[Test-Equipment] Test-Equipment Digest, Vol 120, Issue 10
bonddaleena at aol.com
bonddaleena at aol.com
Mon Apr 21 16:32:18 EDT 2014
Hi, great stuff, and glad to see some activity. A couple of years ago, I bought a basket case Hickok sweep generator.
I was surprised that the 'sweeping' mechanism was mechanical and looked just like the coil and magnet from a speaker.
How times have changed!!!
ron
N4UE
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Subject: Test-Equipment Digest, Vol 120, Issue 10
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Today's Topics:
1. Hickok 288X signal generator (Brian Burns)
2. Re: Hickok 288X signal generator (GandalfG8 at aol.com)
3. Re: Hickok 288X signal generator (Brian Burns)
4. Re: Hickok 288X signal generator (Dale H. Cook)
5. Re: Hickok 288X signal generator (Brian Burns)
----------------------------------------------------------------------
Message: 1
Date: Sun, 20 Apr 2014 12:21:12 -0700
From: "Brian Burns" <brian at lessonsinlutherie.com>
To: "'Discussion of Electronic Test Equipment'"
<test-equipment at mailman.qth.net>
Subject: [Test-Equipment] Hickok 288X signal generator
Message-ID:
<!&!AAAAAAAAAAAYAAAAAAAAAO9WiXwKTRJMveKqmcXf97/[email protected]>
Content-Type: text/plain; charset="us-ascii"
Hello All,
I just acquired an Hickok 288X signal generator thinking that this old timer
would be entirely tube based, and hence within my pay-grade for restoration.
Imagine my surprise when removing it from its cabinet that the first thing I
saw was a printed circuit board with 5 integrated circuits! Four were Texas
Instruments IC's with numbers like:
Z7647
443-7
The pcb was labeled "Heath", contained all the circuitry for the 10, 100,
and 1000 kHz markers, and was clearly a stock part, factory installed.
I'm not sure when the unit was made, but the IC's are surely around 50 years
old, and I would guess are no longer functioning, and that replacements are
non-existent.
All of which leads me to the question of what to do with the old girl. As it
stands it's just a box of parts for me, but I hate to tear into a well made
piece of gear that might be restorable.
As the man wired home on arriving for the first time in Venice:
"Streets are full of water-please advise"
Cheers,
Brian
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Message: 2
Date: Mon, 21 Apr 2014 05:41:58 -0400 (EDT)
From: GandalfG8 at aol.com
To: test-equipment at mailman.qth.net
Subject: Re: [Test-Equipment] Hickok 288X signal generator
Message-ID: <272cc.760630c5.408641e6 at aol.com>
Content-Type: text/plain; charset="US-ASCII"
Hi Brian
I've never come across the 288X so took a look around on Google and found
the manual on BAMA.
It's a very nice looking unit, but unless production continued for a very
long while I doubt that marker board was really factory installed.
The manual I found was dated 1946 and shows the 288X to be very much
entirely tube based, not too surprising at that time:-), and your marker PC
being marked "Heath" suggests it might well have been a Heathkit module added
later.
It's also possible that at least one of those IC numbers you've quoted
could be a date code from 1976.
If you haven't already found the manual I'd suggest taking a look.
Even if the marker board is a later addition it seems like it could be a
useful add on, and if the rest of your unit does match the manual then it
shouldn't be any less restorable than you'd expected to start with.
Regards
Nigel
GM8PZR
In a message dated 20/04/2014 20:21:49 GMT Daylight Time,
brian at lessonsinlutherie.com writes:
Hello All,
I just acquired an Hickok 288X signal generator thinking that this old
timer
would be entirely tube based, and hence within my pay-grade for
restoration.
Imagine my surprise when removing it from its cabinet that the first thing
I
saw was a printed circuit board with 5 integrated circuits! Four were Texas
Instruments IC's with numbers like:
Z7647
443-7
The pcb was labeled "Heath", contained all the circuitry for the 10, 100,
and 1000 kHz markers, and was clearly a stock part, factory installed.
I'm not sure when the unit was made, but the IC's are surely around 50
years
old, and I would guess are no longer functioning, and that replacements are
non-existent.
All of which leads me to the question of what to do with the old girl. As
it
stands it's just a box of parts for me, but I hate to tear into a well made
piece of gear that might be restorable.
As the man wired home on arriving for the first time in Venice:
"Streets are full of water-please advise"
Cheers,
Brian
---
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protection is active.
http://www.avast.com
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Message: 3
Date: Mon, 21 Apr 2014 08:02:31 -0700
From: "Brian Burns" <brian at lessonsinlutherie.com>
To: "'Discussion of Electronic Test Equipment'"
<test-equipment at mailman.qth.net>
Subject: Re: [Test-Equipment] Hickok 288X signal generator
Message-ID:
<!&!AAAAAAAAAAAYAAAAAAAAAO9WiXwKTRJMveKqmcXf97/[email protected]>
Content-Type: text/plain; charset="us-ascii"
Hello Nigel,
Thanks very much for your thoughtful reply!
The board looked so professionally installed that I assumed that it was put
in by the factory. I'll see if I can determine the indistinct numbers on it,
and look for information amongst Heath products. I'm also assuming that
after all this time it is non-functional. I should keep in mind what someone
once told me, that "assume" makes an ASS out of U and ME (;->)...
Google turned up a couple of people that have done restorations, and I'm
trying to contact them to get the benefit of their experience.
By the way, since my wife of 47 years is a MacFarland (highlander), and I'm
a Burns (lowlander) we have determined that is likely the cause of all our
conflicts. We have read all of Walter Scott's novels, and having been
subjected to Ivanhoe in high school, I was very much surprised to find that
he has a great sense of humor! At the end of his border conflicts novels you
can't really tell which side he is on, which is a great tribute to his skill
as a writer.
Cheers,
Brian
Hi Brian
I've never come across the 288X so took a look around on Google and found
the manual on BAMA.
It's a very nice looking unit, but unless production continued for a very
long while I doubt that marker board was really factory installed.
The manual I found was dated 1946 and shows the 288X to be very much
entirely tube based, not too surprising at that time:-), and your marker PC
being marked "Heath" suggests it might well have been a Heathkit module
added later.
It's also possible that at least one of those IC numbers you've quoted could
be a date code from 1976.
If you haven't already found the manual I'd suggest taking a look.
Even if the marker board is a later addition it seems like it could be a
useful add on, and if the rest of your unit does match the manual then it
shouldn't be any less restorable than you'd expected to start with.
Regards
Nigel
GM8PZR
In a message dated 20/04/2014 20:21:49 GMT Daylight Time,
brian at lessonsinlutherie.com writes:
Hello All,
I just acquired an Hickok 288X signal generator thinking that this old
timer would be entirely tube based, and hence within my pay-grade for
restoration.
Imagine my surprise when removing it from its cabinet that the first thing
I saw was a printed circuit board with 5 integrated circuits! Four were
Texas Instruments IC's with numbers like:
Z7647
443-7
The pcb was labeled "Heath", contained all the circuitry for the 10, 100,
and 1000 kHz markers, and was clearly a stock part, factory installed.
I'm not sure when the unit was made, but the IC's are surely around 50
years old, and I would guess are no longer functioning, and that
replacements are non-existent.
All of which leads me to the question of what to do with the old girl. As
it stands it's just a box of parts for me, but I hate to tear into a well
made piece of gear that might be restorable.
As the man wired home on arriving for the first time in Venice:
"Streets are full of water-please advise"
Cheers,
Brian
---
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Message: 4
Date: Mon, 21 Apr 2014 14:59:47 -0400
From: "Dale H. Cook" <radiotest at plymouthcolony.net>
To: test-equipment at mailman.qth.net
Subject: Re: [Test-Equipment] Hickok 288X signal generator
Message-ID: <7.0.1.0.2.20140421145336.03d7ebb8 at plymouthcolony.net>
Content-Type: text/plain; charset="us-ascii"
At 11:02 AM 4/21/2014, Brian Burns wrote:
>Google turned up a couple of people that have done restorations ...
Brian -
A friend has restored a couple of Hickok signal generators of that series, but I
am not sure if they are 288X or a similar model. Drop him a line and tell him
that Dale Cook referred you. His name is Ken Wright, and his email is wklw at
cox dot net.
Dale H. Cook, GR / HP Collector, Roanoke/Lynchburg, VA
http://plymouthcolony.net/starcity/radios/index.html
------------------------------
Message: 5
Date: Mon, 21 Apr 2014 13:08:12 -0700
From: "Brian Burns" <brian at lessonsinlutherie.com>
To: "'Discussion of Electronic Test Equipment'"
<test-equipment at mailman.qth.net>
Subject: Re: [Test-Equipment] Hickok 288X signal generator
Message-ID:
<!&!AAAAAAAAAAAYAAAAAAAAAO9WiXwKTRJMveKqmcXf97/[email protected]>
Content-Type: text/plain; charset="us-ascii"
Hello Dale,
Thanks very much for the referral! I'll email him right away (:->)...
Cheers,
Brian
-----Original Message-----
From: Test-Equipment [mailto:test-equipment-bounces at mailman.qth.net] On
Behalf Of Dale H. Cook
Sent: Monday, April 21, 2014 12:00 PM
To: test-equipment at mailman.qth.net
Subject: Re: [Test-Equipment] Hickok 288X signal generator
At 11:02 AM 4/21/2014, Brian Burns wrote:
>Google turned up a couple of people that have done restorations ...
Brian -
A friend has restored a couple of Hickok signal generators of that series,
but I am not sure if they are 288X or a similar model. Drop him a line and
tell him that Dale Cook referred you. His name is Ken Wright, and his email
is wklw at cox dot net.
Dale H. Cook, GR / HP Collector, Roanoke/Lynchburg, VA
http://plymouthcolony.net/starcity/radios/index.html
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