Kirisun DP485 User Manual

DP485 Service Manual
28
b. RF signal is set to -123dBm, modulated frequency deviation to 3.0kHz/1.5kHz (wide/narrow ban). Under
computer mode (SQL off, narrow/wide band) (five frequencies), click Ok when the value is stable.
7.2.Radio Test
(1) Voltage used in test: 7.5V +/-0.1V room temperature
(2) Frequency range: 136~ 174MHz,400 ~470MHz
The specifications should be tested in the test mode:
Rx Section
1. Sensitivity: <=-119dBm (0.25uV) (wide band, narrow band) 12dB SINAD
2. Distortion: <=5%
3. Current: static current :<=100mA
Received working current: <=400mA
4. Squelch off Sensitivity: when RF input ≤-124dBm, squelch off.
5. Squelch on Sensitivity: when RF input ≥-119dBm, squelch on.
Tx Section
1. Output Power: high (3.8W---4.8W) low (0.7W---1.3W)
2. Tx Current: high power Tx<= 1.6A; low power Tx <=1.0A
3. Tx Distortion: <=5%
4. Tx Frequency Deviation: reference frequency +/-500Hz
5. Undervoltage Indication: when voltage is 6.2V, the red indicator should flash when pressing PTT, and no
Tx power occurs.

Kirisun DP485 Specifications

General

Frequency	136~174 MHz, 400~470 MHz
Channel Capacity	256 channels
Channel Spacing	25 kHz/12.5kHz
Antenna Impedance	50Ω
Operating Voltage	7.4V
Rated Power	1W 16Ω
Transmitting Power	4W/1W@7.4V DC
Current Consumption	≤1.5A@ 7.4V DC
Working Temperature	-25℃~ +55℃
Microphone Impedance	2.2kΩ
Battery	Lithium-ion battery DC 7.4V , 2000mAh
Receiving Sensitivity (12dB SINAD )	-120dBm
Squelch Sensitivity (3-level)	≤-120dBm
Selectivity of Adjacent Channels	70dB@25KHz /60dB@12.5KHz
Intermodulation Immunity	65dB@25KHz/12.5 KHz
Blocking	84dB
Frequency Stability	≤±2.5ppm
Maximum Modulation Offset	±5kHz@25KHz /±2.5kHz@12.5KHz
Modulation Distortion	≤3%
Spurious Emission	≤-36dBm