Two Way Radio GPS
GPS (global positioning system) is a mechanism which a device can use a number of in-range satellites to trangulate it's position and transmit that position back to the repeater or base station. This enables the supervisor to more effectively manage team members by knowing their current location.
GPS Demonstration Video
download this Motorola GPS information sheet.
For more information on GPS,
GPS is designed for outdoor tracking. See "Indoor tracking" for indoor solutions.
GPS outdoor tracking is a standard feature of the Hytera PD715Ex.
TDMA is a technology that allows several users to share the same frequency channel by dividing the signal into different time slots. With DMR this is two time slots to every 12.5KHz frequency channel allocation. Before DMR every 12.5KHz frequency allocation could carry just one broadcast of RF traffic. Now with DMR 12.5KHz bandwidth allows two voice channels. See the video below for an explanation on how this works.
Hytera have a unique system called Psudo Trunk that, instead of restricting radios to their allocated DMR time slot, allows a radio to choose any available time slot to make a call. This enables trunking-like behaviour across both DMR time slots. This also allows transmit interrupt accross multiple voice channels / talk groups.
Psudo-Trunking works with or without a repeater.
Transmit interrupt is a feature that enables a high priority transmission to take priority over normal priority transmissions. For example a supervisor might want to make an important announcement to the team or call for an evacuation in the event of a incident.
Transmit Interrupt Information Video
Transmit Interrupt is a standard feature of the Hytera PD715Ex.
MPT1327 is an analogue trunking soution that makes use of multiple repeaters and creates "channel pools". How it works is that when a radio needs to make a call (or transmission) the MPT1327 controller allocates a free repeater channel to the radio. When the call ends, th e channel is allocated back to the available channel pool. The MPT1327 solution is now deprecated in favour of more modern digital solutions such as DMR or dPMR Tier II and Tier III.
There are stil a very many MPT1327 solutions still installed and that's why some new radios have the ability to operate on an MPT1327 system. Of course when operating on MPT1327, even a digital radio will have to operate in analogue mode as MPT1327 voice traffic is analogue. Usually MPT1327 functionality is an optional extra by way of having an MPT1327 option board fitted in the radio, or a software activation.
Hytera PD715Ex has MPT1327 compatibility built in and is available free of charge.
Lone Worker Feature
Lone Worker is a feature found on many two way radios where it's able to send a pre-determined signal, for example a distress call or alarm, to other radios in range, Lone Worker requires some type of interaction from the radio user after a period of radio inactivity. An example of this is the radio can be set to require the radio operator to interact with his or her radio once every 30 minutes. If they fail to do so, their radio will start making an audible sound. If there is still no interaction with his or her radio within 1 further minute, a alarm will sound to other team members to tell them a team member is not responding to Lone Worker. The supervisor can then dispatch another team member to the non-reponsive team member's last known location to offer assistance.
Lone Worker is built-in to the Hytera PD715Ex.
Man Down provides remote monitoring of workers by detecting if their radio is upright, or if the radio is on it's side assumes there may be a problem. Radios which support Man Down are fitted with an accelerometer (or similar device) which allows them to detect the orientation of the radio. If somebody slips or falls, they are likely to be on their side, Man Down will automatically detect this, activate and transmit an alert to call for help from a supervisor or other team members. This works is almost the same way as your smart phone which knows if you have it positioned portrait mode or landscape mode. See this video below to see how the a works.
Man Down Demonstration Video
The Accelerometer Science
The science which allows man-down to work is almost the same way as your smart phone which knows if you have it positioned portrait mode or landscape mode. See this video below to see how the a works.
Man Down is built-in to the Hytera PD715Ex.
All Hytera two way radios carry a 24 month return to base (RTB) warranty. Hytera will guarantee you a working radio by offering a repair for a period of two years from the purchase invoice date. The warranty only covers the radio itself and does not cover the battery, antenna or any other consumables or accessories.
Warranty offered is a manufacturer's warranty and is directly with Hytera. However, all warranty claims must be made via Radotronics.
All licensed radios require a licence issued by Ofcom. Radiotronics can facilitate that and make the application on your behalf. Below are the licence options.