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Icom 502 question

Old 04-03-2003, 05:45 PM
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Default Icom 502 question

Just had an Icom 502 professionally installed in my boat with a new digital 8' antenna mounted on the hardtop.

I can receive and transmit to others fine as far as I can tell. Reception is clear and others say transmission is fine.

However, when tuning to the weather broadcast on my radio it has reception that is constently broken up. To hear it broadcast consistently I have to adjust the squelch to a gain settting with virtually contant noise. I broke out my standard Horizon 350 handheld Vhf and I get the weather channel with no problem at the same time. Very clear and easy to hear. It is a little better on the 502 when I have the attenuator feature off, but still not as clear as it should be. Otherwise it seems fine.

Any opinions on this?

Thanks,
Ben
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Old 04-03-2003, 05:54 PM
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Default Icom 502 question

Have you tried changing the weather channel? There are about 6 weather channels. If your radio scans to the first channel and it has enough signal it may stop there, but the strongest signal for your area may be on another channel.
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Old 04-04-2003, 03:53 AM
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Default Icom 502 question

that was my thought too, there's more than one wx channel, and you're probably hearing one that is 200 miles away. Leave then attenuator off, that takes away from your rx sensitivity.


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Old 04-04-2003, 04:07 AM
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Default Icom 502 question

I have 10 weather channel stations, but only Channel 1 comes in on either of my radios. They were both set to the same station. I thought the same thing that you guys mentioned, but it doesn't seem to be the case.

Maybe I'll contact Icom, but I wanted to run it by you guys first.

Thanks,
Ben
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Old 04-04-2003, 06:21 AM
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Default Icom 502 question

If you can pick that same station up with a handheld and not with your new radio setup - then you definately have a problem somewhere. I would suggest that you get an adapter (a pl259/bnc connector) and attached the big antenna to the handheld and see what happens. If that receives fine then you probably have a radio problem. Good luck. Let us know what you find out. I'm scratching my head on that one.

Jay
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Old 04-04-2003, 10:53 AM
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Default Icom 502 question

This morning went down to the boat at the marina and fired up the VHF and tuned into weather channel one. It came right in without any problem on the main unit. I had reception where I was fishing yesterday, but it kept coming in and out while the handheld was fine.

I think I'll just keep an eye on it. Seems to be working fine now.

Ben
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Old 04-04-2003, 12:12 PM
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Default Icom 502 question

Called Icom a little while ago.

Customer service guy who is also a Ham radio operator says the antenna on my boat has a much higher gain than my "rubber duck" antenna on my handheld and that interference was probably coming from near where I was fishing and perhaps intermittently blocking the signal.

He did not think that there was a problem with the radio or antenna as I can broadcast and receive signals.

I'll pay closer attention to it the next time I'm out and see if certain areas create a problem.

Ben
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Old 04-04-2003, 02:19 PM
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Default Icom 502 question

Thats EXACLTY what it probably was. Was there a large boat with a very high powered radar near you or a radio staion antenna... or a Coast Guard staion with a strong transmitter (talking on another channel...)..... Coulda been alot of things.

BUT, make sure you check it at the dock, when it seems to be working OK, turn EVERYTHING on your boat that you use while fishing (livewell, am/fm radio, trolling motor...whatever) and make sure it is still ok. Possibly something else on your boat was causing the problem.

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