Dear Peter, LF group, I also got one of the Decca loading coils - mine was from the scrap pile at Puckeridge, and was of the old type with the difficult-tosolder litz and the former solvent glued tog
Hello Ha-Jo, I believe in mult-layer versus single-layer coils there are 2 factors having an opposite effect : 1. A multi-layer coil needs less wire for the same inductance = less copper losses 2. A
Hello Ha-Jo and LF group, Exactly that's what I found in own experiments. By "forcing" the magnetic field through any kind of metal, you increase the losses. For the same reason, long coils shouldn't
Dear all, concerning multi versus single layer coils I have been informed by DJ2EY who employs two coils of different diameter as a variometer that the Q of the total coil is less when the smaller co
Some time ago I obtained a Decca loading coil on one of my visits to the Crawley radio club. The Decca coil on page 64 of the LF Handbook illustrates the general construction of one of these coils an
As a former, I found a "sectional manhole" made by Osma was very suitable. This is a brown PVC cylinder about 500mm diameter and 350mm long, with external ribs. It is meant to form the walls of manho
Dear James, LF group, In the end, I just used the wire from the Decca coil and scrapped the rest. As a former, I found a "sectional manhole" made by Osma was very suitable. This is a brown PVC cylind
