Can't receive VHF channel 78 - SailNet Community
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post #1 of 15 Old 08-17-2010 Thread Starter
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Can't receive VHF channel 78

My Raymarine 53 Vhf radio broadcasts on all channels and seems to receive on all except 78, which the local RC uses to commnicates with racers. I have written Raymarine asking, "What should I do to get the radio to receive channel 78?" but haven't treceived a response.
Do you have any suggestions? I can purchase a NOS Raymarine 53 Vhf radio on Ebay for $100, which is cheaper than having Raymarine fix it.
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post #2 of 15 Old 08-17-2010
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If it were mine (and not under warranty) I'd replace it.
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post #3 of 15 Old 08-17-2010
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Make sure your radio is set for USA channels and not INT (international). INT channel 78 is a duplex channel. USA channel 78 is actually designated as 78A and is simplex.

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post #4 of 15 Old 08-17-2010
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What Eric said. On many radios it is very easy to get in/out of US/international modes accidentally, and the indicator is usually a very small "US" or "INT" that looks like a flyspeck. Without the manual, you may never find the secret keystrokes to do it.
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post #5 of 15 Old 08-17-2010
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Raymarine is not the quickest at email communication, give them a call or see if the manual is available online. I have called Raymarine and had my question answered in minutes.

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post #6 of 15 Old 08-17-2010
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Quote:
I have written Raymarine asking, "What should I do to get the radio to receive channel 78?" but haven't treceived a response.
Perhaps they responded on channel 78...

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post #7 of 15 Old 08-18-2010
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The Manual is available online ... solves your problem?

http://www.raymarine.com/SubmittedFi...AY53DSCVHF.pdf
from the manual ...
"6) MON/ 1/25 Key5) WX/INT key
-. When WX/INT key is pressed and released, Alarm 1 is heard and Working CH
/Weather CH are toggled each other.
-. When WX/INT key is continued to be pressed for more than 2 seconds, Alarm 1 is
heard and frequency selection mode(US,International or Canadian) can be
changed. There are 3 types of frequencies selection modes,US,International and
Canadian. The frequencies selection mode is changed like USA--��CAN--��INT.
-. While the monitor operation is in use,Dual monitor and Triple monitor can be
changed."

on International, CH 78 sends at 156.925 and receives at 156.875 !!!
on US mode, CH 78 sends and receives at 156.925

sounds like you've got it in international mode and need to switch to US mode by using the WX/INT key

Last edited by RonRelyea; 08-18-2010 at 10:15 AM. Reason: update
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post #8 of 15 Old 08-18-2010
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Quote:
Originally Posted by IslanderGuy View Post
Perhaps they responded on channel 78...
Good one!!! That is why I like to hang around Sailnet all day, informative and yet entertaining .


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post #9 of 15 Old 08-18-2010 Thread Starter
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Thank you, Ron. I'll hit the WX/INT this evening.
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post #10 of 15 Old 08-18-2010
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What should the typical range be for a VHF radio
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