[Elecraft] K1 bandspread options revisited ...

[Don Wilhelm]

Doug,

The bandspread of the K1 can be easily changed by changing the value of 
RF Board C2.  The 68pF and the 120pF capacitors are provided with the 
kit, but if you want to customize the bandspread, you are free to use 
whatever value capacitor at C2 that you desire - 100pF will give you 
about a 100 to 120 kHz range.  You may have to alter the turns spacing 
of L1 to produce the proper VFO tuning when C2 is changed.
Yes, you can change the tuning range at any time.

The only real change that should accompany a change in the tuning range 
is the selection of which crystal to use for 30 meters on the band 
board.  With a tuning range of greater than 120kHz, you may want to use 
the 18.0 MHz crystal for coverage from 10.0 MHz to 10.120 MHz.  With a 
more narrow tuning range (less than 100 kHz), you would not be able to 
tune into the 30 meter amateur band with the 18.0 MHz crystal, and the 
18.1 MHz crystal must be used so the K1 will tune from 10.100 MHz upward.

The Cumbria Designs X-Lock will work with any tuning range.  I don't 
think it will matter what the tuning range may be.

As the frequency range is increased, the K1 VFO tuning will become "more 
touchy" because each degree of rotation on the knob will transverse a 
greater frequency range - some K1 owners prefer the narrow tuning for 
that reason, but others apparently have a more steady hand on the knob 
and do not have a problem with that.

73,
Don W3FPR

On 10/2/2015 1:37 PM, Doug Hensley wrote:
> K1 Fanatics,
> The K1 can apparently be set to have a band spread of 80 kHz or 150.  Can this choice be easily reversed if I wanted to see (aka "experience") the difference in operation?
> Secondly, as the tuning rate increases with the wider band spread, can that be tamed by going to a different VFO encoder or variable pot ?
> Finally, does anyone know if the Cumbria Designs X-Lock VFO stabilizer would help the 150 kHz option ?  ... or is that irrelevant?
> Feel free to reply in private as I am on Digest Mode.
> Thank you,
> Doug W5JV
>
>
>
>   
>
>
>
> From: w5jv at hotmail.com
> To: k3support at elecraft.com
> Subject: RE: W5JV : Fwd: W5JV K1 Order Page questions
> Date: Fri, 2 Oct 2015 11:56:29 -0500
>
>
>
>
> Thank you Craig.  I got it now: the back light is a separate unit all by itself and not part of the LCD.  I was under the mistaken assumption that there were two LCD units and one was backlit.  My mistake.  I appreciate your taking time to answer this dumb question.  I didn't know.
> Doug
>
>
>
>   
>
>
>
> Subject: W5JV : Fwd: W5JV K1 Order Page questions
> To: w5jv at hotmail.com
> From: k3support at elecraft.com
> Date: Fri, 2 Oct 2015 08:18:27 -0700
>
>
>    
>
>      
>    
>    
>      
>
>      
>
>        
>        Hi Doug,
>
>        
>
>        Thank you for your interest in the K1.
>
>        
>
>        Here is the link to purchase the LCD backlight, separately. http://www.elecraft.com/order_form_parts.htm#K1%20Parts
>
>        
>
>        The instructions will show you how to add the backlight to the LCD
>        which comes with the K1.
>
>        
>
>        73,
>        On 10/1/2015 4:46 PM, Lisa Jones
>          wrote:
>
>        
>        
>          
>          w5jv at hotmail.com
>          
>
>            
>
>            -------- Forwarded Message --------
>            
>              
>                
>                  Subject:
>
>
>                  
>                  K1 Order Page questions
>                
>                
>                  Date:
>
>                  
>                  Thu, 1 Oct 2015 18:20:09 -0500
>                
>                
>                  From:
>
>                  
>                  Doug Hensley <w5jv at hotmail.com>
>                
>                
>                  To:
>                  
>                  info at elecraft.com
>                    <info at elecraft.com>
>                
>              
>            
>            
>
>            
>
>            
>            Hello,
>              
>
>              
>              Does
>
>
>                  a new K1 kit come with the backlight LCD or must that be
>                  ordered in addition to the K1?  And does that mean the
>                  buyer ends up with a spare non-back lit LCD ?
>              
>
>                
>              Thank
>
>
>                  you,
>              
>
>                
>              Doug
>
>
>                  W5JV
>              
>
>                
>              
>                w5jv at hotmail.com
>                
>
>                
>                
>
>                
>
>                
>
>                
>                
>
>                
>                 
>                
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>                
>                
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>                
>              
>            
>            
>
>          
>          
>
>        
>        
>
>        
>
>        --
> --------------------------
> Craig Smith W6WL
> Elecraft Customer Support
> 831-763-4211 x 174
> --------------------------
>        
>
>      
>      
>
>      
>
>      --
> --------------------------
> Craig Smith W6WL
> Elecraft Customer Support
> 831-763-4211 x 174
> -------------------------- 		 	   		   		 	   		
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