Geoff.D
Honorary Master
One can be fooled by the radius these so-called 'digital antennas' can scan. Some of them say they can scan for channels that are 120 miles away. Presumably, if they were amplified, there is a better chance of getting signal than bunny ears, no? Amazon has digital antennas that ship to SA:
https://www.amazon.com/Latest-Ampli...gital+antenna&qid=1556958902&s=gateway&sr=8-3
As I said a non-active fancy indoor antenna is just a fancy bunny ears. It has to be an active device with its own power source to possibly have any value at all.
Fact:
- Amplifying a lousy incoming signal amplifies the signal AND the background noise!
- Marginal success ONLY IF you have an expensive "tunable" "filter" to restricts the noise level to only that of the bandpass you want to receive.
- The S/N ratio for "a digital" transmission can be a lot lower than with analogue reception.
- The "scanning" means the processor is continually moving a notch filter through the band looking for possible signals to receive and then adjusting the amplification for best Eb/No.
- Only works with an active device.