Procom GPS-C mhu-3-fm - Manual (Page 3)

TUNING INFORMATION
The GPS-C MHU 3/FM cannot be tuned to any pair of frequencies in the two
bands. Further, the antenna must be equipped with a different kind of
adjustment disc depending on the frequency pair in question.
The antenna can be used without adjustment disc, with a small adjustment
disc or with a large adjustment disc. All adjustment disc types are supplied
with the antenna.
Use the diagrams below as follows
1. Draw a horizontal line through the point on the vertical axis which
corresponds to the 2 m-frequency in question.
2. The drawn horizontal line intersects the shaded area over a certain band
of 70 cm-frequencies.
If the 70 cm-frequency to be covered is not included in the shaded area, try
another diagram (another adjustment disc type). If the 70 cm-frequency is
not covered in any of the diagrams, coverage of the frequency pair in
question is not possible using this type of antenna. Please note, however,
that taking into account the inherent bandwidth of the antenna (± 2 MHz in
the 2 m-band and ± 12 MHz in the 70 cm-band) the combination area may
be increased considerably.
For the relevant diagram
3. Read the total length L1 on the left horizontal axis and cut the whip to
this length.
4. Locate the 70 cm-frequency in question on the right horizontal axis and
read the corresponding length L2 from the curves in the shaded area.
WITH NO ADJUSTMENT DISC
WITH THE SMALL ADJUSTMENT DISC
WITH THE LARGE ADJUSTMENT DISC
Use an SWR-meter to fine-tune the settings
PROCOM A/S reserve the right to amend specifications
without prior notice.
19/12/13