ARVA
 
French made and distributed by Climb Axe Ltd
Cost- $299
Weight- 220grams
Single antenna
Batteries- 4AAA, 250 hrs in transmit mode.
Range- up to 60m (field tests may indicate less).
Distance Display- LCD displays in meters. (Back lit)
On/Off Switch- Unit is switched on by attaching shoulder strap, automatically transmits.
Search mode- by pulling out on the large red search switch.
Revert to transmit mode- this is accomplished by pushing in the red search button.
Harness- the harness is attached with a torso strap and a shoulder strap.
 
SPECIFICATIONS:
 
The primary indicators are visual based (digital), but there are also audio indicators which, vary in pitch.
 
Instead of using volume, it uses a change in pitch and frequency of beeps. A digital display gives an approximate distance from the transmitting beacon. Within 10 meters, the signal is processed digitally and displayed. The distance display is often inaccurate and rarely points to the sending unit, but rather is an approximate distance along the lines of flux. Distance and direction are affected by the orientation of the sending beacon and receiving units, and also by battery strength of the sending unit. Precision improves as the distance between the units decreases.
 
Usable range in the field is substantially less than specified. It has been reported that experienced users often have difficulties when they first use the ARVA 9000, while beginners are much faster. The user will experience blanking of the display and inaccurate range. This is due to a sampling rate between 50 and 100 times per minute. By slowing the search and using the tangent method, this is avoided. Users may also become so focused on the digital display that obvious clues are missed on the surface of the snow. It's important to read the manufacturers instructions on the operation, recommended search methods and care, as each beacon is different.