Mystery Radio Gear A Long Way From Home

[EastCoastSunrise]

My school has an electronics club and often we get boxes of old hardware, mostly circuit boards and stuff like that from the 1970’s up to about the 90’s. Today I was digging trough a box of this old hardware and found these (pictures below). I have no idea what they do or where the came from. All I know is the AMB one says Culver City on top. And based on the other labels and the form factor it seemed like radio gear that went in to some kind of repeater. If anyone has any idea what these are and what they do I’d love to know. Also if it is old Culver City radio gear I’d love to know how it ended up 3,000 miles away in MA.

East

 

[a417]

Motorola Spectra TAC comparator cards (SQM = which i recall stood for Signal Quality Modules, might be wrong...been a long time)

Stuff like that gets sold on the ebays all the time.

 

[gmclam]

I worked for a company for many years that built custom stuff for the governement. We'd build panels, circuit boards and more to do whatever needed to be done. I'm sure there's plenty of others doing the same thing. We might do something like build one control panel that would control multiple other devices (security camera switcher, intercom, lighting control, etc.).

 

[EastCoastSunrise]

Motorola Spectra TAC comparator cards (SQM = which i recall stood for Signal Quality Modules, might be wrong...been a long time)

Stuff like that gets sold on the ebays all the time.

Hit the nail on the head. Thanks for all of the information about this!

 

[a417]

There are some legends on here who (at least used to) frequent Batlabs who live and breathe this stuff.

 

[d119]

I still do. My VHF ham repeater uses these very cards. You have some A/B series SQMs and a C series SQM.

 

[com501]

Our P25 ham repeater system for both VHF and UHF also use the exact same hardware. Can't beat it with Quantars.

 

[d119]

Our P25 ham repeater system for both VHF and UHF also use the exact same hardware. Can't beat it with Quantars.

Your post count is lacking.