Amiga Hardware DatabaseManufacturer “M. Hell Datentechnik”
1 expansion in database
Manufacturer M. Hell Datentechnik, Germany | Date 1990 | Amiga any Amiga | Interface joystick port |
- Radio Data Decoder
- decoder for data transmissions over radio
- audio frequency signal supported (minimum 100mV RMS) - a radio receiver is needed that provides the demodulated AF signal
- supports the following modes:
- Fax with 128 grayscale levels, with frequency modulation on a 1900 Hz subcarrier with maximum frequency deviations of 800 Hz, 600 Hz, and 300 Hz
- Fax with 128 grayscale levels, with amplitude modulation, as used by orbiting weather satellites and Meteosat
- SSTV with 128 grayscale levels, with frequency modulation on a 1900 Hz subcarrier with maximum frequency deviation of 800 Hz, sync pulse evaluation via analog filter
- Packet Radio or High-Speed RTTY via digital filter path
- RTTY, Amtor, NAVTEX, CW via filter converter
- 256-level raw data for further evaluation by the software
- 1× RCA socket for radio signal input
- 1× 3.5mm stereo plug for PTT control signal and AF tone for Packet Radio AFSK
- inner contact: PTT control
- middle contact: 1200/2200 Hz tone for Packet Radio
- outer contact: ground, to be connected to cable shielding
- control to adjust filter resonance frequency at the front panel
- 9 pin DSUB connector, connects to Joystick port of the Amiga
- LEDs on the front panel indicate operating mode, sync status and overload condition
- external power supply (8-12V DC, 130mA, center pin positive)
- dimensions of housing: 107×148×56mm