Re: Topband: Hairpin Matching Coil Questions - BTW

2013-09-18 Thread Charlie Cunningham
BTW, Jim The Qs that you threw out for the inductor are OUTRAGEOUS! The only reason for raising the Q of the inductor is to reduce its losses that are going to be pretty small across 50 ohms, even at full power. because the the voltages and currents at the end of your feedline are going to be pr

Re: Topband: Hairpin Matching Coil Questions - BTW

2013-09-14 Thread Charlie Cunningham
BTW, Jim The fact that you can't get the feed-point resistance above 27 ohms, sounds like you are just looking at the driving-point resistance of the inverted L in parallels with the inductance of the matching coil, that is large enough that it's out of the picture. Can you use a grid-dip meter t