Avalanche transmitter technology has been around since the 1970s with very little core improvement other than cost reduction.
The main change in recent years has been the rise of digital receivers with little arrows and LED read- outs which make operation of these systems more user-friendly for those who rarely use them.
Though many of the receivers are now digital, the signals are still analog, and they all operate on the same frequency (457 Khz) which means any avalanche transmitter can work with any avalanche receiver, regardless of manufacturer.
The 457 Khz frequency is an international standard that was put aside for rescue devices in 1968. This relatively low frequency (just below the AM dial on a radio) was chosen for rescue work because the signal is relatively unobstructed by walls, concrete, snow, ground, and human bodies, etc.
Could this tech be used for locating a terrier? Perhaps. It’s simply a question of transmitter size and locator accuracy.
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