Comparison of analogue and digital signal levels
Brian Butterworth published on UK Free TV I've been meaning to add this to the site for ages, as it has been asked for quite a few times.
On each and every transmitter page there is now a section titled "Comparison of analogue and digital signal levels", below the "Transmission frequencies" section.
This section shows the ERP levels for each of the current, future and past broadcasts from the transmitter.
I've added is some coloured bars to make things clearer.
The above example is from Freeview on Emley Moor TV transmitter - ukfree.tv - independent free digital TV advice.
All questions
In this section
Tuesday, 8 November 2011
The digital signal from most transmitters is -7dB on the analogue. How does this affect the coverage area?
Is the reason for doing this due to the way in which digital pictures don't degrade as analogues do? And therefore, does DVB-T at -7dB equate to roughly the same coverage as analogue?
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Dave's: mapD's Freeview map terrainD's terrain plot wavesD's frequency data D's Freeview Detailed Coverage
Wednesday, 9 November 2011
Dave Lindsay: -7dB provide full digital coverage at highly stable levels for the same as the analogue coverage area.
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M
Mark Heselden9:40 AM
What causes digital signal quality to be very low, say 10%, if signal strength is relatively high, say 70%. (+51.14,-000.04)
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