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Old 03-04-2014, 08:10   #1
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ic 402A Radio connection GPS

i have ic 402A Radio with DSC function I need connect my IC 402A to my Raymarine C120W using a RCA cable to 26 guage wire harness on my C120W
Has any one done this?
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Old 03-04-2014, 08:39   #2
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Re: ic 402A Radio connection GPS

What's the problem?

If it's a connection one, I'd suggest:

1. Use a small terminal strip to connect the two AWG26 wires from the GPS output;

2. Connect the shield from the RCA cable to the ground side on the little terminal strip; and

3. Connect the center conductor of the RCA cable to the NMEA in side on the little terminal strip.

That should do it.

Bill
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Old 03-04-2014, 18:01   #3
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Re: ic 402A Radio connection GPS

thank you yes conecting 26 guage wire to RCA plug would that be better soldering wires together?

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Old 04-04-2014, 07:45   #4
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Re: ic 402A Radio connection GPS

Quote:
Originally Posted by COLINFLTENG View Post
...I need connect my IC 402A ...using a RCA cable to 26 guage wire harness ...Has any one done this?
Yes, I just made such a cable. I used a standard Switchcraft pre-molded RCA pin plug cable. At the non-connector end, I just soldered on some smaller gauge wires to the rather stout shield and center conductor of the Switchcraft cable, and covered the joint with heat shrink tubing.

I have developed a very simple method of interfacing NMEA-0183 devices. See

continuousWave: Whaler: Reference: Universal NMEA-0183 Interface

After you make the electrical connection between your chart plotter and the ICOM IC-M402A radio, you may find the radio is fussy about what NMEA sentence is sent to it. I have a model 402, and it would only recognize $GPGGA as a valid sentence.
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Old 04-04-2014, 12:01   #5
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Re: ic 402A Radio connection GPS

Do you picture of modified harness RCA one end other connected to 0183 wire

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Old 04-04-2014, 12:12   #6
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Re: ic 402A Radio connection GPS

Quote:
Originally Posted by COLINFLTENG View Post
Do you picture of modified harness RCA one end other connected to 0183 wire
Yes. I have made this image available:

http://continuouswave.com/whaler/ref...ace513x348.jpg

The Switchcraft RCA pin plug cable is on the lower right.
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Old 05-04-2014, 07:39   #7
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Re: ic 402A Radio connection GPS

Oops--I am afraid the link I gave above won't work (and I can't edit it). You can see the ICOM cable connection in

continuousWave: Whaler: Reference: DSC Distress Test

in the image with the caption

"The NMEA signals are interfaced between devices...."
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Old 05-04-2014, 13:15   #8
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Re: ic 402A Radio connection GPS

Great information my Chart plotter does have GS ot CP before sentences it does send GGA I will connect via connecting RCA and C120W harness and test out

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Old 05-04-2014, 14:33   #9
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Re: ic 402A Radio connection GPS

buy an rca cable. cut one end off. connect wires to plotter
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Old 05-04-2014, 15:55   #10
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Re: ic 402A Radio connection GPS

I have RCA cable need connect it plotter harness going termial block

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Old 06-04-2014, 06:15   #11
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Re: ic 402A Radio connection GPS

The ICOM IC-M402 radio is an older model. I recently rehabilitated my own c.2001 M402 radio. In the process, I discovered a number of unusual settings and features, which I described in

ICOM IC-M402: Rehabilitating an older VHF Marine Band Radio - Moderated Discussion Areas

You might find that information to be of interest to you, particularly the modification I made to the microphone, which made an enormous improvement in the frequency response and sensitivity of the microphone.
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Old 06-04-2014, 09:58   #12
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Re: ic 402A Radio connection GPS

That is great information thank you for all recording of data Thanks again

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Old 07-04-2014, 20:52   #13
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Re: ic 402A Radio connection GPS

I have tried connecting C120 W port 1 and port 2 did not work

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Old 07-04-2014, 21:00   #14
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Re: ic 402A Radio connection GPS

Need to figure out which port to use on my C120W 0183 harness

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Old 10-04-2014, 22:12   #15
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Re: ic 402A Radio connection GPS

doesn't matter. output of 1 or 2, to input of the radio. set plotter port to 4800baud nmea if it's not ( should be default)

only 2 wires to connect. try both ways. no harm done the wrong way. one way should work.
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