From time to time, I peruse the QST classifieds looking for new items. Here are two from the July 2015 QST, plus one that I’ve seen before:
CW Operators. Learn to copy in your head. Exercises on USB flash drives. Audio and visual displays. Use with Windows Media. $20. Free shipping. Carl Dahlberg, N7AGK, P.O. Box 753, Bonners Ferry, Idaho 83805. Email [email protected]
This sounds interesting to me. I always advise guys to learn to copy in their heads. I think I’ll have to email N7AGK and get more info as it doesn’t appear that he has a website…Dan
“SOFT START YOUR RADIO from SIGTOMICS.com or (607) 785-7085 WA2LTD”
WA2LTD sells several different devices that limit the start up current to devices…Dan
CODE PRACTICE OSCILLATOR MUSEUM http://www.n4mw.com
The Code Practice Oscillator Museum is actually at http://www.n4mw.com/cpo.htm. It has photos of hundreds of different code practice oscillators. Some have little writeups or documentation. For example, along with the photo of the Knight-Kit Star Roamer receiver is the following:
The thoughtful designers at Knightkit decided that a beginner’s receiver would be used to learn to receive morse code. But what about sending practice? They cleverly and cheaply built in a “code/normal” switch and a terminal strip to connect a key (see inset picture below). In the “normal” position, received sound is emitted from the speaker or headphones. In the “code” position, the audio output is interrupted by the open key circuit. To practice code, put the switch in “normal”, tune in a carrier and adjust for a constant beat note. Then switch to “code” and operate the key. No special oscillator involved, unless you count the distant station emitting the received carrier wave.
Leave a Reply