User's Manual

Introduction
Crescendo VHF Half-Duplex User Manual Page 6 of 74
1. Introduction
Crescendo is a series of data-driven and packet-driven radio modems for high-speed data applications.
This manual is specific to Crescendo VHF Half-Duplex. Some of the relevant features of this model include:
Full VHF band switching (148-174MHz)
5W (+ 37dBm) maximum transmit power
Wideband (25kHz) or narrowband (12.5kHz) channels,
with software selectable frequency raster (6.25kHz,
12.5kHz or 25kHz)
Raw air rate 19.2Kbit/s (25kHz channels) or 9.6Kbit/s
(12.5kHz channels)
Half-duplex data-driven or packet-driven operation with
Automatic Repeat Request (ARQ)
Windows GUI for configuration and diagnostics
(Cruise Control)
Internal configuration menu with diagnostic and statistical
information
LED front panel user interface
Two RS-232 serial ports (main and auxiliary)
Operating voltage 9 to 16VDC
Type Approvals:
AS-4295
ETSI (planned)
FCC (planned)
Industry Canada (planned)