KAP and Pi

Communications The business-end of a mid 90's ISP: as many modems as can fit. These photos are circa October 1997. There were 60 modems in this built-in wardrobe by the time we sold the business in 1999. The red dot stickers indicate the modem has had the ROM chip replaced to upgrade the modem from 28.8kbps to 33.6kbps. This upgrade extended the life of the Spirit Viper modems for another couple of years, until 56kbps came along. Please let me know if you can identify the cartoon taped to the bottom shelf. Each modem needed 3 cables plugged in: power, serial data and telephone Power: in these photos, under the fan are 2 white boxes with LEDs on the front of them. These are the power supplies for most of the modems. Each box has 3 transformers, each transformer supplies power to 6 modems. This was a big saving for us: one mains power point for 18 modems. Many thanks to John for designing and building those. At a later date we built more and moved them all under the floor for space