DD1494 L3 Radio

0286-EX-PL-2014 Text Documents

Applied Research Associates, Inc

2014-04-02ELS_147654

CLASSIFICATION UNCLASSIFIED PAGE 2
TRANSMITTER EQUIPMENT CHARACTERISTICS
1. NOMENCLATURE, MANUFACTURER’S MODEL NO. 2. MANUFACTURER’S NAME
(U) VNTXL-2A/SC232/DP/F/S (U) L-3 Southern California Microwave

3. TRANSMITTER INSTALLATION 4. TRANSMITTER TYPE
(U) Aircraft (U) FM Video and data

5. TUNING RANGE 6. METHOD OF TUNING
(U) 1710 MHz - 1850 MHz (U) Synthesizer

7. RF CHANNELING CAPABILITY: 8. EMISSION DESIGNATOR
(U) see remarks (U) 18M5F9W (U) (U)

9. FREQUENCY TOLERANCE:
(U) 20 ppm
10. FILTER EMPLOYED

(U) a. YES b. NO

11. SPREAD SPECTRUM 12. EMISSION BANDWIDTH
CALCULATED MEASURED
(U) a. YES b. NO

13. MAXIMUM BIT RATE a. -3 dB (U) 2.4 MHz (U) (U)
(U) 20k bps
b. -20 dB (U) 14.8 MHz (U) (U)
14. MODULATION TECHNIQUES AND CODING c. -40 dB (U) 26.0 MHz (U) (U)
(U) FM analog video with FM data subcarrier
at 7.5 MHz. (See Remarks) d. -60 dB (U) 38.0 MHz (U) (U)
e. OC-BW (U) 14.0 MHz (U) (U)

15. MAXIMUM MODULATION FREQUENCY
7.575 MHz
16. PRE-EMPHASIS 17. DEVIATION RATIO
(U) 1.0
(U) a. YES b. NO
18. PULSE CHARACTERISTICS: N/A
19. POWER a. RATE (U) NA (U) (U)
a. MEAN (U) 2 W (U) (U) b. WIDTH (U) NA (U) (U)
b. PEP (U) (U) (U) c. RISE TIME (U) NA (U) (U)
20. OUTPUT DEVICE d. FALL TIME (U) NA (U) (U)
(U) Soild State Transistor
e. COMP RATIO (U) NA (U) (U)
21. HARMONIC LEVEL
22. SPURIOUS LEVEL a. 2nd (U) -60 dBC
(U) -80 dBC
b. 3rd (U) -80 dBC
23. FCC TYPE ACCEPTANCE NO.
(U) N/A c. OTHER (U) -80 dBC

24. REMARKS (U)

7. “1710 MHz, 10kHz increments, 4 frequencies will be software selected: 1710,1760,1790,and 1839 MHz.”
8. The necessary bandwidth figure with the emission designator was calculated based upon NTIA Annex J (Bn = 2M + 2DK), K=1.0,
M=7.575, D=1.6 MHz (visual) + .075 MHz (data subcarrier)= 1.675 MHz. So Bn = 2(7.575) + 2(1. 675) (1) = 18.5 MHz.
10. Internal 7-pole Chebychev low pass filter between the output device and the antenna connector. Approximately 0.5 dB insertion loss
with 30 dB attenuation at two times the transmit frequency.l
13. The maximum-bit rate shown is for the digital FM data sub-carrier.
14. There will be one FM data subcarrier at 7.5 MHz offset from the carrier frequency. It is wholly separated from the video stream.
15. Maximum modulation frequency value includes the data sub-carrier.

CLASSIFICATION UNCLASSIFIED /

Document Created: 2013-07-21 22:40:02
Document Modified: 2013-07-21 22:40:02

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