Behold, Ken Scharf signalled from keyed 4-1000A filament:

K1jhj wrote:
Check
http://www.qsl.net/k1jhj/
for CoilCalc and CoreCalc, for air-core coils and toroid coils on
T-type cores.

Much better and more useful than the cardboard slide rules.

73
JL/k1jhj



I just tried these out under Linux by using the Wine emulator. Works ok,
but the selection boxes could be a little wider to see all the text
(could be a wine font issue).

If you feel like posting the source code, I'd be tempted to try a native
Linux port.

73's
Ken
WA2MZE

The Linux community, including myself, will be eternally greatful :-))))

--
Gregg
*It's probably useful, even if it can't be SPICE'd*
http://geek.scorpiorising.ca