Quick Details
Place of Origin: |
Guangdong, China (Mainland)
|
Brand Name: |
HYT
|
Model Number: |
790EX
|
Type: |
Handheld
|
Dimensions: |
125*55*37mm
|
Frequency Range: |
VHF: 136-174MHz UHF1 400-470MHz UHF3: 350-400MHz
|
Storage Channel: |
1024
|
Talk Range: |
5-8KM
|
color: |
black
|
Packaging & Delivery
Packaging Details: |
50*60*50 box/one cantor packaging |
Delivery Detail: |
5-10days |
interphone HYT PD790Ex Cheap High Quality Professional Walkie talkie 50km
Basic information
Frequency range VHF : 136-174MHz
UHF1: 400-470MHz;
UHF3: 350-400MHz
Channel number 1024
Group number 64 ( each with up to 16 channel )
Channel spacing of 25 / 20 / 12.5 KHz
Working voltage rated 7.4V
Battery 2000mAh ( Li-Ion )
Average battery working time
( 5-5-90 work cycle, high power transmitter )
2000mAh high capacity lithium battery simulation: more than 10.5 hours
Digital: more than 14 hours
Frequency stability + 1.5ppm
Antenna impedance 50 ohm
Size ( high X width X depth )
( with a standard battery, without antenna ) 125 X 55 X 37mm
Weight ( with a standard battery and antenna ) 355g
Shell material PC
LCD display 160 x 128 pixels, 65535 color
1.8 Inch, 4 lines
Transmission part
Output power of high power: 5W VHF
Low power: 1W VHF
High power UHF1 / UHF3: 4W
UHF1 / UHF3 low power: 1W
FM modulation 11K than F3E @ 12.5 kHz
14K than F3E @ 20 kHz
16K than F3E @ 25 kHz
4FSK digital modulation mode 12.5kHz data only: 7K6 than FXD
The 12.5kHz data and voice: 7K6 than FXW
Transmitter spurious - 36dBm < 1GHz
- 30dBm > 1GHz
Modulation limiting + 2.5kHz @ 12.5 kHz
+ 4.0kHz @ 20 kHz
+ 5.0kHz @ 25 kHz
FM 40dB @ 12.5 kHz noise
43dB @ 20KHz
45dB @ 25 kHz
Adjacent channel power 60dB @ 12.5 kHz
70dB @ 20 / 25 kHz
Audio response + 1 ~ - 3dB
Audio distortion is less than or equal to 3%
Digital speech coder AMBE + + or SELP
Receiving part
Sensitivity
Simulation of 0.3 V ( 12dB SINAD )
0.22 u V ( typical value ) ( 12dB SINAD )
0.4 ~ V ( 20dB SINAD )
Figure 0.3 u V / BER5%
Adjacent channel selectivity
TIA-603
ETSI
60dB @ 12.5 kHz / 70dB @ 20 / 25 kHz
60dB @ 12.5 kHz / 70dB @ 20 / 25 kHz
Intermodulation
TIA-603
ETSI
70dB @ 12.5 / 20 / 25 kHz
65dB @ 12.5 / 20 / 25 kHz
Spurious response inhibition
TIA-603
ETSI
70dB @ 12.5 / 20 / 25 kHz
70dB @ 12.5 / 20 / 25 kHz
The signal to noise ratio 40dB @ 12.5 kHz
43dB @ 20KHz
45dB @ 25 kHz
Rated audio-frequency output power 0.5W
Rated audio distortion is less than or equal to 3%
Audio response + 1 ~ - 3dB
Conduction and radiation < - 57 dBm
Environmental index
Operating temperature range - 30 degrees to + 60 degrees C.
Storage temperature range of - 40 degrees to + 85 degrees C.
ESD ( electrostatic protection grade ) IEC 61000-4-2 ( Level 4 )
+ 8kV ( contact discharge )
+ 15kV ( air discharge )
American military standard MIL-STD-810 C / D / E / F
Waterproof and dustproof IP57 standard
Moisture proof according to the MIL-STD-810 C / D / E / F standard
Shock and vibration according to the MIL-STD-810 C / D / E / F standard
GPS ( PD780G only )
TTFF ( time to first fix ) cold start < 1
TTFF ( time to first fix ) hot start < 10 seconds
Horizontal position accuracy of < 10 m
Brief Introduction
Guangzhou Etmy Co., Ltd., founded in 2008, is a manufacturer specialized in the research, development and production of walkie-talkies. We are located in Guangzhou, with convenient transportation access. All of our products comply with international quality standards and are greatly appreciated in a variety of different markets throughout the world.