This is essentially a portable Adds 580 terminal. It does have a builtin accoustic coupler, which probably works with 110 and 300 baud 103 dialup modem protocols.
Since this has been around the LA area for probably 40 years, it is interesting that the filter material on the back isn't powdered. I will remove and replace it.
Photos from ebay sale ended 5/30/2016
As nice a specimen of this terminal as I've seen.
Tuesday, May 31, 2016
Saturday, May 21, 2016
Sunday, May 15, 2016
This is the result of a lithium battery failure in progress. I'm afraid to open the bags, and am not sure how to dispose of the things. I fear if they are put into the recycle trail unwatched they will just be a source of detonation.
I trimmed off the leads nearst the batteries as possible, and there is still a small sensor board soldered to the battery terminals I need to figure out how to get off.
|Battery has forced the enclosure open. top is actually thin glass|
|View of top showing gap and original system enclosure|
|Top removed showing battery|
|Circuit board is forced up. System still works.|
|More direct view of the bow forced into the circuit|
|The battery is like two balloons blown up.|
|This is the nomenclature on the battery|
|lengthwise view of the bulged battery|