Q-MAC customers are encouraged to stock our range of simple to use test tools to quickly diagnose product faults.
QM4082 Q-MAC Antenna Current Meter
The Q-MAC Radio frequency Antenna Current meter is used to measure RF current in Manpack whip antennas. It comprises a Current Transformer Head which is slipped over the whip antenna and a meter unit which displays antenna current in the range 0.2 ampere to 1 ampere.
RF current is converted to light intensity which is sent down a fibre optic cable and a meter displays received light intensity which correlates with antenna current.
To measure RF current on a Manpack, slip the sensor head over the whip antenna to the bottom of the whip, then plug in the optical cable and switch on the meter. When the tune button is pressed on the Manpack, antenna current can be observed. Using the calibration curve, the exact value can be recorded.
The meter can be used to measure comparative radiated output on different manufacturers Manpacks with a whip antenna. The meter provides a useful system confidence check. If the meter is deflecting according to expected results you can be assured that all components in the system are functioning correctly. Often lack of establishing a link with a remote site can incorrectly be interpreted as equipment failure when in fact propagation issues such Ionospheric conditions is more often the cause.
QM4085 HF-90 Test Unit
The HF-90 test unit is designed to rapidly diagnose failures in a HF-90 or HF-90M. The unit will test the following features:
Transmit Output
Transmit Power
Correct Input Voltage
RF Receive
Auxiliary DC Feed
Antenna Tuner Control Signal
The unit is supplied with leads to connect to:
DC Power Supply or 12 Volt SLA Battery
HF-90 or HF-90M Rear Power/Aux Power/Speaker output connector
Coaxial Connector
A standard microphone can be used as the signal source for testing transmission. No special tools are necessary to operate or fit the unit to the HF-90/M.
QM4081/M Voice Enunciator Unit
The Voice Enunciator Unit allows you to pre-record a voice announcement which will then periodically broadcast the prerecorded message using the HF-90 or HF-90M. The unit contains a digital voice recorder and electronic circuitry that will activate the PTT control on the HF-90/M at pre-set intervals. This feature is useful for situations where unattended test transmissions are required for testing propagation during comparative field trials or range tests on different antennas.
QM4084 DC Blocking Filter
When connecting an HF-90 or HF-90M to a laboratory instrument, if the unit has been configured for use with TA-99 or TA-90M Units, there will be DC Voltage present on the BNC antenna socket. It is therefore necessary to use a DC blocking filter to prevent DC reaching the instrument.
QM4072 Asymmetric T Piece
The Asymmetric T Piece allows a very small sample of the RF output signal from the HF-90 or HF-90M to be taken for display on a sensitive instrument such as a spectrum analyser or oscilloscope. The main signal is connected to a dummy load or antenna. The tee signal level is -30dB.
QM4071/M Breakout Box
When performing laboratory measurements on the HF-90 or HF-90M, the breakout box is indispensable. It has 4mm banana sockets and BNC ports to allow AF input, AF output and PTT control. It is fitted with a microphone connector to suit the radio.
QM4075 HF-90/M Dummy Load
The dummy load can be fitted to an HF-90 or HF-90M BNC Socket to absorb the emitted power allowing correct termination during laboratory tests. The DC blocking filter will also be required if DC is present on the BNC Socket.
The Q-MAC Radio frequency Antenna Current meter is used to measure RF current in Manpack whip antennas. It comprises a Current Transformer Head which is slipped over the whip antenna and a meter unit which displays antenna current in the range 0.2 ampere to 1 ampere.
The HF-90 test unit is designed to rapidly diagnose failures in a HF-90 or HF-90M. The unit will test the following features:
Q-MAC HF-90 & HF-90M Transceivers Test Equipment