[Techtoolslist] Updating - W-G 6100 Vector Monitor FAQ & Guide V1.1
John Robertson
jrr at flippers.com
Wed Dec 6 17:26:23 EST 2023
Who is maintaining this?
I ask because on page 8 there is a typo - that I've only just realized
when I was going through trying to update my WG monitors as we have a
pair of SWs that are running WGs (with the LV2000 kits).
It says "R701 (1.3K) changed from +/-2%, 1/4W to +/-1%, *5*W.(*)"
That can't be right, I am certain it should instead say:
"R701 (1.3K) changed from +/-2%, 1/4W to +/-1%, *_0._5*W.(*)"
and it would be clearer with:
"R701 (1.3K) changed from +/-2%, 1/4W to +/-1%, _*1/2*_W.(*)"
It makes no sense otherwise. There simply can't be enough current for a
5W resistor as this is ground biasing the base of a small signal transistor.
Then there is the question of Q604/Q704 (MPSU07) transistors upgraded to
TO-202 (NTE-49) which looks like another problem as there is no NTE-49
and hasn't been for decades. That was the same as the ECG-49, which was
a NPN-Si, 125Vcbo, 2A, Gen Purpose TO-202. Anyone have a workable
replacement to save me the lookup time?
I'm thinking a Rv1.2 is overdue...
John :-#)#
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