Clifton Laboratories 7236 Clifton Road  Clifton VA 20124 tel: (703) 830 0368 fax: (703) 830 0711

E-mail: Jack.Smith@cliftonlaboratories.com
 

 

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Archives

Older Updates are archived monthly. Click on the month below to read the archive

 

July 2006 August 2006 September 2006 October 2006 November 2006 December 2006
January 2007 February 2007 March 2007 April 2007 May 2007 June 2007
July 2007 August 2007 September 2007 October 2007 November 2007 December 2007
January 2008 February 2008 March 2008 April 2008 May 2008 June 2008
July 2008 August 2008 September 2008 October 2008 November 2008 December 2008
January 2009 February 2009 March 2009 April 2009 May 2009 June 2009
July 2009 August 2009 September 2009 October 2009 November 2009 December 2009
January 2010 February 2010        
 
 

Sticky Updates (Revised 03 May 2009)

F Revised firmware release 610 for Z90 is now available The revised firmware permits you to reverse the sweep direction, thereby placing signals in their correct orientation when the Z90 is used with equipment that inverts the IF frequency, such as the K2 on most bands. Download the firmware at the Software Updates page. (04 Nov 2007)

F Revised firmware release 2.2 for Z100 is now available . Z100 Firmware release 2.2 implements an additional operating mode, central green LED plus high/low direction indication. Download the firmware at the Software Updates page. (15 Dec 2007)

Z10000- Buffer Amp is now the Z10000B, to reflect the newest printed circuit board revision.

The Z10000B buffer amplifier is now shipping. For more information, click here.

New Kit-the Z10040B broadband Norton amplifier is now available. For details, click here.

New Kit-The Z1501D Active Antenna (kit or assembled) is now available. For details, click here.

 
The latest weather in Clifton VA from my Davis Instruments weather system.

You can click on the image to jump to data from my weather station at Weather Underground. Or, you can click here for 24 hour data uploaded directly to my Clifton Laboratories web site.

 

 
Poll - New Kit Construction Type

If you are a potential customer for my kits, please  take a moment and respond to my poll on the type of construction you prefer. One vote per person, please.

Surface mount kits will use passive parts of 1206 size or larger and integrated circuits with a pitch of 0.05 inches/pin or larger.

 

04 March 2010

I found an error in my paper on intermodulation performance of the Z1501D active antenna. The error is at page 17 and I over-stated the predicted strength of the 3rd order intermodulation signal produced by two -20 dBm signals. The unwanted interfering signal (in "S-units) is not S-5 as I originally said, but S-0 and hence below the noise level in all but the exceptionally low noise locations.

Although I computed the interference level in dBm correctly, I mis-read my spread sheet conversion from dBm to S-units. The spread sheet is in both dBm and dBW and I looked at the dBW column when originally drafting the analysis.

A corrected version of the analysis now replaces the original document.
 

02 March 2010

All outstanding orders for Z1501D active antenna, Z1203A coupler are completed and shipped.

The photo below shows five Z1203A couplers on my bench ready for assembly Saturday morning, completed late Sunday.
 

02 March 2010

As usual, last month's Updates are now in the archive. You may view the February 2010 updates by clicking here or by the links in the  table at the top of this page.