OTS's cheapest set is the "SCUBA Buddy" and operates on that frequency exclusively. However that's a very low power set you'd be unlikely to want on a sub. OTS medium power or high power sets have multiple channels:
32.768 upper
32.768 lower
31.250 upper
31.250 lower
I have no idea what frequency Helle uses. My Divelink set is on 31.250 upper.
On Dec 21, 2009, at 10:00 PM, "Jon Wallace" <
jonw@psubs.org> wrote:
>
> The majority of OTS equipment operates on 32.768 khz upper side band.
>
> Jon
>
>
> Hugh Fulton wrote:
>>
>> Can anyone answer as to whether this OTS set-up will talk to Helle >> underwater comms or others?
>>
>> Regards, Hugh
>>
>
>
>
>
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