M2 Antenna Systems 248CP22A Manual

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SPECIFICATIONS:

Model ......................................... 248CP22A
Frequency Range ....................... 235 To 260 mHz
*Gain .......................................... 13.8 dBi
Front to back .............................. 20 dB Typical
Beamwidth ............................... E=36° H=40°
Feed type ................................... "T" Match
Feed Impedance. ....................... 50 Ohms Unbalanced
Maximum VSWR ........................ 1.5:1 Typical
Input Connector .......................... "N" Female

FEATURES:

The 248CP22A is high performance circular polarized antenna with a remarkably clean pattern. The pattern is
important in order to match the antenna's noise temperature with modern low noise preamps. This antenna is ideal for
satellite work but is also excellent for terrestrial uses like ATV, repeater operation, and long haul tropo DX.
The CNC machined driven element module is O-ring sealed and weather tight for low maintenance and long-term
peak performance. Internal connections are encapsulated in a space-age silicone gel that seals out moisture and im-
proves power handling. The 3/16" 6061-T6 rod elements are centered to minimize interaction and maintain good elliptici-
ty. Insulators are UV stabilized and locked in place with stainless keepers. Rugged construction, uncompromising perfor-
mance for the boom length: that's the M
M2 Antenna Systems, Inc. 4402 N. Selland Ave. Fresno, CA 93722
M2 Antenna Systems, Inc.
Model No: 248CP22A
*Subtract 2.14 from dBi for dBd
2
248CP22A!
Tel: (559) 432-8873 Fax: (559) 432-3059 Web: www.m2inc.com
©2015 M2 Antenna Systems Incorporated
Power Handling .......................... 1 kW
Boom Length / Dia ...................... 139-1/2" / 1"
Maximum Element Length .......... 25"
Turning Radius: .......................... 84"
Stacking Distance ....................... 68" High & 71" Wide
Mast Size .................................... 1-1/2" to 2" Nom.
Wind area / Survival ................... 0.93 Sq. Ft. / 100 MPH
Weight / Ship Wt. ........................ 5 Lbs. / 8 Lbs.
9/15/15
Rev.00

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Summary of Contents for M2 Antenna Systems 248CP22A

  • Page 1: Specifications

    *Subtract 2.14 from dBi for dBd FEATURES: The 248CP22A is high performance circular polarized antenna with a remarkably clean pattern. The pattern is important in order to match the antenna’s noise temperature with modern low noise preamps. This antenna is ideal for satellite work but is also excellent for terrestrial uses like ATV, repeater operation, and long haul tropo DX.
  • Page 2 248CP22A DIMENSION SHEET...
  • Page 3 248CP22A ASSEMBLY MANUAL TOOL REQUIRED FOR ASSEMBLY: screwdriver, 11/32 nut driver or wrench, 7/16” and 1/2” socket or end wrenches, measuring tape. 1. Assemble the boom using 8-32 X 1-1/4 screws and locknuts to join sections. (SEE DIMENSION SHEET). ASSEMBLING THE HORIZONTAL ELEMENTS 2.
  • Page 4 248CP22A ASSEMBLY MANUAL ASSEMBLING THE VERTICAL ELEMENTS Note: The vertical element set is shifted forward on the boom by 1/4 wave lengths. This increases isolation between element planes, improving circularity and ease of phasing / matching the two element sets.
  • Page 5 248CP22A D.E. & PHASING LINE DETAIL 2.75 1.625 D.E. BALUN JUNCTION BLOCK P.S. BLOCK D.E. BLOCK D.E. BALUN PHASE LINE PHASE LINE 3/4 WAVE 1/4 WAVE SCREW 8-32 X 1-1/4”...
  • Page 6 248CP22A BOOM TO MAST...
  • Page 7 248CP22A PARTS & HARDWARE DESCRIPTION QTY. Boom section #1, 1 x .058 x 55" SOE ........ 1 Boom section #2, 1 x .058 x 60" SOE ......... 1 Boom section #3, 1 x .058 x 23” ........... 1 Boom extension tube, 1” x 0.058 x 10-1/2” ......1 Elements, 3/16"...

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