New from Falcon Wireless!
our new D-Peat product family is specifically designed for the special needs of public safety and healthcare providers!
Seldom does a day go by when we dont receive a call stating that a law enforcement hand held radio does not have the power to communicate in certain dead areas. There are several ways to resolve the problem. If you choose to address the problem at the infrastructure level, you move the base station to a better location, increase power, add a repeater, or integrate a receiver voting system all approaches can be expensive!
The next alternative is to add a mobile repeater that consists essentially of two radios installed in a vehicle connected to each other to provide repeater capability again an expensive proposition (with the exception of D-PEAT-E more about this shortly).
Then there is the simplex repeater approach. A simplex repeater (described in more detail shortly) can use an existing mobile radio, be included as an internal option on radios such as the Uniden 1525. Priced at just $289, these devices can be placed selectively in the vehicles that need them since no change in infrastructure is required. The D-PEAT model can easily be connected to most 2-way radios including Motorola, Kenwood, Relm and Vertex as well as any handheld radio that allows the addition of a control channel with CTCSS.
The D-PEAT model can also be used by fire and EMS users who have a similar need. The basic D-PEAT unit receives directly from the base unit, records the call, then transmits the message. The base station operator hears the call in real time whereas the field officer will hear his or her transmitted message echo each time they transmit.
These units are known as In-Band Simplex Delayed Time Repeaters
The term In-Band means that the repeater receive frequency is in the same frequency range, or band, as the transmit frequency (i.e. VHF 150 MHz band or 450 MHz band as applicable). Delayed Time means that the incoming message from the originating radio is recorded and then automatically rebroadcast at the end of the original transmission. Here is an example:
In a rural environment, the local Sheriffs Department has adequate coverage for station to mobile coverage throughout the county. This reflects the original planning of the system designers who did not recognize the need for personal communications when the system was designed in the 1960s. Now, the deputies rely on personal hand held 2-way radios that can hear the dispatch station but do not have the power to talk back.
Lets assume this particular system operates on a frequency of 155.010 MHz. The officer is outside the vehicle and needs to call dispatch without returning to the vehicle.
We add a second channel to his handheld radio (one of the low power 2 watt frequencies will do nicely we will assume 155.575 for an example). We now add a CTCSS squelch code to be sure the system is not accidentally keyed up by someone else. For our example, we will assume a CTCSS tone of 131.8 Hz. (most radios will accommodate this change). We now program Channel 2 (155.575 with a CTCSS tone code of 131.8) as the transmit frequency for the hand held radio and retain 155.010 for the receive frequency. In the mobile radios, we program Channel 2 to receive 155.575 with CTCSS tone code of 131.8 and the transmit frequency of 155.010.
Using the D-PEAT system, the officer simply changes the mobile radio and hand held channel selector to Channel 2 whenever they are out of the vehicle. The officer will hear a repeat of each of his or her transmissions. Dispatch
will be unaware of the repeating process since the path
from the mobile to dispatch is in real time. 
