[neonixie-l] ‘Burn’ marks on rear of B-7971 tubes

I have 9 tubes, 5 show no sign of any marks, 2 show marks on a couple of the connections and 2 show more extensive marks, all work perfectly. Are the ones with marks more likely to have a shorter life? Rob -- You received this message because you are subscribed to the Google Groups

Re: [neonixie-l] Nixie Tube Modem Test Set

I see it now, I thought that B was some other symbol On Mon, Apr 24, 2023, 1:00 PM Dekatron42 wrote: > I really do think it is a Burroughs B54-something. > > If you take a careful look at the last photo you can see the black socket > > [image: B-Socket-SK182.jpg] > > And compare it to this

[neonixie-l] Re: Interesting Dekatron

Yes, recently bought two for 25 Euros each, they came with boxes and were fully operational. /Martin On Monday, 24 April 2023 at 18:21:13 UTC+2 Nicholas Stock wrote: > >

[neonixie-l] Re: hello im wondering i brought a CERBERUS DZ10

I have bought most of mine around 25-50 Euros, the upper range with boxes and original packing in good condition, some I've gotten with original boxes although the auction didn't say so. I've seen some go in the 100 Euros range a few years ago. To my knowledge there are four colors on the

[neonixie-l] Interesting Dekatron

https://www.ebay.com/itm/CERBERUS-DZ10-DZ-10-TUBE-ROHRE-VALVE-LAMPE-NIXIE-NOMOTRON-COUNTER-NEON-DEKATRON-/266232916617?&_trksid=p2056016.l4276 Not my listing etc etc. Price is a bit outrageous though -- You received this message because you are subscribed to the Google Groups "neonixie-l"

[neonixie-l] hello im wondering i brought a CERBERUS DZ10

im wondering if i paid to much is someone able to let me know what the worth of the tube is but even if i did pay to much i just brought it to add to my collection -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group

Re: [neonixie-l] Nixie Tube Modem Test Set

I really do think it is a Burroughs B54-something. If you take a careful look at the last photo you can see the black socket [image: B-Socket-SK182.jpg] And compare it to this photo from Dieters webpage (rotated 180 degrees) [image: B-Socket-SK182-Dieter.jpg] so I think it is a Burroughs

[neonixie-l] HP 521D Nixie Tube Frequency Counter

In keeping with the recent discussion of early counters with thermometer displays, here's a similar item for collectors who prefer actual Nixie tubes: https://www.ebay.com/itm/234985922328 Terry Bowman, KA4HJH "The Mac Doctor"

Re: [neonixie-l] ‘Burn’ marks on rear of B-7971 tubes

I have a few of the mica-backed variety of 7971 tubes that do not show burns around the mica by connections. They don't seem to test any differently than the tubes that do show the markings. Most have the burn marks but none have ever failed in years of use. The earlier versions with wire

Re: [neonixie-l] ‘Burn’ marks on rear of B-7971 tubes

I have a variety of B7971's with different micas, 'burn' marks, pins in the top of the envelope etc etc. I have yet to have a tube fail on me in day to day use after many years. I don't think it's an indication of any life expectancy for these tubes they appear to be built like tanks. Now

Re: [neonixie-l] ‘Burn’ marks on rear of B-7971 tubes

I've only seen 2 types of functional failures in 7971's - One completely-dead segment (A gift to me; that's how I got started with 7971's) - Adjacent segments shorted together (it just happened one-day on my 8-tube clock w/o warning; very peculiar) I have one exhibit-only device