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Sunday, 05 September 2004 17:01 |
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Be careful ! in France you are not allowed to transmit in
realtime video from an aircraft !
You need:
- Aurel H2-TV Channel
Audio-Video Modulator
Mod. MAV-VHF224 225 Fr
Description :
Low cost CATV circuit for high quality audio-video
signals, operating in the VHF Band. Input signals can be
fed from videocameras, tuners, video tape players, etc,
directly using the lines of the standardized output
connectors (i.e. SCART), while output R.F. can be
received with any standard not modified TV receiver. The
Modulator is very stable in frequency and features high
harmonic rejection.
| Characteristics |
Min |
Typ |
Max |
Unit |
| VS |
Supply Voltage |
4.75 |
5 |
5.25 |
Vdc |
| IS |
Supply Current |
|
90 |
|
mA |
| PO |
RF Output power |
|
1 |
|
mW |
| IM |
3rd Order Intermodulation |
|
|
60 |
dBm |
| FC |
Carrier Frequency |
223.75 |
224.5 |
225.25 |
MHz |
| IM |
Video Input Modulation |
|
1.2 |
|
Vpp |
| FSC |
Sub-Carrier Frequency |
|
5.5 |
|
MHz |
| MA |
Audio FM Modulation |
|
1 |
|
Vpp |
| II |
Input Impedance |
|
100 |
|
KW |
| TPE |
Pre-enphasis |
|
50 |
|
S |
| TOP |
Operating temperature
range |
-20 |
|
+80 |
°C |
|
| Pin-Out |
| 1 |
Ground |
| 2 |
Audio
Input |
| 3 |
Ground |
| 4 |
Video
Input |
| 5 |
Ground |
| 6 |
+5V |
| 7 |
Ground |
| 8 |
RF Output |
|
 |
- Aurel H2 Channel CATV
Amplifier
Mod. M.C.A. 224
130 Fr
Description :
Linear CATV circuit for high quality audio-video signal
amplification, operating on the VHF H2 Channel. RF input
signal can be derived from a Audio Video Modulator (best
operation is with our mod. MAV-VHF 224). Output can be
received with any standard not modified TV receiver.
| Characteristics |
Min |
Typ |
Max |
Unit |
| VS |
Supply
Voltage |
11.4 |
12 |
12.6 |
Vdc |
| IS |
Supply
Current |
|
100 |
|
mA |
| FW |
Working
Frequency |
|
224 |
|
MHz |
| PO |
RF
Output power (2 mW IN) |
|
+19 |
|
dBm |
| DI |
Intermodulation
distorsion |
|
50 |
60 |
dB |
| TOP |
Operating
temperature range |
-20 |
|
+80 |
°C |
|
|
| Pin-Out |
| 1 |
+12v |
| 2 |
Enable |
| 3 |
Ground |
| 6 |
RF
Input |
| 7 |
Ground |
| 10 |
Ground |
| 13 |
Ground |
| 15 |
RF
Output |
|
|
 |
- Mini color video cam
890 Fr
| Characteristics |
| Video system |
PAL |
| Effective pixel |
628*582 |
| Synchro |
internal |
| Resolution (TV
lines) |
380 |
| S/N Ration |
> 42 dB |
| Mill Illumination |
3 lux at F1.2 |
| Electronic shutter |
1/50 - 1/150 000 |
| Video output |
1V , 75 Ohms |
| Lens |
3.6 mm - 5 mm (F 2
-> 4.5) |
| Lens Angle |
92° -> 65° |
| Power current |
50 mA |
| Power Source |
DC12V |
|
|
|
| Pin-Out |
| Red |
+12v |
| Yellow |
signal |
| Black |
Ground |
|
|
|
 |
- a good and safety box (in case of crash) 18 Fr
- Accus (2 * 9V), a free rx channel.
296 Fr
- 2 voltage regulator : 7812 (12V)
and 7805 (5V) + 2 * 100 nF 27
Fr
- A small TV (LCD) ex 11cm TFT 1000
Fr
Conclusions :
The result is very bad with no specific antenna, maybe I
should replace my 32 cm wire with something better. Distance are
bad too and some polarized effect appear when you turned the
device : Really BAD !
Â
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