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[hank pronk via Personal_Submersibles]

 Sean,  now that mention that, I have a battery  powering the electric motor connected to the radio with a power converted that converts 12v to 24 v.  I just asked my wife if they were motoring while talking and they may have been.  That means there could have been a voltage drop to the radio.  Could that be the culprit?  Hank
    On Thursday, January 10, 2019, 12:00:01 PM MST, Sean T. Stevenson via Personal_Submersibles <personal_submersibles at psubs.org> wrote:  
 
 I'm suspecting the available transmit power of the surface unit as the culprit here.

Sean



-------- Original Message --------
On Jan 10, 2019, 11:46, hank pronk via Personal_Submersibles < personal_submersibles at psubs.org> wrote:


 Sean, on 27 kHz the radio is crystal clear but at 225 feet, the surface radio can hear me clearly but in she sub it was very clear but super quiet.  I am assuming that I need to get onto the 10khz side for range.  Unfortunately Gamma came with the wrong paperwork for the come.  I ended up with Delta's paperwork and the radios are different.  The link you sent shows a very similar radio and it says 3km for the 27 kHz side, so this makes me wonder if I have a simple problem with my 27 kHz side.  I have no clue if it is strait frequency.  I can look in my paperwork to see if there is anything at all.Mine has a pinger alsoHank
    On Thursday, January 10, 2019, 10:11:27 AM MST, Sean T. Stevenson via Personal_Submersibles <personal_submersibles at psubs.org> wrote:  
 
 This would be the direct successor to your unit:

https://www.subsea-import.com/subphone-580---580tx.html

Sean




-------- Original Message --------
On Jan 10, 2019, 09:53, hank pronk via Personal_Submersibles < personal_submersibles at psubs.org> wrote:


 Sean,I have a radio in the sub and a matching radio in the boat.  Yes it is 9khz  and probably very old school.Hank
    On Thursday, January 10, 2019, 8:32:42 AM MST, Sean T. Stevenson via Personal_Submersibles <personal_submersibles at psubs.org> wrote:  
 
 A few questions:

1) Who are you communicating with / what is the hardware on the receiving end?

2) I presume you meant to type 9 kHz instead of 9 Hz? 9 Hz would be infrasonic and require an immense amount of power to transmit, in addition to not having sufficient bandwidth for voice comms. 9 kHz, on the other hand, still doesn't sound like a standard comms frequency. Human hearing covers 20 Hz - 20 kHz. 9 kHz would be audible, not ultrasonic. Active sonar transducer perhaps?

Sean


-------- Original Message --------
On Jan 9, 2019, 18:01, hank pronk via Personal_Submersibles < personal_submersibles at psubs.org> wrote:


 Sean,I have no clue what the wattage is.  These are the original coms that came with Gamma, they are rack mount.  The picture shows a spare 27 and the big one is a 10 hs but I need 9 hzhank
   ----- Forwarded Message ----- From: hank pronk <hanker_20032000 at yahoo.ca>To: hank pronk <hanker_20032000 at yahoo.ca>Sent: Wednesday, January 9, 2019, 5:58:41 PM MSTSubject: 
 



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