Telex ALP-450 دليل المستخدم

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UHF Log Periodic Antenna
Order No. 71147000 PN802573
8601 East Cornhusker Highway, P.O. Box 5579, Lincoln NE 68505
INSTRUCTION MANUAL
General Description
The ALP-450 is a broadband directional log peri- Log Periodic Antennas are also directional (like a
odic antenna. It will receive any frequency from TV antenna) and will have the best reception when
450 to 900 MHz. The “gain” of this antenna en- pointed at the transmitter. This yields the benefit of
ables it to receive signals from a greater di

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Microphone Stand Adaptor Attach the microphone stand adaptor using the screws and spacers supplied with it. See Figure 2. 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. Figure 3 Angle Bracket -2-

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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. 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. GOOD BAD Figure 5 Clamp Mounting -3-

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Coax Cable For best results, it is recommended that cable losses See the accessories section of this manual for spe- be kept under 4 dB. (Every 3 dB of signal loss re- cial low loss cable assemblies. sults in a system operating distance reduction of 25%). MOUNTING SUGGESTIONS Mic Boom Mic Stand Wall Top Surface -4-

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Pipe or Scaffold Tree Limb Combination: Bracket with Clamps -5-

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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 -6-