On Jan 15, 5:53�pm, Mark Lloyd wrote:
On Thu, 14 Jan 2010 19:07:13 -0600, AZ Nomad

wrote:

[snip]

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.

That doesn't sound right, especially if the change in frequency as
small. Shouldn't it be something like the crystals used in old CB
radios?
--
Mark Lloydhttp://notstupid.us

Commercial tv transmitters arent just a matter of crystals they are
very expensive custom built to frequency, so they dont produce
interference on nearby channels ...........

plus every station needs at least a primary plus a secondary backup.

loss of operation for even a hour costs them bbig bucks