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MU 4-Z/…

colinear 4 dB Mobile Antenna for the 450 MHz Band
Description
  • 4 dB mobile antenna series with colinear, stainless steel whip with toggle joint.
  • Models with Z-mount or MG-magnetic mount.
  • Choice between Z-mount with FME-connection (supplied without cable) or ZP4-mount with factory fitted 4 m cable terminated with FME-connector.
  • MG-models provided with FME-connection directly on the mount (without cable).
  • Z-type models available in bright or black chromed versions. MG-models available in bright polished only.
Specification
Electrical
Model MU 4-Z/…
Frequency Models within 380 – 470 MHz
Antenna Type Collinear stainless steel mobile whip antenna
Max. Input Power 100 W
Polarisation Vertical
Impedance 50 Ω
VSWR ≤ 1.3 @ f. res.
Bandwidth > 15 MHz @ VSWR < 1.5
> 30 MHz @ VSWR < 2.5
Gain (EIA RS-329-1) 4 dB
Mechanical
Materials Whip: Stainless steel and brass, bright polished/chromed or black-chromed
Mount: Chromed brass (bright or black)
Weather- and shockproof plastics
Stainless steel
Installation Torque 7.5 ±1 Nm
Colour Bright or black (see above)
Historic Brand Amphenol Procom
Antenna Mount Type
Hole MountMagnetic Mount
Height Approx. 590 mm / 23.23 in. (dep. on freq.)
Weight Z-version : Approx. 230 g / 0.51 lb.
ZP4-version : Approx. 370 g / 0.82 lb.
MG-version : Approx. 930 g / 2.05 lb.
Mounting 21mm dia. hole (For roof thicknesses 2 mm up to 7.5 mm mounting hole should be 22mm dia.)
Mounting Plate Thickness Max. 2.0 mm (Models up to 7.5 mm on request)
Ordering Codes
Model Product No. FrequencyAdditional Information

MU 4-MG/s

 130000902 380…410 MHz n/a

MU 4-MG/f

 130000903 406…430 MHz n/a

MU 4-MG/h

 130000904 440…470 MHz n/a

MU 4-MG/l

 130000905 420…450 MHz n/a

MU 4-MG/CEL3

 130001468 425 – 440 MHz n/a

MU 4-MG/CEL1

 130000906 450 – 470 MHz n/a

MU 4-MG/CEL4

 Contact_31 414 – 430 MHz n/a

MU 4-BZ/f

 130001001 406…430 MHz BZ-mount with FME BLACK

MU 4-BZP4/f

 130000977 406…430 MHz BZP4-mount with 4 m cable BLACK

MU 4-BZ/h

 130001004 440…470 MHz BZ-mount with FME BLACK

MU 4-BZP4/h

 130000987 440…470 MHz BZP4-mount with 4 m cable BLACK

MU 4-BZ/l

 130000997 420…450 MHz BZ-mount with FME BLACK

MU 4-BZP4/l

 130000993 420…450 MHz BZP4-mount with 4 m cable BLACK

MU 4-BZ/CEL4

 130001010 414 – 430 MHz BZ-mount with FME BLACK

MU 4-BZ/CEL1

 130001000 450 – 470 MHz BZ-mount with FME BLACK

MU 4-BZP4/ CEL1

 130000988 450 – 470 MHz BZP4-mount with 4 m cable BLACK

MU 4-BZP4/ CEL4

 130000989 414 – 430 MHz BZP4-mount with 4 m cable BLACK

MU 4-BZP4/ CEL3

 130000991 425 – 440 MHz BZP4-mount with 4 m cable BLACK

MU 4-BZP4/ CEL2

 130000996 440 – 455 MHz BZP4-mount with 4 m cable BLACK

MU 4-BZ/s

 130000999 380…410 MHz BZ-mount with FME BLACK

MU 4-BZP4/s

 130000976 380…410 MHz BZP4-mount with 4 m cable BLACK

MU 4-Z/f

 130000975 406…430 MHz Z-mount with FME BRIGHT

MU 4-ZP4/f

 130000978 406…430 MHz ZP4-mount with 4 m cable BRIGHT

MU 4-Z/h

 130000983 440…470 MHz Z-mountwith FMEBRIGHT

MU 4-ZP4/h

 130000986 440…470 MHz ZP4-mountwith 4 m cableBRIGHT

MU 4-Z/l

 130000992 420…450 MHz Z-mount with FME BRIGHT

MU 4-ZP4/l

 130000994 420…450 MHz ZP4-mountwith 4 m cableBRIGHT

MU 4-Z/CEL4

 130001002 414 – 430 MHz Z-mount with FME BRIGHT

MU 4-Z/CEL1

 130001003 450 – 470 MHz Z-mount with FME BRIGHT

MU 4-ZP4/ CEL1

 130001006 450 – 470 MHz ZP4-mount with 4 m cable BRIGHT

MU 4-ZP4/ CEL4

 130001007 414 – 430 MHz ZP4-mount with 4 m cable BRIGHT

MU 4-ZP4/ CEL3

 130001009 425 – 440 MHz ZP4-mountwith 4 m cableBRIGHT

MU 4-ZP4/ CEL2

 130001012 440 – 455 MHz ZP4-mountwith 4 m cableBRIGHT

MU 4-Z/s

 130001015 380 – 410 MHz Z-mountwith FMEBRIGHT

MU 4-ZP4/s

 130001016 380…410 MHz ZP4-mount with 4 m cable BRIGHT

MU 4-MG/CEL2

 130001328 440 – 455 MHz n/a

MU 4-BZ/CEL2

 130001011 440 – 455 MHz BZ-mount with FME BLACK

MU 4-BZ/CEL3

 130001005 425 – 440 MHz BZ-mount with FME BLACK

MU 4-Z/CEL2

 130001466 440 – 455 MHz Z-mount with FME BRIGHT

MU 4-Z/CEL3

 130001467 425 – 440 MHz Z-mount with FME BRIGHT
Additional Information
The whip is compatible with all below mounts

Whips from the Z/ZP4 mounts and the MG-mount are NOT compatible.

Hat screw option:

(Z-/ZP4-type models only): For antenna delivered with hat screw instead of wing screw add a K to the antenna designation.

Installation

The antenna whip comprises a ¼ λ section, a phase shifting coil, and a ½ λ section. The whip is fastened to the mount by means of our standard ball joint and wing screw system. The adjustable ball joint ensures that the whip can always be mounted in a vertical position independent of the angle of the installation spot.

The Z-mount is particularly well suited for mounting on car roofs because of its ability to be installed exclusively with access from the outside. The Z-Mount for roof thickness from 2 mm to 7.5 mm must be mounted from the inside.

However, the antenna can be installed anywhere on the car, as the Z-mount is equally well suited for mounting on e.g. trunk or wing.

The “MG”-mount antennas are provided with a large-diameter, thoroughly magnetized permanent ring magnet with an extraordinarily high attaching effect. A silicone layer applied to the whole contact surface protects the car roof and ensures maximum friction.

Please note that the whips from the Z/ZP4-mounts and the whips from the MG-mount are not compatible.

1. Installation Dimension

Z Mount 21 22 38 130 GB

2. Installation Steps

Z Mount inst step samlet GB

Do not use sealer on rubber gasket or other places.
3a. TUNING

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

MU 4 Z Z and ZP4 models

3b. Tuning

MU 4 Z MG models

PLEASE NOTE

For safety reasons:
When using the MU 4-MG/…, car speed must not exceed 140 km/h.

PROCOM A/S reserves the right to amend specifications without prior notice
PROCOM A/S • Smedetoften 12 DK 3600 Frederikssund • Denmark
Generated : 2026-06-26 Version 1