On Sat, 15 Nov 2003 17:06:34 -0500, " Uncle Peter"
wrote:


It is kind of hard to get the proper coupling on PCB style coils.
You may have to use a link coupling system (came with some
of the Millens); also solid state circuits can have fairly low Q
circuits, again making it hard to see the dip.

Those were intended for larger tube circuit designs, not PCB
based gear.

Item 2.4 described on http://home.online.no/~la8ak/5c.htm
is the solution for dipping pcb coils, and you don't need a
griddipmeter, at all. Another problem with the pcb coil is low
Q-value, and if the coil is loaded too much it won't dip with any
arrangement tried.
also described some GDMs on http://home.online.no/~la8ak/5a.htm -
haven't got the time to re-edit these pages

Jan-Martin
LA8AK
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