6815854H01-A June 15, 2005
Theory of Operation: Main Board Major Sections 3-9
Figure 3-6. XTL 1500 Main Board Sections (VHF Mid Power)—Side 1
Table 3-3. XTL 1500 Main Board Sections (VHF Mid Power)—Side 1
1 Secure Connector (J0501) 8 Controller Section
2 Front Connector (J0401) 9 Audio Power Amplifier (PA)
3 RX Back-End (ABACUS III) 10 RX VCO
4 16.8 MHz Reference Oscillator 11 TX VCO
5 IF Filter 12 TX PA
6 RX Front-End 13 TX Power Control
7 Daughtercard
1
2
3
4
5
6
7
8
9
10
11
13
12
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