Shearwater Transmitter Issues

[MyBuddy]

Whether it's 30 seconds or two minutes, this may not work at depth. The transmitter measures absolute pressure like a SPG, not relative pressure. At 30 meters the pressure within the 1st stage cannot drop below 3bar.

That’s a good point and a possibility. But I have no way to test at the moment. However when I’ve had the issue at depth probably 60’, I don’t recall anything other than 0 psi being shown on the computer while I was waiting for the transmitter to turn off.

Edit: Keep in mind the transmitter is calibrated to be accurate over a pretty large range up to 4410 psi so it may not be super accurate at the very bottom of the range.

 

[inquis]

The transmitter measures absolute pressure like a SPG, not relative pressure.

No, the two types of measurements are "gauge" and "absolute", and we all know what the "G" in SPG stands for.

 

[Capt Jim Wyatt]

Zoltar Speaks

Shearwater says buy a Swift​

Below is the answer from Shearwater.
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Thank you for getting in touch.

It does sound like you may have been experiencing interference from using two grey transmitters together in this case.
It's always recommended to use a grey and a yellow, or Swifts to avoid signal collision.

The signal is every 5 seconds, so waiting a couple of seconds before turning on the second transmitter may help, however this is not fool proof and you may still experience drop outs.

I hope this helps,