Mike1967
Contributor
The tool that came with my Perdix is too thick to fit into my TX slots.
Overtightened transmitter battery cap
- Thread starter Marie13
- Start date
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The Quarter was dual purpose. It was for battery removal and for changing the settings of the computer. It had 3 metal contacts on the side (NOT Buttons) and you had to bridge two contacts at a time with the Quarter to move from one screen to the next. Bridging the contacts with a wet finger let you edit the settings.
The computer was near indestructible and a single battery would last about 10 years. I had two of these and they were great for about 12 years until they finally died. One from a bad sensor, the other from a failed LCD.
I had a Cochran Commander Air (bricked) and still have a EMC-20H (wife took it over when I went to a Shearwater for primary and back-up).....
Dead man's switch.
Hijack -
In around '93 I got the Commander Air as my first PDC. Used Navy tables and then the Wheel before that. It was one of the few computers that refused to lock you out, no matter how bad a decision you could try and make. It just kept spitting out a solution...
Great PDC! Typical clunky software and interface from the 80's-90's. Thing is, they never changed with the times. Military contract was their bread and butter, us recreational folks were not really of interest. That PDC bricked when it sat for an 8 year surface interval. They gave me an unbelievable trade-in/trade-up so I got the EMC-20H. Still the clunky interface, and horriffic sortware.... SW caught me in a weak moment with a Petrel, and the rest is history. Wife wanted it so she uses it....
Was sad to see that company go down....
Back to the thread...
In around '93 I got the Commander Air as my first PDC. Used Navy tables and then the Wheel before that. It was one of the few computers that refused to lock you out, no matter how bad a decision you could try and make. It just kept spitting out a solution...
Great PDC! Typical clunky software and interface from the 80's-90's. Thing is, they never changed with the times. Military contract was their bread and butter, us recreational folks were not really of interest. That PDC bricked when it sat for an 8 year surface interval. They gave me an unbelievable trade-in/trade-up so I got the EMC-20H. Still the clunky interface, and horriffic sortware.... SW caught me in a weak moment with a Petrel, and the rest is history. Wife wanted it so she uses it....
Was sad to see that company go down....
Back to the thread...
DIVEWATCHDOCTOR
Contributor
The way to open the transmitter is not the destructive one (you risk damaging the threads in the cap which would only escalate the problem). It's better to drill two 180° opposite small holes in the cap and then use a spanner wrench to unscrew it. We have open many "condemned" caps in transmitters and some Suunto Mosquitos. In many cases, by using a manual vise and drilling by hand you can prevent going all the way through the plastic cap and get to reuse it. Of course, a waterproof test would be required to check that the weakened cap can still withstand the water pressure at depth.
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