RE: [neonixie-l] Re: B7971from PolyPaks in Lynwood, MA

[Jeff Walton]

Don’t try to clear a mechanical short electrically.  The areas that generally 
short are the ends of the diagonal and vertical cathodes.  They are 
significantly heavier than the wire welds that attach to the pin and you will 
either destroy that part of the tube or possibly the backplane wires/traces 
that feed the cathode.  If you search the forum, there are good explanations 
and photos of how to mechanically separate the cathode ends that occasionally 
get shorted in shipping or from a mechanical shock.  You have a lot to lose if 
you permanently damage a valuable and salvageable tube.  If you can’t find the 
information, send me a message and I have photos and have successfully cleared 
mechanical shorts in the B7971.

 

Jeff

 

 

From: neonixie-l@googlegroups.com On Behalf Of Alan Woodman
Sent: Friday, December 4, 2020 10:41 PM
To: neonixie-l 
Subject: Re: [neonixie-l] Re: B7971from PolyPaks in Lynwood, MA

 

Yes, I bought some 7971 tubes from PolyPaks right after they were surplused 
from the NY stock exchange displays. I don't recall the price but it was likely 
3 orders of magnitude cheaper. I have 4 in use presently in one of Ray 
Weisling's FLW displays. Was fortunate to get one of his boards from him in his 
island location after pestering him at length. Too bad he cheated so many other 
buyers. Probably because I knew Ray from my ham radio hobby when he was still 
living in Milwaukee, WI. btw;  one of my spare tubes has a short between 2 
segments and I've read it might be curable by dumping a charged cap to clear 
the short. I'm not too keen on trying this but suppose I have nothing to lose. 
Has anyone had any success with this approach? Just recently did notice that a 
lower right corner segment on one of the FLW tubes may also be shorting but 
it's not bothersome yet. Hope it's not in the FLW circuitry. ;=(

It's been running nonstop for more than 5 years and still surprises me at times.

 

I've got a long history working with Nixies having lived in Japan for years 
during the 70s. Back then I could buy NEC CD-83P 1/2" tubes new for 10 cents 
each in Akahibara. Bought many hundreds and sold then at hamfests for a few 
years  Also supplied them to a ham radio maker on the west coast for awhile, I 
think it was SBE but can't find them now. Would like to get one of those radios 
just for the nostalgia. I used to be a member of this board before it changed 
over. Just rejoined today and notice they use my unmonitored Google email 
address so any replies should be directed to me thru this group. It's nice to 
see it's so active once again.  btw; I'm looking to see if Dave Forbes of his 
CRT clock fame is around here. I'm told he may habit this board..  

 

On Thursday, December 3, 2020 at 3:45:50 PM UTC-6 gregebert wrote:

Did anyone in this forum get their 7971's from PolyPaks a long time ago 
(1970s/1980s) ? I recall they were inexpensive, and many were sold in pairs 
along with the socket/driver board after being scrapped from Lectrascan units.

 

Just curious how some of you acquired a large stash.

On Thursday, December 3, 2020 at 11:15:03 AM UTC-8 Pramanicin wrote:

They're currently going for anywhere from 160 to 200 dollars on eBay. Pictures 
of them being tested will help. Too rich for my blood at the moment, but I have 
enough of them already :)

 

Best of luck selling them!

 

Cheers

 

Nick

Sent from my iPhone





On Dec 3, 2020, at 10:32, Wo Tu mailto:wtu...@gmail.com> > 
wrote:

I‘ve built 2 clocks using B7971. But now I dont have space for more. 

 

gregebert schrieb am Donnerstag, 3. Dezember 2020 um 19:26:41 UTC+1:

If you dont already have a clock or other device with 7971's, I suggest you 
make one. Even though these tubes are a bit ugly, they are so enormous and 
versatile that you will be pleased with it. And keep a few spares. I built an 
8-tube clock with 7971's a few years ago and I still like it, and wish I had 
time to add more features via software (it's RasPi based, so I'm limited only 
by time and creativity).

 

If you decide to sell, I've seen a lot of these being sold on Ebay for well 
over 100 USD, especially if you can show they are tested. You probably already 
have several messages from other neonixie members who want to buy some.

 

On Thursday, December 3, 2020 at 10:11:26 AM UTC-8 Wo Tu wrote:

I sorted out my collection of tubes and was surprised , how much B7971 I own.

Would like to sell some of these tubes. What do you think is a fair price for 
one tube , or for six tubes ?

 

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Re: [neonixie-l] Re: B7971from PolyPaks in Lynwood, MA

[Alan Woodman]

Yes, I bought some 7971 tubes from PolyPaks right after they were surplused 
from the NY stock exchange displays. I don't recall the price but it was 
likely 3 orders of magnitude cheaper. I have 4 in use presently in one of 
Ray Weisling's FLW displays. Was fortunate to get one of his boards from 
him in his island location after pestering him at length. Too bad he 
cheated so many other buyers. Probably because I knew Ray from my ham radio 
hobby when he was still living in Milwaukee, WI. btw;  one of my spare 
tubes has a short between 2 segments and I've read it might be curable by 
dumping a charged cap to clear the short. I'm not too keen on trying this 
but suppose I have nothing to lose. Has anyone had any success with this 
approach? Just recently did notice that a lower right corner segment on one 
of the FLW tubes may also be shorting but it's not bothersome yet. Hope 
it's not in the FLW circuitry. ;=(
It's been running nonstop for more than 5 years and still surprises me at 
times.

I've got a long history working with Nixies having lived in Japan for years 
during the 70s. Back then I could buy NEC CD-83P 1/2" tubes new for 10 
cents each in Akahibara. Bought many hundreds and sold then at hamfests for 
a few years  Also supplied them to a ham radio maker on the west coast for 
awhile, I think it was SBE but can't find them now. Would like to get one 
of those radios just for the nostalgia. I used to be a member of this board 
before it changed over. Just rejoined today and notice they use my 
unmonitored Google email address so any replies should be directed to me 
thru this group. It's nice to see it's so active once again.  btw; I'm 
looking to see if Dave Forbes of his CRT clock fame is around here. I'm 
told he may habit this board..  

On Thursday, December 3, 2020 at 3:45:50 PM UTC-6 gregebert wrote:

> Did anyone in this forum get their 7971's from PolyPaks a long time ago 
> (1970s/1980s) ? I recall they were inexpensive, and many were sold in pairs 
> along with the socket/driver board after being scrapped from Lectrascan 
> units.
>
> Just curious how some of you acquired a large stash.
>
> On Thursday, December 3, 2020 at 11:15:03 AM UTC-8 Pramanicin wrote:
>
>> They're currently going for anywhere from 160 to 200 dollars on eBay. 
>> Pictures of them being tested will help. Too rich for my blood at the 
>> moment, but I have enough of them already :)
>>
>> Best of luck selling them!
>>
>> Cheers
>>
>> Nick
>>
>> Sent from my iPhone
>>
>> On Dec 3, 2020, at 10:32, Wo Tu  wrote:
>>
>> I‘ve built 2 clocks using B7971. But now I dont have space for more. 
>>
>>
>>
>> gregebert schrieb am Donnerstag, 3. Dezember 2020 um 19:26:41 UTC+1:
>>
>>> If you dont already have a clock or other device with 7971's, I suggest 
>>> you make one. Even though these tubes are a bit ugly, they are so enormous 
>>> and versatile that you will be pleased with it. And keep a few spares. I 
>>> built an 8-tube clock with 7971's a few years ago and I still like it, and 
>>> wish I had time to add more features via software (it's RasPi based, so I'm 
>>> limited only by time and creativity).
>>>
>>> If you decide to sell, I've seen a lot of these being sold on Ebay for 
>>> well over 100 USD, especially if you can show they are tested. You probably 
>>> already have several messages from other neonixie members who want to buy 
>>> some.
>>>
>>> On Thursday, December 3, 2020 at 10:11:26 AM UTC-8 Wo Tu wrote:
>>>
 I sorted out my collection of tubes and was surprised , how much B7971 
 I own.
 Would like to sell some of these tubes. What do you think is a fair 
 price for one tube , or for six tubes ?

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>>  
>> 
>> .
>>
>>

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Re: [neonixie-l] Re: B7971 DUSTOFF Board Interest

[Mahdi Al Husseini]

Yes of course! Currently, it will immediately select the closest airport
based on longitude and latitude data, but it is very easy to adjust the
code to select a particular airport ID. I can help with that as needed. The
current code for TAF/METAR is attached for reference. If purchased, I will
adjust the code slightly, to support the ESP32 on the new boards.

On Fri, Dec 4, 2020 at 9:55 PM Peter Doroba  wrote:

> I'd be interested! Is the METAR and TAF feature standard? I assume the
> airport ID is customizable?
>
> On Friday, December 4, 2020 at 8:51:43 PM UTC-5 Mahdi Al Husseini wrote:
>
>> Hi all,
>>
>> I am thinking about producing another batch of five B7971 clocks/displays
>> (without tubes), and would like to know who might be interested.
>>
>> Video of the clock/display in action: B7971 Dustoff IoT Board - YouTube
>> 
>>
>> These new boards are outfitted with the improved ESP32s instead of
>> ESP8266s. This is my last run of B7971 boards for the foreseeable future.
>> The cost would be $300 + shipping.
>>
>> Thank you.
>>
>> Mahdi
>>
>> --
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> .
>

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METAR_TAF_query.ino
Description: Binary data

[neonixie-l] Re: B7971 DUSTOFF Board Interest

[Peter Doroba]

I'd be interested! Is the METAR and TAF feature standard? I assume the 
airport ID is customizable?

On Friday, December 4, 2020 at 8:51:43 PM UTC-5 Mahdi Al Husseini wrote:

> Hi all,
>
> I am thinking about producing another batch of five B7971 clocks/displays 
> (without tubes), and would like to know who might be interested. 
>
> Video of the clock/display in action: B7971 Dustoff IoT Board - YouTube 
> 
>
> These new boards are outfitted with the improved ESP32s instead of 
> ESP8266s. This is my last run of B7971 boards for the foreseeable future. 
> The cost would be $300 + shipping. 
>
> Thank you. 
>
> Mahdi
>
>

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Re: [neonixie-l] New clock project with R|Z568M nixies

[Josh Girgis]

New to the group so I'll try my best to help.
You could consider twisted wire pairs for both i2C wires, and for the HV 
and HV ground. The rest of them Signal and ground, twisted wire pairs. That 
could help reduce the EMI.
Something to also try is the shielded cable David mentioned, just for the 
HV. Maybe a Triac cable?

Or maybe you could look into an I2C optical repeater if your wires are too 
long. That could help
https://www.digikey.com/en/products/detail/ixys-integrated-circuits-division/CPC5903GS/3182393
On Friday, December 4, 2020 at 6:43:39 PM UTC-5 David Pye wrote:

> Could you insert two-core screened cable for the HV and HV gnd in a daisy 
> chain setup, and reduce the amount of noise finding its' way into the I2C 
> bus?
>
> David
>
> On Fri, 4 Dec 2020 at 23:36, newxito  wrote:
>
>> I couldn't find a cat6 cable that was thin and flexible enough for this 
>> project. So I used a 5-wire normal cable and tested it before with a 2.5m 
>> connection. The I2C bus worked perfectly so I did all the wiring for the 
>> clock. The wiring was hell because all cables are inside tubes. In the end, 
>> all 8 sockets were ready to connect. Unfortunately, I did the bus test 
>> without high voltage. As soon as I have 170V on the 5th wire, there are 
>> many transmission errors on the I2C bus. Now I must start all over again 
>> ... 
>>
>> -- 
>>
> You received this message because you are subscribed to the Google Groups 
>> "neonixie-l" group.
>> To unsubscribe from this group and stop receiving emails from it, send an 
>> email to neonixie-l+...@googlegroups.com.
>>
> To view this discussion on the web, visit 
>> https://groups.google.com/d/msgid/neonixie-l/7801af98-abd6-4138-bea4-cb32aeafb153n%40googlegroups.com
>>  
>> 
>> .
>>
>

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[neonixie-l] B7971 DUSTOFF Board Interest

[Mahdi Al Husseini]

Hi all,

I am thinking about producing another batch of five B7971 clocks/displays
(without tubes), and would like to know who might be interested.

Video of the clock/display in action: B7971 Dustoff IoT Board - YouTube


These new boards are outfitted with the improved ESP32s instead of
ESP8266s. This is my last run of B7971 boards for the foreseeable future.
The cost would be $300 + shipping.

Thank you.

Mahdi

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Re: [neonixie-l] New clock project with R|Z568M nixies

[David Pye]

Could you insert two-core screened cable for the HV and HV gnd in a daisy
chain setup, and reduce the amount of noise finding its' way into the I2C
bus?

David

On Fri, 4 Dec 2020 at 23:36, newxito  wrote:

> I couldn't find a cat6 cable that was thin and flexible enough for this
> project. So I used a 5-wire normal cable and tested it before with a 2.5m
> connection. The I2C bus worked perfectly so I did all the wiring for the
> clock. The wiring was hell because all cables are inside tubes. In the end,
> all 8 sockets were ready to connect. Unfortunately, I did the bus test
> without high voltage. As soon as I have 170V on the 5th wire, there are
> many transmission errors on the I2C bus. Now I must start all over again
> ...
>
> --
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> 
> .
>

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[neonixie-l] For Sale: Jeff Thomas NixiSat CYLINDRICAL clock

[sas]

Jeff made only 10 of these. To say they are scarce is an understatement. 
Six beautiful, huge Z5680s in a one-of-a-kind case.

Cylindrical NixiSat 

Operational as of last use. Needs backup battery. Working on getting 
pictures. Unmodified. Software version has DST with old dates. Shipping 
method your choice, at your expense.

Questions and info, ask here. Offers and financial stuff thru private mail 
please.

Open to serious offers, please be reasonable and don't waste both of our 
time. I want this to go to a good home.

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Re: [neonixie-l] Elfin Rodan MG-17G

[Bill Notfaded]

These are technically nixie tubes that light up seven segments like a later 
LED display would.  I have some calculators with them and some brand new 
ones like you have.  I haven't used them for anything yet but the two 
calculators I have are neat.  One even runs on four C-cell batteries!!!

Bill

On Wednesday, November 18, 2020 at 4:41:56 AM UTC-7 Nick wrote:

> They've traditionally not been an expensive tube - a few years back, whole 
> trays were available for not a lot - individually maybe USD 10 to 15 a tube 
> now.
>
> I've used them in projects, but not for a few years. 
>
> NIck
>
> On Tuesday, 17 November 2020 at 21:30:03 UTC Jon wrote:
>
>> They're sweet little tubes, well worth having if you don't pay a fortune 
>> for them. This page is an interesting tangent on the subject:
>> http://www.imajeenyus.com/vacuum/20101115_second_panaplex/index.shtml
>>
>> Jon.
>>
>> On Tuesday, November 17, 2020 at 9:09:52 PM UTC w...@kitsunegari.net 
>> wrote:
>>
>>> Oh dear that sounds scary.
>>> I really hope they’ve been handled with care and, if they were, this 
>>> last trip with the postal services doesn’t break them.
>>> I’m not even sure if I’m going to use them though. I’d never even 
>>> thought about them actually being 7 segment Nixie tubes so something 
>>> inbetween Nixie and Numitron. Perhaps use them to trade for other tubes I 
>>> like. 
>>> No idea what the value of these things is nowadays.
>>>
>>>  
>>>
>>> *From:* neoni...@googlegroups.com  *On 
>>> Behalf Of *Paolo Cravero
>>> *Sent:* Tuesday, November 17, 2020 5:24 PM
>>> *To:* neoni...@googlegroups.com
>>> *Subject:* Re: [neonixie-l] Elfin Rodan MG-17G
>>>
>>>  
>>>
>>> Hello Yohan (or Park?).
>>>
>>>  
>>>
>>> Just came across 7 new MG-17G tubes which I never knew existed. Has 
>>> anyone ever done a clock with these tubes?
>>>
>>>  
>>>
>>> I "found" them inside a Inno-hit K80W battery operated portable 
>>> calculator, of which there are few similar models from the same year(s).
>>>
>>> In two tubes the top ring has gone loose and moves freely inside the 
>>> glass shorting segments together. Well, with some clever movements it can 
>>> be parked in the back of the tube still preserving functionality: it lasts 
>>> as long as nobody puts upside down the calculator.
>>>
>>>  
>>>
>>> Be gentle with your MG17-G's.
>>>
>>> Paolo
>>>
>>>  
>>>
>>> -- 
>>> You received this message because you are subscribed to a topic in the 
>>> Google Groups "neonixie-l" group.
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>>> https://groups.google.com/d/topic/neonixie-l/TdH4Z73j57k/unsubscribe.
>>> To unsubscribe from this group and all its topics, send an email to 
>>> neonixie-l+...@googlegroups.com.
>>> To view this discussion on the web, visit 
>>> https://groups.google.com/d/msgid/neonixie-l/CABj2VaY%2BKA%3Dib0WmQ%3DbDHL2_K_GZg7zKHcX_JWwtGcsFcW%3DZCA%40mail.gmail.com
>>>  
>>> 
>>> .
>>>
>>

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Re: [neonixie-l] Re: B7971

[Bill Notfaded]

Robert you might be able to bounce the tube with some padding around it and 
unshort the shorted segments.  It's been done before.  One trick is to tape 
it to a broom handle so you can force the entire tube against something 
like a stack of paper and get good force evenly distributed without 
breaking the tube.  I've heard this has been successful more times than 
one.  Often two segments one would overlap the other and get stuck touching 
it.

Bill

On Friday, December 4, 2020 at 4:34:42 AM UTC-7 Robert G. Schaffrath wrote:

> I got my first board from Poly Paks sometime in the late 1970’s. Probably 
> paid about $4 if I recall. One tube had shorted segments. I was about 15. 
> Then in 1979 I decided  to build a clock and bought three boards from 
> Meshna Electronics. After I assembled that, I decided I would get spare 
> tubes that were sold as NOS from Meshna. Bought six of them which I still 
> have wrapped in bubble wrap. I have a total of seven in a carton along with 
> the six in the clock. Also I still have the defective one that still lights 
> up but has problem segments. Thinking of selling it as a novelty as it is 
> not really useful for a clock. 
>
> On Thursday, December 3, 2020 at 11:46:10 PM UTC-5 nickja...@gmail.com 
> wrote:
>
>> Yeah,  that too.  And register a whole lot of machine guns before May 
>> 1986, and file mining claims,  then patent claims to get the land 
>> transferred to me before then too. And get someone to buy me a few B-17 and 
>> B-29s right after the war.  And a few 62 Corvettes, and a Ferrari 250 or 
>> two...
>>
>> On Thu, Dec 3, 2020, 6:33 PM Charles MacDonald  
>> wrote:
>>
>>> On 2020-12-03 4:45 p.m., gregebert wrote:
>>> > Did anyone in this forum get their 7971's from PolyPaks a long time 
>>> ago 
>>> > (1970s/1980s) ? I recall they were inexpensive, and many were sold in 
>>> > pairs along with the socket/driver board after being scrapped from 
>>> > Lectrascan units.
>>>
>>> Good Old ETCO Electronics 464 McGill St. In Montreal.  (store is long 
>>> gone)   Only got a couple of boards, which had the fingers broken off. 
>>> and a bunch of the tubes, Forget the price but proably a couple of bucks 
>>> (CDN) each.  If I could send a message back in time, I would tell my 
>>> former self to buy a few more, as well as some surplus 2A3, 6L6 and 6V6 
>>> tubes.
>>>
>>>
>>> -- 
>>> Charles MacDonald  VA3CPY   Stittsville Ontario
>>> cm...@zeusprune.ca  Just Beyond the Fringe
>>> No Microsoft Products were used in sending this e-mail.
>>>
>>> -- 
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>>> Groups "neonixie-l" group.
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>>> an email to neonixie-l+...@googlegroups.com.
>>>
>> To view this discussion on the web, visit 
>>> https://groups.google.com/d/msgid/neonixie-l/a614dcee-c540-e0f5-ca12-270f3c32a7d2%40zeusprune.ca
>>> .
>>>
>>

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Re: [neonixie-l] Digest for neonixie-l@googlegroups.com - 12 updates in 1 topic

[Nicholas Stock]

Clarke, pictures of individual segments lit up would be sufficient, no need
to go too far. 180V with a 20K resistor should be adequate for
illustration. I've not had a tube go bad on me (yet) but I have had the
occasional one with cross illuminated segments (that I couldn't unstick,
even with some pretty severe bashing!).

These tubes (on the whole) are remarkably resilient.

On Fri, Dec 4, 2020 at 8:27 AM Clarke Payne  wrote:

> Test advice anyone? Voltage like 180 and measure ma on each segment? Anode
> resistor value? Photo  of the tube with all segments lit up and total
> current?
>
> On Fri, Dec 4, 2020, 2:44 AM  wrote:
>
>> neonixie-l@googlegroups.com
>> 
>>  Google
>> Groups
>> 
>> 
>> Topic digest
>> View all topics
>> 
>>
>>- B7971
>><#m_-7693045224939130966_m_-4981977403820617115_group_thread_0> - 12
>>Updates
>>
>> B7971
>> 
>> Wo Tu : Dec 03 10:11AM -0800
>>
>> I sorted out my collection of tubes and was surprised , how much B7971 I
>> own.
>> Would like to sell some of these tubes. What do you think is a fair price
>> for one tube , or for six tubes ?
>> gregebert : Dec 03 10:26AM -0800
>>
>> If you dont already have a clock or other device with 7971's, I suggest
>> you
>> make one. Even though these tubes are a bit ugly, they are so enormous
>> and
>> versatile that you will be pleased with it. And keep a few spares. I
>> built
>> an 8-tube clock with 7971's a few years ago and I still like it, and wish
>> I
>> had time to add more features via software (it's RasPi based, so I'm
>> limited only by time and creativity).
>>
>> If you decide to sell, I've seen a lot of these being sold on Ebay for
>> well
>> over 100 USD, especially if you can show they are tested. You probably
>> already have several messages from other neonixie members who want to buy
>> some.
>>
>> On Thursday, December 3, 2020 at 10:11:26 AM UTC-8 Wo Tu wrote:
>>
>> Wo Tu : Dec 03 10:32AM -0800
>>
>> I‘ve built 2 clocks using B7971. But now I dont have space for more.
>>
>>
>> gregebert schrieb am Donnerstag, 3. Dezember 2020 um 19:26:41 UTC+1:
>>
>> Nicholas Stock : Dec 03 11:14AM -0800
>>
>> They're currently going for anywhere from 160 to 200 dollars on eBay.
>> Pictures of them being tested will help. Too rich for my blood at the
>> moment, but I have enough of them already :)
>>
>> Best of luck selling them!
>>
>> Cheers
>>
>> Nick
>>
>> Sent from my iPhone
>>
>> gregebert : Dec 03 01:45PM -0800
>>
>> Did anyone in this forum get their 7971's from PolyPaks a long time ago
>> (1970s/1980s) ? I recall they were inexpensive, and many were sold in
>> pairs
>> along with the socket/driver board after being scrapped from Lectrascan
>> units.
>>
>> Just curious how some of you acquired a large stash.
>>
>> On Thursday, December 3, 2020 at 11:15:03 AM UTC-8 Pramanicin wrote:
>>
>> Michail Wilson : Dec 03 09:52PM
>>
>> My two cents….
>>
>> I purchased all mine via ebay.
>> Many good and some I was scammed.
>>
>> The best batch I got was wrapped in old newspapers dated back to 1968.
>> Seller poorly packaged and several broke. I opened the box on video camera
>> cause I could hear the broken glass as soon as I received the box. He
>> refunded me for the broken ones. I still have many of the newspaper pages.
>> 29cent burger or 39cent cheeseburger, etc.
>>
>> In all, I got over 100 from auctions over a 5+ year span. Made clocks,
>> traded, and sold most back on ebay.
>>
>> My guess is that I paid an average of not much under $100 each.
>>
>> Michail Wilson
>> 206-920-6312
>>
>> From: neonixie-l@googlegroups.com  On
>> Behalf Of gregebert
>> Sent: Thursday, December 3, 2020 1:46 PM
>> To: neonixie-l 
>> Subject: Re: [neonixie-l] Re: B7971
>>
>> Did anyone in this forum get their 7971's from PolyPaks a long time ago
>> (1970s/1980s) ? I recall they were inexpensive, and many were sold in pairs
>> along with the socket/driver board after being scrapped from Lectrascan
>> units.
>>
>> Just curious how some of you acquired a large stash.
>> On Thursday, December 3, 2020 at 11:15:03 AM UTC-8 Pramanicin wrote:
>> They're currently going for anywhere from 160 to 200 dollars on eBay.
>> Pictures of them being tested will help. Too rich for my blood at the
>> moment, but I have enough of them already :)
>>
>> Best of luck selling them!
>>
>> Cheers
>>
>> Nick
>> Sent from my iPhone
>>
>>
>> On Dec 3, 2020, at 10:32, Wo Tu  wrote:
>> I‘ve built 2 clocks using B7971. But now I dont have space for more.
>>
>> gregebert schrieb am Donnerstag, 3. Dezember 2020 um 19:26:41 UTC+1:
>> If you

Re: [neonixie-l] Digest for neonixie-l@googlegroups.com - 12 updates in 1 topic

[Clarke Payne]

Test advice anyone? Voltage like 180 and measure ma on each segment? Anode
resistor value? Photo  of the tube with all segments lit up and total
current?

On Fri, Dec 4, 2020, 2:44 AM  wrote:

> neonixie-l@googlegroups.com
> 
>  Google
> Groups
> 
> 
> Topic digest
> View all topics
> 
>
>- B7971 <#m_-4981977403820617115_group_thread_0> - 12 Updates
>
> B7971
> 
> Wo Tu : Dec 03 10:11AM -0800
>
> I sorted out my collection of tubes and was surprised , how much B7971 I
> own.
> Would like to sell some of these tubes. What do you think is a fair price
> for one tube , or for six tubes ?
> gregebert : Dec 03 10:26AM -0800
>
> If you dont already have a clock or other device with 7971's, I suggest
> you
> make one. Even though these tubes are a bit ugly, they are so enormous and
> versatile that you will be pleased with it. And keep a few spares. I built
> an 8-tube clock with 7971's a few years ago and I still like it, and wish
> I
> had time to add more features via software (it's RasPi based, so I'm
> limited only by time and creativity).
>
> If you decide to sell, I've seen a lot of these being sold on Ebay for
> well
> over 100 USD, especially if you can show they are tested. You probably
> already have several messages from other neonixie members who want to buy
> some.
>
> On Thursday, December 3, 2020 at 10:11:26 AM UTC-8 Wo Tu wrote:
>
> Wo Tu : Dec 03 10:32AM -0800
>
> I‘ve built 2 clocks using B7971. But now I dont have space for more.
>
>
> gregebert schrieb am Donnerstag, 3. Dezember 2020 um 19:26:41 UTC+1:
>
> Nicholas Stock : Dec 03 11:14AM -0800
>
> They're currently going for anywhere from 160 to 200 dollars on eBay.
> Pictures of them being tested will help. Too rich for my blood at the
> moment, but I have enough of them already :)
>
> Best of luck selling them!
>
> Cheers
>
> Nick
>
> Sent from my iPhone
>
> gregebert : Dec 03 01:45PM -0800
>
> Did anyone in this forum get their 7971's from PolyPaks a long time ago
> (1970s/1980s) ? I recall they were inexpensive, and many were sold in
> pairs
> along with the socket/driver board after being scrapped from Lectrascan
> units.
>
> Just curious how some of you acquired a large stash.
>
> On Thursday, December 3, 2020 at 11:15:03 AM UTC-8 Pramanicin wrote:
>
> Michail Wilson : Dec 03 09:52PM
>
> My two cents….
>
> I purchased all mine via ebay.
> Many good and some I was scammed.
>
> The best batch I got was wrapped in old newspapers dated back to 1968.
> Seller poorly packaged and several broke. I opened the box on video camera
> cause I could hear the broken glass as soon as I received the box. He
> refunded me for the broken ones. I still have many of the newspaper pages.
> 29cent burger or 39cent cheeseburger, etc.
>
> In all, I got over 100 from auctions over a 5+ year span. Made clocks,
> traded, and sold most back on ebay.
>
> My guess is that I paid an average of not much under $100 each.
>
> Michail Wilson
> 206-920-6312
>
> From: neonixie-l@googlegroups.com  On Behalf
> Of gregebert
> Sent: Thursday, December 3, 2020 1:46 PM
> To: neonixie-l 
> Subject: Re: [neonixie-l] Re: B7971
>
> Did anyone in this forum get their 7971's from PolyPaks a long time ago
> (1970s/1980s) ? I recall they were inexpensive, and many were sold in pairs
> along with the socket/driver board after being scrapped from Lectrascan
> units.
>
> Just curious how some of you acquired a large stash.
> On Thursday, December 3, 2020 at 11:15:03 AM UTC-8 Pramanicin wrote:
> They're currently going for anywhere from 160 to 200 dollars on eBay.
> Pictures of them being tested will help. Too rich for my blood at the
> moment, but I have enough of them already :)
>
> Best of luck selling them!
>
> Cheers
>
> Nick
> Sent from my iPhone
>
>
> On Dec 3, 2020, at 10:32, Wo Tu  wrote:
> I‘ve built 2 clocks using B7971. But now I dont have space for more.
>
> gregebert schrieb am Donnerstag, 3. Dezember 2020 um 19:26:41 UTC+1:
> If you dont already have a clock or other device with 7971's, I suggest
> you make one. Even though these tubes are a bit ugly, they are so enormous
> and versatile that you will be pleased with it. And keep a few spares. I
> built an 8-tube clock with 7971's a few years ago and I still like it, and
> wish I had time to add more features via software (it's RasPi based, so I'm
> limited only by time and creativity).
>
> If you decide to sell, I've seen a lot of these being sold on Ebay for
> well over 100 USD, especially if you can show they are tested. You probably
> already have several messages from oth

Re: [neonixie-l] Re: B7971

[Robert G. Schaffrath]

I got my first board from Poly Paks sometime in the late 1970’s. Probably 
paid about $4 if I recall. One tube had shorted segments. I was about 15. 
Then in 1979 I decided  to build a clock and bought three boards from 
Meshna Electronics. After I assembled that, I decided I would get spare 
tubes that were sold as NOS from Meshna. Bought six of them which I still 
have wrapped in bubble wrap. I have a total of seven in a carton along with 
the six in the clock. Also I still have the defective one that still lights 
up but has problem segments. Thinking of selling it as a novelty as it is 
not really useful for a clock. 

On Thursday, December 3, 2020 at 11:46:10 PM UTC-5 nickja...@gmail.com 
wrote:

> Yeah,  that too.  And register a whole lot of machine guns before May 
> 1986, and file mining claims,  then patent claims to get the land 
> transferred to me before then too. And get someone to buy me a few B-17 and 
> B-29s right after the war.  And a few 62 Corvettes, and a Ferrari 250 or 
> two...
>
> On Thu, Dec 3, 2020, 6:33 PM Charles MacDonald  wrote:
>
>> On 2020-12-03 4:45 p.m., gregebert wrote:
>> > Did anyone in this forum get their 7971's from PolyPaks a long time ago 
>> > (1970s/1980s) ? I recall they were inexpensive, and many were sold in 
>> > pairs along with the socket/driver board after being scrapped from 
>> > Lectrascan units.
>>
>> Good Old ETCO Electronics 464 McGill St. In Montreal.  (store is long 
>> gone)   Only got a couple of boards, which had the fingers broken off. 
>> and a bunch of the tubes, Forget the price but proably a couple of bucks 
>> (CDN) each.  If I could send a message back in time, I would tell my 
>> former self to buy a few more, as well as some surplus 2A3, 6L6 and 6V6 
>> tubes.
>>
>>
>> -- 
>> Charles MacDonald  VA3CPY   Stittsville Ontario
>> cm...@zeusprune.ca  Just Beyond the Fringe
>> No Microsoft Products were used in sending this e-mail.
>>
>> -- 
>> You received this message because you are subscribed to the Google Groups 
>> "neonixie-l" group.
>> To unsubscribe from this group and stop receiving emails from it, send an 
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>>
> To view this discussion on the web, visit 
>> https://groups.google.com/d/msgid/neonixie-l/a614dcee-c540-e0f5-ca12-270f3c32a7d2%40zeusprune.ca
>> .
>>
>

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[neonixie-l] Re: Ecaterina Nixie clock project

['Bogdan Paduraru' via neonixie-l]

Dear All ,

I am still looking for some Dolam LL-555 , Burroughs B-50113 , National 
NL-50113 Nixie tubes .

Please let me know if you have such tubes .

Thank you very  much and wish you a nice weekend ahead !
Bogdan

On Wednesday, September 9, 2020 at 3:21:19 PM UTC+3 Bogdan Paduraru wrote:

>
> Dear Friends,
>
> Still interested .
>
> No one has some Polish Dolam LL-555 ?
>
> On Friday, August 14, 2020 at 3:27:27 PM UTC+3 Bogdan Paduraru wrote:
>
>> Hello all ,
>>
>> Still looking for B-50113 , or B-5035 nixie tubes .
>> Thnak you 
>> Bogdan 
>>
>> On Sunday, July 5, 2020 at 2:41:48 PM UTC+3 Bogdan Paduraru wrote:
>>
>>> Dear Friends ,
>>>
>>> I am still looking for some B-50113 , or B-5035 Nixie tubes  to display 
>>> T , R , N letters 
>>>
>>> If any ones have some available please drop me a note 
>>>
>>> Thank you very much and enjoy your Sunday !
>>>
>>> Bogdan
>>>
>>

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