[Elecraft] K3 FM filter required for full AM receive width

[Don Rasmussen]

Windy,

The stock K3 comes with one 2.7khz filter and that's a
hardware limitation.

The firmware cannot help this.

So, you will need a 5.0 filter (AM), a 13 filter (FM),
or one of the variable hardware filters that should be
available in the next couple of years from Elecraft.

I use the FM filter and it may also be usable in AM
transmit. I know its good for FM and SWL.


[Elecraft] K3 FM filter required for full AM receive
width
KM5Q km5q at mac.com 
Sun May 4 20:19:42 EDT 2008 

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Wayne,

In the new firmware announcement you say:

> AM RECEIVE WIDTH RANGE INCREASED
> ...
> NORM selects an IF bandwidth of 6.0 kHz in this
mode. WIDTH settings  
> above 6.0 kHz will not be useful unless you have an
FM-bandwidth  
> crystal filter installed (at FL1).

I like using the K3 for shortwave listening. I would
rather not be  
required to buy the FM xtal filter to get the full
bandwidth on AM.  
Will this change with future revisions?

Windy KM5Q