[NJARC] Very unusual Transistor radio :-) 1930's
Al Klase
ark at ar88.net
Fri Mar 13 16:35:49 EDT 2015
Gentlemen,
If you have the time period correct, they may be examples of the
seldom-seen Nixon field-effect transistor. Schematic symbol below:
Al
Al Klase – N3FRQ
Jersey City, NJ
http://www.skywaves.ar88.net/
On 3/13/2015 3:52 PM, Joe Cro wrote:
> Hello Bill,
> I know you knew your "stuff"! The shape of those 1N01A's
> give it away, don't they? Or could it be those shouldered raised
> bakelite four prong transistor sockets it uses? The fourth prong on
> the socket was used for a "trap" or cleanout for the transistors'
> drain, wasn't it? They used funny things way back in the 1970's for
> electronics, didn't they?
> The "trap" or cleanout for the drain was used to rid the sockets of
> electron molecules gathered there during electron bombardment. They
> prevent the transistor from doing it job, kind of like a lo mu NPN or
> PNP.
> I'm forever in awe of your expert electronic knowledge and still want
> to be like you when I grow up!
> Mod-U-later,
> Joe Cro N3IBX
>
> ----- Original Message -----
> *From:* William Overbeck <mailto:billoradio at aol.com>
> *To:* n3ibx at verizon.net <mailto:n3ibx at verizon.net> ; ark at ar88.net
> <mailto:ark at ar88.net> ; njarc at mailman.qth.net
> <mailto:njarc at mailman.qth.net>
> *Sent:* Friday, March 13, 2015 3:28 PM
> *Subject:* Re: [NJARC] Very unusual Transistor radio :-) 1930's
>
> Hi Joe.
>
> Yes I would like to date something made between 1968 to 1975.
>
> Bill Overbeck
>
> Regarding dating the thing, would you say it was made sometime
> between say 1968-1975? Maybe a little older.........
> Regards,
> Joe Cro N3IBX
>
>
>
>
> -----Original Message-----
> From: Joe Cro <n3ibx at verizon.net <mailto:n3ibx at verizon.net>>
> To: Al Klase <ark at ar88.net <mailto:ark at ar88.net>>; njarc
> <njarc at mailman.qth.net <mailto:njarc at mailman.qth.net>>
> Sent: Fri, Mar 13, 2015 12:01 pm
> Subject: Re: [NJARC] Very unusual Transistor radio :-) 1930's
>
> Just remember
> Reply = Poster
> Reply All =
> Everyone
>
> _________________________________________________________
>
> Hello Al,
> Yes, this guy did some real research. Those are
> Thermionic glass transistors that are not of the cold cathode
> variety. I would guess the 9V transistor radio battery would have
> fit somewhere in the compartment. It looks like all the
> transistors could be 1N01A's!
> It looks like the loop antenna is missing which would be a good
> barganing point if one wanted to buy this thing from the seller.
> Regarding dating the thing, would you say it was made sometime
> between say 1968-1975? Maybe a little older.........
> Regards,
> Joe Cro N3IBX
>
> ----- Original Message -----
> *From:* Al Klase <mailto:ark at ar88.net>
> *To:* njarc at mailman.qth.net <mailto:njarc at mailman.qth.net>
> *Sent:* Friday, March 13, 2015 11:09 AM
> *Subject:* Re: [NJARC] Very unusual Transistor radio :-) 1930's
>
> Just remember
> Reply = Poster
> Reply All = Everyone
>
> _________________________________________________________
> ------------------------------------------------------------------------
> Yes, those are glass transistors. They have pilot lights
> inside so you can tell that they are working properly.
>
>
> Al Klase – N3FRQ
> Jersey City, NJ
> http://www.skywaves.ar88.net/
>
> On 3/13/2015 10:49 AM, Bill wrote:
>
> Just remember
> Reply = Poster
> Reply All = Everyone
>
> _________________________________________________________
> I see seven transistors, must have an RF stage.
>
> On 3/13/2015 10:36, oldradio at comcast.net wrote:
>
> Just remember
> Reply = Poster
> Reply All = Everyone
>
> _________________________________________________________
> Acme Cleveland Ohio transistor radio model AC-7
>
> https://southjersey.craigslist.org/atq/4929839552.html
>
> 73, John Dilks, K2TQN
> Having fun smelling hot rosin and solder again.
> ______________________________________________________________
>
> NJARC mailing list
> Home: http://mailman.qth.net/mailman/listinfo/njarc
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:NJARC at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list:
> http://www.qsl.net/donate.html
>
>
> -----
> No virus found in this message.
> Checked by AVG - www.avg.com
> Version: 2015.0.5751 / Virus Database: 4306/9292 -
> Release Date: 03/13/15
>
>
>
> ______________________________________________________________
>
> NJARC mailing list
> Home: http://mailman.qth.net/mailman/listinfo/njarc
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:NJARC at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list:
> http://www.qsl.net/donate.html
>
>
> ------------------------------------------------------------------------
> ______________________________________________________________
> NJARC mailing list
> Home: http://mailman.qth.net/mailman/listinfo/njarc
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:NJARC at mailman.qth.net
> <mailto:NJARC at mailman.qth.net?>
>
> This list hosted by: http://www.qsl.net
> Please help support this email list:
> http://www.qsl.net/donate.html
>
> ______________________________________________________________
> NJARC mailing
> list
> Home:http://mailman.qth.net/mailman/listinfo/njarc
> Help:
> http://mailman.qth.net/mmfaq.htm
> Post:mailto:NJARC at mailman.qth.net <mailto:NJARC at mailman.qth.net?>
>
> This
> list hosted by:http://www.qsl.net
> Please help support this email list:
> http://www.qsl.net/donate.html
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.qth.net/mailman/private/njarc/attachments/20150313/cc922945/attachment-0001.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: Nixon FET.png
Type: image/png
Size: 31699 bytes
Desc: not available
URL: <http://mailman.qth.net/mailman/private/njarc/attachments/20150313/cc922945/attachment-0001.png>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: image/jpeg
Size: 6885 bytes
Desc: not available
URL: <http://mailman.qth.net/mailman/private/njarc/attachments/20150313/cc922945/attachment-0001.jpe>
More information about the NJARC
mailing list