Description:
The VR75 Series receivers are ideal for law enforcement, surveillance, military and other applications requiring high quality video reception in a compact, rugged package.
Features:
- Rugged, reliable, efficient
- Ideal for covert operations
- Low current draw for longer battery life
- Low noise figure for longer range
- Full frequency band channelized
- Video inversion
Tech:
- Dimensions: 2.5 x 3.5 x 0.85 inches
- Weight: 6 ounces
RF Characteristics
- Frequency range (specify):
-- UHF: 340 — 399.9MHz (steps - 100kHz)
-- Lower L-Band: 1435 - 1535MHz (steps — 1MHz BCD, 250kHz other)
-- Upper L-Band: 1700 — 1850MHz (steps — 1MHz BCD, 250kHz other)
-- S-Band: 2200 — 2399MHz (steps — 1MHz BCD, 250kHz other)
-- ISM S-Band: 2400 — 2499.75MHz (steps — 250kHz)
-- Dual L/S-Band: 1700 - 1850/2200 - 2500MHz (steps -- 1MHz BCD, 250kHz other)
-- C-Band: 4400 — 4999MHz (steps — 1MHz BCD, 250kHz other)
-- Public Safety C-Band: 4940 - 4990MHz (steps — 1MHz BCD, 250kHz other)
- Frequency selection (specify): fixed or channelized (full-band — BCD rotary switches, RS232 remote control, or programmable binary switch)
- Maximum RF input: +10dBm without damage
- Input impedance: 50 ohms nominal, VSWR 1.5:1 maximum
- Noise figure:
-- UHF, Dual L/S: 4.5dB typical
-- L/S/C-Band: 4.0dB typical
-- ISM S-Band: 2.5dB typical
- Image rejection: UHF/L/S/Dual: 60dB min; C-Band: 50dB min
- Signal strength output: 0.3VDC @ -90dBm to 5.0VDC @ -20dBm, monotonic
LO / IF Characteristics
- LO stability: ±4 ppm over -20ºC to +60ºC
- IF frequency: UHF: 140MHz; L/S/C-Band, Dual: 480MHz
- IF bandwidth: UHF: 18MHz; L/S/C-Band, Dual: 20MHz
- Harmonic and spurious level: -50dB maximum
Video Characteristics
- Modulation type: analog FM
- Modulation sense: standard (positive) or inverted (negative)
- Frequency response (specify): 10Hz to 3.5MHz (monochrome), 4.2MHz (NTSC), or 5.0MHz (PAL), ±1.5dB
- De-emphasis: 525-line (NTSC)
- Output level: 1V pk-pk / ±4MHz @ crossover frequency, into 75 ohm load
- Output impedance: 75 ohm nominal, unbalanced
Audio / Data Subcarrier Characteristics
- Subcarriers (specify): none, one, or two
- Subcarrier type (specify): audio or data
- Subcarrier frequency (specify): 4.83, 5.8, 6.0, 6.2, 6.5, 6.8, 7.2, 7.5, 8.3, 8.5, or 8.59MHz or custom
- Subcarrier separation (two): 1MHz minimum
- Modulation type: analog FM, positive sense
- Frequency response: 100Hz to 10kHz ±1.5dB (audio) or 100bps to 48kbps (data)
- De-emphasis: 75 µsec NTSC
- Output level: -10dBV line / 100kHz pk-pk @ 1kHz rate into 600 ohm load (audio) or RS232 / 150kHz pk-pk deviation (data)
- Output impedance: 600 ohm nominal, unbalanced (audio) or 300 ohm (data)
Power Requirements
- Input voltage: +9 to +16VDC, reverse polarity protected
- Current draw: 275mA maximum
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