06-07-2017, 11:15 AM
You say Central Norfolk but the dominant factor is probably how far you are from the Postwick transmitter as far as Radio 5 Live is concerned.
The most likely competition would be Droitwich which despite the much greater distance is 150kW compared with Postwick's 10kW.
As far as Absolute is concerned, Postwick is only 1.2kW and not intended to serve Central Norfolk so perhaps you are tuned to Boston which should, at least cover NW Norfolk and further at night, despite only being 2kW. Interference source at night is most likely to be from Stockton although it's a bit of a haul at only 1kW.
Of course, what fou haven't said is what frequencies you are using for both of these stations. I've included full transmitter listings below which are taken from http://www.frequencyfinder.org.uk/AM_Stations.pdf
Something else you might find useful is this map which shows the relative locations of different transmitters on the same frequency.
I haven't investigated the situation in South Ayrshire but the same information should be useful.
Absolute now has transmitters on 5 frequencies but back in BBC Light Programme days it was just one: 1214kHz with 14 synchronised transmitters covering the main population centres with Droitwich on 200kHz covering the entire country. I note that there are still 14 transmitters on 1215kHz but Dartford Tunnel was most definitely not one of the original 14! All those extra transmitters should have improved coverage considerably even if, as the above posts indicate, it isn't perfect!
The most likely competition would be Droitwich which despite the much greater distance is 150kW compared with Postwick's 10kW.
As far as Absolute is concerned, Postwick is only 1.2kW and not intended to serve Central Norfolk so perhaps you are tuned to Boston which should, at least cover NW Norfolk and further at night, despite only being 2kW. Interference source at night is most likely to be from Stockton although it's a bit of a haul at only 1kW.
Of course, what fou haven't said is what frequencies you are using for both of these stations. I've included full transmitter listings below which are taken from http://www.frequencyfinder.org.uk/AM_Stations.pdf
Something else you might find useful is this map which shows the relative locations of different transmitters on the same frequency.
I haven't investigated the situation in South Ayrshire but the same information should be useful.
Absolute now has transmitters on 5 frequencies but back in BBC Light Programme days it was just one: 1214kHz with 14 synchronised transmitters covering the main population centres with Droitwich on 200kHz covering the entire country. I note that there are still 14 transmitters on 1215kHz but Dartford Tunnel was most definitely not one of the original 14! All those extra transmitters should have improved coverage considerably even if, as the above posts indicate, it isn't perfect!
