ACTIONSCAN49* wrote:
does anyone know why the public service has gone digital for?
what's wrong with analog?
Some arguments for digital:
- It can be used in a narrowband channel, which means more channels can fit in the band.
- It can work better in weak signal areas.
- Its easier to add encryption (since its already digital all you have to do is jumble the data).
- Its easier to add advanced data features (transmitter ID, remote radio programming/shutoff, location tracking, text messages, etc).
- Its easier to trunk, switch, and integrate with other systems as you don't have to do A/D conversion to transport the audio.
Don't get me wrong here, most of these things can (and have) been done with analog.
While on paper it can be proven that digital can do slightly better with a weak signal, it can also be argued that the human ear is capable of hearing intelligible audio amongst the static/dropout of a weak signal (much like its possible to watch analog TV despite a lot of static/snow in the picture).
Personally I think narrowband analog would be a better way to go and would have much better audio quality.
Unfortunately my opinion has about zero value to those who buy and sell digital radios.
:horse: