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[hank pronk via Personal_Submersibles]

 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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