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MU 904-ZG/…

Colinear 4 dB Mobile Antenna for the 900 MHz Band
Description
  • 4 dB mobile antenna with black-chromed, stainless steel whip.
  • 3 models, type “l”, “m” and “h”, cover band segments suiting the most common 900 MHz CELLULAR networks such as EAMPS, ETACS, NMT-900 and EGSM.
  • Stainless steel ZG-mount with M8 x 1-thread whip-fastening system.
  • Simple mounting exclusively with access from the outside.
  • Choice between two connection principles: ZG-mount: FME-connection (supplied without cable).
  • ZGP4-mount: Permanently attached 4 m low loss cable terminated with FME-connector.
Specification
Electrical
Model MU 904-ZG/…
Frequency 900 MHz-band covered by three models
Antenna Type Collinear mobile antenna
Max. Input Power 60 W
Polarisation Vertical
Impedance 50 Ω
VSWR ≤ 1.3 @ f. res.
Bandwidth ≥ 50 @ VSWR ≤ 1.5
≥ 100 @ VSWR ≤ 2.0
Gain (EIA RS-329-1) 4 dB
Mechanical
Materials Whip : Stainless steel and brass, black-chromed
Mount : Black-chromed brass
Weather- and shockproof plastics
Stainless steel
Installation Torque 7.5 ±1 Nm
Colour Black
Historic Brand Amphenol Procom
Antenna Mount Type Hole Mount
Height Approx. 320 mm / 12.60 in.
Weight ZG-version : Approx. 100 g 0.22 lb.
ZGP4-version : Approx. 240 g / 0.53 lb.
Mounting 21 mm dia. hole
Ordering Codes
Model Product No. FrequencyAdditional Information

MU 904-ZG/l

 130001182 824 – 894 MHz (EAMPS) ZG-mount with FME

MU 904-ZG/m

 130001185 872 – 950 MHz (ETACS) n/a

MU 904-ZG/h

 130001180 880 – 960 MHz (EGSM&NMT-900) n/a

MU 904-ZGP4/l

 130001184 824 – 894 MHz (EAMPS) ZGP4-mount with 4 m cable and FME-connector

MU 904-ZGP4/m

 130001186 872 – 950 MHz (ETACS) n/a

MU 904-ZGP4/h

 130001181 880 – 960 MHz (EGSM&NMT-900) n/a
Additional Information
Installation

This antenna should always be mounted on the car roof to ensure best omnidirectional coverage. The antenna is provided with our type ZG-mount for mounting from the outside in a 21 mm dia. hole.
The ZG-mount is provided with an M8 x 1 thread mount system. This construction meets the demand for a low-profile mobile mount with a slim appearance and with protection against theft of the antenna whip.
When cleaning the car in car-washing machines, the whip is easily removed using a spanner, size 12 mm. The whip is refitted again by screwing it onto the thread stud and tightening it with the spanner.

1. Installation Dimension

ZG Mount 21 38 130 GB

Build-in depth : 10.5 mm

2. Installation Steps

Do not use sealer on rubber gasket or other places.

3. Tuning

The antenna is delivered factory-tuned and requires no further tuning.

Please Note

To help selecting the correct model for a specific cellular network please consult the survey of cellular network frequencies under USEFUL DATA in our catalogues.

The whip is compatible with all below mounts

ZG ZGP4 Mount GB

PROCOM A/S reserves the right to amend specifications without prior notice
PROCOM A/S • Smedetoften 12 DK 3600 Frederikssund • Denmark
Generated : 2026-06-27 Version 1