[GreenKeys] wire spring relays

[KC0NNC at aol.com]

Charles:

Those relays are certainly magnetic "memory" relays.  They rely upon the core 
being a magnetic memory type of iron very permeable, and with long lasting 
magnetic memory.  The chemistry of the nickel iron makes the difference.

The relays could have been used in any application where you needed to have a 
"power down" survival scenario.

The old core memories of the IBM 7090 days comes to mind.

These memories, would hold their "data" during a complete power outage. And 
when the system came back up, you just asked for a restart, and the system 
continued to compute from where it left off.

we now call that type of solid state memory "ROM"  or WORM  (write once, read 
many times)

I assume you have an application for those relays, they were indeed the best 
built signal relays in the world.  Gold or platinum/silver contacts.  

I regret the day that I walked by two (at the scrap yard) full 7' racks 
populated with 111c western electric repeater coils.  Must have been 400 coils.  
Had I not been dumb and stupid, I would have purchased the entire ton or so, and 
would still be selling them for $100 each? On Ebay.

take care, and 73's for now

Harv Smith



Harvey E. Smith
fka WA0BBG
nka KC0NNC

2020 Baculite Mesa Road
Pueblo, Colorado, 81001-2456
719 546 1418