Galileo Sol Loss of Pressure Signal

[Hatul]

I have a two year old Galileo Sol and had the transmitter replaced for prolonged intervals with loss of signal issues.

With the new transmitter it's better but still in my last two dives there were a few brief loss of signal episodes. Not long enough to lose the pressure reading, but long enough to trigger the Loss of Signal Alarm.

Is this normal?

 

[c5diver]

i have had issues twice, if the computer is on my left wrist and transmitter is on the right hand side of the first stage i would get signal loss, and diving a wreck that had iron ore pellets in pretty large amounts i would get signal loss. i have heard of people putting the transmitter on a 6 in hp hose to help the issue.

 

[Matt S.]

I typically get the LOS alarm 0 to 2 times on a dive. Over the whole dive, there are only a few seconds total where there is no connection. If that is what you are seeing too, I'd call it normal based on my experience.

 

[c5diver]

i have only had a few less than five in 50 dives with the computer

 

[Carlos Danger]

Yep, had the same problem with my Luna.

Scubapro replaced my original Smart Transmitter under warranty with one of the new redesigned units that have the weird battery, which I'm guessing are of a higher output. So far the dropout issues seem to have gone away, but I have read that this same approach did not entirely fix the problem for some owners.

My understanding is that radio signals can have difficulty propagating under water and attenuation (absorption) of the waves is dependent upon a number of factors like the water's conductivity, salt content, temperature, depth, frequency, etc, and can also be disrupted by photographic flash discharge. I guess the bottom line is that RF may not be the best choice for signal transmission in dive computers. There may indeed be better ways to implement wireless AI, but perhaps they are just too price prohibitive right now.

 

[JulesSCUBAPRO]

You may be experiencing a shadow cast by your head or shoulder due to the height of the transmitter as it relates to tank positioning. Make sure the tank is high enough when worn to provide good line-of-sight between the wrist unit and the transmitter. Using a high-pressure QD fitting can aid in accomplishing this.

 

[Hatul]

You may be experiencing a shadow cast by your head or shoulder due to the height of the transmitter as it relates to tank positioning. Make sure the tank is high enough when worn to provide good line-of-sight between the wrist unit and the transmitter. Using a high-pressure QD fitting can aid in accomplishing this.

You may be right. In the last dive when I had all those brief cutouts I was swimming though lots of rocky narrow swimthroughs (Shaw's Cove in Laguna), so this may have interfered with line of sight.

Can you tell me if there was a change in the design of the wrist unit to make the receiver more sensitive or dependable?

 

[ontdiver]

I experienced similar loss of signal problems with my Luna and you'll find several threads about this issue. My understanding is that they had a bad batch of transmitters.

 

[Nick Ruberg]

I remember reading somewhere that strobes can also cause this. I have a Luna and had this happen a couple of times. Didn't bother me much because 10 seconds later it came back.

 

[zf2nt]

I complained to Scubapro Technical Services multiple times about my loss of signal problems with my Galileo. Each time, they asked if I had a dive light or a strobe, and of course the answer was always "yes". I always have either a big light or my camera when I dive. This explanation did kind of make sense to me, because I understand that in the process of generating HV DC from a 3VDC battery I know you have to drive a square wave generator and that can generate a lot of RFI. I sort of lived with the problems for a couple of years and then this last fall I got a Light & Motion 2000S/F light. I use this with my camera when I'm shooting video, and also use it on my wrist when I just want a light. I have not had one single loss of signal on the Galileo since I got that Light & Motion light! It's in a metal case, and I'm sure is much more shielded than either the UK light I used to use or the strobe I have on my camera. It really has been a dramatic change.