Re: New K1 on the way - Band Module Questions

Posted by Don Wilhelm-4 on Jul 25, 2009; 2:04am
URL: http://elecraft.85.s1.nabble.com/New-K1-on-the-way-Band-Module-Questions-tp3323422p3323758.html

Gary,

The 4 band board cannot be modified much.  The lower two bands must
share the same low pass filter, so you are limited to 40 and 30.  A low
pass filter that would pass a 17 meter signal would be too close to the
second harmonic of 30 meters to effectively reduce that 2nd harmonic.  
The K1, like all other transmitters must meet the FCC requirements for
harmonic radiation.

73,
Don W3FPR

Gary W. Marklund wrote:

> I should receive my new K1-2  with KAT1 tomorrow or Monday. I ordered
> 40M and 30M for starters. I will add others shortly. My question is
> regarding modification for other bands. I've seen replacement parts
> lists for 12 and 10 M. Is there any reason the KFL1-4 is limited to
> 40/30/20 and 17 or 15? What if I wanted to build a four band module as
> say, 30/17/12/10 meters? Is there something inherent in the KFL1-4 that
> prevents this?
>
> Thanks,
> Gary
> KJ7RT
>
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