Specifications - Lectronics VR Field Reference Manual

VR Field Receiver

Specifications

Note: Some specifications apply only when the receiver is operating in the 400 Series (Digital Hybrid) mode.
Operating Frequencies (MHz) for Receiver Modules:
Digital latency:
Frequency selection:
Dual Block Range:
Pilot tone:
Deviation:
Receiver Type:
Frequency Stability:
Front End Bandwidth:
VRF (VR Field Master):
VRS (Standard Module):
VRT (Tracking Module):
Sensitivity (20 dB Sinad):
AM Rejection:
Image & Spurious Rejection:
Diversity Methods:
FM Detector:
Audio Performance (overall system):
Frequency Response:
THD:
SNR at receiver output (dB)
(in Hybrid operating mode):
(Note: the dual envelope "soft" limiter provides
exceptionally good handling of transients using
variable attack and release time constants.
The gradual onset of limiting in the design begins below full modulation, which reduces the measured figure for SNR without limiting by 4.5 dB).
Input Dynamic Range:
Audio Output Level:
LCD:
Power Requirements:
Weight (not including battery):
Dimensions:
0
Block 21 537.600 - 563.100
Block 22 563.200 - 588.700
Block 23 588.800 - 607.900 and 614.100 - 614.300
Block 24 614.400 - 639.900
Block 25 640.000 - 665.500
Block 26 665.600 - 691.100
Block 27 691.200 - 716.700
Block 28 716.800 - 742.300
Block 29 742.400 - 767.900
3.0 mS (whole system, Digital Hybrid transmitter)
3.0 mS (whole system, analog transmitter*)
1.5 mS (receiver only, Digital Hybrid mode)
3.0 mS (receiver only, analog compatibility mode*)
*delay is added to analog channels to align them with digital channels
256 frequencies in 100 kHz steps
Built in antenna mulitcoupler covers a two block range.
Block 21/22 537.600 - 588.700
Block 22/23 563.200 - 614.300 (excluding 608.000 to 614.000)
Block 23/24 588.800 - 639.900 (excluding 608.000 to 614.000)
Block 24/25 614.400 - 665.500
Block 25/26 640.000 - 691.100
Block 26/27 665.600 - 716.700
Block 27/28 691.200 - 742.300
Block 28/29 716.800 - 767.900
25 to 32 kHz; 5kHz deviation; unique pilot tone frequency for each selected carrier frequency, (Digital Hybrid mode)
± 75 kHz (max), (Hybrid mode)
Triple conversion, superheterodyne
±0.001 %
50 MHz @ -3 dB
30 MHz @ -3 dB
11 MHz @ -3 dB
0.9 uV
>60 dB, 2 uV to 1 Volt
85 dB
Switched, ratio and frequency
Digital pulse counting detector @ 300 kHz
32 Hz to 20 kHz (+/-1dB), overall system (using a UM400 transmitter in Digital Hybrid mode)
0.2% (typical), (Digital Hybrid (400 Series) mode)
SmartNR No Limiting w/Limiting
OFF 103.5 108.5
NORMAL 107.0 111.5
108.5
FULL 113.0
125 dB (with full transmitter limiting)
-15 dBu to +8 dBu, in 1 dB increments
122x32 graphical display
10 to 18 VDC; 17.2 W max. (1.72 A @ 10 VDC to 1.05 A @ 18 VDC)
VR Field with 6 VRS modules & clips: 5.77 lbs. (2619 g)
VR Field with 6 VRT modules & clips: 5.86 lbs. (2660 g)
11.88"W x 3.5"H x8.25"D* (30.18 cm x 8.89 cm x 19.67 cm)
*(Depth measured from cover to end of BNC jacks, add 1.5" for rear handle)
LECTROSONICS, INC.