MU 909-XP4 - Datasheet

Electrical
Model	MU 909-XP4/…
Frequency	820 – 940 MHz – covered by two models
Antenna Type	End-fed ½ λ dipole mobile antenna
Max. Input Power	25 W
Polarisation	Vertical
Impedance	50 Ω
VSWR	≤ 1.2 @ f. res.
Bandwidth	≥ 25 MHz @ VSWR ≤ 1.5 ≥ 50 MHz @ VSWR ≤ 2.0
Gain (EIA RS-329-1)	2 dB

Mechanical
Compliance	ECE R118.02 approved cable
Materials	Whip : Polyethylene-covered spring steel wire Mount : Black-chromed brass Weather- and shockproof plastics Surface treated steel
Cable	4 m cable terminated with FME-connector
Installation Torque	Max. 3 Nm
Colour	Black
Historic Brand	Amphenol Procom
Height	Approx. 260 mm / 10.24 in.
Weight	Approx. 0.2 kg / 0.44 lb.
Mounting	From outside : 21 mm dia. hole From inside : 14 mm dia. hole
Mounting Plate Thickness	0.6 → 5 mm / 0.02 → 0.20 in.

Model	Product No.	Frequency	Additional Information
MU 909-XP4/l	130001227	820…890 MHz	Oblong mount with 4 m cable + FME-connector
MU 909-XP4/h	130001222	870…940 MHz	Same mount as above
MU 909-CXP4/l	130001228	820…890 MHz	Circular mount with 4 m cable + FME-connector
MU 909-CXP4/h	130001223	870…940 MHz	Same mount as above

Note

Please note that the MU 909-XP4 type “l”- and “h”-mounts contain matching transformers. Consequently, these special mounts cannot operate with other whip types.

Ordering Designations

Model	Frequency/ CELLULAR System	Mount
Ready-Tuned Models (examples)
MU 909-XP4/h, EGSM	EGSM	Oblong mount with 4 m cable + FME-connector
MU 909-XP4/h, ETACS	ETACS, USA	Same mount as above
MU 909-XP4/h, EAMPS	EAMPS, USA	Same mount as above
MU 909-CXP4/h, EGSM	EGSM	Circular mount with 4 m cable + FME-connector
MU 909-CXP4/h, ETACS	ETACS, USA	Same mount as above
MU 909-CXP4/h, EAMPS	EAMPS, USA	Same mount as above

The MU 909-XP4/… is delivered in two field tunable models but may also be delivered readytuned for CELLULAR systems. When ordering a ready-tuned model, the name of the desired CELLULAR system must be added to the antenna model number.

Installation

This antenna is especially designed for installation on non-conducting surfaces as e.g. glassfiber roofs, as can be found on some trucks, busses, transport vans and trains.

The antenna is an end-fed, ½ λ-dipole concept which can be fed in such a way that the antenna does not require a “groundplane” as required by the standard ¼ λ, 5/8 λ or collinear mobile whips. It is useful to note that this antenna type can be used anywhere, where the ground-plane is poor or completely missing, as e.g.: side-mounted on a clamp as a pager antenna on a wall, or mounted at the very edge of a ground-plane without the loss induced by a tilted radiation pattern.

The antenna must be mounted on a horizontal surface. When cleaning the vehicle in car-washing machines, the whip is easily dismounted using a spanner, size 9 mm. The whip is refitted again by screwing it onto the M6 thread stud on the mount and tightening it lightly with the spanner.
A polyethylene-covered, closely spirally wound flat steel-band material causes the whip always to stand erect while at the same time being very flexible.

1. Installation Dimensions

X CX Mount 21 GB

2. Installation Steps

MU 9 XP4 Mount inst step samlet

Do not use sealer on rubber gasket or other places.

3. Tuning

The antenna should always be tuned using an VSWR-indicating device. The cutting diagrams below serve as a guide for this procedure.

Ordering 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.