[Elecraft] 2.7 vs 2.8

[Joe Subich, W4TV]

> Is is worth taking the hit and replacing the 2.7 khz 5 pole 
> with the 2.8 khz 8 pole?

Since the "saving" of the exchange is only $30, it's hardly 
worth it.  If you are going to purchase multiple filters, 
the discount by purchasing all of them from Inrad (particularly 
if you can combine your order with a friend or two) will just 
about make up the difference.  

Even if you were planning to use 5-pole CW filters instead of 
the 8-pole filters, staying with the 2.7 KHz filters instead 
of the 8-pole upgrade would pay for the CW filter. 

The K3 generates its ultimate selectivity and shape factor in 
the DSP.  Early testing shows minimal difference in the behavior 
of the 2.7 and 2.8 KHz filters in the "first 30 dB" of rejection 
that is key to IMD performance.  

On the other hand, an optional 2.4 KHz 8-pole filter INSTEAD 
of 2.7 or 2.8 KHz would be very interesting. 

73, 

   ... Joe, W4TV 
  
 



> -----Original Message-----
> From: elecraft-bounces at mailman.qth.net 
> [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Bob Garceau
> Sent: Monday, April 12, 2010 7:52 AM
> To: elecraft at mailman.qth.net
> Subject: [Elecraft] 2.7 vs 2.8
> 
> 
> I'm getting a K3.
> 
>  
> 
> Is is worth taking the hit and replacing the 2.7 khz 5 pole 
> with the 2.8 khz 8 pole?
> 
> Just to let you know, all the rest of the filters that I plan 
> to buy will be 8 pole.
> 
>  
> 
> Bob, W1EQ
> 
>  
> 
>  
> 
>  
> 
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