Video Transmission
| Never would have thought
transmitting video could be such an art. Well, truly transmitting video
images is not much of an art. Transmitting video over long distances and
maintaining quality is an art.
The Original System The original video transmission system was pretty well set to go, I had completed many hours (really days) of research into Amateur Television (ATV for short). The video system was going to transmit at a frequency of 439.25 MHz, this is the 70cm band for amateur radio operators. (This frequency can be picked up by anyone with an antenna on their roof and a cable ready television, if you set the TV to cable channel 59 it is close enough to easily receive the signal.) PC Electronics was contacted about building a filter to remove extra radio interference from the flight receiver. After some field testing of the system installed in the airplane everything was a go, or so I thought... I soon realized that the power consumption of the television transmitter at 439.25 MHz was just too high for the onboard batteries and generator. It would take some major reworking to have a power supply that would give a significant transmission distance. The 70cm system was thrown out (anybody need a complete ATV system including 16 foot Yagi antenna?? ) Pictured below are the various components. |
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