[Milsurplus] Milsurplus Digest, Vol 193, Issue 15
Steve Saslow
k7ew at hotmail.com
Thu May 7 13:38:21 EDT 2020
re Carbon composites go bye bye: I have about a number 10 coffee canfull. When I need a certain value, I use my old Simpson 261, and measure for the desired values, choosing from a handful out of that container which read or color code a lower value - - assuming it has actually shifted upwards... -Steve k7ew
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From: milsurplus-bounces at mailman.qth.net <milsurplus-bounces at mailman.qth.net> on behalf of milsurplus-request at mailman.qth.net <milsurplus-request at mailman.qth.net>
Sent: Wednesday, May 6, 2020 1:52 PM
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Subject: Milsurplus Digest, Vol 193, Issue 15
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Today's Topics:
1. Carbon Composites Go Bye Bye (David Stinson)
2. Re: Carbon Composites Go Bye Bye (Richard)
3. Re: [Boatanchors] Carbon Composites Go Bye Bye (Mark K3MSB)
4. Unk circuit board from ? (Hubert Miller)
----------------------------------------------------------------------
Message: 1
Date: Wed, 6 May 2020 07:47:51 -0500
From: David Stinson <arc5 at ix.netcom.com>
To: "milsurplus at mailman" <milsurplus at mailman.qth.net>,
"Boatanchors at mailman" <boatanchors at mailman.qth.net>
Subject: [Milsurplus] Carbon Composites Go Bye Bye
Message-ID: <60ff6618-e2ab-cd13-cb44-1b21009adf4e at ix.netcom.com>
Content-Type: text/plain; charset=utf-8; format=flowed
Mentioned this once, finally pulled the trigger on it.
I have purged my 50-year junk-box of carbon-comp resistors,
including NOS, save only obvious "antique" parts from
the 20s and 30s and "premium grade" precisions.
Over a gallon of them. 90%? have drifted, some of them
substantially, and it just isn't worth my precious and
rapidly-dwindling time to try and cherry-pick those still good.
Will be using mostly the current "flame-proof" in
future projects.?? I'm curious if anyone else has considered
"resistor retirement?"
73 Dave AB5S
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Message: 2
Date: Wed, 6 May 2020 10:46:36 -0400
From: Richard <brunneraa1p at comcast.net>
To: milsurplus at mailman.qth.net
Subject: Re: [Milsurplus] Carbon Composites Go Bye Bye
Message-ID: <5be43816-3734-b4eb-8d2e-9a8e7f766668 at comcast.net>
Content-Type: text/plain; charset=utf-8; format=flowed
Yes, me too.? I only save the low resistance ones which are useful for
suppressing parasitics as "grid stopping resistors," etc.
Richard, AA1P
On 5/6/20 8:47 AM, David Stinson wrote:
> Mentioned this once, finally pulled the trigger on it.
> I have purged my 50-year junk-box of carbon-comp resistors,
> including NOS, save only obvious "antique" parts from
> the 20s and 30s and "premium grade" precisions.
> Over a gallon of them. 90%? have drifted, some of them
> substantially, and it just isn't worth my precious and
> rapidly-dwindling time to try and cherry-pick those still good.
> Will be using mostly the current "flame-proof" in
> future projects.?? I'm curious if anyone else has considered
> "resistor retirement?"
>
> 73 Dave AB5S
>
>
------------------------------
Message: 3
Date: Wed, 6 May 2020 12:25:45 -0400
From: Mark K3MSB <mark.k3msb at gmail.com>
To: David Stinson <arc5 at ix.netcom.com>
Cc: "Boatanchors at mailman" <boatanchors at mailman.qth.net>,
"milsurplus at mailman" <milsurplus at mailman.qth.net>
Subject: Re: [Milsurplus] [Boatanchors] Carbon Composites Go Bye Bye
Message-ID:
<CABdVoaBj7zAJaHx=nLx5g0iQFeEQkaL6zSD60hc9pe2dn1+52w at mail.gmail.com>
Content-Type: text/plain; charset="utf-8"
I have 2 or 3 medium rate shipping boxes full of them. Being pretty color
blind I can't even cherry pick. I've often thought of just letting them go
for shipping.
Mark K3MSB
On Wed, May 6, 2020, 8:48 AM David Stinson <arc5 at ix.netcom.com> wrote:
> Mentioned this once, finally pulled the trigger on it.
> I have purged my 50-year junk-box of carbon-comp resistors,
> including NOS, save only obvious "antique" parts from
> the 20s and 30s and "premium grade" precisions.
> Over a gallon of them. 90% have drifted, some of them
> substantially, and it just isn't worth my precious and
> rapidly-dwindling time to try and cherry-pick those still good.
> Will be using mostly the current "flame-proof" in
> future projects. I'm curious if anyone else has considered
> "resistor retirement?"
>
> 73 Dave AB5S
>
>
> --
> This email has been checked for viruses by Avast antivirus software.
> https://www.avast.com/antivirus
>
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Message: 4
Date: Wed, 6 May 2020 20:52:12 +0000
From: Hubert Miller <Kargo_cult at msn.com>
To: Military Surplus Mail List <Milsurplus at mailman.qth.net>,
Army-Radios <main+owner at Army-Radios.groups.io>
Cc: Kent Stevens <stevenskent11 at gmail.com>
Subject: [Milsurplus] Unk circuit board from ?
Message-ID:
<MWHPR22MB02696F83727911D7B2A99E5BE4A40 at MWHPR22MB0269.namprd22.prod.outlook.com>
Content-Type: text/plain; charset="us-ascii"
Anyone have any idea what this is from: circuit board, approx 3 x 4.5 inches,
with 6 transistors Ge 2N2635, 16 diodes, about 20 resistors and 7 disc caps.
Label on board,
NAND ELEMENT GNA1-1 515593B RAYTHEON COMPUTER
thanks-
Hue Miller
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