[PSUBS-MAILIST] 2019 Flathead Lake Expedtion

Tue May 14 22:06:40 EDT 2019

That's an interesting find! Remember also that if you are using OTS comms,
there is a line out. If you used it, you will record the audio of both sub
pilot and surface controller. It can be done with something as simple as a
smart phone. I'm not suggesting replacing the separate log, but it would be
a great thing to have the comms track for video production.

Those science objectives are written 100% in the language and style of
marine ecology text books, which is to say they're a reading comprehension
quiz, but I do like the content. They're going to end up making citizen
scientists out of us underwater mechanics.

Best,
Alec

On Tue, May 14, 2019 at 7:27 PM David Colombo via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

> Great idea Cliff. Sure wish I had one when on the bottom of Lake Tahoe.
>
> Best Regards,
> David Colombo
>
> 804 College Ave
> Santa Rosa, CA. 95404
> (707) 536-1424
> www.SeaQuestor.com
>
>
>
> On Tue, May 14, 2019 at 10:31 AM Brian Cox via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
>> I love it !    Captain's log star date ....    alien octopus attacking
>> ship..          I used to have a really good quality Sony voice recorder
>> that would store 72 + hours of audio,  with a SD card I think you could
>> extend the storage.
>>
>>
>>
>> Brian
>>
>>
>>
>> --- personal_submersibles at psubs.org wrote:
>>
>> From: Cliff Redus via Personal_Submersibles <
>> personal_submersibles at psubs.org>
>> To: Personal Submersibles General Discussion <
>> personal_submersibles at psubs.org>
>> Cc: Jim Craft <jim.craft at umontana.edu>
>> Subject: Re: [PSUBS-MAILIST] 2019 Flathead Lake Expedtion
>> Date: Tue, 14 May 2019 16:21:49 +0000 (UTC)
>>
>> Dr. Jim Craft, the Science Point for the Expedition from the Flathead
>> Lake Bio Station (University of Montana)  has drafted the 2019 Flathead
>> Lake Expedition science objectives(attached).  Jim has the surface crew and
>> psub boat captains documenting any observations we will make during the
>> dive.  Surface crew will be recording data such as GPS location, depth,
>> altitude of subs, and documenting an comments crew makes.
>>
>> For the R300 I have been experimenting with different ways to come up
>> with an Audio Captains Log kind of like what Captain Kirk uses on the USS
>> Enterprise!  I tried a number of cheap Chinese audio recording devices and
>> was just not happy with ease of use and audio quality.  I was looking for a
>> KISS easy to use device that would sit in the background and record MP3
>> files and if not in use, go into sleep mode to get long battery use.  After
>> a few tries, I found a unit that is working great.  It is built in Korea.
>> The device is the MQ-L500 150 Voice Activated Recorder from MEMOQ.  These
>> come up on Ebay all the time at $90.
>> https://www.ebay.com/itm/MQ-L500-Power-Bank-Audio-Recorder-Hidden-Spy-Voice-Activation-Recording-Device/153122811398?epid=17024703124&hash=item23a6d4ae06:g:q~8AAOSw51xbYgyE
>>
>> The unit is build solidly with dimensions of  3.5", 1" .75" and weighs
>> about as much as a roll of pennies and is about the same size so has a nice
>> solid weighty feel.  Only has a roll switch that has positions of off,
>> continuous mode or intermittent mode and a switch to display the battery
>> level.  It came with a small magnet which I replaced with a larger one that
>> I epoxy-ed to the device. This make it easy to attached it to the interior
>> hull.  In the voice activated mode, the unit will record for an amazing 150
>> days.  In continuous mode, it will record for 14 hours.  To charge and
>> transfer MP3 sound files to your laptop you use a USB cable that is
>> provided.  In continuous mode it records in 5 hour segments.  The files are
>> date and time stamped so it makes it easy to document when an event
>> occurs.  Because the recording is to a solid state memory chip this unit
>> also serves the role of cockpit voice recorder (CVR), in the event someone
>> every had to do an accident investigation.  The unit has a built in mic so
>> it will record when using either surface comes in VHF or underwater comms
>> like OTS gear without having to plug these units into the recorder.
>> Something to consider.
>>
>> OAS, we still have one cabin with three beds available at the Flathead
>> Lake Bio Station (FLBS) where we will be using as a base station for the
>> week (Aug 5-9) if anyone is considering coming.  If anyone needs more info
>> on the cabins, let me know and I will provide.
>>
>> Cliff
>>
>>
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