[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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