Other problems discovered along the way with this partially assembled kit. Hi Don,
Thank you so much for sticking with me on this. K2 #2438 Ver. A with no updates. I had measured 1.48V at bases of Q7 and Q8. (installed.) And as you suggested I removed the PA transistors and now measure 0.63 at base terminals with PAs out. I don't know how you figured that it was PA Q7 and Q8 that were bad Don but you were spot on ! It looks like the PA bias circuit is working but would like your opinion. The table in the manual for Q13 says: E = 0.6V B= 1.3V C= 7.5V (With PA transistors in) My voltages are : E= 0.63 B= 1.2 C= 8.17 (With PA transistors out) Think I should go ahead and put the new PA transistors in leaving the old bias transistors Q11 and 13 in place ? Thanks 73, Jim / W1FMR PS... The 8T transmit voltage is 8.19v. ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
