On Thu, 14 Jan 2010 18:23:40 -0600, Mark Lloyd wrote:
[snip]


They had to buy all new equipment for the digital transition. You may
remember they ran their existing equipment on their old channels and
then added a complete set of equipment: transmitter, waveguides,
antennas, STL etc to transmit the "digital" signal while still keeping
the existing equipment in service.

For the stations around here, most of that was their existing backup
transmitter.

The biggest expense was not the switch to digital, but the move
to a new frequency. TV transmitters are built to operate on a single
frequency. To switch channels, you have to replace it.