Re: what do digital radiosignals REALLY look and sound like ??

hwh wrote:
On 3/5/10 12:57 PM, Richard Evans wrote:
Also a shame that It didn't cover 648 Khz, as I was curious to hear what
the World Service transmission sounds like in Holland.

Very listenable, on a normal radio even :-)

I was interested because you presumably benefit from the very directional transmission. Here to the south of London, the directional transmission makes the signal a lot worse than it used to be. Years ago when it was omnidirectional it was extremely strong here. Once as a boy I built a simple receiver, using my electronics kit. Just coil variable capacitor, diode and some smoothing, no amplifier of any sort, and simple aerial across the ceiling of my bedroom. With the world service transmission, there was no need of any amp, the signal sounded perfectly loud and clear just from the power received by the aerial. Pretty awesome, considering that Orford Ness must be about 100 miles from here. And obviously no interference at night, the strong signal easily out powered everything else. That is what I call a good MW signal.

Now with the very directional transmission it is considerably weaker around here. I have it tuned in on my car stereo and listen now and then. It's still perfectly listenable during the daytime, but these days it does sound like a bit of a distant signal, and at night time the interference can make sometimes pretty much wipe it out.

1296 can be better, but is of no use when it operates in DRM.

I didn't realize that one also used AM. Wonder whether the receiver Kristof showed us on the web can receiver it. I would have a look but can't seem to get a web browser to load on my PC at the moment :-(

Richard E.
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