Maiden Rock Communications LLC MRC565-47-50 ユーザーズマニュアル
DESCRIPTION
Page 25
MRC-565 Packet Data Radio Operations and Maintenance
40-43 MHZ
43-46 MHZ
46-50 MHZ
43-46 MHZ
46-50 MHZ
+/-.0005% Synthesized 10KHz steps
Modulation:
Type
Rate
Format
BPSK
4 kbps
NRZ
4 kbps
NRZ
Noise Figure
< 7 dB minimum
Sensitivity:
Bit Error Rate < 10
-3
at 4 kbps
-120 dBm
IF Bandwidth (3/80 dB)
13/40 KHz typical
RF Bandwidth (3 dB)
13 MHz typical
Signal Acquisition Time
< 5 msec
3
rd
Order Intercept Point
>- 15 dBm
Image Response Attenuation
> 70 dB minimum
Spurious Response Attenuation
> 70 dB minimum
SP Threshold
Adjustable from –130 to –100 dBm
Noise Blanker
> 20 dB Reduction in Impulse Noise
I/O
MRC Standard (Refer to Section 3.2)
Table 3. MRC-565 Transmitter Specifications
CHARACTERISTIC
SPECIFICATION
Frequency (Three Models)
40-43 MHZ
43-46 MHZ
46-50 MHZ
43-46 MHZ
46-50 MHZ
+/- .0005% Synthesized 5KHz steps
RF Power Output
> 100 Watts at 12-16 V
DC
Input
Load VSWR
< 3:1 Rated Power (shut down if >3:1)
Harmonic Levels
70 dB below Unmodulated Carrier
Modulation:
Type
Rate
Format
BPSK
4 kbps
Diff
4 kbps
Diff
Spurious
> 70 dB below Unmodulated Carrier
Transmit Modulation Spectrum
10 KHz offset – 25 dBC
50 KHz offset – 63 dBC
50 KHz offset – 63 dBC
Tx Duty Cycle
10 % Max without shutting down transmitter
T/R Switch
Solid-State
Switching Time < 100 microseconds
Switching Time < 100 microseconds
I/O
MRC Standard (Refer to Section 3.2)
High VSWR Protection
Withstands Infinite VSWR
Table 4. MRC-565 Microprocessor Specifications
CHARACTERISTIC
SPECIFICATION
Main Processor
Motorola MC68332FC 32-bit Embedded Controller