Steve WD8DAS via CW wrote:

If someone would like to build a good sounding practice oscillator, have a look at my design for a repeater identifier tone generator. Schematic here:

http://www.wd8das.net/IDerOsc.jpg

I've used this circuit to replace the edgy and raw sounding repeater identifier oscillators in my VHF/UHF repeaters. It could make a very pleasant-sounding practice oscillator if fed to headphones or a amplified (computer) speaker.

I practice sending all of the time, I simply use my regular iambic paddles with my regular transceiver with the VOX turned off. I enjoy my normal sounding sidetone and speed settings.

-- 
   Ron  W4BIN - Understanding is much better than
                                      knowing how.MX