Thanks Don. I found that the my KAT2 tunes about everything ( endfed long- and shortwires, random length wire verticals with and without radials ( 100' asl ! ) on 80-40-20-15 where my LDG 200 Pro ( automatic atu ) fails definitely.
LDG 200 claims to match ~ 5-1K and in order to judge the misperformace of my LDG200 I want to know the Z ranges on 80-4-20 of my KAT2, so that I can claim a LDG refund or repair. BTW, and a bit OT, I presume an external KAT 100 fits 100 W continuous. Could the KAT100 withstand 250 W SSB( speech SSB only, no CW no FM ) , if my sig is not rf clipped ( my old Datongs rf clippers ....) and my transmissons are short ? If so, I'll get rid of the LDG and buy me a KAT100. Peter, PE1E ----- Original Message ----- From: "Don Wilhelm" <[EMAIL PROTECTED]> To: "PE1E" <[EMAIL PROTECTED]>; <[email protected]> Sent: Saturday, October 28, 2006 5:02 PM Subject: RE: [Elecraft] Z range KAT2 ? > Peter, > > The Impedance range that the KAT2 will match will be greater on the higher > bands than the lower (just because of the math in the formulas for impedance > of inductors and capacitors). So I hesitate to guess at an answer becuase > you did not specify a frequency - I can add up the inductor and capacitor > values and give a range for each. > > With a bit of work with a program like TLW (www.arrl.org), one could > determine the impedance range for each band. It is an L network tuner with > a series inductor range from 0 to 20.62 uH in 0.16 uH steps; while the shunt > capacitor can range in value from 0 to 2423 pf in 10 to 12 pf steps. The > shunt capacitor can be at either end of the inductor. Only the min and max > values need to be entered for each component and configuration, so there > would be 8 calculations for each band of interest. > > All in all, it is a wide impedance range, but will be more restricted on 160 > meters than on 10 meters. This same principle applies to all Elecraft > tuners and to other manufacturers of similar L network designs. > > 73, > Don W3FPR > > > > -----Original Message----- > > > > Is it something like 5-1000 ? > > Can't find no indication wherever. > > > > Peter, PE1E. > > > > _______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
