> > I built my own clown of the GLD ID board back in the 80's. > > It is still working. In my application, changing the state > > of the remote base selects a different ID with appropriate > > "tail msg" on the ID. > > I also have different "speeds" embedded within the ID by > > ratioing the slower CW to that of the fastest. > > I can send someone the schematic if interested. My board > > is wire wrapped. :)
> Sounds like a good job for a PIC. K1EL already has a CW ID > PIC (K-ID) for only $6. Hard to beat the price... > Unfortunately it lacks the timing needed for repeater IDing & > the output is square wave. Most all the pic ID'er kits and projects have a modified square wave output, few actually substitute an honest sine wave generator into operation. > I used one in one of my portapeaters along with Skipp's favorite > IC (555 timer) & a BPF to clean up the square wave. Hard to be the simplicity and reliability of the 555 Timer Chip as a basic waveform generator. I use a low pass filter to "clean up the Square Wave. There are other chips quite able to do the job for the same cost, but the nature of the 555 operation makes it quasi immune to major tone (frequency) drift for temp change problems. > But a PIC should be able to handle the ID interval timing, & > a PIC with more outputs could generate an approximated sine > wave. The ID O'Matic kit does a pretty darn good job along with some extra features making it very versatile. ID timing and visual indicators are included. Most of the simple pic uP ID circuits don't want to bother with an honest sine wave approximation. > The mid- & high-range PICs have built-in serial ports that > would make user programming of the callsign, interval, tone > freq., etc. easy. > Bob NO6B Yep, for about$22 and shipping. s.
