This information also applies to the original CC Radio II as well as the II/E

I did a podcast on the CC Radio II a couple of years ago in which I noted the 
new and changed features of the CC II over the original CC Radio and CC Radio 
plus models.

One of the big changes was the absence of the Television Receiving facility, 
this band was left out because of the change from the Analogue TV to Digital TV 
in the U.S., the TV band was replaced with the 2 metre ham band.

Many people have written to me privately asking me if I knew why this change 
was made and why the people at CCrane didn't include the digital TV band 
instead of the 2 metre Ham band.  I have to admit to not knowing an answer to 
that until a few hours ago when a friend of mine relayed information onto me 
from the tech people at CC which confirmed some of my own private thoughts on 
this matter and - as I now have confirmation - I can share with you the reasons 
for the absence of a Digital TV band.

When the Analogue TV band was in use all channels had their own dedicated 
frequency's on the spectrum for broadcasting thus the audio was there being 
transmitted and waiting for a compatible receiver to receive it.

The way Digital Television - and Digital Radio in Australia - is transmitted is 
quite different and one could say its revolutionary compared to older systems 
that were in use.

All the output from the combined Television stations - Audio and Video - is fed 
into what's called a multi plexer, this device encodes the various outputs into 
one stream and sends it to the transmitter which then transmits the digital 
signal for your Digital Television to decode.


Now a radio could do this but for a radio the decoding poses some challenging 
problems, the who signal has to be decoded which means that the video has to be 
decoded as well as the audio which takes quite some processing to do so its not 
like the old days when all the receiver had to do was to receive the audio and 
ignore the video where appropriate.

CCrane built some prototype receivers to see if the problem could be tackled 
and here's the real point, a set of 4 Alkaline D Cell batteries lasts 180 hours 
presently in the CC II/E but if a Digital TV Encoder is included then the 
battery life is only 7 minutes or thereabouts so you can see the extra power 
required for the processing and decoding of a signal which just isn't worth 
doing in a radio of this kind.

For those who want just audio from a tV broadcast then your best bet would be 
to buy a Set Top Box with audio outputs or a small Digital TV with an output 
which will allow powered speaker connection, I know in Australia several models 
of portable TV which can fit in your hand are available.



**********

Dane Trethowan
Skype: grtdane12
Phone US (213) 438-9741
Phone U.K. 01245 79 0598
Phone Australia (03) 9005 8589
Mobile: +61400494862
Fax +61397437954



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