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If you wish to receive the digital signal, you can still receive as a CW signal as you will only get garbled noise at a higher signal level. The idea of signal detection is not to de-modulate but to receive an indication that the carrier or modulated data is being received. So BER is not the going to be a problem in this instance.
I think though the transmitter power is lower than the previous analog station so it is likely the reception will be weaker. I have been trying to source transmitter power levels but bit hard to find.
I think the best alternative is to simple listen out on a frequency and see if you can get anything back, trying 1 station at a time. If you are considering a specific antenna design then I suppose it maybe best to find a carrier transmitting somewhere and design the antenna to that. Still not sure if the reception will be received even about the antenna is built. I do recall Ham radio transmitter beacons but I think they are few and far between. Mostly Northern hemisphere.
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