Cellphones

I was just tidying up around the office and I found one of our old cell phones.  It's  a Motorola Transportable phone of the late 80's, early 90's.  I put my comparatively large Samsung Alias 2 on top for comparison.
Why is it so large?  Well, all cellphones are composed of radio, battery and hand set.

This is one of two batteries in the Motorola.  Yes, the phone needed two of these!

The sizable battery compartment, with one battery removed. 

Here we have the handset, keypad on the back, and yes a two line display.   

Color display?  Of course blue backlit LCD.

 

These are some of the vintage radio I was using in Callbox applications in the day.  Left to right, Oki, Motorola 3W OEM ,Motorola OEM.  Also for reference a handset and my Samsung.  We used to be able to achieve 9600bps data over the analogue network with an MNP10 modem.  We also were authorized by Motorola to use their command interface, the 3-wire bus.

Now we have three more modern radios.  These, two Enforas, and one MultiTech are all data capable and digital. It's strange, instead of waiting 2 minutes for the modem to train we can now establish a IP connection in a mere second.