[Drake] TR-7 - Part two
GGLL
nagato at arnet.com.ar
Wed Dec 3 21:12:17 EST 2008
Well, I've further checked the final amplifier; its components read
within tolerance; with the exception of idle currents, 400 mA for
drivers, 130 mA for finals. I've reset them to 200 mA and 600 mA
respectively.
Anyway, 10 mtr. band still is way down in my wattmeter scale relative
to the other bands, 40..50 watts at most, and this when predriver adj.
is set for full gain (but in this situation, 80 Mtr. self oscillate).
Final transistors tested ok in "diode" test mode, but, they have small
inverse leakage from both enitter and collector to base (500 Kohms)
when tested with analog multimeter (R * 1K). Bases are left open,
unsoldered.
Any opinion, tip, etc. is surely welcome.
Thanks in advance
Regards
Guillermo - LU8EYW.
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