DTX-99U Radio Transmitter
The DTX-99U Radio Transmitter integrates a high-power RF section and an internal
Output&Reverse RF Power measurment circutry, allowing for on-site optimal antenna matching.
The on-board microprocessor is used to set the transmission frequency and to measure transmission parameters.
This very small (100x55x26 mm.) and high-power unit is ideal for externally modulated Alarm/Telemetry data transmisiion.
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Main Features
- UHF (400-500 Mhz) Alarm/Telemetry Narrow-Band FM.
- Output Power: 8 Watt.
- Inputs: Audio-In 300-2500 Hz, PTT.
- Programmable Frequencies.
- Measurement of Output Power & Supply votage during tranmission.
- Measurement & LED Display of VSWR allows on-site antenna matching and transmission monitoring.
- Digital Alarm output for High VSWR, Low Output Power, Low Input Votage, No Frequency Locking etc...
- Enables reporting Transmission problems on other available communication channels (e.g. Tel. Dialer).
- Meets ETS 300-086 standard specifications.
- Small size, low cost.
DTX-99U RF specifications
Item
Specification
Conditions
Frequency Range
400..500 Mhz
L, M, H
Transmission Power
8 Watt
@13.8 Vdc
Type of Modulation
FE3 (Narrow-band FM)
Frequecy Stability
+/- 1.5 Khz max.
-10°C to +55°C
Channel Spacing
12.5 Khz
25 Khz on demand
Max. Freq. deviatpion
+/- 2.5 Khz (5 Khz for 25 Khz spacing)
for 100% modulation @ 1 Khz.
Spurious&Harmonics
below -36 dbm
below -30 dbm
< 1 Ghz
> 1 Ghz
Audio Input Impedace
50 Kohm
1 Vp-p for max. deviation.Internally limmited.
Typical Current Cunsumption
6 milli-amp
1.8 Amp
Idle
Transmitting
Max. duty-cycle
10%
Avarage in 5 min.
Phisical
100x55x26 mm.; 150 gr.
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