Anyone happen to know anything about the numbers involved with tuning coils by interposing copper (or silver!) vanes between the turns? Specifically, what order of max-min ratio is obtainable? This is for a low impedance application therefore, the currents run high, indicating against a roller inductor or bandswitch. 73 & Good evening, Marv WC6W * ___________________________________________________________________ Try Juno Platinum for Free! Then, only $9.95/month! Unlimited Internet Access with 250MB of Email Storage. Visit http://www.juno.com/value to sign up today!