Specifications

Description

General

The MICOM RM500 and RM500R are 500W HF-SSB continuous duty radio sets. Figure 1 shows a

general view of a typical 500W transceiver (the RM500R).

Figure 1. RM500R, General View

RM500 and RM500R expand the MICOM-3 product line by offering higher transmit power and thus

longer reach, and improved communications under bad propagation conditions and/or strong

interference.

An RM500 or RM500R radio set consists of a standard MICOM-3 transceiver tightly integrated with a

500W RF power amplifier and a 110/220 VAC, 50/60 Hz AC-powered power supply, all contained

within a compact chassis suitable for installation in 19 in. racks and shelves. The AC input voltage

range is automatically switched between 110 and 220 VAC, and therefore the equipment can be

used in the United States of America as well as in other countries.

Internal cooling fans enable operation over a wide range of temperatures, for continuous-duty data

transmission. The radio has multiple accessories connectors, for system interconnections.

For operation in multiple-transmitter or split sites, the RM500 and RM500R can be ordered with an

interface for the Pre-Selector/Post-Selector (PPS) (option G65).

Note

The G65 option does not include the Pre-Selector/Post-Selector (PPS) unit,

which must be separately ordered.

The RM500/RM500R transceiver is very well suited for base station applications, and can be directly

connected to a wide range of broadband or tuned antennas, including whip, dipole, traveling wave,

delta, and semi-delta antennas.

To obtain maximum forward power, a low VSWR antenna system should be used; however, in case of

excessive VSWR protection circuits prevent damage by reducing the transmit power to safe values.

2 6888882V03