[Elecraft] K2 Output issues in Tune

2012-11-29 Thread N9AUP
es as well. If all bands acted the same, I'd be looking for a bias issue. Could there be something wrong in the relays? George N9AUP -- View this message in context: http://elecraft.365791.n2.nabble.com/K2-Output-issues-in-Tune-tp7566472.html Sent from the Elecraft mailing list

Re: [Elecraft] My K2 adventure with antenna static discharge

2012-03-24 Thread N9AUP
For reasons of convenience, the resistors are mounted on the antenna side of the tuner. Since I'm tuning from 3.5 mHz through 15 mHz into a roughly 10.5 meter linear loaded dipole, the impedance in some instances is quite high, thus the large value of resistors. regards, George -- View this mes

[Elecraft] My K2 adventure with antenna static discharge

2012-03-24 Thread N9AUP
o evidence of a static build-up. For whatever it's worth. . . George N9AUP -- View this message in context: http://elecraft.365791.n2.nabble.com/My-K2-adventure-with-antenna-static-discharge-tp7401915p7401915.html Sent from the Elecraft mailing list a

Re: [Elecraft] Q7 failure in K2

2012-02-18 Thread N9AUP
OK Don, I pulled one leg of D9 and saw 54K forward and infinite reverse on the DVM (no KAT2) so I'm guessing that's ok for a Schottky diode. I just now checked the tuner taps and the antenna was charged up pretty good. . .that's amazing since there's hardly a breeze and it isn't below freezing ou

Re: [Elecraft] Q7 failure in K2

2012-02-18 Thread N9AUP
Thanks Don, I've now pulled the remains of Q7 and also removed Q8. I checked the bias and it is at .64 volts and present at both base pads. This is a K2/10, so does that rule out the static antenna charge theory? I have a sort of crude transistor check which consists of connecting ohm meter - t

[Elecraft] Q7 failure in K2

2012-02-18 Thread N9AUP
hange bands. There was a considerable static build-up on the antenna and I got a small spark when I went to change a tap...and the Q7 let go at the same time. That could have been a complete coincidence. . .but it still seems strange. Any thoughts or experience regarding possible causes? thanks

[Elecraft] K2 SSB Mods

2012-01-07 Thread N9AUP
rse? I do intend to eventually drive an outboard linear with my K2 Thanks, George N9AUP -- View this message in context: http://elecraft.365791.n2.nabble.com/K2-SSB-Mods-tp7162439p7162439.html Sent from the Elecraft mailing list archive at