Good article in QEX on your system.

David G3UNA

----- Original Message ----- From: "Jack Smith" <[EMAIL PROTECTED]>
To: "Elecraft Discussion List" <[email protected]>
Sent: Friday, March 23, 2007 6:49 PM
Subject: [Elecraft] K2 Integration with Z90/91 Digital Panadapter


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
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