TN213 Rev 8-0-0 May 14
TN213 VR-3A130-SYF VHF AM Enhanced Receiver
MT-3 Radio Systems
TECHNICAL NOTES
Page 1 of 2
© 2014 Codan Limited All rights reserved.
43 Erie Street
Victoria, B.C.
Canada V8V 1P8
Toll Free Canada & U.S.A.
Phone: 1-800-664-4066
Fax: 1-877-750-0004
International
Phone: 250-382-8268
Fax: 250-382-6139
Internet
Email: [email protected]
Web: www.codanradio.com
The VR-3A130 Receiver is a multichannel synthesized low power AM receiver capable of
operating for regular AM voice radios in 8.333 and 25 KHz channel spacings. The VR-3A130-S
receiver operates in the 118 to 137 MHz aviation band. A modular design allows each of the
receiver’s two internal modules, the Main Receiver Board, and OSR-3A130 Synthesizer, to be
individually assembled and tested. This facilitates construction, tuning and maintenance as
well as troubleshooting procedures. The synthesizer module can be programmed to have up
to 16 channels in the 118 to 137 MHz frequency band. Channel 16 can be programmed from
the front panel frequency select handle.
SQ . DI SA B L E
N
O
RM
O
FF
RF N
I
REFERENCE
INPUT
RECEIVER
1 2 8.0 0 0 0
*
FREQUENCY (MHz)
MADE IN CANADA
MODEL # CODE
Specifi cations
Frequency Band
118 - 137 MHz
Channel Spacing
8.333 & 25 KHz
Frequency Switching Range
Full Band
Sensitivity (for 6 dB S/N)
≤
-110 dBm
Sensitivity (for 10 dB SINAD)
≤
-107 dBm @ 128 MHz, +25°C
Selectivity (6 dB Nose Bandwidth)
≥
2.77 KHz (±)
Selectivity (60 dB Skirt Bandwidth)
≤
7.37 KHz (±)
Spurious Responses
≥
100 dB
Intermodulation Response Rejection
≥
110 dB
Noise Level
≤
-40 dB
L.O. Frequency Stability
± 5.0 ppm (-30°C to +60°C) (-40°C to +60°C optional)
Distortion (THD) (-40°C to +60°C)
≤
10% @ 85% modulation
AGC Squelched Audio Attack Time
< 60 ms
Audio Squelch Sensitivity
≥
8 dB SINAD close point /
≤
20 dB SINAD open point
Squelch Hysteresis
0 to 8 dB
Operating Temperature
-30°C to +60°C (-40°C to +60°C optional)
Operating Current (Squelched)
≤
117 mA
Speci
fi
cations tested using RTCA DO-186B and ETSI EN300 676 Section 8.8
Models Available
VR-3A130-SYF210
Enhanced Synthesized, AM, 118 - 137 MHz, with FP frequency select handle
Receiver Operating Frequency
The receiver is initially aligned at the factory for the center of the 118 to 137 MHz frequency range. No re-alignment
of the receiver is required to change frequencies. The receiver operating frequency can be set as follows:
Channel 1 is programmed by the four BCD switches located on the Receiver Mainboard.
Channels 2 through 15 are programmed in the synthesizers’ internal memory (done at the factory, or by a synthesizer
channel programmer).
Channel 16 is programmed by the front panel frequency select handle (exclusive to the AM product).
This product has been discontinued and is no longer manufactured by Codan Radio Communications
