Re: [neonixie-l] Spark arrestors?

When I saw this subject I was thinking of the Visoglow Neon Lightning Arrester that I bought NIB from Fair Radio Sales over 40 years ago. Never used it and only bought it for the novelty of a three terminal neon bulb in it. Found a picture of it online at

Re: [neonixie-l] Spark arrestors?

Am I reading that right, <5.5MBq in each tube? I have a couple of old spark gap tubes with Cs-137 in them used to calibrate isotope identifiers I have but being WWII vintage, likely not a uniform amount in each tube was used. A pint spot on inside of the glass, but gas is likely easier to fill

Re: [neonixie-l] Spark arrestors?

Ooh, barely $108 each! On Sat, Jun 24, 2023 at 11:56 PM Mac Doktor wrote: > > On Jun 25, 2023, at 12:21 AM, Nick Andrews wrote: > > Interesting. Bigger ones used in what? I have a box somewhere with old > railroad lightning assessors. > > > I was looking at these: >

Re: [neonixie-l] Spark arrestors?

> On Jun 25, 2023, at 12:21 AM, Nick Andrews > wrote: > > Interesting. Bigger ones used in what? I have a box somewhere with old > railroad lightning assessors. I was looking at these: https://www.aliexpress.us/item/3256804108987619.html

Re: [neonixie-l] Spark arrestors?

Interesting. Bigger ones used in what? I have a box somewhere with old railroad lightning assessors. On Sat, Jun 24, 2023, 7:30 PM Mac Doktor wrote: > > On Jun 24, 2023, at 7:17 PM, Audrey wrote: > > Hi, I found this listing online, definitely a spark arrestor. >

Re: [neonixie-l] Spark arrestors?

> On Jun 24, 2023, at 7:17 PM, Audrey wrote: > > Hi, I found this listing online, definitely a spark arrestor. > https://a.aliexpress.com/_mNkJM9O Is the cylinder in the middle an insulator? That would make sense. I really like the bigger ones. They contain

Re: [neonixie-l] Spark arrestors?

Hi, I found this listing online, definitely a spark arrestor. https://a.aliexpress.com/_mNkJM9O On Sat, Jun 24, 2023, 7:14 PM martin martin wrote: > All, > During an e-waste clean up, I found this board inside an older Toshiba > phone system. > The only ID I could see is D355, D425 and 152M. >