It's varnished wooden supports with hexagonal end caps Roger. However it worked a treat for a while ! Whatever the problem it suddenly occurred . . . 73 Chris G3XIZ From: Roger Lapthorn <rogerlapthor
Maybe you're right Andy. The coil was intermittent and gently moving the turns with a paint brush cured the problem temporarily. That's why I 'assumed' it was a s/cct turn and subsequently rewound th
On a large air cored coil I would have thought a shorted turn would just shift the inductance very slilghtly - rather than lowering the Q significantly. Andy www.g4jnt.com On 29 December 2010 08
LF, Many thanks for all efforts, advice and suggestions from members of the group. I shall E-mail them personally within the next few days. I spent several hours yesterday re-winding a section of my
Not am expert on large coils Chris, but could it be the former material is lossy? 73s Roger G3XBM On 29 December 2010 08:26, Chris Osborn <[email protected]> wrote: LF, Many thanks for all efforts, a
Dear Chris, LF Group, The varnish is likely to be the culprit - for one thing, it probably has fairly poor AC dielectric properties, which will increase losses; for another, it has a higher dielectri
