[Elecraft] K3 AM vs FM filter

Toby Deinhardt dj7mgq at muenchen-mail.de
Sun Feb 17 06:39:34 EST 2008


Hi Björn,

> Has anyone tested the FM filter for AM broadcast reception? If so, what is

The FM filter is not available yet, so no idea...



> Regarding AM voice operation, I do one AM contest per year. I guess it would
> be possible to use the FM filter also for AM TX and restrict the bandwidth
> on a DSP/audio level, or is this a bad idea?

According to Eric & Wayne (check the list archives) a questionable idea. 
The FM filter may not have enough image rejection (15kHz image).

<http://www.nabble.com/Re%3A-Re%3A-K3-AM-operation-with-%22FM%22-roofing-filter--to14077480.html#a14077593>



vy 73 de toby


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