[vcf-midatlantic] Your First Modem? (was: Help me remember my first modem)
mcguire at neurotica.com
Wed Dec 29 01:27:46 UTC 2021
On 12/28/21 4:42 PM, Mike Loewen via vcf-midatlantic wrote:
>> Mine was a Livermore Data Systems model 71B 300-baud acoustic
>> coupler. Man did I run up some phone bills with that. I still have it.
> Mine was a 300 baud Novation J-Cat in 1983, connected to my TRS-80
> Model III. Direct connect, and I wrote a simple BASIC program to dial
> out by pulsing the hook relay.
Wow, nice, I remember those from ads.
> Dave, I have a Livermore 76B:
> From a 1979 issue of Datamation:
> LIVERMORE DATA SYSTEMS76B
> Bell 103/113A-compatible originate-only type
> Up to 450 bps using FSK modulation
> Asynchronous, half/full-duplex operation
> Acoustic with RS232B/C interface
> Features alternate voice-data
> Over 4,000 sold since 1975
Nice! My 71B is very nearly identical to that, except the left
switch on the rear has three positions, instead of two. I don't recall
what the other position is offhand.
In mine, the two lamps on the front were those cylindrical aluminum
incandescent cartridge bulbs, both of which were burnt out. I couldn't
get replacements at the time (I was ~13) so I replaced both of the bulbs
and their sockets with LEDs, padded with some hot glue around them.
Dave McGuire, AK4HZ
New Kensington, PA
More information about the vcf-midatlantic