I have a back burner project that requires a 7-pin plug. I decided to just
make one with a pcb and brass rod of the correct OD for the pins.
My problem is to date i have not been able to find a dimension-ed mechanical
drawing of the 7 and 9 pin tube pin out. it must be recorded somewhere as one
or more standard drawings. Can anyone here suggest a source for or provide an
adequate mechanical drawing of the 7 and 9 pin tube base?
I could make the plug pcbs and provide the plug parts in small quantity or the
drawings and pcb files
From: Mike Langner <[email protected]>
To: 'Glen Zook' <[email protected]>
Cc: [email protected]
Sent: Friday, August 19, 2016 11:03 AM
Subject: Re: [Boatanchors] Has anyone ever cut the glass top off a miniature
tube to re-use the base?
EBay also sells "socket protectors" from time to time -- I have both 7 and 9
pin ones on the miniature sockets on my Hickok tube checker -- and have just
taken EBay delivery of another 9 pin one since the one that's been atop the
tube tester's front panel for 20 some years is beginning not to make good
contact with tubes under test pins anymore. (go figure)
Good luck !
Mike/
K5MGR
_________________________________
Mike Langner
929 Alameda Road NW
Albuquerque, NM 87114-1901
(505) 898-3212 home/home office
(505) 238-8810 cell
[email protected]
-----Original Message-----
From: Boatanchors [mailto:[email protected]] On Behalf Of
Glen Zook via Boatanchors
Sent: Friday, August 19, 2016 8:28 AM
To: Paul Kraemer; Bob Groh; boatanchor; [email protected]
Subject: Re: [Boatanchors] Has anyone ever cut the glass top off a
miniaturetube to re-use the base?
It is also possible to make a plug from a 9-pin or 7-pin molded type miniature
tube socket. Put suitable gauge solid wire in each of the tube pin positions
and then solder the wires in place. Trim the wires to the proper length.
Of course, remove the sheet metal bracket that is used to hold the socket to
the chassis. This makes for a suitable plug that doesn't look "half bad"! I
have done this a number of times and the plugs work very well.
Glen, K9STH
Website: http://k9sth.net
From: Paul Kraemer <[email protected]>
To: Bob Groh <[email protected]>; boatanchor <[email protected]>;
[email protected]
Sent: Friday, August 19, 2016 9:12 AM
Subject: Re: [Boatanchors] Has anyone ever cut the glass top off a
miniaturetube to re-use the base?
Bob
I have done that to obtain 7 pin plug. My poor experience using the "all you
gotta do" glass cutting tricks I went a different way---used the cut off wheel
on a Dremel. For safety I put the tube and cutter in a heavy plastic bag and
that way all the debris was safely bagged and minimized any risk to my eyes if
something went wrong. The cut was nice and clean and the side of the disc
ground it smooth. Soldering to the pins requires scraping them clean and
bright and using a good flux like Rubyfluid. Filling the "plug"
with epoxy after soldering wires get you there.
Also, the real deal plugs do show up on ebay once in a while, 9s more common
than 7s.
Making circuit board plugs is also a possibility but you need to solder
suitable pins to some pretty small pads and then not unsolder them when you
connect to the back ends of the pins. It works but not a quantity producible
solution by any means---unless you just sell the circuit board and loose pins
and let the buyer deal with it.
Too bad those Vector plugs of the 70's are history.
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