Wednesday, November 21, 2018

SAMCOM DUAL BAND RADIO UV-6R HAM RADIO

SAMCOM DUAL BAND RADIO UV-6R HAM RADIO



Main features

      VHF and UHF bands and channel name displayed
      Operating modes: UHF/VHF, UHF/UHF, VHF/VHF
      Output power: 5W UHF/VHF
      Up to 128 memory channels
      50 CTCSS tones and 208 DCS codes
      1750Hz tone for repeaters
      SOS Emergency function
      LCD display with backlight adjustable in 3 colors
      FM radio receiver (87.5-108MHz)
      VOX, Scan, Dual Watch functions
      Channel spacing: 25KHz/12.5KHz
      Channel or frequency mode selection
      TOT (Time out timer)
      DTMF function
      Reverse function
      Alarm function
      CTCSS and DCS codes research
      Setting and storing of channel names
      PTT-ID
      Busy Channel Lockout function (BCLO)
      High/low power selection
      Frequency step: 2.5/5/6.25/10/12.5/25KHz
      Frequency offset (adjustable): 0-69.990MHz
      Repeater shift
      Squelch adjustable in 9 levels
      VOICE: vocal indication of the function selected
      Keypad lock
      Power Save
      Li-Ion 1800mAh battery pack
      2pin Kenwood accessory jack

K-Connector can be Convenient compatible K-interface

Content of the packaging

      1 AP-6UV transceiver with belt clip
      1 Li-Ion battery pack 1500mAh 7.4V
      1 fast desktop charger
      1 wall adaptor
      Antenna



Sam Radios Ltd.
Tel: +86-595-86713710 | Fax: +86-595-86713712
Web: www.samradios.com | Email: wiki@samradios.com
Skype: Wiki_Wong |  Whatsapp:+8618759146738 | 
TAX ID/VAT No. : 91350583315654711F 
Company No.: 1626283, registered in Fujian, China | Add:Daxiamei Industrial Park, Nan'an, Quanzhou, Fujian, 362331, China

how to find best walkie takie

You are looking for the best walkie talkie, but you don’t know how to find best walkie takie Yet ? Pls don’t worry, 6 steps help u find the best walkie talkie !

Step 1 to find best walkie talkie : Usage scenario

Different work scene decides to use special walkie talkie function . Used for your kids, pls choose bright-colorful kids walkie talkie . Used for sea, pls choose waterproof function walkie talkie . Used for hunting,pls choose large battery capcity. Used for group cooperation,pls choose digital radio.

Step 2 to find best walkie talkie : Frequencies

After confirm your work scene, pls choose frequency .

UHF or VHF ?

UHF radios will never be able to communicate with VHF radios! So once u choose wrong frequency , u will loss much money and delay your work. If you already
have radios and are looking to purchase additional units to use with
them, be sure to select the same band.Pls remember , UHF to UHF ,VHF to VHF !

UHF radios

(Ultra High Frequency) operate on frequencies from 400 to 512 Megahertz (MHz). UHF radios work best for most two-way radio users because the waves are shorter and can get around or penetrate areas of interference found in buildings, thickly wooded or hilly areas and urban outdoor settings. UHF walkie-talkies with a good-sized antenna and enough power
will reach further into a building and push through and around steel, concrete, wood and earth. If your two-way radios are going to be used exclusively indoors or if they’ll need to go indoors and outdoors, UHF is hands down your best choice.

VHF radios

(Very High Frequency) operate between 136-174 MHz. The advantage to a VHF walkie-talkie is that it can cover more distance with less power because VHF waves are longer and remain closer to the ground. VHF radios  work best when there’s a clear line-of-sight between the sender and the receiver with little obstruction. VHF radios are used exclusively in aviation and marine communications where signals are sent across open bodies of water or between the sky and the ground. VHF band walkie-talkies are also great for open fields, golf courses, landscaping and for outdoor security situations with few obstacles.

Legal Frequency Band

Different country has their own legal frequency band,before u buy walkie talkie, u need to know your country’s legal frequency band . After u got your walkie talkie ,pls turn to the legal frequency band .
Related blog: 

Step 3 to find best walkie talkie : Distance range

Distance range is an important factor when u choose suitable walkie talkie . Not all of these two-way radios live up to their walkie talkie range claims, however, as many things can affect actual range, including radio interference, cars, trees, rocks, buildings or concrete. U need to tell seller the distance range u need and your work scene ,and then ,they will rule out other possibilities and help u find the best walkie talkie .
Related blog:

Step 4 to find best walkie talkie : Power

Usually, a higher power allows for greater range and commands a higher price. Typically, a 1 Watt walkie-talkie with an average number of obstructions in its
path yields about a mile of coverage. Range increases by approximately
30-50% if you double power. So, a 2 Watt walkie-talkie might broadcast
within a range of 1.5 miles. 3 watts = 2 miles. 4 watts = 2.5 miles. 5
watts = 3 miles. Actual distances may vary widely based on weather, UHF
vs. VHF, etc. But these are good, general rules of thumb. For some special work ,such as car race , Authority party will have the strict requirements for SAMCOM walkie talkie power. At this time, u need to choose right power to avoid something trouble.

Step 5 to find best walkie talkie : Price

As a buyer , price always a matter of concern, Usually,The influencing factors of the price is SAMCOM walkie talkie Brand,Quality, Function, Accessories ,Hardware facilities and other factors.If u just need a general walkie talkie for outsaide with your friends, just choose a cost-effective walkie talkie without much functions but have good distance range.

Step 6 to find best walkie talkie : Charger type.

If u do follow the above 5 steps , i think u have decided a suitable SAMCOM walkie talkie for your self , but pls don’t forget the last step :choose charger type, Usually, Used for US local ,pls choose 110V US charger. Used for UK local ,pls choose 220V UK charger. Used for AUlocal ,pls choose 220V AU charger. Used for CA local ,pls choose 110V US charger…

That is OK, we think u have chosen a best walkie talkie for yourself or company. 

Friday, August 10, 2018

SAMCOM MINI-1 Pocket-sized UHF Two Way Radio

The SAMCOM MINI-1 Radio is a true long range walkie talkie which, under ideal circumstances, will provide an effective range of more than 20 miles. Under less than ideal circumstances in the open country you can expect perhaps 1/2 that range and in the city center it will be reduced to 1 or 2 miles. The SAMCOM MINI-1 Radio fits neatly into the palm of your hand and operation is a cinch.
Overall a quality product that delivers on more of its promise than most walkie talkies on the market. It’s beautifully built, tough as nails, provides reliable communication even under difficult circumstances and the energy conservation feature is one all walkie talkies should adopt. For the price you can do no wrong with this outstanding SAMCOM walkie talkie.
Pros
The walkie talkie Battery Save Circuit can be a life saver in emergency situations.
The 20+ miles in open country is no joke, although you do need outstanding conditions to achieve it.
The fact that it runs on Li-bo batteries means you can stock up before heading out and not have to worry about a dead unit.
The price is a surprise given the overall outstanding build quality and performance.
Cons
Volume can sometimes be an issue in crowded places.
Belt clip is not as robust as we’d like it to be.
Access to longer range channels can sometimes be a challenge.

Wednesday, November 2, 2016

Digital mobile radio ---SAMCOM DP-20 DMR Radio

Digital mobile radio (DMR) is an open digital mobile radio standard defined in the European Telecommunications Standards Institute (ETSI) Standard TS 102 361 parts 1–4 and used in commercial products around the world. DMR, along with P25 phase II and NXDN are the main competitor technologies in achieving 6.25 kHz equivalent bandwidth using the proprietary AMBE+2 vocoder. DMR and P25 II both use two-slot TDMA in a 12.5 kHz channel, while NXDN uses discrete 6.25 kHz channels using frequency division.

DMR was designed with three tiers. DMR tiers I and II (conventional) were first published in 2005, and DMR III (trunked) was published in 2012, with manufacturers producing products within a few years of each publication.

The primary goal of the standard is to specify a digital system with low complexity, low cost and interoperability across brands, so radio communications purchasers are not locked into a proprietary solution. In practice, many brands have not adhered to this open standard and have introduced proprietary features that make their product offerings non-interoperable.

DMR Tier I

DMR Tier I products are for licence-free use in the European 446 MHz band. In the US, the 446 MHz range is primary US Government with the amateur radio service a heavy secondary user. Some DMR radios that make it across the ocean have caused interference issues with licensed amateur operations. ETSI DMR specifies two slot TDMA in 12.5 kHz channels for Tier I, II and III.

This part of the standard provides for consumer applications and low-power commercial applications, using a maximum of 0.5 watt RF power.

DMR Tier II
DMR Tier II covers licensed conventional radio systems, mobiles and hand portables operating in PMR frequency bands from 66–960 MHz. The ETSI DMR Tier II standard is targeted at those users who need spectral efficiency, advanced voice features and integrated IP data services in licensed bands for high-power communications. A number of manufacturers have DMR Tier II compliant products on the market.

DMR Tier III

DMR Tier III covers trunking operation in frequency bands 66–960 MHz. Tier III supports voice and short messaging handling similar to TETRA with built-in 128 character status messaging and short messaging with up to 288 bits of data in a variety of formats. It also supports packet data service in a variety of formats, including support for IPv4 and IPv6. Tier III compliant products were launched in 2012.

In 2005, a Memorandum of Understanding (MOU) was formed with potential DMR suppliers including Tait Communications, Fylde Micro, Selex, Motorola, Hytera, Vertex Standard, Kenwood and Icom to establish common standards and interoperability. While the DMR standard does not specify the vocoder, MOU members agreed to use the half rate DVSI Advanced Multi-Band Excitation (AMBE) vocoder to ensure interoperability. In 2009, the MOU members set up the DMR Association to work on interoperability between vendors equipment and to provide information about the DMR standard. Formal interoperability testing has been taking place since 2010. Results are published on the DMR Association web site. There are approximately 40 members of the DMR Association.

The standard allows DMR manufacturers to implement additional features on top of the standards which has led to practical non-interoperability issues between brands, in contravention to the DMR MOU.

SAMCOM CP-300 IP Radio SIM CARD Radio

SAMCOM CP-300 IP Radio SIM CARD Radio 
  

1. How it works

First, GSM 3G radio works with GSM850/1900/UTMS2100MHz or GSM900/1800/UTMS2100MHZ(depond on your country). You need to buy a SIM card to insert into the radio and it can talk, cover the whole world. 

Second, GSM 3G walkie talkie cost data flow, normally It is 2.88M per hour for unstopping communication, It is 0.06M on the standby mode per day. 
SAMCOM CP-300 can be made with GPS function.

Third, there will be a management website for you to assign users' account and set talking rights or function. It helps institution with many people to save time and cost on communication.
 
 
2.CP-300 Function

- GPS Function(Optional)
- Battery Capacity Indicator
- Ultra High Capacity Li-ion Battery:4600mAh
- Network Signal Strength Pormpt
- Programmable Function Key
- Voice Prompt
- Bright Flashlight IIIumination
- TOT Function
- Private Calls,Group Calls
- User Authority Setting
-Transmitting Ending Prompt

 3.Specifications

Type
Parameter Item
Specification
Mechanical Properties
Model No.
SAMCOM CP-300
Dimension
100mm*58mm*32mm
Weight
194g
Working Temperature
-30 to +75
Basic Parameter
Working Voltage
3.3V ~ 4.2V (Standard 3.8V)
Working Current
250mA @ UTMS 2100/900
220mA @ GSM 900
Peak Current
0.8A
RF Parameter
WCDMA
Band 1:2100M  Band8:900M   
band5:850M(optional)
GSM
GSM/GPRS : 900M /1800M
GSM/GPRS : 850M /1900M
Maximum Output power
WCDMA  900 /2100MHz: Power Class 3   (+24dBm +2.5dBm /-1.5dBm);
GSM/GPRS 850 /900 MHz :Power Class 4 (+33dBm +2.5 dBm /-0.5 dBm);
GSM/GPRS 1800 /1900 MHz :Power Class 1 (+30dBm +2.5 dBm /-0.5 dBm);
Receiving Sensitivity
WCDMA 900:-108 dBm;
WCDMA 2100:-109 dBm;
GSM850 /900 /1800 /1900: -106 dBm;
GPS
GPS
GPS Positioning, 1.57542GHz;
Sensitivity
Catch -144dBm,Track -159dBm;
Technology Standard
Data Speed Rate
GSM CS:UL 9.6kpbs / DL 9.6kpbs
GPRS:Multi-slot Class 10
EDGE: Multi-slot Class 12
WCDMA CS: UL 64kpbs / DL 64kpbs
WCDMA PS: UL 384kpbs / DL 384kpbs
Protocol
HSDPA/WCDMA/EDGE/GPRS/GSM

 4.Standard package
- 1pcs CP-300 radio body, 
- 1pcs antenna,
- 1pcs AC adapter,
- 1pcs rapid desktop charger, 
- 1pcs belt clip ,
- 1pcs user guide.