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

E-mail: Jack.Smith@cliftonlaboratories.com
 

I've extensively revised the site layout. I hope no pages have been lost, but instead of one very large main menu with only a few sub-levels, I've made the site more hierarchical. In the next day or two, I'll also add a Google site search bar. I'll make more fixes over the next few days.

Thanks to Pete, N4ZR, for suggesting the revisions and providing a tip on how to use Front Page to help the process.

I've also added a new product - the Z10020 AM broadcast band rejection filter. If I've done my site work correctly, clicking here will take you to the Z10020 page, or you may find it from the current products page.

I've been working on the active antenna project. The photo below shows the present prototype version in a weatherproof enclosure with mounting bracket.

The production version will not use such a large box, nor will the antenna arrangement be the same. The oversize enclosure is one I had on hand as was the antenna mounting arrangement.

I've added a new page with extensive measured results for the K3's SSB transmit RF clipping feature. The page may be viewed by clicking on the link in the navigation menu at the left or by clicking here.

I've made a couple of small changes to the AM AGC page an also added a new page with microphone output measurements. To view the new page, click here or use the navigation bar at the left side of the page.

I've added a new page discussing peak-based versus average-based AGC systems for AM mode receivers, with particular attention to Elecraft's K3. To view the page, click here, or use the navigation bar at the left side of the page.

I've added data for six homebrew RF transformers to the DC current in transformer page, accessible by clicking here.

As usual, the February 2009 pages are now available in the archives, accessible by clicking here or through the table at the top of this page.