Mobile Ham Car Radio Amateur Radio Vehicle Transceiver Quad-Standby Quad Band UHF VHF Radio 25W Walkie Talkie 10 KM Color Screen

SOCOTRAN ST-7900D Quad Band Quad-Standby 144/220/350/440MHz Four bands 200CH mini Color Screen Mobile Car Radio 25W Mobile Transceiver

Description:

1.MINI COLOR SCREEN AND EASY PROGRAMMING: Many color options for display are nice and can customize for your eyes; easy to program manually or by software with UHF VHF. Support CHIRP. The software is a 32 bit program, if your computer is a 64 bit system, or if you get the error message when you install the software, there are drive conflicts. Please contact us to get a driver patch link, the programming software issue will be solved.

2.LOUD CLEAR VOICE WITH MIC AUDIO GAIN: Internal speaker sounds nice and Tx/Rx reports indicate full quieting; external speaker with mic audio gain adds better transmitting. When the mobile radio gets warm from transmitting or when you get long-winded in a conversation it will get warm to the touch and the built-in cooling fan will come on

3.WITHOUT TOUCHING TO LISTEN ALL CHANNELS: Having four channels shown on the main display and being able to auto monitor or scan all four, so you can listen to all of them without touching the radio. This ham radio transceiver also has three different display name(frequency name, channel name, edit name)

4.CLEAR RECEPTION AND GOOD TRANSMISSIONS: While transmitting, you can choose to display power output or microphone audio output to help to adjust the mic gain to keep it in the middle of the range. High/low power for your different needs. This mobile ham radio transceivers makes Cross band like received in VHF and transmits in UHF

5.BUYER BEWARE: 1 year Warranted. If you find ANY questions or concerns with this mobile radio, please feel free to contact us and we will RESPONSE in 24 hours and HELP ASAP

1. Power Output VHF 25W UHF 20W

2. High / Low Power Settings

3. Power Supply with Voltage 13.8V

4. Quad Band, Quad-Standby

5. Mini Color Screen & Multiple Display Name

6. 200 Channels Memory

7. Memory FM Radio Channel

8. Keypad Lock-out

9. Remote Stun, Remote Kill, Remote Revive

10. External Speaker/PTT

11.. 5 Tone; 2 Tone; ANT; DTMF

12. Support Manual, Chirp and PC Programming

NOTICE:

Radio in transmit status may be burn without antenna connecting.

Specifications:

Item Photo:

Good partner not only during hunting, road trip or adventure but aslso work in group like security and transportation

If you like hunting or road trip or adventure the Socotran mobile radio is a good helper; if you work in group like security and transportation the Socotran mobile radio is also a good helper because of its loud clean voice, clear reception, good transmitting and easy freely use.This mobile ham radio transceivers makes Cross band like received in VHF and transmits in UHF and is compatible with other handheld teo-way radios.

Package Contain:

1× SOCOTRAN ST-7900D Quad Band Mini Mobile Radio

1× Microphone

1× Car Power Cable

1× Clip for Speaker Microphone

1× Mounting Bracket

1× Screw Sets

1 × User Manual

SOCOTRAN ST-7900D provides quad-standby quad band, dual display, dual time slot, operating on four band UHF 400~480, MHz(350~390 MHz), VHF 136~174, MHz(220~260 MHz) frequencies,it support cross band, at up to 25 watts VHF and 20 watts UHF.It’s designed for long-distance two-way communication. 57 selectable functional menus in the mobile ham radio transceiver with speaker microphone easy operations meet your various demands. SOCOTRAN ST-7900D ham radio transceiver is equipped with high/low power mode, 200 Channels Memory, Monitor Mode, Quad-Standby, Programmable Squelch, High-Grade hand microphone, multi-colored LCD backlit display for daylight or night use, and different display name(frequency, channel name and edit name). Maximize the range with a detachable external magnetic mount mobile antenna and mount. Please note that the antenna, and antenna mount, programming cable and software disk are sold separately.

ATTENTION!

1.Please observe the following precautions to prevent fire,personal injury,damage to the radio:

2.This radio is designed to use 13.8V dc voltage, do not use the 24 V power supply to the mobile radio.

3.Please do not place the machine in the dust,moisture or water splashing.

4.If there’s any electromagnetic interference,please keep the mobile radio away from the sources such as TV set,engine generator etc.

5.Do not expose the mobile radio to long periods of direct sunlight,for example on the dashboard of a vehicle or close to heating appliances.

6.If the mobile radio generate any smoke or strange smell,please turn off the power supply immediately and make sure all is safe,the you can send the unit to the nearest after-sale center for inspection or repairment

7.Do not keep transmitting with high power output for too long time,which may lead to overheating and cause auto power off or failure

There are several factors that affect the distance and effect of the walkie-talkie

1. system parameters:

1) The stronger the transmitter output power, the larger the coverage of the transmitted signal.

2) The higher the receiving sensitivity of the communication machine, the farther the communication distance is.

3) The gain of the antenna, when the antenna is matched with the machine, the antenna height is generally increased, and the receiving or transmitting capability is enhanced.

2. environmental factors:

Environmental factors mainly include paths, tree density, environmental electromagnetic interference, buildings, weather conditions, and terrain differences. These and other parameters directly affect the field strength and coverage of the signal.

3. Other influencing factors:

1) The battery is low. When the battery is low, the call quality will deteriorate. In severe cases, there will be noise, affecting normal calls.

2) Antenna matching

3) The quality of the sound depends mainly on the pre-emphasis and de-emphasis circuits.

4) factors affecting the intercom distance calls and also with the effect of the seasons, summer is better than winter.