[Elecraft] K2 Integration with Z90/91 Digital Panadapter

[Jack Smith]

I have released version 2.0 of Z90-Control software for the Z90/91 
digital panadapters. It is available for download at 
http://www.cliftonlaboratories.com/Software.htm..

Of  interest to this list is integration with the K2's remote control 
interface. The new software adds the ability to click on a signal of 
interest and see the actual frequency displayed. A second click will 
automatically tune a K2 to that frequency.

Another K2 integration feature recognizes the K2's operating mode and 
selects one of three IF frequency offsets. This solves a display 
frequency error problem due to the way the K2 handles different modes 
with a single crystal filter.

Also integrated for K2 owners is automatic sense inversion; so that 
signals displayed on the left are always lower in frequency than those 
to the right. Since the K2's frequency conversion scheme is 
up-converting on some bands and down-converting on others, enabling this 
feature avoids the need to recall upon which bands the frequency display 
is inverted.

Note that the LCD display on the Z90 always remains in spectrum analyzer 
sense mode; lower input frequencies are to the left of higher 
frequencies. The automatic inversion applies only to the Windows display.

Other interesting and useful features have been added in release 2.0.

There is also a new firmware release for the Z91 that speeds up sweep 
time about 2:1 by deleting code associated with the LCD.

Jack K8ZOA
www.cliftonlaboratories.com