Welcome to the Home Page of Chuck Adams, K7QO

This page last updated April 28, 2008.

K7QO's Schematic Drawing Program and Tutorial If you are going to go through this tutorial, please, please, let me know. I never know if some one is using my stuff until I get an email. Be sure to download a copy and keep it on a CD or someplace safe in case I decide to remove it due to lack of interest by the world. It looks like the number of programmers is dying off, especially in C. I note that a number of people are going to PYTHON, but I'm not one of them.....

Small Wonder Labs Transceivers

Even though this document is labeled for the SW-40+, there are building steps for the SW-80+, SW-30+, and the SW-20+. I'll add notes on the photos for the 40+ where the parts vaues change for the frequency dependent components.

K7QO's Small Wonder Labs SW-40+ Building Project Version 0.95 [February 14, 2008]

The following PDF is a 11x17" schematic drawing of the SW40+. Take a copy of this file on a USB thumbdrive or memory card to Office Max or Staples or any print shop and tell them you want a 11x17" B&W copy. It'll cost about 20 cents per copy, but if you are building this thing it will come in handy. Heck. Put one on the bulletin board. Let me know if you do it.

I did an A/B comparison and found out something interesting. I did the above at Staples and Office Max.

Staples uses a Canon Image Printer 8500. This device did the output correctly.

Office Max uses a Xerox 4590 Printer/Copier. This puppy has a software/firmware problem or error. Look at the LP Filter caps, C37, C38, and C39 on the lower right-hand side of the schematic. You'll see that the horizontal lines have a jagged line. This is not the fault of my software and PDF doc. It came out perfect on the Canon Printer. So, if you have influence at Xerox, pass this on to them.

SWL SW-40+ Schematic 11x17" Format [February 15, 2008]

Since moving to Prescott, AZ in 1999, I have had a email signature that asks you to bring water to AZ if you are moving here. People probably think that is a joke. OK. Look at the following and think about it.......

Lake Mead Water Levels

Due to SPAM bot routines email to \k7qo\at\commspeed\dot\net\ (you know what I mean). I report all spam email to uce@ftc.gov or spam@uce.gov Let the spam bots grab those email addresses.

November   7, 2004      224    
November  15, 2005   36,000
November  23, 2006   69,300
September 20, 2007   91,000
December  17, 2007  100,000

k7qo at commspeed dot net