Steve entertained us with a presentations of the in’s and outs of Digital Amateur Television. He went to a significant effort setting up his transmitter and showing the block stages of equipment. A lot of detail was given about the importance of filters due to being allocated only 1Mhz below the commercial frequencies. Steve is keen to get more amateurs involved even if receiving only, (this can be done with a cheap Laser set top box and manually tuning it to 445.5Mhz). A really huge thankyou to Steve for an entertaining and informative evening.
Steve has provided a list of topics that would be useful to study up on if you are interested in Amateur TV:
- DVB-t (Digital Video Broadcasting – Terrestrial)
- Coded Orthogonal Frequency Division Multiplexing (COFDM)
- QPSK (Quadrature Phase Shift Keying)
- QAM (Quadrature Amplitude Modulation)
- MER (Modulation Error Ratio)
- FEC (Forward Error Correction)
- Guard Interval
- Carriers (2K & 8K)
- PID (Packet Identifier)
- LCN (Logical Channel Numbers)
