Radio World Online has published an article by H Donald Messer, chairman of the Digital Radio Mondiale (DRM) Technical Committee. He says that consumer receivers “at starter production levels” are available in Europe. Mass production of these and other models is expected in the coming months. Another interesting point made by Dr Messer is that, for “local” broadcasts, “Typically, signal-to-noise ratios of 15 to 20 dB are all that are needed for perfect reception. This compares with 30 dB or so for a decent AM signal.”
on Sep 28th, 2006 at 13:28
“Typically” and later “very generally”, put Lauterbach DRM into Google and read the only fully published research I can find on 26Mhz DRM including:
Measurements of Deutsche Welle using a short vertical
active rod aerial (Rohde & Schwarz HE010) and a Rohde &
Schwarz EB 200 receiver basically confirm our own meas-
urements but resulted in a slightly reduced coverage. Their
measurements conclude that the threshold for 100 % audio
is 23 dB(µV/m) in Nuremberg and 26 dB(µV/m) around
Dillberg.
on Sep 28th, 2006 at 13:44
Full link is (1.72Mb pdf):
http://www.fh-nuernberg.de/fileadmin/Pressestelle/pdf/Lauterbach_Nr_31_fertig.pdf
on Sep 28th, 2006 at 17:19
“Mass production of these and other models is expected in the coming months”
This time next year then… maybe !!