Why is the RF output on Bell Receivers Ch3 & 4.?

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Pinza

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Is there a reason why most Bell receivers and almost all other devices use Channels 3 or 4 for the RF output.?

I know that certain models from Bell, namely the Dual Tuners have an agile Modulated output but all the rest have either Channels 3 or 4.

Just curious why this is.

Similar question, which I posted in the Rogers Forum, is why is there NEVER a Channel #1 on Cable.? Any idea's. I guess I should ask you to post answers to the second question in this thread;

http://www.digitalhome.ca/forum/showpost.php?p=810507&postcount=1
 
According to Wikipedia, "This channel option was provided because it was rare to have broadcast channels 3 and 4 used in the same market. The choice allowed the user to select the unused channel in their area so that the connected device would be able to provide video and audio on an RF feed to the television without excessive interference from a broadcast signal."
 
In addition to reduced interference, I believe it has something to do with the bandwidth on those channels (higher bandwidth = better quality) as well as the fact that most other devices (including your tv or vcr) were all pretty much guaranteed to be able to receive on channel 3 or 4 whereas in "the old days" many tv sets originally couldn't tune above channel 13 without additional hardware.
 
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