[DSP-10] No tx out
Rajiv Dewan, N2RD
[email protected]
Fri, 23 Aug 2002 00:51:47 -0000
The receive seems fine. The DSP-10 seems to hear better than my Icom
IC746.
I am, however, getting no power out.
D1-A2 0.82v -- so it seems biased ok
The DC voltages for MMICs and Q2 seem Ok too:
U4 pin 3 measured 3.5 v suggested 3.6v
U5 pin 3 measured 4.4v suggested 4.6v
Q2 emitter measured 1.12v suggested 1.2v
Q2 base measured 1.83v suggested 1.9v
I measured the AC voltage at U4 pin 3, U5 pin3 and Q2 collector
(across C51) using the probe shown in tests and measurements. (The
probe works ok, I used it for measuring outputs of LO buffers).
And I get no AC voltage!!
What should I see at these pins?
An y help appreciated.
- -
Rajiv Dewan, N2RD
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