Could anyone tell me, or explain (in very simple terms) please, why it is possible to receive and demodulate either or both of the sidebands of an NDB transmission, when there is often no carrier to be observed whilst it is, presumably, the more powerful signal.
Given that these are generally quite distant and often quite weak signals.
Carriers
Re: Carriers
Paul
In the simplest terms: Your receiver provides the carrier. See 'Beat Frequency Oscillator' at Wikipedia
In the simplest terms: Your receiver provides the carrier. See 'Beat Frequency Oscillator' at Wikipedia
Reason: No reason
Re: Carriers
Thanks Mike
Understand about BFO's (I think).
In the past, I have demodulated sidebands by tuning the BFO. So I suppose the question I should be asking is if the signal is present, why doesn't a receiver process it?
If the answer is at a REALLY technical level, I'll simply accept that it happens and just say thanks again for your time.
Understand about BFO's (I think).
In the past, I have demodulated sidebands by tuning the BFO. So I suppose the question I should be asking is if the signal is present, why doesn't a receiver process it?
If the answer is at a REALLY technical level, I'll simply accept that it happens and just say thanks again for your time.
Reason: No reason