Good point. I still have somewhere some of those chokes that were used for
filtering plate voltages...
Andre' N4ICK
*******************************
Mike Dennison wrote:

> I have an idea of resonating my existing vertical on 8 kHz.
> Is there a practical way to construct a 600 mH loading coil, withstanding
> 3-4 A and high voltage? Any *large* toroids on the market?'
> /Christer
> sm6pxj

Are we locked into HF thinking here? Why not use an iron cored
inductor such as the output transformer from a QRO valve audio
amplifier?

Mike, G3XDV (IO91VT)
http://www.dennison.demon.co.uk/activity.htm