EAI TR-10 Patch Plugs

steven at malikoff.com steven at malikoff.com
Sun Dec 20 16:23:21 CST 2015

---------------------------- Original Message ----------------------------
Subject: RE: EAI TR-10 Patch Plugs
From:    "Dave Wade" <dave.g4ugm at gmail.com>
Date:    Mon, December 21, 2015 3:46 am
To:      "'General Discussion: On-Topic and Off-Topic Posts'" <cctalk at classiccmp.org>

>> -----Original Message-----
>> From: cctalk [mailto:cctalk-bounces at classiccmp.org] On Behalf Of
>> steven at malikoff.com
>> Sent: 20 December 2015 02:10
>> To: General Discussion: On-Topic Posts <cctech at classiccmp.org>
>> Subject: Re: EAI TR-10 Patch Plugs
>> ---------------------------- Original Message ----------------------------
>> Subject: EAI TR-10 Patch Plugs
>> From:    "Dave Wade" <dave.g4ugm at gmail.com>
>> Date:    Sun, December 20, 2015 6:41 am
>> To:      "'General Discussion: On-Topic Posts'" <cctech at classiccmp.org>
>> --------------------------------------------------------------------------
>> > Folks,
>> >
>> > I own an EAI TR-10 analog computer which sadly came without any patch
>> > cables and accessories. Normally this wouldn't be a problem, BUT the
>> > TR-10 comes with special resistive plugs which go at the ends of the
>> > patch leads. These have a 4mm plug and socket with a 10k or 100k
>> > resistor in between.  I can't figure out a way to easily fabricate
>> > replacements. I can easily obtain 4mm plugs and sockets, and solder a
>> > resistor between them, but when I try and mount them on a short rigid
>> > tube all my efforts fail. The plug and socket need to be twisted in opposite
>> directions and any soldered joint just fails.
>> >
>> > Any usggestions?
>> >
>> > Does any one have some of these and if so how are they constructed?
>> >
>> > Dave Wade
>> > G4UGM
>> >
>> Would you be able to put up some photos of what you have, an original, and
>> with a ruler included for scale?
> I don't have anything! The last picture on this page shows the items:-
> http://www.analogmuseum.org/english/collection/eai/tr10/
> and the plugs on these are standard "4mm" wander plugs, so the part containing the resistor must be about 1" to 1.5" long. There is a 4mm socket in the end and either a 1k or 10k resistor.
> Dave

Ah, ok, now I get it. Could you use two of the banana jack barrels, cut in half (machine them would be better)
so that they can be contrarotated, then superglue or solvent glue the seam when tightened against eachother?


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