[Elecraft] K2 Kit Questions

Jim Wiley jwiley at alaska.net
Mon Feb 7 20:04:59 EST 2011


Replies in-line


- Jim, KL7CC



Phil Hystad wrote:
> Gang,
>
> So, I am thinking that another kit is in my future.  I have a K3 and a KX1 and I am thinking about the K2.  I would be using it for CW and QRP or 2*QRP only.  So, I wouldn't plan on getting the SSB option and I am not planning on the 100 watt PA or the ATU.
>
> But, I do have questions about filters (remember, CW usage only).
>
> 1.  Question:  is the radio a completely analog radio (no DSP) if you DO NOT buy the DSP filter option?
>   

Yes, if you do not purchase the DSP option.  A substantial amount of 
"digital" is still used, but not directly in the signal path.  The 
digital stuff is used to control the rig, set and operate the VFO,  
change bands, communicate between options, etc.
> 2.  Question:  is the DSP filter worth the money?
>   

This is a subjective issue.  Some people like the DSP (I do), others 
prefer the simplicity of the audio filter (KAF2).  I would recommend one 
or the other, but the rig runs fine without them.  Depends on your 
operating style.   For occasional use, the built in variable bandwidth 
filter may be enough.  I really like the combination of the variable 
filter and DSP working together. 
> 3.  Question:  is the Audio filter useful?  Is the Audio filter still useful if I buy the DSP filter?
>   

See above.  Keep in mind that this is a choice of one or the other, not 
both.  The K2 cannot accept both units at once.
> Any other comments and suggestions are definitely accepted.
>   

Buy the KAT2 internal tuner.  You won't be sorry.  It is astounding in 
it's ability to match pretty much anything, and will be very helpful if 
you decide to try "out in the field" operating with makeshift antennas.


- Jim,m KL7CC
> 73, phil, K7PEH
>
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