I still have problems with my K3.The sensitivity is very low and I can´t do the low power tx calibration. I loaded the latest firmware and checked all the settings again and again. Gary Surrency, from the elecraft support, suggested to do a few measurements.These are the results.A friend helped me, because I don´t have an rf-probe myself.The results are at the end of this page! Garry is on a trip and he´ll be back on Thursday, so he can´t help me now.I´ve got enough time to do some repair work and any help would be appreciated.
> > > > 111mV RMS at the center pin of coax jumper from the KREF2 board, that > goes into RF board connector J65. > > > > 37mV RMS on the right pin on both sides of the crystal filter pins. > > > > 346mV RMS at the BPIF jumper to the left of the KNB3 board. > > > > 189mV RMS at jumper W4 near the KIO3. This may be a jumper wire that is > plugged into J64A on later sn. K3s. > > > > 176mV RMS at P71A pin 3 on the LPA.This is near the left rear of the > LPA, right across from the KIO3 board. Pin 1 is to the rear. > > > > 15.5V RMS at P71C pin 1 on the LPA. This connector is at the rear of the > LPA board. Pin 1 is on the left. > > > > Examine the parts and connections under the RF Board in the bandpass > filter area, to see if there are any poorly soldered or damaged parts. > > > > > > My results: > > Board connector J 65 shows 35-40mV. All other measurements were 0. > > My friend thinks it´s maybe a problem with the 2nd mixer.We also looked > for damaged parts but we could not find any. > > > > Can you help? > > > > > > vy73 Chris-OE5CSP > > > > -- > 73 Richard AD7FZ > Elecraft Support > support -- View this message in context: http://www.nabble.com/Low-sensitivity-and-low-power-calibration-failure-tp18335793p18335793.html Sent from the Elecraft mailing list archive at Nabble.com. _______________________________________________ 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
