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[aprssig] more kayak and aprs

Jan T. Pharo la2bba at jpharo.net
Sun Aug 31 13:46:48 UTC 2008


"Kurt A. Freiberger" <kurt at badgers-hill.net>, Sat, 30 Aug 2008
10:50:53 -0500

>Could the buoy that Bob was playing with be modified to fit?

Hi Kurt;
you are asking me about that? But what should it fit into/with? I
can't see which part of my answer to jimlux' question you are
referring to.

73 de Jan, LA2BBA

(I let the rest quoted below, so someone maybe can see what I didn't)
>
>Jan T. Pharo wrote:
>> jimlux <jimlux at earthlink.net>, Thu, 28 Aug 2008 05:42:45 -0700
>> 
>>> So, another approach to the desire to
>>> a) know the position of the kayak
>>> b) get it to something like FindU
>>>
>>> is to get a marine VHF radio with DSC (which can send a GPS position) 
>>> for the kayak, and set up a DSC receiver in the car, tied to a APRS 
>>> transmitter.
>> 
>> You will probably have the same problem with the marine VHF (160 MHZ)
>> as with your 145 MHz amateur equipment: same frequency (2m), same wave
>> distribution properties.
>> 
>> The signals from a 5W handheld marine trx won't reach your car unless
>> the 5W handheld amateur trx does the same.
>> 
>> calls with position om marine channel 70 will probably reach the
>> coastal station, but won't be retransmitted from there unless it's a
>> distress signal (AFAIK from being a marine VHF user). So there might
>> be practical issues in addition to the possible legal ones.
>> In the area you're talking about, is there a hilltop digi which cover
>> the area where you will be navigating? In that case, your amateur APRS
>> signals will be digied from there and reach (1) your car; (2) all APRS
>> stations within hearing range of the digi, most probably also some
>> Igate.
>> 




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