[Elecraft] K3 General Coverage Recieve

[G4ILO]

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
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