22 Feb
2018
22 Feb
'18
12:08 p.m.
I'm about to acquire a couple of 1980s-vintage military surplus AN/UGC-137A terminals
(i.e., glass TTYs with some local message preparation and storage capabilities) which have
a bubble memory subsystem. They use plug-in cartridges containing 256 kbytes of storage in
the form of two Intel 7110 1 Mbit bubble memory chips and their 7242 formatter/sense
amplifiers.
One of the cartridges contains the one and only copy of the terminals' firmware, which
I believe they need to load up at each reboot. Naturally, extracting the contents of that
irreplaceable cartridge for archival, and potential future emulation, is going to be a
very high priority for me. I have a few different approaches in mind for accomplishing
that. One approach would be to remove the two memory devices from the critical cartridge
in order to dump their contents in an independent bubble memory subsystem.
With that in mind, I'd like to get my hands on a working Intel 7110 bubble memory
subsystem, or the parts to build one myself (i.e., a complete
7110/7220/7230/7242/7250/7254 chipset that I could make a board around).
Might anybody here have what I need available for sale or trade? I might be able to use
some arbitrary old computer or other device that has a subsystem based around the Intel
7110, or a development kit such as the Intel BPK-72, or a chipset to make my own board.
If I can't acquire or make the hardware to dump the memory chips outside of their
native system, then I think my next option would be to passively snoop the host bus
interface of the Intel 7220 controller I expect to find inside the terminals as they
perform their initial firmware load, so that I can reconstruct the cartridge contents from
the trace data.
The terminals were made by the Librascope division of Singer, and brochures can be found
here:
http://www.librascopememories.com/Librascope_Memories/Product_Literature_fi…
http://www.librascopememories.com/Librascope_Memories/Product_Literature_fi…
http://www.librascopememories.com/Librascope_Memories/Product_Literature_fi…
I already have the critical cartridge in hand, and I posted some pictures of it on
Twitter:
https://twitter.com/nf6x/status/964578291767173120
--
Mark J. Blair, NF6X <nf6x at nf6x.net>
http://www.nf6x.net/
22 Feb
22 Feb
12:29 p.m.
Doing a paper napkin design, should be pretty easy to build a bubble
emulator in the same size
On Thu, Feb 22, 2018 at 12:08 PM, Mark J. Blair via cctalk <
cctalk at classiccmp.org> wrote:
I'm about to acquire a couple of 1980s-vintage
military surplus
AN/UGC-137A terminals (i.e., glass TTYs with some local message preparation
and storage capabilities) which have a bubble memory subsystem. They use
plug-in cartridges containing 256 kbytes of storage in the form of two
Intel 7110 1 Mbit bubble memory chips and their 7242 formatter/sense
amplifiers.
One of the cartridges contains the one and only copy of the terminals'
firmware, which I believe they need to load up at each reboot. Naturally,
extracting the contents of that irreplaceable cartridge for archival, and
potential future emulation, is going to be a very high priority for me. I
have a few different approaches in mind for accomplishing that. One
approach would be to remove the two memory devices from the critical
cartridge in order to dump their contents in an independent bubble memory
subsystem.
With that in mind, I'd like to get my hands on a working Intel 7110 bubble
memory subsystem, or the parts to build one myself (i.e., a complete
7110/7220/7230/7242/7250/7254 chipset that I could make a board around).
Might anybody here have what I need available for sale or trade? I might
be able to use some arbitrary old computer or other device that has a
subsystem based around the Intel 7110, or a development kit such as the
Intel BPK-72, or a chipset to make my own board.
If I can't acquire or make the hardware to dump the memory chips outside
of their native system, then I think my next option would be to passively
snoop the host bus interface of the Intel 7220 controller I expect to find
inside the terminals as they perform their initial firmware load, so that I
can reconstruct the cartridge contents from the trace data.
The terminals were made by the Librascope division of Singer, and
brochures can be found here:
http://www.librascopememories.com/Librascope_Memories/
Product_Literature_files/Communications%20Terminal.pdf
http://www.librascopememories.com/Librascope_Memories/
Product_Literature_files/SST.pdf
http://www.librascopememories.com/Librascope_Memories/
Product_Literature_files/Bubble%20Memory%20Cartridge.pdf
I already have the critical cartridge in hand, and I posted some pictures
of it on Twitter:
https://twitter.com/nf6x/status/964578291767173120
--
Mark J. Blair, NF6X <nf6x at nf6x.net>
http://www.nf6x.net/
1:23 p.m.
On Feb 22, 2018, at 12:29 PM, Pete Lancashire <pete
at petelancashire.com> wrote:
Doing a paper napkin design, should be pretty easy to build a bubble emulator in the same
size
Yes, and I plan to do just that (assuming I ever actually get around to it)! But the first
priority will be archiving the firmware that's on that cartridge (or not... it would
really stink if the bits have already evaporated!).
--
Mark J. Blair, NF6X <nf6x at nf6x.net>
http://www.nf6x.net/
1:23 p.m.
Do not remove the chip from the bias magnets. All will be lost if you do.
The Nicolet 3091 used a bubble memory but I don't know it it was the Intel or other
manufacture.
Dwight
________________________________
From: cctalk <cctalk-bounces at classiccmp.org> on behalf of Pete Lancashire via
cctalk <cctalk at classiccmp.org>
Sent: Thursday, February 22, 2018 12:29:47 PM
To: Mark J. Blair; General Discussion: On-Topic and Off-Topic Posts
Subject: Re: WTB Intel 7110 Bubble Memory Subsystem or Chipset
Doing a paper napkin design, should be pretty easy to build a bubble
emulator in the same size
On Thu, Feb 22, 2018 at 12:08 PM, Mark J. Blair via cctalk <
cctalk at classiccmp.org> wrote:
I'm about to acquire a couple of 1980s-vintage
military surplus
AN/UGC-137A terminals (i.e., glass TTYs with some local message preparation
and storage capabilities) which have a bubble memory subsystem. They use
plug-in cartridges containing 256 kbytes of storage in the form of two
Intel 7110 1 Mbit bubble memory chips and their 7242 formatter/sense
amplifiers.
One of the cartridges contains the one and only copy of the terminals'
firmware, which I believe they need to load up at each reboot. Naturally,
extracting the contents of that irreplaceable cartridge for archival, and
potential future emulation, is going to be a very high priority for me. I
have a few different approaches in mind for accomplishing that. One
approach would be to remove the two memory devices from the critical
cartridge in order to dump their contents in an independent bubble memory
subsystem.
With that in mind, I'd like to get my hands on a working Intel 7110 bubble
memory subsystem, or the parts to build one myself (i.e., a complete
7110/7220/7230/7242/7250/7254 chipset that I could make a board around).
Might anybody here have what I need available for sale or trade? I might
be able to use some arbitrary old computer or other device that has a
subsystem based around the Intel 7110, or a development kit such as the
Intel BPK-72, or a chipset to make my own board.
If I can't acquire or make the hardware to dump the memory chips outside
of their native system, then I think my next option would be to passively
snoop the host bus interface of the Intel 7220 controller I expect to find
inside the terminals as they perform their initial firmware load, so that I
can reconstruct the cartridge contents from the trace data.
The terminals were made by the Librascope division of Singer, and
brochures can be found here:
http://www.librascopememories.com/Librascope_Memories/
Product_Literature_files/Communications%20Terminal.pdf
http://www.librascopememories.com/Librascope_Memories/
Product_Literature_files/SST.pdf
http://www.librascopememories.com/Librascope_Memories/
Product_Literature_files/Bubble%20Memory%20Cartridge.pdf
I already have the critical cartridge in hand, and I posted some pictures
of it on Twitter:
https://twitter.com/nf6x/status/964578291767173120
--
Mark J. Blair, NF6X <nf6x at nf6x.net>
http://www.nf6x.net/
1:28 p.m.
On Feb 22, 2018, at 1:23 PM, dwight via cctalk
<cctalk at classiccmp.org> wrote:
Do not remove the chip from the bias magnets. All will be lost if you do.
Is my understanding correct that removing the entire 7110 module as a unit (whether
socketed or soldered in) should be somewhat safe, but any attempt to disassemble the
module would likely disturb the bias field and destroy the data?
--
Mark J. Blair, NF6X <nf6x at nf6x.net>
http://www.nf6x.net/
1:36 p.m.
The bias field keeps the domains from becoming random. It is interesting that I was
reading about making newer versions of bubble like memory with thin films. They are
expecting something like 10 times the data density that current spinning media can have
and faster access with no moving parts.
Dwight
________________________________
From: cctalk <cctalk-bounces at classiccmp.org> on behalf of Mark J. Blair via
cctalk <cctalk at classiccmp.org>
Sent: Thursday, February 22, 2018 1:28:52 PM
To: General Discussion: On-Topic and Off-Topic Posts
Subject: Re: WTB Intel 7110 Bubble Memory Subsystem or Chipset
On Feb 22, 2018, at 1:23 PM, dwight via cctalk
<cctalk at classiccmp.org> wrote:
Do not remove the chip from the bias magnets. All will be lost if you do.
Is my understanding correct that removing the entire 7110 module as a unit (whether
socketed or soldered in) should be somewhat safe, but any attempt to disassemble the
module would likely disturb the bias field and destroy the data?
--
Mark J. Blair, NF6X <nf6x at nf6x.net>
http://www.nf6x.net/
2:11 p.m.
On Thu, Feb 22, 2018 at 2:28 PM, Mark J. Blair via cctalk <
cctalk at classiccmp.org> wrote:
Is my understanding correct that removing the entire
7110 module as a unit
(whether socketed or soldered in) should be somewhat safe, but any attempt
to disassemble the module would likely disturb the bias field and destroy
the data?
Yes, you can safely remove the entire 7110 without altering the data
within, as long as you don't subject it to strong external magnetic fields.
2:33 p.m.
If you do lose the formatting of an Intel 7110 bubble memory device, to
reformat it you need something Intel called a "seed module". The
instructions to build a seed module are in the BPK72 manual.
2:39 p.m.
On Feb 22, 2018, at 2:33 PM, Eric Smith via cctalk
<cctalk at classiccmp.org> wrote:
If you do lose the formatting of an Intel 7110 bubble memory device, to
reformat it you need something Intel called a "seed module". The
instructions to build a seed module are in the BPK72 manual.
I've seen those instructions. As I understand it, I may need to do that to restore a
module to operation if it's lost its seed. But if that has happened to either of the
two modules in my firmware cartridge already, then it's all over.
--
Mark J. Blair, NF6X <nf6x at nf6x.net>
http://www.nf6x.net/
2:52 p.m.
On Thu, Feb 22, 2018 at 3:39 PM, Mark J. Blair via cctalk <
cctalk at classiccmp.org> wrote:
I've seen those instructions. As I understand it, I may need to do that to
restore a module to operation if it's lost its seed. But if that has
happened to either of the two modules in my firmware cartridge already,
then it's all over.
Yes. However, unless someone deliberately tried to erase the module,
there's no particular reason to think that such a problem has occurred. The
things are very robust, which is exactly why the military liked them so
much.
2:11 p.m.
On Thu, Feb 22, 2018 at 2:23 PM, dwight via cctalk <cctalk at classiccmp.org>
wrote:
Do not remove the chip from the bias magnets. All will
be lost if you do.
That's true, but AFAIK all commercially produced bubble memory devices,
including Intel (7110 1Mbit, 7114 4Mbit) and TI, the bias magnets are
integral to the packaging of the device, so there's no danger of that
unless you pry apart the device packaging.
2:08 p.m.
It's easy to design an emulator at the level of the D7220 host interface.
It is _difficult_ to design an emulator at the interface between the D7220
controller and the 7242 Formatter/Sense Amplifier, because the 7242 is a
tricky little beastie, and while the interface is somewhat documented, the
docs aren't terribly clear and not entirely complete, because Intel didn't
think anyone would want to use the 7242 without the D7220.
Unfortunately what Mark needs is to emulate it at the 7242 level, because
the 7242 is in the cartridge and the D7220 is in the host.
3:14 p.m.
On 02/22/2018 03:08 PM, Mark J. Blair via cctalk wrote:
I'm about to acquire a couple of 1980s-vintage
military surplus AN/UGC-137A terminals (i.e., glass TTYs with some local message
preparation and storage capabilities) which have a bubble memory subsystem. They use
plug-in cartridges containing 256 kbytes of storage in the form of two Intel 7110 1 Mbit
bubble memory chips and their 7242 formatter/sense amplifiers.
One of the cartridges contains the one and only copy of the terminals' firmware,
which I believe they need to load up at each reboot. Naturally, extracting the contents of
that irreplaceable cartridge for archival, and potential future emulation, is going to be
a very high priority for me. I have a few different approaches in mind for accomplishing
that. One approach would be to remove the two memory devices from the critical cartridge
in order to dump their contents in an independent bubble memory subsystem.
With that in mind, I'd like to get my hands on a working Intel 7110 bubble memory
subsystem, or the parts to build one myself (i.e., a complete
7110/7220/7230/7242/7250/7254 chipset that I could make a board around).
What you
plan is risky.? You first need to know how they organize the
data in each of the loops.
The problem is did that interleave the two bubble or are they addressed
seperately.? Both possibilities
were the case.? Each BM required its own CPG, FSA and drivers but could
share the 7220 BMC.
Might anybody here have what I need available for sale
or trade? I might be able to use some arbitrary old computer or other device that has a
subsystem based around the Intel 7110, or a development kit such as the Intel BPK-72, or a
chipset to make my own board.
I got two of them back in the 80s, they are now part
of a CP/M Z80
system I built back then.
Not much storage and sorta slow and power hungry.
If I can't acquire or make the hardware to dump
the memory chips outside of their native system, then I think my next option would be to
passively snoop the host bus interface of the Intel 7220 controller I expect to find
inside the terminals as they perform their initial firmware load, so that I can
reconstruct the cartridge contents from the trace data.
The best and lowest risk
point is to snoop is at the data bus
interface.? Logic analyzer or something fast enough to
grab the data.? The 7220 chip set gave a nice bus interface with a
fairly simple command set.? Its also the side of
the device thats well documented.
I may have a few of the basic bubble memory units 7110 as they were
socketed.? No extra CPD, FSA, Driver devices,
?or BMC 7220.
Allison
The terminals were made by the Librascope division of
Singer, and brochures can be found here:
http://www.librascopememories.com/Librascope_Memories/Product_Literature_fi…
http://www.librascopememories.com/Librascope_Memories/Product_Literature_fi…
http://www.librascopememories.com/Librascope_Memories/Product_Literature_fi…
I already have the critical cartridge in hand, and I posted some pictures of it on
Twitter:
https://twitter.com/nf6x/status/964578291767173120
5:09 p.m.
Looking things up, I don't think the Nicolet one with the scope was the Intel one.
Dwight
________________________________
From: cctalk <cctalk-bounces at classiccmp.org> on behalf of allison via cctalk
<cctalk at classiccmp.org>
Sent: Thursday, February 22, 2018 3:14:45 PM
To: cctalk at classiccmp.org
Subject: Re: WTB Intel 7110 Bubble Memory Subsystem or Chipset
On 02/22/2018 03:08 PM, Mark J. Blair via cctalk wrote:
I'm about to acquire a couple of 1980s-vintage
military surplus AN/UGC-137A terminals (i.e., glass TTYs with some local message
preparation and storage capabilities) which have a bubble memory subsystem. They use
plug-in cartridges containing 256 kbytes of storage in the form of two Intel 7110 1 Mbit
bubble memory chips and their 7242 formatter/sense amplifiers.
One of the cartridges contains the one and only copy of the terminals' firmware,
which I believe they need to load up at each reboot. Naturally, extracting the contents of
that irreplaceable cartridge for archival, and potential future emulation, is going to be
a very high priority for me. I have a few different approaches in mind for accomplishing
that. One approach would be to remove the two memory devices from the critical cartridge
in order to dump their contents in an independent bubble memory subsystem.
With that in mind, I'd like to get my hands on a working Intel 7110 bubble memory
subsystem, or the parts to build one myself (i.e., a complete
7110/7220/7230/7242/7250/7254 chipset that I could make a board around).
What you
plan is risky. You first need to know how they organize the
data in each of the loops.
The problem is did that interleave the two bubble or are they addressed
seperately. Both possibilities
were the case. Each BM required its own CPG, FSA and drivers but could
share the 7220 BMC.
Might anybody here have what I need available for sale
or trade? I might be able to use some arbitrary old computer or other device that has a
subsystem based around the Intel 7110, or a development kit such as the Intel BPK-72, or a
chipset to make my own board.
I got two of them back in the 80s, they are now part
of a CP/M Z80
system I built back then.
Not much storage and sorta slow and power hungry.
If I can't acquire or make the hardware to dump
the memory chips outside of their native system, then I think my next option would be to
passively snoop the host bus interface of the Intel 7220 controller I expect to find
inside the terminals as they perform their initial firmware load, so that I can
reconstruct the cartridge contents from the trace data.
The best and lowest risk
point is to snoop is at the data bus
interface. Logic analyzer or something fast enough to
grab the data. The 7220 chip set gave a nice bus interface with a
fairly simple command set. Its also the side of
the device thats well documented.
I may have a few of the basic bubble memory units 7110 as they were
socketed. No extra CPD, FSA, Driver devices,
or BMC 7220.
Allison
The terminals were made by the Librascope division of
Singer, and brochures can be found here:
http://www.librascopememories.com/Librascope_Memories/Product_Literature_fi…
http://www.librascopememories.com/Librascope_Memories/Product_Literature_fi…
http://www.librascopememories.com/Librascope_Memories/Product_Literature_fi…
I already have the critical cartridge in hand, and I posted some pictures of it on
Twitter:
https://twitter.com/nf6x/status/964578291767173120
8:37 p.m.
This is all bringing back when Intel tried to see BM's to me at Tektronix.
Got to go see them being made. Something just told me "dead end".
-pete
On Thu, Feb 22, 2018 at 5:09 PM, dwight via cctalk <cctalk at classiccmp.org>
wrote:
Looking things up, I don't think the Nicolet one
with the scope was the
Intel one.
Dwight
________________________________
From: cctalk <cctalk-bounces at classiccmp.org> on behalf of allison via
cctalk <cctalk at classiccmp.org>
Sent: Thursday, February 22, 2018 3:14:45 PM
To: cctalk at classiccmp.org
Subject: Re: WTB Intel 7110 Bubble Memory Subsystem or Chipset
On 02/22/2018 03:08 PM, Mark J. Blair via cctalk wrote:
I'm about to acquire a couple of
1980s-vintage military surplus
AN/UGC-137A terminals (i.e., glass TTYs with some
local message preparation
and storage capabilities) which have a bubble memory subsystem. They use
plug-in cartridges containing 256 kbytes of storage in the form of two
Intel 7110 1 Mbit bubble memory chips and their 7242 formatter/sense
amplifiers.
One of the cartridges contains the one and only copy of the terminals'
firmware, which I believe they need to load up at each reboot. Naturally,
extracting the contents of that irreplaceable cartridge for archival, and
potential future emulation, is going to be a very high priority for me. I
have a few different approaches in mind for accomplishing that. One
approach would be to remove the two memory devices from the critical
cartridge in order to dump their contents in an independent bubble memory
subsystem.
With that in mind, I'd like to get my hands on a working Intel 7110
bubble
memory subsystem, or the parts to build one myself (i.e., a complete
7110/7220/7230/7242/7250/7254 chipset that I could make a board around).
What you plan is risky. You first need to know how they organize the
data in each of the loops.
The problem is did that interleave the two bubble or are they addressed
seperately. Both possibilities
were the case. Each BM required its own CPG, FSA and drivers but could
share the 7220 BMC.
Might anybody here have what I need available for
sale or trade? I might
be able to use some arbitrary old computer or other device
that has a
subsystem based around the Intel 7110, or a development kit such as the
Intel BPK-72, or a chipset to make my own board.
I got two of them back in the 80s, they are now part of a CP/M Z80
system I built back then.
Not much storage and sorta slow and power hungry.
If I can't acquire or make the hardware to
dump the memory chips outside
of their native system, then I think my next option
would be to passively
snoop the host bus interface of the Intel 7220 controller I expect to find
inside the terminals as they perform their initial firmware load, so that I
can reconstruct the cartridge contents from the trace data.
The best and lowest risk point is to snoop is at the data bus
interface. Logic analyzer or something fast enough to
grab the data. The 7220 chip set gave a nice bus interface with a
fairly simple command set. Its also the side of
the device thats well documented.
I may have a few of the basic bubble memory units 7110 as they were
socketed. No extra CPD, FSA, Driver devices,
or BMC 7220.
Allison
The terminals were made by the Librascope
division of Singer, and
brochures can be found here:
Product_Literature_files/Communications%20Terminal.pdf
Product_Literature_files/SST.pdf
Product_Literature_files/Bubble%20Memory%20Cartridge.pdf
I already have the critical cartridge in hand, and I posted some
pictures of it on
Twitter:
23 Feb
23 Feb
9:23 a.m.
On 02/22/2018 10:37 PM, Pete Lancashire via cctalk wrote:
This is all bringing back when Intel tried to see
BM's to me at Tektronix.
Got to go see them being made. Something just told me "dead end".
The original bubble memories were sort of dead end, but
applying more advanced semiconductor lithography to them,
going to vertical Bloch-line memory architecture, and such
could have given them a lot more life, at least. But, when
IBM pulled out of the advanced research on it, development
just stalled.
Jon
10:11 a.m.
On Fri, Feb 23, 2018 at 10:23 AM, Jon Elson via cctalk <
cctalk at classiccmp.org> wrote:
The original bubble memories were sort of dead end,
but applying more
advanced semiconductor lithography to them, going to vertical Bloch-line
memory architecture, and such could have given them a lot more life, at
least. But, when IBM pulled out of the advanced research on it,
development just stalled
I don't know what "vertical Block line memory architecture" is, but more
advanced lithography wasn't sufficient, because the size of useful magnetic
domains couldn't be scaled down much smaller than what was used in the
4Mbit devices, no matter how fine your lithography was. The lithography was
not the limiting factor. That's why Intel spun off their magnetics division
to continue manufacture and sales of what they recognized as a dead-end
product line. It was still viable for some years as a niche product in
applications where the requirement for physical robustness was far more
important than either density or price.
7:11 a.m.
That's one of the most beautiful machines I've ever seen! Are they
rare/expensive? (I'm guessing yes)
=]
--
Anders Nelson
+1 (517) 775-6129
www.erogear.com
On Thu, Feb 22, 2018 at 3:08 PM, Mark J. Blair via cctalk <
cctalk at classiccmp.org> wrote:
I'm about to acquire a couple of 1980s-vintage
military surplus
AN/UGC-137A terminals (i.e., glass TTYs with some local message preparation
and storage capabilities) which have a bubble memory subsystem. They use
plug-in cartridges containing 256 kbytes of storage in the form of two
Intel 7110 1 Mbit bubble memory chips and their 7242 formatter/sense
amplifiers.
One of the cartridges contains the one and only copy of the terminals'
firmware, which I believe they need to load up at each reboot. Naturally,
extracting the contents of that irreplaceable cartridge for archival, and
potential future emulation, is going to be a very high priority for me. I
have a few different approaches in mind for accomplishing that. One
approach would be to remove the two memory devices from the critical
cartridge in order to dump their contents in an independent bubble memory
subsystem.
With that in mind, I'd like to get my hands on a working Intel 7110 bubble
memory subsystem, or the parts to build one myself (i.e., a complete
7110/7220/7230/7242/7250/7254 chipset that I could make a board around).
Might anybody here have what I need available for sale or trade? I might
be able to use some arbitrary old computer or other device that has a
subsystem based around the Intel 7110, or a development kit such as the
Intel BPK-72, or a chipset to make my own board.
If I can't acquire or make the hardware to dump the memory chips outside
of their native system, then I think my next option would be to passively
snoop the host bus interface of the Intel 7220 controller I expect to find
inside the terminals as they perform their initial firmware load, so that I
can reconstruct the cartridge contents from the trace data.
The terminals were made by the Librascope division of Singer, and
brochures can be found here:
http://www.librascopememories.com/Librascope_Memories/
Product_Literature_files/Communications%20Terminal.pdf
http://www.librascopememories.com/Librascope_Memories/
Product_Literature_files/SST.pdf
http://www.librascopememories.com/Librascope_Memories/
Product_Literature_files/Bubble%20Memory%20Cartridge.pdf
I already have the critical cartridge in hand, and I posted some pictures
of it on Twitter:
https://twitter.com/nf6x/status/964578291767173120
--
Mark J. Blair, NF6X <nf6x at nf6x.net>
http://www.nf6x.net/
7:57 a.m.
On Feb 23, 2018, at 07:11, Anders Nelson
<anders.k.nelson at gmail.com> wrote:
That's one of the most beautiful machines I've ever seen! Are they
rare/expensive? (I'm guessing yes)
Yes to both! I don't know how many are out in the wild today, and I don't know how
many were made. I don't even know yet whether they were truly fielded, or if they
failed to be selected to fill the role that they were presumably competing for.
--
Mark J. Blair, NF6X <nf6x at nf6x.net>
http://www.nf6x.net/
2493
days inactive
2494
days old
18 comments
7 participants
participants (7)
-
allisonportable＠gmail.com -
anders.k.nelson＠gmail.com -
dkelvey＠hotmail.com -
elson＠pico-systems.com -
nf6x＠nf6x.net -
pete＠petelancashire.com -
spacewar＠gmail.com