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Software Updates
Softrock Lite 6.2
Adventures in Electronics and Radio
Elecraft K2 and K3 Transceivers

 

March 2009 Updates

 

24 March 2009

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.

 

23 March 2009

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.

 

Z1502B Active Antenna Prototype Mounted in Temporary Weatherproof Enclosure
Mounted outside.
Short mast for temporary use
 
15 March 2009

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.

 

08 March 2009

I've added a new page with measured data on my K3's efficiency in converting DC power to RF output power. It's available to read by clicking here or in the navigation menu at the left of this page.

 

05 March 2009

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.

 

04 March 2009

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.

 

02 March 2009

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

 

01 March 2009

I've added a new page discussing the effect of DC current upon the frequency response of ferrite core RF transformers. Click here to read it or use the link in the navigation bar at the left margin of the page.

I'll add data for a couple home brew transformers over the next few days.
 

01 March 2009

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.