davidportwain
Active Member
Need advice on suitable antenna for this VHF
ICOM M421 users? GPS input advice please
- Thread starter davidportwain
- Start date
Eeyore
Well-Known Member
Presume you already have GPS? Just 'splice' into that and radio will take position and time from there, no additional antenna needed (except for the actual VHF part of it!)
davidportwain
Active Member
Old GPS sends the wrong (old) style signals. Need separate dedicated antenna. Mixed messages from ICOM & chandlery. i.e they dont know what'll work.
Eeyore
Well-Known Member
OK.
For what it's worth...my M421 is connected to a Garmin 128 (reasonably cheap to buy) and works fine. Boat next door has his connected to a Standard Horizon 3000i chart plotter with equally good results.
For what it's worth...my M421 is connected to a Garmin 128 (reasonably cheap to buy) and works fine. Boat next door has his connected to a Standard Horizon 3000i chart plotter with equally good results.
davidportwain
Active Member
Thanks thats what I want to know
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Goldie
Well-Known Member
If you are happy with your existing GPS receiver, you could add an aerial/receiver unit just to feed the DSC and any future additions such as a chart plotter. expect to pay about £90 for the Icom one.
jeremyshaw
Well-Known Member
We had the same problem and just replaced the main GPS antenna, rather than having two.