Chapter 2 Radio Power; General - Motorola APX 1000 Detailed Service Manual

Chapter 2 Radio Power

This chapter provides a detailed circuit description of the power distribution of an ASTRO APX 1000
radio.
2.1

General

In the ASTRO APX 1000 radio, power (B+) is distributed to two boards: the main board and the
keypad board
Power for the radio is provided through a battery supplying a nominal 7.5 Vdc directly to the
transceiver. The following battery types and capacities are available:
Part Number
NNTN8128_
PMNN4424_
PMNN4448_
(Figure 2-1).
Table 2-1. IMPRES Batteries
Description
Li-Ion 1900 mAh
Li-Ion 2300 mAH
Li-Ion 2700 mAh