Transcript
27-3-3 Revision C, May 2016 Ground Plane Antennas ASP634, ASP635, and ASP636 INSTALLATION PROCEDURES
These antennas may be furnished cut to a specific frequency. If no frequency is specified, the longest length is supplied. 1. If the antenna elements are not cut to the desired frequency, see Figures 1 and 2 to determine the length needed. Round off the end of each rod to remove any sharp edges after making any length adjustments.
3. Be sure the pipe and mounting structure are mechanically stable enough to support the antenna under environmental conditions; use guy lines on the structure as required for adequate strength. 4. The use of PTFE or similar lubricant on the threaded portions of the antenna, prior to assembly, will protect from the weather and ease future disassembly.
2. Attach a 50 ohm cable (not supplied) with a PL-259 connector (not supplied) to the connector at the base of the antenna. Mount the antenna on a standard 1-1/4” threaded pipe (not supplied) running the cable through the pipe. Route the cable to the radio as required.
Radiator 19-16-1 (steel) ASP634 19-16-2 (aluminum) ASP635
Radial Rod 19-14-1 (steel) ASP634 19-198-1 (aluminum) ASP635 Base 19-13-2 19-13-3
ASP634 ASP635
SAFETY NOTICE The installation, maintenance, or removal of an antenna requires qualified, experienced personnel. CommScope installation instructions are written for such installation personnel. Antenna systems should be inspected once a year by qualified personnel to verify proper installation, maintenance, and condition of equipment. CommScope disclaims any liability or responsibility for the results of improper or unsafe installation practices. It is recommended that transmit power be turned off when the field installation is performed. Follow all applicable safety precautions as shown on this page.
1-1/4” Pipe (not supplied)
Frequency
Radiator
Radials
406-420 MHz
6”
6-3/4”
420-450 MHz
5-1/2”
6”
450-460 MHz
5”
5”
460-470 MHz
4-3/4”
5”
470-512 MHz
4-1/2”
4”
Note: Lengths are approximate. Use an in-line wattmeter and trim for best VSWR.
Frequency (MHz)
Figure 1. Cutting Information for 120-512 MHz Models. (Continued on page 2) www.commscope.com © 2016 CommScope, Inc. All rights reserved. Visit our website at www.commscope.com or contact your local CommScope representative or BusinessPartner for more information. All trademarks identified by ® or ™ are registered trademarks or trademarks, respectively, of CommScope, Inc. 27-3-3 C (05/16)
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27-3-3 (Continued from page 1)
Note: Lengths are approximate. Use an in-line wattmeter and trim for best VSWR.
Radiator ASP3BL ASP636 Lockwasher
Base 19-13-1 ASP636 Lockwasher Radial ASP3BL
Frequency (MHz) Remove and discard “pal-nut” or “caplug”.
1-1/4” Pipe (not supplied)
Radiator and Radial Length
Figure 2. Cutting Information for 25-54 MHz Models.
Do not install near power lines. Power lines, telephonelines,andguywireslookthesame. Assume any wire or line can electrocute you.
Do not install on a wet or windy day or when lightning or thunder is in the area. Do not use metal ladder.
Wear shoes with rubber soles and heels. Wear protective clothing including a longsleeved shirt and rubber gloves.
www.commscope.com © 2016 CommScope, Inc. All rights reserved. Visit our website at www.commscope.com or contact your local CommScope representative or BusinessPartner for more information. All trademarks identified by ® or ™ are registered trademarks or trademarks, respectively, of CommScope, Inc. 27-3-3 C (05/16)
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