[ETO_Alpha] Woodpecker tuning pulser

[John Tait]

If anyone is interested, I have just added a new page to my site at 
http://www.iol.ie/~bravo/ .
  It's a simple, but usefull, tone pulser, for tuning up your valve PA or 
linear amplifier.
I hope someone may find it useful.
     Vy 73
        John EI7BA