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portable FM  link



NRPU01  (portable transmitter)  $1995USD

NRPU/R  (receiver)  $1875USD

Remote Pick-Up System

This RPU (Remote Pick-up System) has been engineered by combining sound quality, compact size, versatility and considerable power for its size. The 3 XLR input connectors can be used either for microphones or as “line” inputs just by moving a switch.  All the “Inputs” are adjustable as level as well as the 2 monitor headphones outputs. A multi-function meter indicates the forward power, the reflected power, the modulation level and the status of the batteries.

On the side of the unit, as visible in the picture, (side view) there are two rows of rotary switches that can be set on two different frequencies; this way, once the frequencies are set, even the most unskilled operator can switch F1 to F2 on the front panel and a LED will indicate which one is operating. The RPU can also handle AC voltage from 100V to 240V without the need of any voltage selector.  At the same time, it is possible to power the unit through a car battery by using the external battery input connector.  To further simplify the operation, another switch on the front panel, will change the output power from full (100%) to low (20%); this is a very useful feature to spare battery life when operating in the field.

A practical belt battery pack is offered as an option; it supplies 12Volts @ 12Amps for long self-sufficient operation.

The NRPU01 can operate with various antenna possibilities; as seen in the picture, a whip antenna can be directly connected to the unit which makes it really portable, although it does not offer much gain. In this configuration the studio must be in optical view and not too far. If operating from a car, it is possible to insert the whip antenna on a magnetic base that will be attached to the roof of the car providing a good reflection plane for better performance. If operating in the field from a fixed location, then it’s advisable to use a light directional antenna as seen in the picture, so that the gain provided will allow for more distance and better signal level.

The receiver is a one-rack space unit and needs a directional external antenna with the capability of being directed toward the RPU transmitting unit. The audio output is connected to the main studio to be sent on the air when needed.  The NRPU01 has a built-in sub-audio tone that can close a contact on the receiver so that it is possible to give a remote command from the field for whatever purpose.




Side View


NRPU/R RPU Receiver


NRPU01 Specifications

Frequencies: from 150 Mhz to 960 Mhz in 20 Mhz ranges

Frequency stability :  ± 0.00025% , 0 to 50 C (32 to 122 F)

Output Impedance & Connector: Type “N” female 50 Ohms

Frequency setting: 2 frequencies with rotary switches

Frequency selection: F1-F2 switch on front panel

Power output: 20W on 400-470 band, 16W on all others

Max Frequency Deviation: 25 Khz standard; other upon  request

Signal to noise ratio: 60dB with microphone input at ± 25 Khz

                                  Deviation, 70dB or better with line input

                                  At ±25 Khz deviation

Harmonic Frequencies Level (ref. to carrier):  < -65 dB

Spurious Frequencies Level (ref. to carrier):  < -80 dB

Audio Input: 3 Microphone inputs at -70dBm to -40 dBm,

             150-500 ohms balanced XLR-3 conn. and

             transformer coupled input, level control provided.

                    Switchable to high level line inputs, -20dBm to

                    + 10 dBm, 600 ohms balanced.

Audio Frequency Response: 50 Hz to 15 Khz for ± 25 Khz Dev.

( 1 dB roll off)

Peak Modulation Limiter: Built-in

Distortion (THD):  < 1% @ 25 Khz deviation

Power Supply: operating voltage : 100 –240 V direct input

Power consumption:  50 / 70 VA

External Power Supply: 12-15 V through side connector

Battery Operation: optional 2 battery belt  12 V  12A

Dimensions:           Weight                10 Lbs / 4.5 kg

                              Width                  8.7”/ 220mm

                              Height                 3.4” / 90mm

                              Depth                  11” / 280mm


NRPU/R Specifications

Frequencies: from 150 Mhz to 960 Mhz in 20 Mhz ranges.

Frequency stability :  ± 0.00025% , 0 to 50 C (32 to 122 F)

Input Impedance & Connector: 50 ohm type ‘N’ female

Frequency setting: LCD display Password protected

Sensitivity: 50 dB with -75 dBm input

Audio Frequency Out: 0 dBm at 600 ohms ±6dB adj.

IF Output: 0dBm at 10.7MHz / 50 ohms

Audio Outputs:: 2 BNC, MPX connectors ; 1 XLR mono; 3 BNC SCA

De-emphasis:  50 / 75ms internally selectable

Input Voltage Range:  from 3 uV to over 30 mV

Image Rejection:   > 70 dB

Distortion (THD):  < 0.8% @ 25 Khz deviation

Frequency Linearity (30Hz – 15 kHz):  0,3%

Signal to Noise Ratio:  >60dB

Selectivity:  -40dB at ±500KHz

Power Supply:

        operating voltage :                     100 –240 V direct input

        power consumption                     30 VA

        battery powered (optional)            12-15Vdc, 1.8 A

Operating Conditions:

   operating temperature                 0° to +50°C (32° to +122°F)

     relative humidity                          95% max.


        Weight                                       10 Lbs / 4.5 kg

        Width                                        19” / 483mm

        Height                                        1.73” / 44mm

        Depth                                        18” / 457mm



$135USD $95 See our antennas 



Contact Information:





Wavemach Communications
320 Dixon road, Suite 302
Toronto, Ontario, CANADA
M9R-1S8, buzzer code 131
E mail



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Wavemach Communications
320 Dixon road, Suite 302
Toronto, Ontario, CANADA
M9R-1S8, buzzer code 131