[Boatanchors] Fw: Re: Making coils ...some data

[Sandy and Kees Talen]

Thanks for all the input on why coils are wound the way they are.
Here is some data which may be of use:

Three identical spools were hand wound (not "exact" but close 
enough to understand the effect). Roughly one spool length wire 
traverse per revolution of the spool for the "basket weave" coils. 
All coils trimmed to 2.0mH. The absolute accuracy of the Q 
meter is not as important as the relative accuracy. Q Data is 
"unloaded Q".

                                                    
Coil #1 #34 AWG, level wound, 200Khz, 325pf, Q of 52   
Coil #2 #34 AWG, basket weave wound, 200Khz, 320pf, Q of 55
Coil #3 two #38 AWG, basket weave, 200Khz, 310pf, Q of 78
Coil #1 #34 AWG, level wound, 170Khz, 440pf, Q of 55 
Coil #2 #34 AWG, basket weave wound, 170Khz, 447pf, Q of 57
Coil #3 two #38 AWG, basket weave, 170Khz, 433pf, Q of 78

Two strands of #38 AWG has "roughly" the same DC current 
capability as one strand of #34. Three strands of #38 will probably 
have an even higher Q and better DC capability.

73s  Kees K5BCQ