STR450

STR450 UHF RECEIVER OPERATING INSTRUCTIONS These operating instructions are intended to provide the user with sufficient information to install and operate the unit correctly. The Wood & Douglas STR450 is a single channel synthesized UHF receiver. The unit is intended to fulfil the numerous OEM applications by virtue of its highly flexible design approach, miniature size and cost-effective performance. The unit complies with MPT1329 and as such does not require an operating licence in the UK. It is also approved to various EC specifications. INSTALLATION The STR450 is intended to fit easily and with minimum space requirements into the user's own equipment housing. The complete module is housed in a tin-plated enclosure and a bracket allows the module to be fitted in one of two planes using two screws. Figure 1 Figure 2 www.DataSheet4U.com - Free DataSheet Site. CONNECTION The type of radio antenna connector (via RF) is determined by the letter designator as follows: SAP- SMB miniature coaxial connector flying lead with a BNC connector PTFE (bush) feedthrough RSSI (when fitted) Figure 3 The audio output (AF), squelch output (SQ) and DC supply (+V) connections are made via feedthrough pins. These pins incorporate RF filtering, thus ensuring compliance with the spurious radiation levels required by MPT1329 and similar specifications. The squelch output (SQ) is an NPN open collector transistor driver. Connecting the anode of a LED to the input supply rail and the cathod...