Procom MU 909-xp4-... - Manual (Page 2)

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.
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, ⅝ 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.
3. TUNING:
The antenna should always be tuned using an SWR-indicating device. The cutting diagrams below serve
as a guide for this procedure.
PROCOM A/S reserve the right to amend specifications
without prior notice.
15/12/11