External Gsm Antenna; External Rf Antenna (Not Included); Storage Precautions - Javad HPT404BT Operator's Manual

Introduction
Getting Acquainted
• HPT404BT with GSM Operator's Manual
• Functional specifications

1.7. External GSM Antenna

GSM/GPRS Antenna 850/900/1800/1900MHZ, SMA (p/n 30-587314-01):

1.8. External RF Antenna (not included)

Antenna type depends on the site requirements, and may be directional or omni-directional.
Warning: Do not use HPT404BT with GSM without antenna to avoid serious damage of your device.

1.9. Storage Precautions

1. Always clean the instrument after use. Wipe off dust with a cleaning brush, then wipe off dirt with
a soft cloth.
2. Store in a location with a temperature of -40°... +85°C, and no exposure to direct sunlight.
3. Use a clean cloth, moistened with a neutral detergent or water, to clean the modem. Never use an
abrasive cleaner, ether, thinner benzene, or other solvents.
Always make sure the instrument is completely dry before storing. Dry the modem with a soft, clean
cloth.
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Figure 6. GSM Antenna
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