80E Series sampling modules
Hi all,
I've seen quite a few 80E series modules sell in "for parts" condition due to presumed ESD/EOS damage. I would really like an 80E04. A working 80E04 is typically $1500+ but I regularly see 80E03 in the $200-$400 range.
The specs between these two are very similar, with the exception that the 80E04 has TDR functionality. The typical damage to this unit is to the front end module, a gold-plated case with a number of pins that connect to the main board.
What are the changes that this front end module is the same between 80E04 and 80E03? I wonder if maybe the only difference between these two is that on 80E04 the TDR feature is enabled and the rise time is characterized. Does anyone have any experience servicing these units? The front end module is totally unserviceable, with its innards being made up of bare dies bonded out inside the unit.
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Re: Tek 2247A [SN B029000] Recap and diode part list ?
The values are not critical; these capacitors are used for filtering
conducted EMI.
Y class capacitors (hot or neutral to ground) have more stringient
specifications and can be used in place of X (hot to neutral) class
capacitors. Since a short or leakage between hot and ground could
cause a hazardous condition for the user, Y class capacitors must fail
open. X class capacitors just have to fail in a way that they do not
burn and present a fire hazard. You can also use higher class safety
capacitors like X2 and Y2 in place of X1 and Y1.
X class capacitors are available in larger values because Y class
capacitors between hot and ground have to be small enough to limit
ground leakage current. This gets interesting if you have a bunch of
instruments plugged into the same circuit; if their combined ground
leakage currents through their Y class capacitors is high enough, it
can trigger a ground fault interrupter.
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On Sat, 26 Mar 2016 01:36:26 +0000 (UTC), you wrote: Hi David.
Thanks for your advice.?
Since those are safety cap and ordered one not rate x or y. Decided to extract from junk psu board ceramic cap rate x1 & y2 with 1000pf should feel safer. Those are blue in color ceramic disk type
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Maybe it is time for me to make a crib sheet for the 7000 mainframe
interface signals.
I think what is happening is that the vertical plug-in selection
signal which is driven by the mainframe chop selection is getting into
either the 7CT1N base drive current source or the emitter current
amplifier. The vertical smearing is only visible at low base and
emitter currents.
When the 7CT1N is installed into a horizontal slot, operation is
different and the chopping is done without signaling the plug-in. I
ran some tests to confirm that the chop and alt signals are not even
available to a vertical plug-in installed into a horizontal slot; only
one trace is available when using a dual trace plug-in installed into
a horizontal slot.
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On Fri, 25 Mar 2016 09:36:20 -0500, you wrote: I went back and tested it again revealing some problems which were not
apparent before. The 7CT1N was definitely not designed to operate
this way.
It works well enough in alternate mode but that has some
disadvantages. It should work in chop mode but the logic built around
Q204 and Q208 disables the collector supply between chops (why?) and
the chopping rate is so high that the collector supply amplifier and
probably later stages cannot keep up. Removing Q212 should fix this
and it does allow it to work in a horizontal slot but in a vertical
slot it still has problems with vertical smearing.
So without modifying the 7CT1N, it would appear that using a 7844 is
the way to go.
My 7CT1N is a little weird and is probably not operating quite as well
as it should so it may be that the vertical chopping artifacts are
peculiar to it.
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Re: 8,000 Member Milestone
Welcome to the club.?Leon Robinson ?? K5JLR
Political Correctness is a Political Disease.
From: "analogaddict013@... [TekScopes]" <TekScopes@...>
To: TekScopes@...
Sent: Friday, March 25, 2016 8:42 PM
Subject: Re: [TekScopes] 8,000 Member Milestone
? My endless cycle started less than two years ago with a 465 and GenRad 1330A.... both "working" and fully intact. ("working" = the 465 with horribly degraded precision resistors)
Once I called Pittsburg Tektronix about calibration and heard their price, I decided to buy all the cal gear and do it myself......... Now I'm fixing a mountain of cal gear. In the process of buying all of the cal gear, I inevitably encountered many scopes for cheap... That's what got me into the collecting.
Now I have to stack them.
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Re: 8,000 Member Milestone
On 26 March 2016 at 01:55, 'Tom Miller' tmiller11147@... [TekScopes] <TekScopes@...> wrote: Selling or asking? Some sellers are smoking dope with their asking prices. ?Sold: Tek 2445A? ?430, Tek 485 ?246 If they are listed as good working order, they seem to go for silly money. Yes, I know some people list them for ridiculous amounts - I wonder if they are just trying to inflate the market. Malcolm
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Re: 8,000 Member Milestone
Selling or asking? Some sellers are smoking dope with their asking prices.
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----- Original Message ----- From: Malcolm Hunter malcolm.r.hunter@... [TekScopes] To: TekScopes@... Sent: Friday, March 25, 2016 8:32 PM Subject: Re: [TekScopes] 8,000 Member Milestone Judging by how much they are selling for on eBay, they are an investment. Malcolm On 25 March 2016 23:52:35 "Jerome Leach jerome_leach@... [TekScopes]" <TekScopes@...> wrote: > That is the truth! > Bought a 564B Mod 121 some 4 1/2 years ago.... > Now I have a 317, 561B, 545B, 181 Time Mark, 190B, 106, 114, 1121, and > around 17 plug-ins. > > From: "Dave Daniel kc0wjn@... [TekScopes]" <TekScopes@...> > To: TekScopes@... > Sent: Friday, March 25, 2016 7:25 PM > Subject: Re: [TekScopes] 8,000 Member Milestone > > THE one broken oscilloscope. Then, needed a second one to fix the first. > Then ..... > > On 3/25/2016 5:20 PM, paul huguenin tigrol.lechat@... [TekScopes] > wrote: >> >> Which came first, the broken test equipment collection or the warehouse? >> >> Paul >> >> 2016-03-25 12:39 GMT+01:00 Paul Amaranth paul@... [TekScopes] < >> TekScopes@...>: >> >> > On Thu, Mar 24, 2016 at 09:21:01PM -0700, 'Dennis Tillman' >> > dennis@... [TekScopes] wrote: >> > > As their prize I had in mind that each of us donate one broken >> plugin or >> > > scope to them. >> > > >> > > That way they would have no choice but to be lifetime members. It >> should >> > > take them that long to fix them all. >> > > >> > > >> > > >> > > Don't ask me how I know this. >> > > >> > > >> > > >> > > Dennis Tillman W7PF >> > >> > No need to ask :-) >> > >> > -- >> > Paul Amaranth, GCIH | Rochester MI, USA >> > Aurora Group, Inc. | Security, Systems & Software >> > paul@... | Unix & Windows >> > >> > >> > >> > ------------------------------------ >> > Posted by: Paul Amaranth <Paul@...> >> > ------------------------------------ >> > >> > >> > ------------------------------------ >> > >> > Yahoo Groups Links >> > >> > >> > >> > >> >> >> >> > > > > > > > ------------------------------------ > > ------------------------------------ > > > ------------------------------------ > > Yahoo Groups Links > > > > > > > > >
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Re: 8,000 Member Milestone
Roger that.
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On 3/25/2016 7:37 PM, John Griessen john@... [TekScopes] wrote: On 03/25/2016 08:17 PM, Dave Daniel kc0wjn@... [TekScopes] wrote:
Only to us.
On 3/25/2016 6:32 PM, Malcolm Huntermalcolm.r.hunter@...
[TekScopes] wrote:
Judging by how much they are selling for on eBay, they are an investment.
It's likely to crash like a bubble market some day as we age out.
There is a lot to be said for a scope/logic-analyzer small box plus probes
that uses a tablet computer for the GUI/display/DSP-post-processing.
Not that you won't want good analog scopes too, but...the millenials won't see that.
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Yahoo Groups Links
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Re: 8,000 Member Milestone
My endless cycle started less than two years ago with a 465 and GenRad 1330A.... both "working" and fully intact. ("working" = the 465 with horribly degraded precision resistors)
Once I called Pittsburg Tektronix about calibration and heard their price, I decided to buy all the cal gear and do it myself......... Now I'm fixing a mountain of cal gear. In the process of buying all of the cal gear, I inevitably encountered many scopes for cheap... That's what got me into the collecting.
Now I have to stack them.
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Re: TDS 54x Acquisition troubleshooting
Hello,
Quick and late (here) update:
The TDS544A had been put aside a while, the TDS540 passed self tests but
needed a recap for A11 and A12 boards, A10 had been taken care of by
someone before things turned bad.
Now I have a working scope to confront the failing TDS544A with.
The test point TP1608 is at -6.72V, TP1658 at -6.74V in the working scope.
Just for future reference.
What would be a good choice/source for a budget USB GPIB interface?
Avoiding fakes.
Paul
2016-03-25 9:00 GMT+01:00 kennedy.simon@... [TekScopes] <
TekScopes@...>:
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TL074/TL072 work fine. Glad the schematics have made it to KO4BB.
I'm not too sure what the voltages should be at those test points. I
would strongly suggest tying to find a GPIB adaptor somehow as it makes
this debugging quite a lot easier. I had problems with the error log
getting too long to find the latest errors.
Even if the traces looks like they are connected make sure to check them
with a multimeter for continuity.
Simon
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Posted by: kennedy.simon@...
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Yahoo Groups Links
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Re: 8,000 Member Milestone
On 03/25/2016 08:17 PM, Dave Daniel kc0wjn@... [TekScopes] wrote: Only to us.
On 3/25/2016 6:32 PM, Malcolm Huntermalcolm.r.hunter@...
[TekScopes] wrote:
Judging by how much they are selling for on eBay, they are an investment.
It's likely to crash like a bubble market some day as we age out. There is a lot to be said for a scope/logic-analyzer small box plus probes that uses a tablet computer for the GUI/display/DSP-post-processing. Not that you won't want good analog scopes too, but...the millenials won't see that.
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Re: Tek 2247A [SN B029000] Recap and diode part list ?
Hi David. ?
Thanks for your advice.?
Since those are safety cap and ordered one not rate x or y. Decided to extract from junk psu board ceramic cap rate x1 & y2 with 1000pf should feel safer. Those are blue in color ceramic disk type
Sent from Yahoo Mail on Android
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On Sat, 26 Mar, 2016 at 3:17, David davidwhess@... [TekScopes]<TekScopes@...> wrote: ? Where the parts list says 250V, it should say 250VAC. These are safety capacitors which are intended for use across hot/neutral (class X), hot/ground (class Y), and neutral/ground (class Y). If they fail, they are suppose to do so in a safe way preventing hazardous conditions. 250VAC safety capacitors may have a 630VDC rating so the units you selected should work fine and in the past that is how they might be selected. Today though 250VAC class X and class Y safety capacitors are easy to find. On Fri, 25 Mar 2016 01:16:25 +0000 (UTC), you wrote: Hi David,
I am not very sure ?Cap A18C2213, A18C2214, A18C2217 description says "CAP,FXD,MTLZD:1500pF,10%,250V" ?which never mention AC but all those located in AC circuit.
I ordered DC cap "ECQ-E6152JF" which 630VDC cap. ?Don't feel right here, am I using wrong CAP and should be using AC Cap?
From: "David davidwhess@... [TekScopes]" <TekScopes@...>
To: TekScopes@...
Sent: Sunday, 20 March 2016, 13:56
Subject: Re: [TekScopes] Tek 2247A [SN B029000] Recap and diode part list ?
? Film capacitors are sometimes selected for specific characteristics to
support their application but in the general case, they are all
interchangeable and can also be replaced with C0G or NP0 type ceramic
capacitors.
The difference between number 1 and number 5 at your first link is
physical construction.
On Sun, 20 Mar 2016 04:51:08 +0000 (UTC), you wrote:
Hi David,
One of my equipment having ?plastic type CAP with transparent case [look like label ?number 1 at this link]?
I am try to replace it with??metalized polyester film capacitor from Panasonic with same value and same volt rating, they look like [], they look very different from original cap. ?This new one look more like ?label number ?4 & 5 [?].
Is there any compatible issues? or ?number [1] actually older technology no longer in used? I can find any similar cap from ?element 14 #yiv8831964101 #yiv8831964101 -- #yiv8831964101ygrp-mkp {border:1px solid #d8d8d8;font-family:Arial;margin:10px 0;padding:0 10px;}#yiv8831964101 #yiv8831964101ygrp-mkp hr {border:1px solid #d8d8d8;}#yiv8831964101 #yiv8831964101ygrp-mkp #yiv8831964101hd {color:#628c2a;font-size:85%;font-weight:700;line-height:122%;margin:10px 0;}#yiv8831964101 #yiv8831964101ygrp-mkp #yiv8831964101ads {margin-bottom:10px;}#yiv8831964101 #yiv8831964101ygrp-mkp .yiv8831964101ad {padding:0 0;}#yiv8831964101 #yiv8831964101ygrp-mkp .yiv8831964101ad p {margin:0;}#yiv8831964101 #yiv8831964101ygrp-mkp .yiv8831964101ad a {color:#0000ff;text-decoration:none;}#yiv8831964101 #yiv8831964101ygrp-sponsor #yiv8831964101ygrp-lc {font-family:Arial;}#yiv8831964101 #yiv8831964101ygrp-sponsor #yiv8831964101ygrp-lc #yiv8831964101hd {margin:10px 0px;font-weight:700;font-size:78%;line-height:122%;}#yiv8831964101 #yiv8831964101ygrp-sponsor #yiv8831964101ygrp-lc .yiv8831964101ad {margin-bottom:10px;padding:0 0;}#yiv8831964101
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Re: 8,000 Member Milestone
Only to us. On 3/25/2016 6:32 PM, Malcolm Hunter malcolm.r.hunter@... [TekScopes] wrote:
Judging by how much they are selling for on eBay, they are an investment.
Malcolm
On 25 March 2016 23:52:35 "Jerome Leach jerome_leach@...
[TekScopes]"
<TekScopes@...> wrote:
That is the truth!
Bought a 564B Mod 121 some 4 1/2 years ago....
Now I have a 317, 561B, 545B, 181 Time Mark, 190B, 106, 114, 1121, and
around 17 plug-ins.
From: "Dave Daniel kc0wjn@... [TekScopes]" <TekScopes@...>
To: TekScopes@...
Sent: Friday, March 25, 2016 7:25 PM
Subject: Re: [TekScopes] 8,000 Member Milestone
THE one broken oscilloscope. Then, needed a second one to fix the first.
Then .....
On 3/25/2016 5:20 PM, paul huguenin tigrol.lechat@... [TekScopes]
wrote:
Which came first, the broken test equipment collection or the
warehouse?
Paul
2016-03-25 12:39 GMT+01:00 Paul Amaranth paul@...
[TekScopes] <
TekScopes@...>:
On Thu, Mar 24, 2016 at 09:21:01PM -0700, 'Dennis Tillman'
dennis@... [TekScopes] wrote:
As their prize I had in mind that each of us donate one broken plugin or
scope to them.
That way they would have no choice but to be lifetime members. It
should
take them that long to fix them all.
Don't ask me how I know this.
Dennis Tillman W7PF No need to ask :-)
--
Paul Amaranth, GCIH | Rochester MI, USA
Aurora Group, Inc. | Security, Systems & Software
paul@... | Unix & Windows
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Posted by: Paul Amaranth <Paul@...>
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Re: 8,000 Member Milestone
Judging by how much they are selling for on eBay, they are an investment. Malcolm On 25 March 2016 23:52:35 "Jerome Leach jerome_leach@... [TekScopes]" <TekScopes@...> wrote: That is the truth!
Bought a 564B Mod 121 some 4 1/2 years ago....
Now I have a 317, 561B, 545B, 181 Time Mark, 190B, 106, 114, 1121, and
around 17 plug-ins.
From: "Dave Daniel kc0wjn@... [TekScopes]" <TekScopes@...>
To: TekScopes@...
Sent: Friday, March 25, 2016 7:25 PM
Subject: Re: [TekScopes] 8,000 Member Milestone
THE one broken oscilloscope. Then, needed a second one to fix the first.
Then .....
On 3/25/2016 5:20 PM, paul huguenin tigrol.lechat@... [TekScopes]
wrote:
Which came first, the broken test equipment collection or the warehouse?
Paul
2016-03-25 12:39 GMT+01:00 Paul Amaranth paul@... [TekScopes] <
TekScopes@...>:
On Thu, Mar 24, 2016 at 09:21:01PM -0700, 'Dennis Tillman'
dennis@... [TekScopes] wrote:
As their prize I had in mind that each of us donate one broken plugin or
scope to them.
That way they would have no choice but to be lifetime members. It
should
take them that long to fix them all.
Don't ask me how I know this.
Dennis Tillman W7PF No need to ask :-)
--
Paul Amaranth, GCIH | Rochester MI, USA
Aurora Group, Inc. | Security, Systems & Software
paul@... | Unix & Windows
------------------------------------
Posted by: Paul Amaranth <Paul@...>
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Yahoo Groups Links
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Yahoo Groups Links
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Re: 8,000 Member Milestone
That is the truth! Bought a 564B Mod 121 some 4 1/2 years ago.... Now I have a 317, 561B, 545B, 181 Time Mark, 190B, 106, 114, 1121, and around 17 plug-ins. From: "Dave Daniel kc0wjn@... [TekScopes]" <TekScopes@...> To: TekScopes@... Sent: Friday, March 25, 2016 7:25 PM Subject: Re: [TekScopes] 8,000 Member Milestone THE one broken oscilloscope. Then, needed a second one to fix the first. Then ..... On 3/25/2016 5:20 PM, paul huguenin tigrol.lechat@... [TekScopes] wrote:
Which came first, the broken test equipment collection or the warehouse?
Paul
2016-03-25 12:39 GMT+01:00 Paul Amaranth paul@... [TekScopes] <
TekScopes@...>:
On Thu, Mar 24, 2016 at 09:21:01PM -0700, 'Dennis Tillman'
dennis@... [TekScopes] wrote:
As their prize I had in mind that each of us donate one broken plugin or
scope to them.
That way they would have no choice but to be lifetime members. It
should
take them that long to fix them all.
Don't ask me how I know this.
Dennis Tillman W7PF No need to ask :-)
--
Paul Amaranth, GCIH | Rochester MI, USA
Aurora Group, Inc. | Security, Systems & Software
paul@... | Unix & Windows
------------------------------------
Posted by: Paul Amaranth <Paul@...>
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Yahoo Groups Links
[Non-text portions of this message have been removed] ------------------------------------ ------------------------------------ ------------------------------------ Yahoo Groups Links [Non-text portions of this message have been removed]
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Re: 8,000 Member Milestone
THE one broken oscilloscope. Then, needed a second one to fix the first. Then ..... On 3/25/2016 5:20 PM, paul huguenin tigrol.lechat@... [TekScopes] wrote:
Which came first, the broken test equipment collection or the warehouse?
Paul
2016-03-25 12:39 GMT+01:00 Paul Amaranth paul@... [TekScopes] <
TekScopes@...>:
On Thu, Mar 24, 2016 at 09:21:01PM -0700, 'Dennis Tillman'
dennis@... [TekScopes] wrote:
As their prize I had in mind that each of us donate one broken plugin or
scope to them.
That way they would have no choice but to be lifetime members. It
should
take them that long to fix them all.
Don't ask me how I know this.
Dennis Tillman W7PF No need to ask :-)
--
Paul Amaranth, GCIH | Rochester MI, USA
Aurora Group, Inc. | Security, Systems & Software
paul@... | Unix & Windows
------------------------------------
Posted by: Paul Amaranth <Paul@...>
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Yahoo Groups Links
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Re: 8,000 Member Milestone
Which came first, the broken test equipment collection or the warehouse?
Paul
2016-03-25 12:39 GMT+01:00 Paul Amaranth paul@... [TekScopes] <
TekScopes@...>:
toggle quoted message
Show quoted text
On Thu, Mar 24, 2016 at 09:21:01PM -0700, 'Dennis Tillman'
dennis@... [TekScopes] wrote:
As their prize I had in mind that each of us donate one broken plugin or
scope to them.
That way they would have no choice but to be lifetime members. It should
take them that long to fix them all.
Don't ask me how I know this.
Dennis Tillman W7PF No need to ask :-)
--
Paul Amaranth, GCIH | Rochester MI, USA
Aurora Group, Inc. | Security, Systems & Software
paul@... | Unix & Windows
------------------------------------
Posted by: Paul Amaranth <Paul@...>
------------------------------------
------------------------------------
Yahoo Groups Links
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Re: Huge Databook collection now uploaded
On Fri, 25 Mar 2016 22:08:43 +0000, you wrote: On 25 March 2016 at 21:09, Malcolm Hunter <malcolm.r.hunter@...>
wrote:
On 25 March 2016 at 19:34, MIKE DURKIN Patriot121@... [TekScopes] <
TekScopes@...> wrote:
any one crazy enough to put it as one big zip and post on a torrent ? ?Working on it. ?Here is the magnet link:
magnet:?xt=urn:btih:4DEBE88409556F5E324354519E12B502D810358E&dn=Databooks%
20from%20Sphere&tr=udp%3a%2f%2ftracker.openbittorrent.com%
3a80%2fannounce&tr=udp%3a%2f%2ftracker.publicbt.com%3a80%
2fannounce&tr=udp%3a%2f%2ftracker.ccc.de%3a80%2fannounce? That works much better. I will plan on continuously seeding your torrent instead of making my own.
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Re: Huge Databook collection now uploaded
On 25 March 2016 at 21:09, Malcolm Hunter <malcolm.r.hunter@...> wrote: On 25 March 2016 at 19:34, MIKE DURKIN Patriot121@... [TekScopes] <
TekScopes@...> wrote:
any one crazy enough to put it as one big zip and post on a torrent ?
?Working on it.
?Here is the magnet link: magnet:?xt=urn:btih:4DEBE88409556F5E324354519E12B502D810358E&dn=Databooks% 20from%20Sphere&tr=udp%3a%2f%2ftracker.openbittorrent.com% 3a80%2fannounce&tr=udp%3a%2f%2ftracker.publicbt.com%3a80% 2fannounce&tr=udp%3a%2f%2ftracker.ccc.de%3a80%2fannounce?
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Re: Huge Databook collection now uploaded
On 25 March 2016 at 19:34, MIKE DURKIN Patriot121@... [TekScopes] < TekScopes@...> wrote: any one crazy enough to put it as one big zip and post on a torrent ? ?Working on it. Malcolm?
|
Re: Huge Databook collection now uploaded
I was planning to but Google Drive is one of the most useless file
sharing application in existence so I am not sure how long it will
take for me to download the files.
toggle quoted message
Show quoted text
On Fri, 25 Mar 2016 12:34:10 -0700, you wrote: any one crazy enough to put it as one big zip and post on a torrent ?
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David Hess