Telex ALP-450 User's Manual
Contents
1. END VIEW Figure 1 Antenna Mounting Microphone Stand Adaptor Attach the microphone stand adaptor using the screws and spacers supplied with it See Figure 2 i ALP 450 ALTERNATE LOCATION FOR MIC BOOM SPACERS J jfk SCREW FRONT VIEW SIDE VIEW Figure 2 Microphone Stand Adaptor Angle Bracket Attach the angle bracket using the nuts lockwashers and screws supplied with it Self tap ping screws are supplied for securing the bracket to wood metal or other surfaces See Figure 3 ALP 450 AE SCREW we H SLOTTED SCREW AL l LOCKWASHER ANGLE BRACKET Figure 3 Angle Bracket 2 Clamps Clamps are provided for mounting the ALP 450 on pipes scaffolds tree limbs etc Attach the clamps with the hardware supplied See Figure 4 ALP 450 NOTE OFFSET INCLAMPS BOLT nN LOCKWASHER ARAT Figure 4 Clamps Do not clamp the antenna to horizontal metal objects that extend past the clamp See Figure 5 This will detune the antenna and cause loss of range and performance BAD Figure 5 Clamp Mounting oe Coax Cable For best results 1t is recommended that cable losses be kept under 4 dB Every 3 dB of signal loss re sults in a system operating distance reduction of 25 See the accessories section of this manual for spe cial low loss cable assemblies MOUNTING SUGGESTIONS Telex ALP 450 EE THIS END TOWARD TRANSMITTER Mic Boom Telex ALP 452. 0 mee THIS END TOWARD TRANSMITTER Wall Telex ALP 450 EE THIS END TOWARD TRANSMITTER Mic Stand Telex ALP 450 EE THIS END TOWARD TRANSMITTER Top Surface NAV qs 2 Telex AN ALP 450 E THIS END TOWARD TRANSMITTER Pipe or Scaffold Telex ALP 450 EE THIS END TOWARD TRANSMITTER Combination Bracket with Clamps _5 m THIS END TOWARD TRANSMITTER ALP 450 WI AY TNI Wo NS CUT OFF IF POSSIBLE NA IS aN YPN Tree Limb ACCESSORIES Special Low Loss Antenna Cables with TNC Connects Length Part No 10 Ft 3 meters 690419 25 Ft 7 6 meters 71151 025 50 Ft 15 meters 71151 050 75 Ft 23 meters 71151 075 100 Ft 30 meters 71151 100 PRINTED IN U S A Copyright 1995 by Telex TELEX COMMUNICATIONS INC All rights reserved 20 Sept 1995
3. TELEX TELEX COMMUNICATIONS INC 8601 East Cornhusker Highway P O Box 5579 Lincoln NE 68505 UHF Log Periodic Antenna Order No 71147000 PN802573 INSTRUCTION MANUAL General Description The ALP 450 is a broadband directional log peri odic antenna It will receive any frequency from 450 to 900 MHz The gain of this antenna en ables it to receive signals from a greater distance than a typical whip type antenna Log Periodic Antennas are also directional like a TV antenna and will have the best reception when pointed at the transmitter This yields the benefit of less interference from unwanted signals coming from the back or side of the antenna SPECIFICATIONS average AI E E E 4 6 dBd I PON r Boan Vd E umidebaruniatapentncen as sodspeund eenycues 120 Front to Back RAO yanercctieessenecunertaoieeosbneianes bctrunssenetuneriacibassbeesanep bcthusgseneteneriasees 19 4 dB YE ares ces geste ea E E E E EE E E E E ET 1 5 1 AA MA ANC seo E E ERRi 50 ohm pur Connec OF serseri oan A E A R TNC Antenna Placement The ALP 450 should be placed in a position that has a clear view of the transmitter s for best re sults Obstructions such as walls ceilings and metal objects will reduce range and performance MOUNT VERTICALLY Antenna Mounting The ALP 450 is supplied with a variety of mount ing hardware It should always be mounted verti cally with the arrows pointing toward the transmitter s See Figure 1
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