amps at contesting.com
>> http://lists.contesting.com/mailman/listinfo/amps
>>
>>
>> -----
>> No virus found in this message.
>> Checked by AVG - www.avg.com
>> Version: 10.0.1432 / Virus Database: 3184/5863 - Release Date: 05/28/13
>>
> _______________________________________________
> Amps mailing list
> Amps at contesting.com
> http://lists.contesting.com/mailman/listinfo/amps
>
> _______________________________________________
> Amps mailing list
> Amps at contesting.com
> http://lists.contesting.com/mailman/listinfo/amps
>
>
> -----
> No virus found in this message.
> Checked by AVG - www.avg.com
> Version: 10.0.1432 / Virus Database: 3184/5863 - Release Date: 05/28/13
>