DIAMOND-WEAVE 250/46 LITZ COIL FOR CRYSTAL RADIO SETS - FREE SHIPPING!

Description

DIAMOND-WEAVE LITZ COIL by W0HII FOR CRYSTAL RADIO SETS
BUILD YOUR CRYSTAL RADIO!
****Two free 1N34A diodes included****
This is a Diamond-weave hand-wound coil for crystal radios using 250/46 Litz wire. The design is sometimes mistaken as a spider-web coil but since it has no inner former spokes, it is called a diamond-weave. Please Google for crystal radio schematics. See photos. The Wooden stand shown is for demonstration purposes only and is not included.
Two free 1N34A diodes are included
.
To tune the broadcast band a 365pf variable capacitor is needed, not included.
There are no loss causing formers, coil is self-supporting, air-wound, held together with q-dope glue and sprayed with crystal clear acrylic to strengthen the coil.  Lead length is approximately 6”, and pre-tinned. This coil wound using a 15-pin former, a 36% increase over the 11-pin former, meaning more crossovers for better inductance performance, less inner capacitance.
A 2.5-inch nylon screw and 3 nylon nuts are provided to mount the coil on your set.
Each coil measured for proper inductance using an AADE L/C Meter IIB precision meter. See photos.
Coil Dimensions:
Coil ID:          1.650-inches
Coil OD:        3.675-inches
Coil width:    0.375-inches
Inductance:  252.4uH
This coil is new and is sold as-is. Coil will be well packed in its own plastic container (see photo) and shipped within the US via USPS Priority Mail. Note: Postage cost has now approached .00, thus the price increase. Please contact if you need additional coils. See my feedback. 73, John W0HII