Variable caps and MW loops.
Posted: 30 Jul 2012, 14:25
I'm in the process of building a MW loop using a 3 ft Hula hoop and 9 turns of stranded speaker wire.All good so far,but I've noticed that everything I've picked up so far seems to be concentrated at the one end of the V/caps travel ie almost wide open.The cap is a dual-gang 375 & 260 pf.Am I right in thinking that the vanes and body of the cap are separate from each other? That might sound very basic but I've found continuity between the vanes of the 375pf section and the body.I've also noticed no interference at all when I touch the cap. with my hand.
The loop seems to work as I'm in S.Co Down,and I can get Radio Clyde 2 in Glasgow on 1152khz clearly,but still can't understand why everything is focussed with the cap wide open.Any pointers? Hope I've made myself clear
The loop seems to work as I'm in S.Co Down,and I can get Radio Clyde 2 in Glasgow on 1152khz clearly,but still can't understand why everything is focussed with the cap wide open.Any pointers? Hope I've made myself clear