User's Manual

Chapter 9 – SocketModem CDMA (MTSMC-C)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 124
Sources for Peripheral Devices
CDMA Antenna
The integrated modem antenna connector is a MMCX connector. The MMCX connector incorporates
a 'Snap On' latching action in order to make the connection easier with an excellent RF performance.
An additional advantage is its small physical size, which is 50% of the standard MCX connector.
This type of connector is suitable for the standard ranges of flexible and semi-rigid cables. The
characteristic impedance of the MMCX coaxial connector is 50 ohm. The antenna manufacturer must
guarantee that the antenna will be working according to the radio characteristics presented in the
table below.
MMCX Plug
The SocketModem requires an MMCX plug to connect to an antenna.
MMCX Connector Example (right angle type)
Locking Power Plug
Switchcraft Power Plug 761K
A locking power plug can be ordered from:
Switchcraft
http://www.switchcraft.com
Order No: 761k
MMCX / SMA Adapter
A small MMCX / SMA adapter can be ordered from:
Amphenol
http://www.amphenol.com
Order No: 908-31100
Antenna Cable
An optional 6” antenna cable can be ordered from Multi-Tech Systems, Inc.
6-Inch Antenna Cable – SMA Jack to MMCX Plug