Naidia Long Range Remote Pump Controller.

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Above: Naidia Controller hooked into a UHF Motorola Syntrx (headless option).

Right: Naidia Controller rear view, hooked into an AWA RT85 25Watt VHF transceiver.

Below: Naidia controller hooked into a UHF Motorola MCX100 30Watt transceiver.

Tactical Link Communications of Naidia in South Australia has produced a limited quantity of long range remote pump controllers. The purpose of these units is to interface to any FM two-way radio to allow long distance control of water pumps, or anything else needing to be switched on or off.

The unit simply controls 4 relays which can be independently turned on or off using DTMF tones transmitted over any FM radio.

So to make it all work you need a radio at one end fitted with a DTMF control microphone, and a radio at the other end fitted with the Naidia Controller. Each Naidia Controller has a unique user selectable 4 digit "pin number" so other people can't operate it, and so that multiple controllers can co-exist on one radio frequency. The Naidia Controller will give you return confirmation that your relay control commands have been accepted. One DTMF control microphone can control any number of Naidia Controllers, and still function as a normal voice microphone.

The Naida Controller is specifically designed to operate with any FM two way radio, VHF or UHF it makes no difference. The Naidia Controller works with most secondhand high power two-way radios. You do not need to buy a NEW radio. Using decent radios and matching antennas the range could be expected to be 50km or more depending on the terrain.

Important point ===> The performance of any radio controlled system is limited by the radios and antennas. <===

It is important to use good quality radios, that does not necessarily mean expensive. The critical overall factor is the frequency stability of the radios chosen, coupled with the receive filter performance. Most 25Watt commercial radios are suitable. Its best to avoid using UHF CBs they are built to a price, not a standard. Specifically avoid Uniden and GME radios.

For example the ex-police MCX100 pictured here cost $250, the ex-ambulance RT85 less than that. The ex-police FM91 is around $200.

If you choose to use new UHF radios with the Naidia Controller the Vertex VX-2500, available from POSNAV in Adelaide is the unit of choice, combining high performance with realistic cost. It meets the requirements for frequency stabilty. Email Brenton at Posnav: info@posnav.com.au .

Cost: Nadia Controller $330 inc GST. Remember that radios, antennas, power supplies, DTMF microphone, interface cables all cost as well.

Make it cheaper: Supply you own radios, antennas, power supplies. We can make up adapter cables at time plus materials cost. We can supply MCX100 radios for $250 inc GST, one of the best radios ever manufactured.

I'm a farmer and I know how much time and money is spent driving around the farm to switch pumps on and off. A remote controller will pay for itself many times over.

Above: Typical DTMF microphone, hooked into a Philips FM91 25Watt UHF transceiver.

Above: Tactical Link Communications, Naidia controllers.