Helge,
The question about if I wanted to sell one or two of those tubes was a
question that you or someone else had asked me and I was responding to.
On my computer. I can quote the original message then split it up and
respond to only one line item or question at a time.
On my screen, my text has it's background colored a light green and the text
is BOLD so it's an easy and obvious way to tell what I sent and what I
didn't.
Unfortunately, when the reflector rebroadcasts my email, it all comes out
looking the same.
Even that would not be a problem if I could respond directly to you because
then you would get the unadulterated message and see the differences in the
text and background, but mail I send to you keeps getting rejected by your
server with a statement that you are over your storage limit or something to
that
effect.
Regards,
Dennis O.
In a message dated 10/6/03 1:57:02 PM Central Daylight Time,
helge.skram@tiscali.no writes:
> Hello Dennis
>
> I don't have any 8122 to sell.
> Burle is still manufacturing the 8122. Burle is tube division of the
> formerly RCA company.
> I am using 8122 in a 50 MHz amp and have only 2 used spare tubes of
> unknown condition.
>
> Many of the pins are duplicate and don't need to be connected below
> 30MHz
> According to pin outline in RCA Transmitting tube manual
> Pin 1,4 and 9: Cathode
> Pin 3, 8 and 11: Grid 1
> Pin 2, 10,7 and ring: Grid 2
> Pin 5 an 6: heater
>
> Obviously tubes with pin 5 and 6 cut too short for the socket, can not
> be used. I don't think it is a goog idea to solder on the socket, but
> maybe it ca work.
>
> Helge
>
>
> -----Original Message-----
> From: amps-bounces@contesting.com [mailto:amps-bounces@contesting.com]
> On Behalf Of Dennis12Amplify@aol.com
> Sent: 3. oktober 2003 21:44
> To: ramcleod@comcast.net; Amps@contesting.com
> Subject: Re: [BULK] - [Amps] NCL 2000?
>
> In a message dated 10/2/03 4:38:44 PM Central Daylight Time,
> ramcleod@comcast.net writes:
>
>
> > Dennis- the 4662 no. is a miiltary type stock number, the gov't
> version of
> > the 8122. There is probably a better name, but they are the same
> tube. I can
> > quote a source, if I can find it.
>
> Helge,
>
> Thank you for the info.
>
> Do you want to sell a pair or two?
>
> I would, if I was sure they were good, but after downloading the PDF
> files
> for those tubes I found that all the internal elements have either
> duplicated
> or triplicated element to pin connections; with the exception of the
> filament
> pins.
>
> Three of the six tubes I have here have had either pin 5 or pin 6 cut
> short.
>
> The 'normal length for those pins is about .250 inches, and on three of
> the
> tubes I have, either pin 5 or pin 6 has been cut down to about 1/3 or
> 1/4 of
> that length.
>
> Looking closely I can see the pins were purposely cut short with a pair
> of
> diagonal cutting pliers, and had not been broken off as I originally
> thought.
>
> Here's what I have:
>
> Burle 8122 Date code 91-17 Pin 5 cut short
> Burle 8122 Date code 91-30 Pin 6 cut short
> RCA 4662 Date Code 86-04 Pin 10 cut short
> Burle 4662 Date Code 92-09 Pin 5 cut short Pink Ceramic
> base
> RCA 4662 Date Code 80-22 Pin 9 cut short
> RCA 4662 Date Code 85-43 Pin 4 cut short
>
> So the way I see it, I have three tubes with either pin 5 or pin 6 cut
> short, that are useless unless the remaining length of the shortened pin
> reaches
> the socket contact, or some other method is used to make the connection
> to that
> filament pin.
>
> Thanks again,
>
> Dennis O.
> _______________________________________________
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> Amps@contesting.com
> http://lists.contesting.com/mailman/listinfo/amps
>
>
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