[Elecraft] K3: FM filter bandwidth in other modes

[Joe Subich, W4TV]

The K3 DSP maxes out at 4 KHz on SSB and 2.8 KHz on CW. 
With those limitations, the widest roofing filters that 
will be selected are 2.8 KHz on CW and 6 KHz on SSB.  

The FM filter can be selected in AM (BW > 3 KHz audio). 

73, 

   ... Joe, W4TV 
  


> -----Original Message-----
> From: elecraft-bounces at mailman.qth.net 
> [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Stephen Prior
> Sent: Friday, October 16, 2009 1:10 PM
> To: elecraft
> Subject: [Elecraft] K3: FM filter bandwidth in other modes
> 
> 
> I have just fitted the FM filter to finish off my complement 
> (now 13, 6, 2.7, 0.5 and 0.25).  I used the K3 utility to set 
> the bandwidth (13kHz) and I have all the square boxes ticked 
> (checked) so that, in my understanding I should be able to go 
> up to the full bandwidth of the filter in all my other modes 
> should I wish.
> 
> However, whether I use the width control or the xfil button, 
> the FM filter (in FL1 of course) cannot be brought into play, 
> the width simply stops at the width it did prior to fitting 
> the FM filter.
> 
> It's no big deal, I bought the FM filter to play on the top 
> end of 10m from time-to-time, not to use enormous receive 
> bandwidths in other modes, however I was of the belief that 
> the full width should be usable in every mode so long as it 
> is enabled on a per mode basis.
> 
> I am wondering if there is something I have overlooked, and 
> 'yes', I've read the manual!  I am on the latest beta firmware.
> 
> 73 Stephen
> 
> G4SJP K3#980.
> 
> 
> 
> 
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