[Elecraft] [Elecraft_K3] filters and contests and interference question/opinions

[Ian White GM3SEK]

dalej wrote:
>
>I debated between the 2.1 and 1.8, I decided on the 1.8 and am glad I 
>did.  This is the first radio I've had with a 1.8 filter that doesn't 
>sound like tweety bird on SSB.  It is a good and tight filter while 
>still bringing in some good audio.  

I used that same 1.8kHz Inrad filter in the old FT-1000MP, where it was 
very much needed for SSB contesting.

Because that filter is also compatible with the K3, I decided to make a 
new adapter board and try it... and am very glad I did!

The K3 is configured to switch in the filter at a DSP bandwidth of 
1.9kHz, and with the center frequency set to 1.25kHz it gives a very 
good balance between selectivity and intelligibility - so good, in fact, 
that the SHIFT and WIDTH controls hardly ever need to be touched for the 
duration of an entire contest.

That isn't just one person's opinion; my wife and guest operators also 
find those same filter settings immediately comfortable, so they can go 
straight ahead and operate.

>You won't be displeased.  
>
I agree with Dale. Although a narrower roofing filter isn't essential 
(we all understand that), the 1.8kHz filter does make a difference to 
SSB contesting.


-- 

73 from Ian GM3SEK
http://www.ifwtech.co.uk/g3sek