I read 12098.20 down to 12084.54 at TP3 in the PLL Reference Oscillator Range test.
I checked the windings of T5 very carefully, as well as the resistances between pads - they appear correct. The soldering at T5 and Q18 looks good. The RF Voltages at Q18 are all zero :-( ... Dead? DC Voltages at U3: Pin 6: 4.02 Pin 7: 8.02 Pin 8: 0.00 RF Voltages at U3, Pin 3 & 6 are all zero :-( On Tue, Nov 14, 2006 at 07:24:04AM -0500, Don Wilhelm wrote: > David, > > Do you read a proper frequency at TP3? Does the PLL Reference Oscillator > Range test produce the correct frequencies? (see the manual page 60). > > If the answer to the above question is YES, then check the winding of T5. > Be certain the turns are correct and the leads are inserted into the correct > holes. Check the tinning and soldering. Check the soldering in the > vicinity of T5 and Q18. What are the RF Voltages that you read at the gate > and source of Q18? > > Check the DC Voltages (compare to chart in Appendix E) at U3. What are the > RF Voltages at U3 pin s 3 and 6? > > 73, > Don W3FPR > > > -----Original Message----- > > > > I don't know. Must be asleep at the switch. > > Here's what's what so far this end. > > The probe verifies -- it did read correctly in step 3 on page 46. > > The leads are correct. > > > > I have replaced the suspect diode but the probe will not read anything > > at TP1. > > > > I have constructed the RF Probe and connected it to my DMM. > > It reads voltages at certain points, but sees nothing at TP1. > > > > > -- David Dawson _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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
