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Marco Flamingo



Joined: 09 Jul 2015
Posts: 1154
City/Region: Seattle
State or Province: WA
C-Dory Year: 2004
C-Dory Model: 16 Cruiser
Vessel Name: Limpet
Photos: Limpet
PostPosted: Wed Aug 17, 2022 10:42 am    Post subject: Reply with quote

zuunami wrote:
we got the SH GX4200


I assume you mean GX2400.

Before you go looking for an external speaker on a small boat, check out this feature. If the transmission seems weak or quiet, hold the microphone to your ear. Some SH radios use both the internal speaker and the microphone to transmit. We turn ours down and then listen to most transmissions with the mike. Makes it possible to have a discreet civilized conversation. Over.
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ssobol



Joined: 27 Oct 2012
Posts: 3362
City/Region: SW Michigan
State or Province: MI
C-Dory Year: 2008
C-Dory Model: 22 Cruiser
Vessel Name: SoBELLE
Photos: SoBelle
PostPosted: Wed Aug 17, 2022 12:10 pm    Post subject: Reply with quote

CC Rider wrote:
FYI, if the boat is not moving then the GPS system in the radio has no idea as to what direction the boat is (not) travelling (pointing).

GPS direction is dependent on obtaining a position, temporarily storing that position, getting a second position and comparing the new position to the old in order to get a direction of travel. It's likely much more complicated than this simplistic explanation, but suffice it to say that if you are not moving, it has a difficult time computing direction. (It's not really a compass at all).

This may be the problem you are experiencing with the boat at rest?


Or you could get a GPS receiver with a heading sensor. Such as:

https://www.lowrance.com/lowrance/type/sensors-networking/point-1-gpshdg-ant-module-lowrance-pk-60d42cf5/
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