DISCONTINUED  :   We do not sell it anymore but have left the information here if it is required .

The "Custom PRS 1600"       

                     This page should be read in conjunction with the information on the Uniden radios 037,040-042 as a lot of hints for use are applicable to all handheld units in riding situations  and saves me repeating information .


 The radio operates on the Australasian/NZ  UHF CB frequencies and is compatible with any other UHF CB radios sharing the same channels .This is a smaller, less expensive radio   than the Uniden  037, 040, 042, 044  .  It is a very basic two way Unit and is  modified by Pinfold Health Services Ltd  for  motorcycle use.  It has  has only 16 Channels not 40, ch1 to 16  depicted on the single digit red Led display as 0-9 then a-f   ( you can only use one at a time anyway ), runs off 3 AA cells, does not scan, nor  have repeater offsets, however has a respectable measured RF output of +26dBm ~ ( 400mW ) into 50 Ohms and the mute opens at 1 uV  ( most other handheld units are only ~500mW anyway). It will run for quite some time on  three alkaline AA cells, as  the little Uniden radios do in rider to rider situations.  The radio is simple to operate, having only on off-on volume control and 2 buttons to step channels up and down, and a call button.  This radio will NOT accept the standard PHS headset unit ( moulded radio plug with two pins) that fits the Uniden ,icom GME and other brands of radio .  It has a single 2.5mm stereo female socket for mic/earphone on the top to take  the custom made   PHS "thin mic"  type headset ,( our cell-phone headset )  and has a 2.5mm female socket in the side of the radio into which  plugs the handle bar mounted ptt button. This set-up gives the radio the ability to be disconnected from the riding gear and used as a stand alone walkie talkie when required .

This unit  is not waterproof or as robustly constructed as the more expensive radios, but if handled carefully should give sterling service . Like all hand-helds, the communications range is dependant on where the radio is placed on the bike , up high where both radios have a good clear "view" of each other (i.e stuck to the side of your helmet ) is best and should give you more than a kilometre +, in you jacket pocket is not the best place for the radio  to obtain good range ! To get the best "at speed" performance , make sure the earspeakers are correctly positioned over the ears ,move them around over the ears until they are in the "loudest" position .

There is no reason why this inexpensive unit  cant be used in conjunction with the other described Uniden based rider to rider two way radios,  as  the pillion part of a WIRELESS rider to pillion intercom! the pillion will now be able to speak to other motorcycles as well as the rider . 

NO other intercom I know of does THAT!  !!!  

Scan of the operators manual 

Custom PRS 1600 UHF Transceiver Instruction Manual

Thank you for purchasing our PRS (Personal Radio Service) 1600 radio. PRS is a long distance, two-way communication system. The PRS 1600 is characterised by its good range, compact size, light in weight and easy to carry. With two or more PRS 1600 Radios, you can freely communicate with your family members and friends during various kinds of outdoor activities.  Do Not use in Explosive Atmosphere or near Explosive Blasting Operations. This PRS Radio is not designed to be used as SAFETY EQUIPMENT or in CRITICAL SITUATIONS. Signal Coverage and Range can not be guaranteed to be reliable in all situations, due to interference, or the nature of the terrain or coverage area required. Please keep this unit dry.

Features of PRS 1600

•      LED Display

•        UHF FM Frequencies

•        No License Required

•        No Air Time Charges

•        Over 1 km Range

•        16 Channels

•        Key Lock Function

•      Talk Confirmation Tone

•       Auto Battery Saver Circuitry

•      Auto Squelch

•       Belt Clip

•      Tone Call Button



Jl^__Turn the power off.

2.    Use 3 "AA" Alkaline batteries for best operation.

Please remove the belt hook before inserting batteries.

Open the battery compartment by pulling down and then insert batteries.
Make sure that the batteries are in the right position (the spring end is Negative end of battery).

3.    Put the battery cover and the belt clip back on.

4.    Do not use and mix the old and new batteries or different types of batteries together.


1.   Turn On

Turn the Volume / Power On/Off switch, clockwise and adjust the volume level to a suitable level You will hear a "beep" sound, which means the power supply is connected and the unit is ready to use. To communicate both (all) parties must select the same channel.

2.    Channel Setting

Both the calling and receiving units must be set on the same channel. Select one of the 16 channels by pressing and

releasing "a " (UP) and "V" (DOWN) keys. Selected channel will be shown on the LED display.

3.    Call Tone

Briefly press "Call" button to call other parties on the same channel. Receiving parties will then hear the calling tone. After pressing "Call", the calling unit will beep, which means it is transmitting tone to other parties. After a few seconds tones will indicate that the Call tone has been sent. You are not able to speak while transmitting this call tone until it has finished.

4.   Communication

To speak wait until the other party has finished talking or the call tones have stopped.

Press and hold the "PTT" button.

Wait a second before speaking clearly towards the radio.

Release the PTT button when you have finished speaking.

You can not listen and talk at the same time.

(It is important to wait a second before speaking after pressing PTT button or the first word you say may be cut short).

5.   MON Button

To hear everything happening on a channel, including weak transmissions, hold down "MON" (monitor). The unit will

then be in a continuous receiving mode and hiss sound will be heard. Release MON to turn auto-squelch back on.

6.    Key Lock Function

You can lock the channel up down and the tone call keys to prevent accidental activation.

To Lock

Turn on the power switch

Select the desired channel with the channel up/down buttons

Wait a few seconds until the display has changed to a flashing dot

Press and hold the left hand channel up button for one second and then while continuing to hold the left button also

press the right hand channel down button, holding both down for a few seconds until the dot appears by the channel


Release both buttons and after a few seconds the flashing lock symbol will appear.

To unlock

Press and hold the left hand channel up button for one second and then while continuing to hold the left button also

press the right hand channel down button, holding both down for a few seconds until the dot beside the channel

number goes off.

7.    Mic and Earphone Jack

A socket is provided for a suitable headphone earphone socket if required.

Please note that combined "SPK" and "MIC" socket is 0 2.5mm. Always turn the volume lower when using or

connecting an earphone to prevent loud sounds. A suitable Mic / Earphone is available via your radio supplier.

8.    Low Battery Indicator

If "L" is shown on the LED display, it indicates that the battery power is low. One has to replace batteries. Continuous

operation will lead to unsatisfactory and poor performance.

9.    Turn Off

Volume level is decreased when turning the "VOLUME" knob anti-clockwise. Continue to turn the volume knob until

the power is cut.


16 Channels                                                    \} Operation Frequency :     UHF - from 476.425MHz

Talk Range          :     Depends on Terrain, Battery type and Condition. Nominal 1km or 2km over level open Ground. Range will be reduced in buildings cars and around hills and interference.

•Power Source        :     3 "AA" Alkaline Recommended for best results. (Can Use any 3 "AA" type) Battery Life          :     Alkaline battery - 30 hours (2300mA) ; Rechargeable battery -10 hours (600mA^

*Channel Frequency*



PRS Channel


Frequency (MHz)




PRS Channel


Frequency (MHz)




PRS Channel


Frequency (MHz)














































































































Important Notice

>    All functions of PRS 1600 have been pre-set and comply with Australia and New Zealand requirements. >    The transmitted signals of this product are within the required frequency range. Any adjustment on the

frequency range may be illegal.

>    Almost every electronic device is susceptible to electromagnetic interference (EMI) if inadequately shielded, or configured for electromagnetic compatibility. Under working condition, PRS 1600 may interfere with TV or radio signals. In order to check this, one can turn on the PRS 1600 or press PTT button when a TV set or radio is on. Quality of voice or image from TV sets or radios might deteriorate, but voice and image will recover again after PRS 1600 is turned off. To avoid interference, Avoid using PRS 1600 from near TV set or radio signals receiving equipment.

Care and Maintenance

1.    Handle PRS 1600 gently and carefully.

2.    Avoid using it in a hostile environment, such as dusty, humid and high temperature environment.

3.    To clean the radio, wipe with a soft cloth dampened with water. Do not use corrosive chemical solvents to clean the dust on the surface. Battery contacts can be wiped with a dry, lint-free cloth.

4.    Remove old batteries before putting the unit away or battery leakage may damage the unit.

5.    Service is available via the store where the radio was purchased.


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Pinfold Health Services Ltd., 1172 Arawa St. ,Rotorua , New Zealand  ph +64-7-3488850 fax +64-7-3486555 pinfold@xtra.co.nz

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