Standalone prototype of a POCSAG base station: Linksys NSLU2 computer on the right, Debian Linux installed on the 512M USB memory stick, cheap USB hub and USB serial adapters from DealExtreme, connected to the Internet using a Siemens GPRS module (on top of Motorola radio, flat-rate multi-SIM data). Dials up automatically when powered on and redials the connection if it drops. POCSAG modem in the top right corner, Atmel microcontroller, original design by N2RVQ. Motorola GM340 transceiver transmitting on 144.975 MHz. ATI Wireless Corporate programmable pager receiving the paging messages and saying “beep”. There’s another receiver (FT-7800) on the background monitoring the 512 bps (yes, bits per second) transmissions. The tiny computer runs a transmitter client, which polls a pair of central servers for new messages which should be transmitted. Another server runs a DX cluster client which uploads DX spots using an HTTP JSON API to the servers. The servers authenticates both the transmitter clients and the message sources using HMAC-SHA1. oh7lzb.blogspot.com
visit the mw dx cluster www.skype.com
Video Rating: 5 / 5
Wow!! I have gotten WBAP’s signal in Reno, Nevada and Bakersfield, CA. But Europe! Wow!
did not know the Europeans can hear Bob Crowley’s Late night/early morning news reports on 820 WBAP. i bet you got to hear the Midnight Trucking Radio show.
wbap comes in well even on my indoor flag thanks for watching
Hi, What pins are you using to input the data into the radio? Is it Pin 5? if so did you have to make any modifications to the radio to get it to work?
@StrawChopper – I don’t actually know, OH2LAK made the cable for that. I don’t think any modifications were needed, just some configuration using the programming software.
Hi, Thanks, managed to sort it, had to configure the pins for the rear connector using the programming software, just like you said.
Hi, I’m trying to send messages to a pager from a Kantronics cnc capable POCSAG 9612 but not received my pager, I do wrong?
Hi, I’m trying to send messages to a pager from a Kantronics cnc capable POCSAG 9612 but not received my pager, I do wrong?
@oh7lzb Hi, I’m trying to send messages to a pager from a Kantronics cnc capable POCSAG 9612 but not received my pager, I do wrong?
@oh7lzb Hi, I’m trying to send messages to a pager from a Kantronics cnc capable POCSAG 9612 but not received my pager, I do wrong?
@oh7lzb Hi, I’m trying to send messages to a pager from a Kantronics cnc capable POCSAG 9612 but not received my pager, I do wrong?
@ea1ggb I never got one of those, but I think you need to use the ID number on the back of the pager. Also make sure the pager has a new crystal with the freq. you want to use.
@rudyiking The pagers we bought are programmable, so the RIC numbers you’re referring to aren’t printed on the pager, they can be set using the programming software and the keyboard. The frequency is configurable as well, so no crystal worries!