35
D
接收
• Receive system: Double Conversion Superheterodyne
• Intermediate frequencies:
A band 1st IF 58.05 MHz, 2nd IF 450 kHz
B band 1st IF 57.15 MHz, 2nd IF 450 kHz
• Sensitivity:
Ham band FM/FM-N Less than 0.18 μV (at 12 dB SINAD)
DV Less than 0.2 μV (at 1% BER)
Outside Ham band
Band
Frequency range
(MHz)
FM/FM-N/WFM*
1
(12 dB SINAD)
AM/AM-N*
2
(10dB S/N)
BC band 76.000 ~ 108.000 Less than 1 μV –
A band
108.000 ~ 136.991 – Less than 1 μV
137.000 ~ 142.000 Less than 0.18 μV Less than 1 μV
142.005 ~ 148.000 Less than 0.18 μV –
148.005 ~ 174.000 Less than 0.32 μV –
225.000 ~ 259.995 Less than 0.56 μV Less than 1.8 μV
260.000 ~ 354.995 Less than 0.32 μV Less than 1 μV
355.000 ~ 374.995 Less than 0.5 μV Less than 1.8 μV
375.000 ~ 399.995 Less than 0.5 μV –
400.000 ~ 479.000 Less than 0.32 μV –
B band
137.000 ~ 148.000 Less than 0.18 μV –
148.005 ~ 174.000 Less than 0.32 μV –
375.000 ~ 399.995 Less than 0.5 μV –
400.000 ~ 479.000 Less than 0.32 μV –
*
1
“WFM” is for only BC band. “FM” and “FM-N” is for only A/B band.
*
2
“AM-N” is for only 108.000 MHz ~ 143.995 MHz.
9 规格
D 发射
• Modulation system:
FM/FM-N Variable reactance frequency modulation
DV GMSK reactance frequency modulation
• Output power (at 7.4 V DC):
High: 5.0 W, Mid: 2.5 W, Low2: 1.0 W, Low1: 0.5 W, S-Low: 0.1 W
• SAR 10g: 5.49 W/kg
• Maximum frequency deviation:
FM ±5.0 kHz
FM-N ±2.5 kHz
• Spurious emissions: Less than –60 dBc at High/Mid
Less than –13 dBm at Low2/Low1/S-Low
• Microphone impedance: 2.2 kΩ
• Audio output power:
Internal speaker
More than 0.75 W at 10% distortion into an 8 Ω load
External speaker More than 0.2 W at 10% distortion into an 8 Ω load
• Selectivity:
FM More than 55 dB
FM-N/DV More than 50 dB
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