New additions to the dial-up modem teardowns gallery. As usual yes I know a flickr album isn’t the best way to organize these. Even with Claude I still haven’t got around to making something better. No, you can’t steal my photos and create your own modem website.
Wang 9648/24e
Apparently manufactured by Nuvo, it is a pretty basic 9600 bps fax / 2400 bps data modem from 1992. It uses a Rockwell RCC224ATF data pump.
US Robotics Courier HST Dual Standard with V.32 bis and ASL “widebody”
I believe this may be the last “widebody” USR Courier released before switching to the narrower chassis we’re familiar with today. The modem I have is experiencing electrical problems that I haven’t figured out how to fix. So I can’t confirm if this is does HST at 14,400 bps or 16,800 bps (I’m assuming the latter), and I don’t have action photos of it yet. FCC ID CJE-0129, FCC Reg # CJE794-72748-MD-E, part number 1.014.327. It takes a 18 VAC power transformer with a male DIN-5 connector and the modem has a female DIN-5 socket.
My modem had several capacitors that leaked on the board and had started corroding traces. I replaced them but the unit still flickers on/off rapidly when I turn it on.
This one was pretty popular back in the day, BBSs and online service would advertise separate phone numbers “USR HST Dual Standard” meaning they could handle callers with V.32 bis standard (14,400 bps) modems or other USR Courier HST modems to get a speed boost at 16,800 bps.
US Robotics Courier HST Dual Standard power on clicks video
US Robotics Courier I-modem – internal
The collection isn’t strictly limited to external modems, this is an internal version of the modem that’s a combo ISDN TA and V.Everything that can do both digital and analog calls. Mainly so I can remember what jumper settings are there, COM 1-4 and IRQ 2/3/5/7 (why you no IRQ 10!). I have submitted these for the I-modem entry over on The Retro Web.
US Robotics Courier 14400 HST power supply
After figuring out the pinout and making my own power supply, I finally got my hands on an original (maybe? there’s no USR branding) power adapter for the Courier 14400 HST that wasn’t an insane amount of money. This is a triple voltage output, +5 V, +12 V, -12 V DC, Female DIN-5 connector on the transformer end and male DIN-5 socket on the modem. It was made by Multi Products Int’l part number WA512750/27 with no US Robotics model.
I was missing the COM pin on the adapter I made last year. It’s an absolute unit, nearly 4.5″ long and 2.25″ tall.
