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Australis 26k Scanning Receiver

The Australis 26k Scanning Receiver is a sophisticated, lightweight, and portable tracking instrument. It features an illuminated liquid crystal display (LCD) for night time use, fast-charge capability, and a port for computer connection. A date logger module to suit the Australis is also available, which will record the presence or absence of transmitters. This saved information can then be downloaded to a computer.

The Australis comes with a heavy-duty leather case allowing it to easily be carried around the neck or from a belt. The battery pack consists of rechargeable NiCad batteries that have an operating life of around 14 hours before requiring a recharge of four hours at fast charge rate. Spare rechargeable battery packs are available, as is a battery holder to facilitate use of dry cells if desired.

The Australis 26k Scanning Receiver is capable of detecting signals over four adjacent frequency bands, and has the ability to automatically scan through up to 100 transmitter frequencies. This is an invaluable feature when tracking a number of animals. The Australis can also be used in the normal manual mode, if preferred, searching for one transmitter at a time.

Sensitivity: The sensitivity of this type of receiver is often quoted as the minimum discernable signal level. This is subjective and not a reliably measurable level. Therefore, the sensitivity characteristic of the receiver is defined here by specifying the maximum noise figure. This can then be related to the signal to noise ratio for any given bandwidth.

Receiver noise figure: 2dB maximum

Sensitivity for 10 dB S+N/N: -135dBm @ 400Hz BW (0.04 uV into 50 Ohms)

Selectivity: -6dB BW > 400Hz, -60 dB BW < 4.0 kHz

Intermodulation: >70 dB rel. to 10dB S+N/N

Image and spurious: >80 dB rel. to 10 dB S+N/N

Gain control range: 50 dB minimum

Nominal input impedance: 50 Ohms

Frequency range Tuneable to any 4 MHz segment 148 to 174 MHz (149-152 MHz standard)

Frequency selection: 1 kHz steps with fine tuning in 100 Hz steps

Frequency stability: Better than 1 kHz -10 to +60 degrees Celsius

Frequency memories: 10 banks of 10 memories with fine tune offset stored for each frequency

Memory scanning rate: Can be set to 1.25, 2.5, 5, or 10 Seconds (Default 1.25 Sec/Chn)

Memory retention: Memory is retained while the receiver is switched off and while battery packs are changed

Audio output: 250mW into internal loudspeaker or external load

Low battery Indicator

Sig. strength resolution: Approximately 0.1dB

External socket: Data logging & remote control

Case construction: Aluminium sheet fabrication with polyester finish

Sealing: The case design minimises the intrusion of dust, dirt or spray. All external joints are either overlapping or sealed

Display: A graphic type liquid crystal display approximately 18mm x 60mm is used to display all frequency, signal strength and mode data. The display is a 32 x 122 dot array. It has LED back lighting which can be switched on for night viewing.

Volume control: Conventional knob operated potentiometer with On/Off switch. Off is fully CCW position. Gain Control: Knob operated potentiometer. Gain is maximum when the control is fully CW. The minimum gain reduction is 50dB.

Keys: 16 membrane keys are incorporated in the front panel. 0-9, Recall, Save, Scan, Up and Down Fine Tuning, and Light

Antenna input: BNC connector

Headset audio outputs: Two 3.5mm phone jacks, one disables the loud speaker.

Size: Height 50mm x Width 140mm x Depth 170 mm

Weight: <1KG