[Elecraft] Elecraft K144XV 2-m module design change

[Wayne Burdick]

Our prototype K144XV 2-m module for the K3 used a 6 meter IF (50-54  
MHz). However, a number of K3 owners were concerned with this. In  
multi-transmitter installations, such as during high-band contesting,  
stations typically standardize on a 10-m IF to avoid interaction with  
high-power 6-m transmitters.

Because of this, we've decided go with 10 m (28-30 MHz). The K144XV  
will still cover the full 144-148 MHz range by using two local  
oscillator frequencies (116 and 118 MHz). If you tune across the  
boundary at 146 MHz, the oscillator will switch automatically.

The vast majority of weak signal work occurs below 146 MHz, and  
repeater in/out frequencies are normally either both below 146 or  
above it. So, local oscillator switching at 146 MHz should be a non- 
issue for most applications.

You can set two 2-m transverter bands on the K3 if you like, one  
configured for CW/SSB work (144 MHz band edge) and the other for use  
with repeaters (146 MHz band edge). Or you can set up one band for the  
entire range, and the oscillator will switch as you tune across the  
boundary.

If you have any questions regarding this change, please feel free to  
contact me directly.

73,
Wayne
N6KR