Re: [neonixie-l] Date codes on ETL GR10x tubes...

2023-05-31 Thread Paul Andrews 
Heh. Live and learn!

On Wednesday, May 31, 2023 at 7:36:22 AM UTC-4 Jon wrote:

> Ah, that's the *other* ETL! Electronic Tubes Ltd of High Wycombe as 
> opposed to Ericsson Telephones Ltd of Beeston. It's the Ericsson ETL which 
> makes the nixies, dekatrons etc.
>
> Thanks Martin!
>
> Jon.
>
>
> On Wednesday, May 31, 2023 at 12:25:52 PM UTC+1 Dekatron42 wrote:
>
>> It does look like Paul got his information from here: 
>> https://www.radiomuseum.org/dsp_hersteller_detail.cfm?company_id=9901
>>
>> /Martin
>>
>> On Wednesday, 31 May 2023 at 11:06:10 UTC+2 Jon wrote:
>>
>>> Paul, would you mind sharing the basis for your comment about the 
>>> post-1957 Mullard/ETL connection? I've done a lot of work on ETL history 
>>> (visited what's left of their archives, talked to employees etc) and this 
>>> is news to me.
>>>
>>> Thanks,
>>>
>>> Jon.
>>>
>>> On Tuesday, May 30, 2023 at 8:21:34 PM UTC+1 Paul Andrews wrote:
>>>
 After 1957 ETL was owned by Mullard. The date codes for Mullard 
 (Philips) tubes are described here 
 . It looks most likely that 
 the first digit is the year number, the second letter is the month. The 
 one 
 I have is labelled 0B, which I would read as February 1960. Its a bit of a 
 mess though.

 On Tuesday, May 30, 2023 at 1:15:02 PM UTC-4 gregebert wrote:

> >  but there is a set of 6 matched GR114/CD47s (will sell only as a 
> set) 
> > loads of NIMOs
>
> Well, that's going to be the auction of the century. 
>
> On Tuesday, May 30, 2023 at 10:06:59 AM UTC-7 Nick wrote:
>
>> Thanks for asking, but I really don't know yet. There's a HUGE number 
>> of tubes to go through (many 1000s). A few of the exotica have been sold 
>> to 
>> other collectors, but there is a set of 6 matched GR114/CD47s (will sell 
>> only as a set) amongst the stuff in the store, plus many other rare 
>> tubes.
>>
>> I'll start doing auctions in a few months and will provide early 
>> warning here. Some of the stuff is extremely rare, including F9020, 
>> NEO-5000M, NEO-8000, loads of NIMOs, Pandicons, Pixies, Panaplex, 
>> Alphanumeric tubes etc.
>>
>> On Tuesday, 30 May 2023 at 17:55:20 UTC+1 Robert wrote:
>>
>>> Hi
>>>
>>> What would the cost be per tube, used or NIB?
>>>
>>> Thanks
>>> Rob
>>>
>>> On 30 May 2023, at 17:40, 'Nick' via neonixie-l <
>>> neoni...@googlegroups.com> wrote:
>>>
>>> So here's the thing: I'm rationalising my rather large nixie 
>>> collection over the next few months I don't need lots of every 
>>> nixie.
>>>
>>>
>>> I'm starting with a stash of ETL GR10Gs in varying condition - one 
>>> has a broken 7 internally, 3 others are "dark" to the point of ... just 
>>> useable... another 10 are in "used but good to OK condition" and the 
>>> rest 
>>> are NIB.
>>>
>>> They're a strange, early, tube, needing a Va of 250VDC and an Ra of 
>>> only 10K for most digits, but 18K2 for the "1" and 14K7 for the "7", 
>>> i.e. 
>>> the 1 & 7 also have cathode resistors... They have no Hg doping, so the 
>>> life of the tube under controlled circumstances is only 5,000 hours... 
>>> Early stuff.
>>>
>>> But they are a BEAUTIFUL tube... I mean, REALLY BEAUTIFUL (IMHO)...
>>>
>>> The date codes on them are just two characters, e.g. "OJ" or "RC" 
>>> etc. Range of ETL logos too...
>>>
>>> Anyone have a decode table for these?
>>>
>>> Thanks
>>>
>>> Nick
>>>
>>>
>>> -- 
>>> 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/39c22549-5fab-417d-8518-7888e39cb62en%40googlegroups.com
>>>  
>>> 
>>> .
>>>
>>>

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Re: [neonixie-l] Date codes on ETL GR10x tubes...

2023-05-31 Thread Jon 
Ah, that's the *other* ETL! Electronic Tubes Ltd of High Wycombe as opposed 
to Ericsson Telephones Ltd of Beeston. It's the Ericsson ETL which makes 
the nixies, dekatrons etc.

Thanks Martin!

Jon.


On Wednesday, May 31, 2023 at 12:25:52 PM UTC+1 Dekatron42 wrote:

> It does look like Paul got his information from here: 
> https://www.radiomuseum.org/dsp_hersteller_detail.cfm?company_id=9901
>
> /Martin
>
> On Wednesday, 31 May 2023 at 11:06:10 UTC+2 Jon wrote:
>
>> Paul, would you mind sharing the basis for your comment about the 
>> post-1957 Mullard/ETL connection? I've done a lot of work on ETL history 
>> (visited what's left of their archives, talked to employees etc) and this 
>> is news to me.
>>
>> Thanks,
>>
>> Jon.
>>
>> On Tuesday, May 30, 2023 at 8:21:34 PM UTC+1 Paul Andrews wrote:
>>
>>> After 1957 ETL was owned by Mullard. The date codes for Mullard 
>>> (Philips) tubes are described here 
>>> . It looks most likely that the 
>>> first digit is the year number, the second letter is the month. The one I 
>>> have is labelled 0B, which I would read as February 1960. Its a bit of a 
>>> mess though.
>>>
>>> On Tuesday, May 30, 2023 at 1:15:02 PM UTC-4 gregebert wrote:
>>>
 >  but there is a set of 6 matched GR114/CD47s (will sell only as a 
 set) 
 > loads of NIMOs

 Well, that's going to be the auction of the century. 

 On Tuesday, May 30, 2023 at 10:06:59 AM UTC-7 Nick wrote:

> Thanks for asking, but I really don't know yet. There's a HUGE number 
> of tubes to go through (many 1000s). A few of the exotica have been sold 
> to 
> other collectors, but there is a set of 6 matched GR114/CD47s (will sell 
> only as a set) amongst the stuff in the store, plus many other rare tubes.
>
> I'll start doing auctions in a few months and will provide early 
> warning here. Some of the stuff is extremely rare, including F9020, 
> NEO-5000M, NEO-8000, loads of NIMOs, Pandicons, Pixies, Panaplex, 
> Alphanumeric tubes etc.
>
> On Tuesday, 30 May 2023 at 17:55:20 UTC+1 Robert wrote:
>
>> Hi
>>
>> What would the cost be per tube, used or NIB?
>>
>> Thanks
>> Rob
>>
>> On 30 May 2023, at 17:40, 'Nick' via neonixie-l <
>> neoni...@googlegroups.com> wrote:
>>
>> So here's the thing: I'm rationalising my rather large nixie 
>> collection over the next few months I don't need lots of every nixie.
>>
>>
>> I'm starting with a stash of ETL GR10Gs in varying condition - one 
>> has a broken 7 internally, 3 others are "dark" to the point of ... just 
>> useable... another 10 are in "used but good to OK condition" and the 
>> rest 
>> are NIB.
>>
>> They're a strange, early, tube, needing a Va of 250VDC and an Ra of 
>> only 10K for most digits, but 18K2 for the "1" and 14K7 for the "7", 
>> i.e. 
>> the 1 & 7 also have cathode resistors... They have no Hg doping, so the 
>> life of the tube under controlled circumstances is only 5,000 hours... 
>> Early stuff.
>>
>> But they are a BEAUTIFUL tube... I mean, REALLY BEAUTIFUL (IMHO)...
>>
>> The date codes on them are just two characters, e.g. "OJ" or "RC" 
>> etc. Range of ETL logos too...
>>
>> Anyone have a decode table for these?
>>
>> Thanks
>>
>> Nick
>>
>>
>> -- 
>> 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/39c22549-5fab-417d-8518-7888e39cb62en%40googlegroups.com
>>  
>> 
>> .
>>
>>

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Re: [neonixie-l] Date codes on ETL GR10x tubes...

2023-05-31 Thread Dekatron42 
It does look like Paul got his information from 
here: https://www.radiomuseum.org/dsp_hersteller_detail.cfm?company_id=9901

/Martin

On Wednesday, 31 May 2023 at 11:06:10 UTC+2 Jon wrote:

> Paul, would you mind sharing the basis for your comment about the 
> post-1957 Mullard/ETL connection? I've done a lot of work on ETL history 
> (visited what's left of their archives, talked to employees etc) and this 
> is news to me.
>
> Thanks,
>
> Jon.
>
> On Tuesday, May 30, 2023 at 8:21:34 PM UTC+1 Paul Andrews wrote:
>
>> After 1957 ETL was owned by Mullard. The date codes for Mullard (Philips) 
>> tubes are described here . It 
>> looks most likely that the first digit is the year number, the second 
>> letter is the month. The one I have is labelled 0B, which I would read as 
>> February 1960. Its a bit of a mess though.
>>
>> On Tuesday, May 30, 2023 at 1:15:02 PM UTC-4 gregebert wrote:
>>
>>> >  but there is a set of 6 matched GR114/CD47s (will sell only as a set) 
>>> > loads of NIMOs
>>>
>>> Well, that's going to be the auction of the century. 
>>>
>>> On Tuesday, May 30, 2023 at 10:06:59 AM UTC-7 Nick wrote:
>>>
 Thanks for asking, but I really don't know yet. There's a HUGE number 
 of tubes to go through (many 1000s). A few of the exotica have been sold 
 to 
 other collectors, but there is a set of 6 matched GR114/CD47s (will sell 
 only as a set) amongst the stuff in the store, plus many other rare tubes.

 I'll start doing auctions in a few months and will provide early 
 warning here. Some of the stuff is extremely rare, including F9020, 
 NEO-5000M, NEO-8000, loads of NIMOs, Pandicons, Pixies, Panaplex, 
 Alphanumeric tubes etc.

 On Tuesday, 30 May 2023 at 17:55:20 UTC+1 Robert wrote:

> Hi
>
> What would the cost be per tube, used or NIB?
>
> Thanks
> Rob
>
> On 30 May 2023, at 17:40, 'Nick' via neonixie-l <
> neoni...@googlegroups.com> wrote:
>
> So here's the thing: I'm rationalising my rather large nixie 
> collection over the next few months I don't need lots of every nixie.
>
>
> I'm starting with a stash of ETL GR10Gs in varying condition - one has 
> a broken 7 internally, 3 others are "dark" to the point of ... just 
> useable... another 10 are in "used but good to OK condition" and the rest 
> are NIB.
>
> They're a strange, early, tube, needing a Va of 250VDC and an Ra of 
> only 10K for most digits, but 18K2 for the "1" and 14K7 for the "7", i.e. 
> the 1 & 7 also have cathode resistors... They have no Hg doping, so the 
> life of the tube under controlled circumstances is only 5,000 hours... 
> Early stuff.
>
> But they are a BEAUTIFUL tube... I mean, REALLY BEAUTIFUL (IMHO)...
>
> The date codes on them are just two characters, e.g. "OJ" or "RC" etc. 
> Range of ETL logos too...
>
> Anyone have a decode table for these?
>
> Thanks
>
> Nick
>
>
> -- 
> 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/39c22549-5fab-417d-8518-7888e39cb62en%40googlegroups.com
>  
> 
> .
>
>

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Re: [neonixie-l] Date codes on ETL GR10x tubes...

2023-05-31 Thread Jon 
Paul, would you mind sharing the basis for your comment about the post-1957 
Mullard/ETL connection? I've done a lot of work on ETL history (visited 
what's left of their archives, talked to employees etc) and this is news to 
me.

Thanks,

Jon.

On Tuesday, May 30, 2023 at 8:21:34 PM UTC+1 Paul Andrews wrote:

> After 1957 ETL was owned by Mullard. The date codes for Mullard (Philips) 
> tubes are described here . It 
> looks most likely that the first digit is the year number, the second 
> letter is the month. The one I have is labelled 0B, which I would read as 
> February 1960. Its a bit of a mess though.
>
> On Tuesday, May 30, 2023 at 1:15:02 PM UTC-4 gregebert wrote:
>
>> >  but there is a set of 6 matched GR114/CD47s (will sell only as a set) 
>> > loads of NIMOs
>>
>> Well, that's going to be the auction of the century. 
>>
>> On Tuesday, May 30, 2023 at 10:06:59 AM UTC-7 Nick wrote:
>>
>>> Thanks for asking, but I really don't know yet. There's a HUGE number of 
>>> tubes to go through (many 1000s). A few of the exotica have been sold to 
>>> other collectors, but there is a set of 6 matched GR114/CD47s (will sell 
>>> only as a set) amongst the stuff in the store, plus many other rare tubes.
>>>
>>> I'll start doing auctions in a few months and will provide early warning 
>>> here. Some of the stuff is extremely rare, including F9020, NEO-5000M, 
>>> NEO-8000, loads of NIMOs, Pandicons, Pixies, Panaplex, Alphanumeric tubes 
>>> etc.
>>>
>>> On Tuesday, 30 May 2023 at 17:55:20 UTC+1 Robert wrote:
>>>
 Hi

 What would the cost be per tube, used or NIB?

 Thanks
 Rob

 On 30 May 2023, at 17:40, 'Nick' via neonixie-l <
 neoni...@googlegroups.com> wrote:

 So here's the thing: I'm rationalising my rather large nixie 
 collection over the next few months I don't need lots of every nixie.


 I'm starting with a stash of ETL GR10Gs in varying condition - one has 
 a broken 7 internally, 3 others are "dark" to the point of ... just 
 useable... another 10 are in "used but good to OK condition" and the rest 
 are NIB.

 They're a strange, early, tube, needing a Va of 250VDC and an Ra of 
 only 10K for most digits, but 18K2 for the "1" and 14K7 for the "7", i.e. 
 the 1 & 7 also have cathode resistors... They have no Hg doping, so the 
 life of the tube under controlled circumstances is only 5,000 hours... 
 Early stuff.

 But they are a BEAUTIFUL tube... I mean, REALLY BEAUTIFUL (IMHO)...

 The date codes on them are just two characters, e.g. "OJ" or "RC" etc. 
 Range of ETL logos too...

 Anyone have a decode table for these?

 Thanks

 Nick


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Re: [neonixie-l] Date codes on ETL GR10x tubes...

2023-05-30 Thread Paul Andrews 
After 1957 ETL was owned by Mullard. The date codes for Mullard (Philips) 
tubes are described here . It looks 
most likely that the first digit is the year number, the second letter is 
the month. The one I have is labelled 0B, which I would read as February 
1960. Its a bit of a mess though.

On Tuesday, May 30, 2023 at 1:15:02 PM UTC-4 gregebert wrote:

> >  but there is a set of 6 matched GR114/CD47s (will sell only as a set) 
> > loads of NIMOs
>
> Well, that's going to be the auction of the century. 
>
> On Tuesday, May 30, 2023 at 10:06:59 AM UTC-7 Nick wrote:
>
>> Thanks for asking, but I really don't know yet. There's a HUGE number of 
>> tubes to go through (many 1000s). A few of the exotica have been sold to 
>> other collectors, but there is a set of 6 matched GR114/CD47s (will sell 
>> only as a set) amongst the stuff in the store, plus many other rare tubes.
>>
>> I'll start doing auctions in a few months and will provide early warning 
>> here. Some of the stuff is extremely rare, including F9020, NEO-5000M, 
>> NEO-8000, loads of NIMOs, Pandicons, Pixies, Panaplex, Alphanumeric tubes 
>> etc.
>>
>> On Tuesday, 30 May 2023 at 17:55:20 UTC+1 Robert wrote:
>>
>>> Hi
>>>
>>> What would the cost be per tube, used or NIB?
>>>
>>> Thanks
>>> Rob
>>>
>>> On 30 May 2023, at 17:40, 'Nick' via neonixie-l <
>>> neoni...@googlegroups.com> wrote:
>>>
>>> So here's the thing: I'm rationalising my rather large nixie collection 
>>> over the next few months I don't need lots of every nixie.
>>>
>>>
>>> I'm starting with a stash of ETL GR10Gs in varying condition - one has a 
>>> broken 7 internally, 3 others are "dark" to the point of ... just 
>>> useable... another 10 are in "used but good to OK condition" and the rest 
>>> are NIB.
>>>
>>> They're a strange, early, tube, needing a Va of 250VDC and an Ra of only 
>>> 10K for most digits, but 18K2 for the "1" and 14K7 for the "7", i.e. the 1 
>>> & 7 also have cathode resistors... They have no Hg doping, so the life of 
>>> the tube under controlled circumstances is only 5,000 hours... Early stuff.
>>>
>>> But they are a BEAUTIFUL tube... I mean, REALLY BEAUTIFUL (IMHO)...
>>>
>>> The date codes on them are just two characters, e.g. "OJ" or "RC" etc. 
>>> Range of ETL logos too...
>>>
>>> Anyone have a decode table for these?
>>>
>>> Thanks
>>>
>>> Nick
>>>
>>>
>>> -- 
>>> 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/39c22549-5fab-417d-8518-7888e39cb62en%40googlegroups.com
>>>  
>>> 
>>> .
>>>
>>>

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Re: [neonixie-l] Date codes on ETL GR10x tubes...

2023-05-30 Thread gregebert 
>  but there is a set of 6 matched GR114/CD47s (will sell only as a set) 
> loads of NIMOs

Well, that's going to be the auction of the century. 

On Tuesday, May 30, 2023 at 10:06:59 AM UTC-7 Nick wrote:

> Thanks for asking, but I really don't know yet. There's a HUGE number of 
> tubes to go through (many 1000s). A few of the exotica have been sold to 
> other collectors, but there is a set of 6 matched GR114/CD47s (will sell 
> only as a set) amongst the stuff in the store, plus many other rare tubes.
>
> I'll start doing auctions in a few months and will provide early warning 
> here. Some of the stuff is extremely rare, including F9020, NEO-5000M, 
> NEO-8000, loads of NIMOs, Pandicons, Pixies, Panaplex, Alphanumeric tubes 
> etc.
>
> On Tuesday, 30 May 2023 at 17:55:20 UTC+1 Robert wrote:
>
>> Hi
>>
>> What would the cost be per tube, used or NIB?
>>
>> Thanks
>> Rob
>>
>> On 30 May 2023, at 17:40, 'Nick' via neonixie-l <
>> neoni...@googlegroups.com> wrote:
>>
>> So here's the thing: I'm rationalising my rather large nixie collection 
>> over the next few months I don't need lots of every nixie.
>>
>>
>> I'm starting with a stash of ETL GR10Gs in varying condition - one has a 
>> broken 7 internally, 3 others are "dark" to the point of ... just 
>> useable... another 10 are in "used but good to OK condition" and the rest 
>> are NIB.
>>
>> They're a strange, early, tube, needing a Va of 250VDC and an Ra of only 
>> 10K for most digits, but 18K2 for the "1" and 14K7 for the "7", i.e. the 1 
>> & 7 also have cathode resistors... They have no Hg doping, so the life of 
>> the tube under controlled circumstances is only 5,000 hours... Early stuff.
>>
>> But they are a BEAUTIFUL tube... I mean, REALLY BEAUTIFUL (IMHO)...
>>
>> The date codes on them are just two characters, e.g. "OJ" or "RC" etc. 
>> Range of ETL logos too...
>>
>> Anyone have a decode table for these?
>>
>> Thanks
>>
>> Nick
>>
>>
>> -- 
>> 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/39c22549-5fab-417d-8518-7888e39cb62en%40googlegroups.com
>>  
>> 
>> .
>>
>>

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Re: [neonixie-l] Date codes on ETL GR10x tubes...

2023-05-30 Thread Jasper nagle 
good to hear you are passing you collection on, im a newish collector so
you bet i'm going to be bidding on them auctions

On Wed, May 31, 2023 at 1:07 AM 'Nick' via neonixie-l <
neonixie-l@googlegroups.com> wrote:

> Thanks for asking, but I really don't know yet. There's a HUGE number of
> tubes to go through (many 1000s). A few of the exotica have been sold to
> other collectors, but there is a set of 6 matched GR114/CD47s (will sell
> only as a set) amongst the stuff in the store, plus many other rare tubes.
>
> I'll start doing auctions in a few months and will provide early warning
> here. Some of the stuff is extremely rare, including F9020, NEO-5000M,
> NEO-8000, loads of NIMOs, Pandicons, Pixies, Panaplex, Alphanumeric tubes
> etc.
>
> On Tuesday, 30 May 2023 at 17:55:20 UTC+1 Robert wrote:
>
>> Hi
>>
>> What would the cost be per tube, used or NIB?
>>
>> Thanks
>> Rob
>>
>> On 30 May 2023, at 17:40, 'Nick' via neonixie-l <
>> neoni...@googlegroups.com> wrote:
>>
>> So here's the thing: I'm rationalising my rather large nixie collection
>> over the next few months I don't need lots of every nixie.
>>
>>
>> I'm starting with a stash of ETL GR10Gs in varying condition - one has a
>> broken 7 internally, 3 others are "dark" to the point of ... just
>> useable... another 10 are in "used but good to OK condition" and the rest
>> are NIB.
>>
>> They're a strange, early, tube, needing a Va of 250VDC and an Ra of only
>> 10K for most digits, but 18K2 for the "1" and 14K7 for the "7", i.e. the 1
>> & 7 also have cathode resistors... They have no Hg doping, so the life of
>> the tube under controlled circumstances is only 5,000 hours... Early stuff.
>>
>> But they are a BEAUTIFUL tube... I mean, REALLY BEAUTIFUL (IMHO)...
>>
>> The date codes on them are just two characters, e.g. "OJ" or "RC" etc.
>> Range of ETL logos too...
>>
>> Anyone have a decode table for these?
>>
>> Thanks
>>
>> Nick
>>
>>
>> --
>> 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/39c22549-5fab-417d-8518-7888e39cb62en%40googlegroups.com
>> 
>> .
>>
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Re: [neonixie-l] Date codes on ETL GR10x tubes...

2023-05-30 Thread 'Nick' via neonixie-l 
Thanks for asking, but I really don't know yet. There's a HUGE number of 
tubes to go through (many 1000s). A few of the exotica have been sold to 
other collectors, but there is a set of 6 matched GR114/CD47s (will sell 
only as a set) amongst the stuff in the store, plus many other rare tubes.

I'll start doing auctions in a few months and will provide early warning 
here. Some of the stuff is extremely rare, including F9020, NEO-5000M, 
NEO-8000, loads of NIMOs, Pandicons, Pixies, Panaplex, Alphanumeric tubes 
etc.

On Tuesday, 30 May 2023 at 17:55:20 UTC+1 Robert wrote:

> Hi
>
> What would the cost be per tube, used or NIB?
>
> Thanks
> Rob
>
> On 30 May 2023, at 17:40, 'Nick' via neonixie-l  
> wrote:
>
> So here's the thing: I'm rationalising my rather large nixie collection 
> over the next few months I don't need lots of every nixie.
>
>
> I'm starting with a stash of ETL GR10Gs in varying condition - one has a 
> broken 7 internally, 3 others are "dark" to the point of ... just 
> useable... another 10 are in "used but good to OK condition" and the rest 
> are NIB.
>
> They're a strange, early, tube, needing a Va of 250VDC and an Ra of only 
> 10K for most digits, but 18K2 for the "1" and 14K7 for the "7", i.e. the 1 
> & 7 also have cathode resistors... They have no Hg doping, so the life of 
> the tube under controlled circumstances is only 5,000 hours... Early stuff.
>
> But they are a BEAUTIFUL tube... I mean, REALLY BEAUTIFUL (IMHO)...
>
> The date codes on them are just two characters, e.g. "OJ" or "RC" etc. 
> Range of ETL logos too...
>
> Anyone have a decode table for these?
>
> Thanks
>
> Nick
>
>
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>  
> 
> .
>
>

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Re: [neonixie-l] Date codes on ETL GR10x tubes...

2023-05-30 Thread Robert 
HiWhat would the cost be per tube, used or NIB?ThanksRobOn 30 May 2023, at 17:40, 'Nick' via neonixie-l  wrote:So here's the thing: I'm rationalising my rather large nixie collection over the next few months I don't need lots of every nixie.I'm starting with a stash of ETL GR10Gs in varying condition - one has a broken 7 internally, 3 others are "dark" to the point of ... just useable... another 10 are in "used but good to OK condition" and the rest are NIB.They're a strange, early, tube, needing a Va of 250VDC and an Ra of only 10K for most digits, but 18K2 for the "1" and 14K7 for the "7", i.e. the 1 & 7 also have cathode resistors... They have no Hg doping, so the life of the tube under controlled circumstances is only 5,000 hours... Early stuff.But they are a BEAUTIFUL tube... I mean, REALLY BEAUTIFUL (IMHO)...The date codes on them are just two characters, e.g. "OJ" or "RC" etc. Range of ETL logos too...Anyone have a decode table for these?ThanksNick



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