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M2 Antenna Systems, Inc. 4402 N. Selland Ave. Fresno, CA 93722 

Tel: (559) 432-8873 Fax: (559) 432-3059 Web: www.m2inc.com 

©2015 M2 Antenna Systems Incorporated 

09/17/15 

Rev.02 

Model  ......................................... 370CP38 
Frequency Range ....................... 365 To 375 mHz 

*

Gain .......................................... 17.4 dBi 

Front to back .............................. 24 dB Typical 
Feed type ................................... Folded Dipole 
Feed Impedance. ....................... 50 Ohms Unbalanced

 

Maximum VSWR ........................ 1.6:1 
Input Connector .......................... “N” Female 
 

Power Handling .......................... 1.5 kW 
Boom Length / Dia ...................... 186” / 1”, 1-1/4” & 1-1/2” 
Maximum Element Length .......... 16” 
Turning Radius: .......................... 108” 
Stacking Distance ....................... 62” - 68” 
Mast Size .................................... 2” Nom. 
Wind area / Survival ................... 1.5 Sq. Ft. / 100MPH 
Weight / Ship Wt. ........................ 8 Lbs. / 10 Lbs. 
 

M2 Antenna Systems, Inc. 

Model No: 370CP38 

FEATURES: 

The 370CP38 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 long haul tropo communications. 
 

The CNC machined driven element module is O-ring sealed and weather tight for low maintenance and long-term 

peak performance. Internal connected are encapsulated in a space-age silicone gel that seals out moisture and improves 
power handling. The 3/16” 6061-T6 rod elements are centered on the boom to minimize interaction and maintain good 
ellipticity. Insulators are UV stabilized and locked in place with stainless keepers. Rugged construction, uncompromising 
performance for the boom length: that’s the M

2

 370CP38! 

SPECIFICATIONS: 

*Subtract 2.14 from dBi for dBd 

Summary of Contents for 370CP38

Page 1: ...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 long haul tropo communications The CNC machined driven element module is O ring sealed and weather tight for low maintenance and long term peak per...

Page 2: ...nd forefinger to hold the retainer over the end of the PUSH TUBE 3 8 x 3 tube supplied in the kit internal fingers on retainer dished into tube HOLD THE ELEMENT FIRMLY TO PREVENT IT FROM SLIDING OFF CENTER and press the retainer onto the element end and continue until retainer butts on insulator button Locking pliers lightly clamped up against opposite button insulator will help maintain center re...

Page 3: ... The boom to mast plate is normally mounted to the boom at the balance point Since the feed line represents significant weight it is best to have it attached and fastened to the boom with cable ties before final mounting the plate Use two 1 U bolts and the stainless nuts and lock washers provided DO NOT OVER TIGHTEN 2 U bolts and stainless steel nuts lockwashers are provided for mounting the anten...

Page 4: ...370CP38 BOOM LAYOUT REAR OF ANTENNA FRONT OF ANTENNA ...

Page 5: ...370CP38 DIMENSION SHEET ...

Page 6: ...OTE INSTALLATION OF THE D E BLOCKS DETERMINES THE CIRCULARITY OF THIS ANTENNA THE ORIENTATION OF THE BLOCKS FOR RHC RIGHT HAND CIRCULARITY IS SHOWN BELOW ON THE DIMENSION SHEET FOR LHC LEFT HAND CIRCULARITY SIMPLY REVERSE ONLY ONE OF TWO D E BLOCKS TO THE OPPISITE SIDE OF THE BOOM DO NOT TO REVERSE THE DIRECTIONS OF THE BALUNS ...

Page 7: ...POLARITY SWITCH OPTION DETAILS REAR OF ANTENNA JUNCTION BLOCK HORIZONTAL D E P S VERTICAL D E BALUN BALUN RG 6 3 4 RG 6 1 4 ...

Page 8: ...370CP38 VSWR ...

Page 9: ...G BAR 1 4 X 3 4 M2ASB0080 4 U BOLT CRADLE 2 2 U BOLT 1 5 2 PENETROX ZINC PASTE CUP 1 ASSEMBLY MANUAL 1 HARDWARE BUTTON INSULATORS 76 SHAFT RETAINER SS 76 NUT 5 16 18 SS 8 LOCKWASHER 5 16 SS 8 SCREW 8 32 X 1 3 4 SS 4 SCREW 8 32 X 1 1 2 SS 4 SCREW 8 32 X 1 1 4 SS 3 LOCKNUT 8 32 SS 8 SETSCREW 8 32 X 1 4 SS 8 CABLE TIE 8 NYLON 4 SEAL NUTS 3 8 32 8 ALLEN HEAD WRENCH 5 64 1 PUSH TUBE 3 8 X 3 1 POLARITY ...

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