Frequently asked questions


Q. Has the 1s got a built in loudspeaker and microphone ?

A. Yes, an internal loudspeaker is provided and connected via a 3.5mm jack socket on the rear panel. Connecting your own loudspeaker to the rear panel LS socket, disconnects the internal loudspeaker. The front panel has a goose-neck microphone.

Q. Will the 1s control a Motorola base station ?

A. Yes, the 1s has embedded software which is dip-switch selectable and will permit the selection of Motorola or Simoco tone control, plus DC control if the base station is located in the same building and not equipped for remote control.

Q. Can we use our existing GPS system with the 1s ?

A. Yes, the 1s data port is designed to provide access to, and control of the radio channel by an external modem. The interface is TX and RX audio (-10dBm) plus PTT and a busy output. The configuration also permits the setting of priority to either speech priority or data priority.

Q. What power supply is needed by the 1s ?

A. The 1s is supplied with a switch mode power supply unit with a wide range input voltage (90v to 235v AC). The output voltage is 12 volts DC at 1 amp.

Q. Can I use an external microphone with the 1s ?

A. Yes, the 1s has a socket for an external microphone including PTT, and also a PTT socket for use with a footswitch.

Q. Will the 1s hear data transmissions?

A. The 1s is equipped for automatic detection of standard 1200 baud FSK data bursts, and will mute the loudspeaker after the first 50mS.

Q. How are the various signalling options programmed?

A. For the 1st generation DRC-1s options offered are set by dip switches mounted on the main printed circuit board. With the 2nd generation DRC-1s, the signalling options are set via the DRC-1s / DRC-s configuration toolbox.

Q. Will the DRC-1 operate with a Simoco PRF1060 base station ?

A. Yes, the DRC-1 generates key tone and FSK supervisory messages for full control and reporting of the Simoco 1060 base station

Q. What other base station sets are supported?

A. We have embedded tone control for Motorola and Simoco as standard plus an analogue interface mode (audio in and out) plus an open collector (active low) for PTT.

Q. Will the DRC-1 decode selective calling ?

A. The DRC-1 will encode and decode selective calling signals. Furthermore, the system administrator can assign alpha tags to call Idents to provide a more familiar interface.

Q. Can the DRC-1 hold calls in a queue ?

A. The DRC-1 has a ten deep incoming call stack. Using the LCD display the operator can see the last call input or scroll through the list using the up-down scroll keys. Outgoing calls may be taken from the stack or keyed in manually using the keypad facility.

Q. Can I record the conversations from the DRC-1?

A. Yes the DRC-1 has a dedicated port for recording all radio traffic both input and output to a master recorder. A second port can be configured to work with instant recall recorders where an incoming call can be recorded and then played back to the local operator any number of times.

Q. Can I use the DRC-1 headset to take telephone calls ?

A. Yes, the DRC-1 employs common headset working. The common port connects to a desk top telephone unit and calls may be initiated or picked up by a single stroke of the DRC-1 transfer key.

Q. Can I change the way the DRC-1 functions?

A. Yes, the DRC-1 can be programmed via the keypad and LCD display. The type of base station, selcall formats, alpha tags, soft key functions and all audio levels are programmable by the user.

Q. Can I use the DRC-1 with any base station ?

A. Yes, the DRC-1 will operate in a stand alone mode with Simoco and Motorola base stations. Base stations with an analogue interface are accommodated by placing our remote control card in or near the base station to be controlled. The remote control card is programmed to decode the AWC tone set and give full control via landline, or private connection.

Q. Must the base station be a duplex one?

A. No. Provided that talk through facilities are not required, the DRC-1 can be programmed to implement delays in its data traffic to compensate for RX to TX switching. If talk through is required, then the base station must be duplex. The talk through can be achieved by using the local talk through facility programmed into a DRC-1, or by having a talk through path built into the base station. The latter will also give talk through on line failure.

Q. Can I connect telephone calls to the radio?

A. Yes, the DRC-1 has common headset working which permits the dispatcher to make and answer telephone calls. When a telephone call is made or received, pressing the "Telcon" key connects telephone and radio users together. In this mode the dispatcher is listening and must press his PTT key to talk to both parties.

Q. Can a TC-1 operate over private wire?

A. The TC-1 can operate over any communications path which is presented at either end as 2 pairs, TX pair and RX pair. The input and output of a TC1 is 600Ώ and operates nominally at -10dBm (peak speech). The keytone is presented to line at the control end at -18dB relative to peak speech, or approximately -28dBm.

Q. Can I interface a TC-1 to any base station?

A. The TC-1 has 600Ώ audio ports plus an open collector for PTT. The radio should present a PTT which is a pull down to activate. The audio to microphone can be adjusted by using the internal ports, as can the audio level to line received by the TC-1. However the radio set audio output should be adjusted to not more than 0dBm to avoid distortion.

Q. What facilities can I control using a TC-1?

A. The TC-1 receives FSK messages from the control end. These messages can place the system into talk through mode, and change channel. On site alarms can be connected to the eight bit port and will be sent to control where an alpha tag (DRC1) will indicate the alarm condition and site name.

Q. Will the TC-1 fit inside a base station?

A. A version of the TC-1 has been designed to fit inside the new Icom FR3000 base station. Standard TC-1 units fit externally to the base station and are available in a wall mounted box and 19 inch 1U format.

Q. I need a new base station radio set but use a Motorola control unit. Can I use the TC-1 to translate Motorola signalling to another base station.

A. Yes, in part. The TC-1 will receive and decode either Motorola or Simoco signalling (switch selected). When the TC1 receives the correct tone signalling it converts the functionality to open collector PTT plus audio paths, plus supervisory in the form of latched open collector drivers. This means you can put any make of base station into operation where the control system is Simoco or Motorola compatible.

Q. Can I use the TC-1 in systems which employ best signal voting?

A. Yes, the TC-1 has a plug in card for encoding the signal level based upon the RSSI from the receiver. Please contact sales about this facility before ordering a TC-1.

Q. Can the engineer on site communicate with control?

A. Yes, the TC-1 has a connector for an engineers handset. The direction of speech is controlled with a toggle switch. The engineer can speak with control, listen to line comms, and operate the base radio set from the engineers handset.

Q. Can the TC-1 control more than one base station?

A. No, but if you are thinking of dual bay systems, i.e. systems which have a main and a standby transceiver, then the TC-2 will perform the function of control plus changeover from the operating equipment to the standby equipment.

Q. What is the minimum configuration of a DS32 ?

A. Two cards offering four ports which can be configured in any combination of 1 operator 3 channels to 3 operators 1 channel.

Q. What is the man machine interface when using a DS-32 switch?

A. You can use a full desktop controller like the DRC-1 which becomes a DRC-32 when used with the switch, or if you are going to a GUI, the DRC-U will provide a lower cost interface into the PC.

Q. How is the operator unit connected to the switch ?

A. We designed the system to use industry standard Cat 5 cable and crimp connectors. Newer buildings which have a structured wiring scheme may provide ready to use ports to interconnect operators and the switch.

Q. Can the switch have audio recording facilities?

A. Yes, each port has an audio output which may be connected to a multi channel recoding system. Plus, each desk-top unit has local record and playback facilities.

Q. How is the switch programmed?

A. The switch is programmed using a laptop computer or other terminal which will run a simple communication program. All of the switch parameters are stored in non volatile memory located on the switch back plane. All of the cards are hot swap capable and the correct parameters are downloaded to the exchanged card upon plug in.

Q. What base station radio sets will the DS-32 Support?

A. The DS-32 has embedded software for Motorola and Simoco tone controlled base stations. Plus, by using our TC-1 remote card, base stations equipped with audio in and out plus PTT line can be controlled by the DS-32 switch.

Q. What signalling is available within the DS-32?

A. The DS-32 has embedded software to encode and decode all selective calling standards. Plus, the DS-32 is equipped for FSK signalling.

Q. Can I use a fixed mobile radio set with the DS-32?

A. Yes, the DS-32 has a facility to drive any radio set with 600Ώ audio, PTT line and busy signal.

Q. I already use a DS-Micro but need more channels, is my investment in the Micro wasted?

A. No, the DS32 uses the same cards as the DS-Micro, and so you need only purchase the case and extra cards.

Q. Can the switch card work on a Tetra System?

A. Yes, we have a fully operational (those facilities presently supported) interface to a mobile's PEI interface. The interface facilitates Group and Direct calls into and out of the switch. The software available also includes standalone operation in both TMO and DMO modes of operation and can be used as a none-service area gateway into the service area. see gateway pdf on DS32 page.

Q. We have 1 operator and 3 channels at the moment. What is the minimum configuration of the Micro please?

A. The minimum configuration is 2 cards (4 ports). This is exactly what you need for your present size of operation.

Q. We are a shopping mall and have 2 operators and 5 channels at the moment. We are using your Micro-8. Is this investment wasted when we add 2 more channels at a later date?

A. No, the DS-32 uses exactly the same cards as the DS-Micro. When you order please make sure we know this and we will supply the DS-32 case plus one card and fit your existing cards. It is our design aim to reduce upgrade costs.

Q. I am security chief at a shopping mall. We need to go to a system which provides alarm calls, voice recording, and multiple operator access to multiple channels. Will your Micro-8 do this?

A. It depends on your number of channels and operators. The Micro-8 will provide all the functionality you seek, but is fully expanded at 8 ports. This can be 1 operator and 7 channels, to 7 operators and 1 channel. After 8 ports, you will need to look at our DS-32 (32 port device). If the Micro is suitable for your present requirement, then upgrade is made less expensive by re-using the cards from your Micro-8 system.