Dittel FSG 2T PS, Руководство оператора

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FSG 2T PS
Portable VHF/AM Airband Transceiver
36
DITTEL – D10077 May 2010
4.16 Siting
The portable radio
FSG 2T PS
operates in the VHF frequency band,
this is a Line-Of-Sight (LOS) frequency; therefore, siting of the radio
greatly affects its operating range. The longest range is normally
obtained when a direct LOS is maintained between the radios. Use of
hilltop, roof or tower locations will increase the LOS range. Location in
valleys with intervening hills, behind vehicles or buildings or in dense
woods may reduce or prevent communications. If possible, avoid
antenna locations near electrical interference sources, such as
computers, power and telephone lines, radar, welders and electrical
generators.
4.17 Base Operation
To operate the radio as a base station, a weather-proof anti static and
lightning protected folded-top antenna is ideally suited. The antenna
should be mounted vertically and elevated as high as possible on a
roof, horizontally free of obstacles. The antenna mast has to be
grounded and anchored, as necessary. For a distance of up to 15
meters the antenna cable may be a RG-58 C/U type, for longer
distances always use the cable type RG-213/U (low loss).
In general, the antenna cable should not be longer than necessary.
4.18 Troubleshooting
If the portable transceiver
FSG 2T PS
does not operate correctly,
check the following:
Is the required frequency visible? Adjust required frequency or
channel number!
Is battery supply sufficient? Observe supply indicator particularly
during transmit, at least 11 Vdc must be shown!
Weak RX signal? Adjust
SQ
control counter-clockwise!
Weak TX signal? Check microphone, MIC setting, radio, or
antenna system! Lights
TX/RX
LED RED while speaking? The voice
volume is too low, check MIC setting. Speak loud and clear while
the lips are facing the microphone! The
TX/RX
LED must flicker
YELLOW!
Singing during transmit? Adjust sidetone more quietly; keep
microphone in other position!
Rattles when transmitting? Metal propellers between antenna and
ground station!
Tower hears carrier, but no voice? Check
TX/RX
LED (red or