25 Apr
1998
25 Apr
'98
3:40 p.m.
Ok, since I intend to use this thing to work on computer related gear older
than 10 years old (my 083 card sorter for example), I'm proclaiming this
inquiry off-limits for random flamage! B^}
Does anyone out there have info (like the tube/switch charts) for an EICO
Model 635 portable tube tester? I've picked up one that is in very good
shape, but is otherwise useless without the charts for switch settings.
-jim
---
jimw(a)agora.rdrop.com
The Computer Garage - http://www.rdrop.com/~jimw
Computer Garage Fax - (503) 646-0174
25 Apr
25 Apr
4:45 p.m.
Ok, since I intend to use this thing to work on
computer related gear older
than 10 years old (my 083 card sorter for example), I'm proclaiming this
inquiry off-limits for random flamage! B^}
EEEEEEEWWWWW! Eico!
Use a real tube tester (TV-7*/U or the like)!
Does anyone out there have info (like the tube/switch
charts) for an EICO
Model 635 portable tube tester? I've picked up one that is in very good
shape, but is otherwise useless without the charts for switch settings.
What tubes do you need to test? I could post the numbers to the
Boatanchors list, and someone will probably have the settings on hand.
William Donzelli
william(a)ans.net
10:47 p.m.
William Donzelli wrote:
You can check with AG Tannenbaum about the possibiity of a manual or copy, or
check the links to other manual sellers for test equipment. They have a web page
at http://www.agtannenbaum.com/
Linda Perkins at the Manuals Merchant can usually get what you need as well as Ed
Matsuda, both in San Diego.
--------------------------------------------------------------------
Russ Blakeman
RB Custom Services / Rt. 1 Box 62E / Harned, KY USA 40144
Phone: (502) 756-1749 Data/Fax:(502) 756-6991
Email: rhblake(a)bbtel.com or rhblake(a)bigfoot.com
Website: http://members.tripod.com/~RHBLAKE/
ICQ UIN #1714857
AOL Instant Messenger "RHBLAKEMAN"
* Parts/Service/Upgrades and more for MOST Computers*
--------------------------------------------------------------------
Use a real tube
tester (TV-7*/U or the like)!
Does anyone out there have info (like the
tube/switch charts) for an EICO
Model 635 portable tube tester? I've picked up one that is in very good
shape, but is otherwise useless without the charts for switch settings.
What tubes do you need to test? I could post the numbers to the
Boatanchors list, and someone will probably have the settings on hand. 
26 Apr
26 Apr
1:25 a.m.
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7:13 a.m.
You mean an AVO Mk4 Valve Characteristic Meter, surely
:-). A very nice
instrument that'll test just about any valve with 9 pins of fewer, and
will do proper mutual conductance tests.
If it can do the job, sure! Of course, it probably only has sockets for
those weird British valves with the "interesting" bases (like the
almost-Octal socket)!
Or, if you want an _interesting_ instrument, look at
the Mullard High
Speed Valve Tester. It's controlled by (special) punched cards. They have
a 14*10 matrix of holes which allow contacts to make in the card reader
assembly. Said contacts link the appropriate pins of the valveholder to
the right points in the circuit, select the appropriate transformer taps
for the heater voltage and set the other electrode voltages using
resistive ladder DACs (see, this is almost on-topic...). Pity it's only
an emission tester.
Hickock made one like that called a "Cardmatic". Find the card, throw it
in the slot, the thing makes a loud CLUNK, and you are all set to go.
William Donzelli
william(a)ans.net
10:10 a.m.
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25 Apr
25 Apr
7:33 p.m.
On 25 Apr 98 at 21:45, William Donzelli wrote:
Why does this remind me of a PC newsgroup post ? : ^ ))
EICO was considered higher quality than Heath Kits audio gear and made
excellent test equipment for the home-tech market in the tube era. Many
old-tube enthusiasts still use them . NOS tubes go at a higher premium than the
only available new Sovtech or defective Chinese ones cause they're better
quality. Why not use equipment extant to when they were produced ? And will
any of the logic analysers, for example, of the present era still be functional
in the year 2040 ?
Even more off-topic; but many high-end audio people are spending
big bucks for tube-emulators to breathe the life into their digital CDs.,
that I get, matter of course, on my 45 year old EICO tube amps.
I
have a model 625 I use for old audio equipment. If it's anything like my
m.625 they're a neat little machine. They do the job. I don't know if the
settings are the same for the 635. Ask on rec.audio.tubes and/or rec.audio and
someone should know. If so I'll see if I can get a scan of my sheets and send
them on to you.
Ok, since I
intend to use this thing to work on computer related gear older
than 10 years old (my 083 card sorter for example), I'm proclaiming this
inquiry off-limits for random flamage! B^}
EEEEEEEWWWWW! Eico!
Use a real tube tester (TV-7*/U or the like)!
Does anyone
out there have info (like the tube/switch charts) for an EICO
Model 635 portable tube tester? I've picked up one that is in very good
shape, but is otherwise useless without the charts for switch settings.
What tubes do you need to test? I could post the
numbers to the
Boatanchors list, and someone will probably have the settings on hand.
^^^^^^^^^^^^^
Bill I'm shocked. Hope that list name was chosen in derision of
the throw-away
generation. : ^ ))
William Donzelli
william(a)ans.net
ciao larry
lwalker(a)interlog.com
11:56 p.m.
New subject: MINDSET
Does anybody have a MINDSET computer? I vaguely recall these as the first
multimedia PC from the early 80's. I just found a stereo module for one,
and now I'm in search of the rest of one :-)
Also found this weekend, a Roland CM-32L "LA SOUND MODULE" MIDI thing from
the late 80's (I'm still looking for an ARP 2600 synth, BTW), and a
pristine copy of the Clocksin and Mellish Prolog book. I'm not having
much luck finding complete "interesting" systems, but I also found an A/C
adapter for an EO :-)
-- Doug
26 Apr
26 Apr
7:05 a.m.
EICO was considered higher quality than Heath Kits
audio gear and made
excellent test equipment for the home-tech market in the tube era. Many
old-tube enthusiasts still use them .
Yes, better than Heathkits, but these days even the high quality stuff is
cheap and available (HP, Tektronix, Boonton, General-Radio, etc.). Of
course, the one place where you will have to spend money on old test
equipment _is_ that of tube testers, mostly due to the audiophiles. If you
can get a good old Hickok for less than $150, you should jump on it.
Bill I'm shocked. Hope that list name was chosen
in derision of the throw-away
generation. : ^ ))
The name came about by all of the smartass hams at the hamfests that would
watch some of us lug 90 pound tube radios back to our cars ("hey, where
did you get the boatanchor!"), while they had whole Kenwood stations that
would fit in a fairly small box. Of course, they would really start
laughing when we would have to go back to get the 40 pound power supplies.
Anyway, I really wonder how good most (all?) tube testers would be for
digital logic applications. All of the good testers I can think of do a
fine job on emmision, shorts, and gas, but the gm test generally is fairly
dumb - a steady 60 Hz (sometimes 1 kHz) fed into the grid, and look at the
output. That is exactly what logic circuits do not do.
The Tek tube curve tracer (model 577 or 565 - help! I can not remember)
would be very good, but you would have to sell your Imsai and Altair to
pay for one.
William Donzelli
william(a)ans.net
10:04 a.m.
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27 Apr
27 Apr
1:17 a.m.
On 26 Apr 98 at 12:05, William Donzelli wrote:
People who view me and my puters fixations as stange anyway have thrown the
doorstop thing at me many times. A more novel suggestion has been using my
my 8580 full tower case as a coffee table. I considered it. My 3 5meg 8'' TRS
HDDs would also make a good base for a futon . I have a Qume daisy wheel
printer PS that will dim the lights in the neighborhood. ; ^ 0
EICO was
considered higher quality than Heath Kits audio gear and made
excellent test equipment for the home-tech market in the tube era. Many
old-tube enthusiasts still use them .
Yes, better than Heathkits, but these days even the high quality stuff is
cheap and available (HP, Tektronix, Boonton, General-Radio, etc.). Of
course, the one place where you will have to spend money on old test
equipment _is_ that of tube testers, mostly due to the audiophiles. If you
can get a good old Hickok for less than $150, you should jump on it.
Bill I'm shocked. Hope that list name was
chosen in derision of the throw-away
generation. : ^ ))
The name came about by all of the smartass hams at the hamfests that would
watch some of us lug 90 pound tube radios back to our cars ("hey, where
did you get the boatanchor!"), while they had whole Kenwood stations that
would fit in a fairly small box. Of course, they would really start
laughing when we would have to go back to get the 40 pound power supplies.
Anyway, I really wonder how good most (all?) tube
testers would be for
digital logic applications. All of the good testers I can think of do a
fine job on emmision, shorts, and gas, but the gm test generally is fairly
dumb - a steady 60 Hz (sometimes 1 kHz) fed into the grid, and look at the
output. That is exactly what logic circuits do not do.
Because of the inexactitude of tube output it would almost be necesary to
test each one in circuit and then tweak I would think.
The Tek tube curve tracer (model 577 or 565 - help! I
can not remember)
would be very good, but you would have to sell your Imsai and Altair to
pay for one.
It might be cheaper to buy a used Cray. :^))
William Donzelli
william(a)ans.net
ciao larry
lwalker(a)interlog.com
5:24 a.m.
At 04:33 26-04-98 +0000, lwalker(a)interlog.com (Larry) wrote:
On 25 Apr 98 at 21:45, William Donzelli wrote:
> > Ok, since I intend to use this thing to work on computer related gear
older
> > than 10 years old (my 083 card sorter for
example), I'm proclaiming this
> > inquiry off-limits for random flamage! B^}
-- snip --
I have a model 625 I use for old audio equipment. If
it's anything like my
m.625 they're a neat little machine. They do the job. I don't know if the
settings are the same for the 635. Ask on rec.audio.tubes and/or rec.audio
and
someone should know. If so I'll see if I can get a
scan of my sheets and send
them on to you.
throw-away
What tubes do you need to test? I could post the
numbers to the
Boatanchors list, and someone will probably have the settings on hand.
^^^^^^^^^^^^^
Bill I'm shocked. Hope that list name was chosen in derision of
the generation. : ^ ))
No, a 'Boatanchor' is an affectionate reference to (primarily) older,
vacuum tube (valve) operated radio receivers and transmitters.
Tube operated test equipment and other 'tubed' items such as the mid-50's
IBM 704-series computers that many of us have laying around [ ;-) ] are
also usually referred to as boatanchors. The 704 I lusted after at the
Deutsches Museum in Munich a couple of years ago could certainly anchor a
boat not to mention sink it ;) It sat not too far from a Cray-1, IBM 360
console, a Boroughs of some sort (IIRC) plus other big iron and examples
of Konrad Zuse's Z-series from the mid-to-late 40's. Travelers/ Europeans:
you gotta see this if you possibly can!
William: sounds like you have eclectic collecting interests like myself and
maybe a couple of others in ClassicComp as I've seen evidence of you in the
antique automobile and antique radio-type newsgroups. Got any room left in
your house???? ;)
By the way, the TV-7*/U is a military nomenclature referencing a military
surplus tube tester. This type is generaly revered to be the optimum tube
tester that one should have in his/her shop for most accurately testing
tubes. Anybody got one available? I'm actually looking for a good unit
(needed to test the tubes in my own 704 --NOT!.)
-- --
=======================================================
Christian R. Fandt, Electronic/Electrical Historian
31 Houston Avenue, WE Phone: +716-488-1722 -Home
Jamestown, New York +716-661-1832 -Office
14701-2627 USA Fax: +716-661-1888 -Office fax
email: cfandt(a)servtech.com
Member of Antique Wireless Association
URL: http://www.ggw.org/freenet/a/awa/
William Donzelli
william(a)ans.net
ciao larry
lwalker(a)interlog.com
6:46 a.m.
On Mon, 27 Apr 1998, Christian Fandt wrote:
also usually referred to as boatanchors. The 704 I
lusted after at the
Deutsches Museum in Munich a couple of years ago could certainly anchor a
boat not to mention sink it ;) It sat not too far from a Cray-1, IBM 360
console, a Boroughs of some sort (IIRC) plus other big iron and examples
of Konrad Zuse's Z-series from the mid-to-late 40's. Travelers/ Europeans:
you gotta see this if you possibly can!
I have a few photos of questionable quality and poor detail from this
section of the museum. At the time I was there, though, I was more
interested in the musical instruments and wasted a good 18 to 24 exposures
there.
If I ever get down to th ebottom of the pile and find I've still got two
hands and some vestigal eyes, I'll scan the attmittedly unremarkable
photos I took while I was there. I took them before I was into classic
computers and they were taken more because I felt some sort of obligation
and thus have long since forgotten what most of the pictures are of. I'm
sure most of you will be able to recognize them straight away, though. (:
ok
r.
9588
days inactive
9590
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12 comments
8 participants
participants (8)
-
ard＠p850ug1.demon.co.uk -
cfandt＠servtech.com -
jimw＠agora.rdrop.com -
lwalker＠mail.interlog.com -
red＠bears.org -
rhblake＠bbtel.com -
william＠ans.net -
yowza＠yowza.com