[Elecraft] [K3] AM Bandwidth

[Joe Subich, W4TV]

> Not here.  I've consistently measured (with SpectraPLUS) 4Khz 
> audio bandwith on my K3 in AM with 6Khz filter and width 
> control indicating 5Khz.  I've always had 4Khz wide rx audio 
> in AM - am I the only one?

No you're not.  The DSP has a brickwall response at 4200 Hz 
(except for the various clock leakage products). 

73, 

   ... Joe, W4TV 
 


> -----Original Message-----
> From: elecraft-bounces at mailman.qth.net 
> [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Barry N1EU
> Sent: Monday, March 22, 2010 8:53 PM
> To: elecraft at mailman.qth.net
> Subject: Re: [Elecraft] [K3] AM Bandwidth
> 
> 
> 
> 
> Joe Planisky wrote:
> > 
> > Yes, that's normal.  The displayed bandwidth is audio bandwidth.   
> > Remember that AM uses both sidebands, so the 6 kHz filter 
> passes 3 kHz
> > above and 3 kHz below the carrier (6 kHz total).  Your 
> resulting audio  
> > bandwidth will actually be somewhere around 3 kHz.
> > 
> Not here.  I've consistently measured (with SpectraPLUS) 4Khz 
> audio bandwith on my K3 in AM with 6Khz filter and width 
> control indicating 5Khz.  I've always had 4Khz wide rx audio 
> in AM - am I the only one?
> 
> 73, Barry N1EU
> 
> -- 
> View this message in context: 
> http://n2.nabble.com/K3-AM-Bandwidth-tp4778593p4781621.html
> Sent from the [K3] mailing list archive at Nabble.com. 
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