AD6XY - Mike wrote: > > Yes - but where the UK leads.... at least in the US they get the voice of > reason on AM for ironic entertainment. All we get is 5 live and a few > local radio stations. > > In terms of audio quality, I think there has been a reduction in recent > years. It is AM so it does not matter sort of attitude. Yes there will be > a limit at around 3kHz with the 6kHz filter on the high frequencies but > whenever I listen there is a lot of mush lower down on broadcast radio > transmissions these days. You might expect at least the bass to be good > but often it isn't as it tends to require more of the transmitter power - > so for something to sound loud bass is cut and midrange boosted. For > speech fine but the same settings are no good for music. > > Back to the K3. The correct filter to listen to AM broadcasts will be the > FM filter. 6kHz is too narrow, it is designed for amateur transmission. A > 10 kHz filter would be better but I am sure the DSP can cope with removing > the leakage from adjacent channels due to the 15kHz filter. > I thought we usually followed the US lead. But I was thinking of the short waves anyway. I don't know why anyone would listen to local radio using a K3 when they can get the same stations on a five quid VHF FM portable. (Mind you, much of the point of SWL seems to have gone thanks to the advent of internet radio. Before switching the K3 on I was listening to classical music from WCPE in Raleigh, NC at FM quality!)
You may be right about using a wider filter, though the 5KHz heterodynes would be a bit irritating. Perhaps the notch would remove them. I was going to try it, since I installed my FM filter this morning, but even though the CONFIG menu shows FL1 is ON in AM mode, the width control won't go above 3.00. I guess that's another one of those firmware mods we're waiting for. ----- Julian, G4ILO K3 s/n: 222 K2 s/n: 392 G4ILO's Shack: www.g4ilo.com Zerobeat Ham Forums: www.zerobeat.net/smf -- View this message in context: http://www.nabble.com/K3-General-Coverage-Recieve-tp16189237p16201173.html Sent from the Elecraft mailing list archive at Nabble.com. _______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
