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VHF Hi.. I am in need of the schematic for my dead "aurora" VHF from West Marine. THanks for the help..-R

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Check chokes in the DC supply rail
check the reverse Polairity protection diode.
If there is a Micro P, check the clock signal on the CPU

Posted on Nov 11, 2008

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Radio not receiving on any channel


Hi Mike,

The manual for this radio (in Adobe .pdf format) is available for download directly from Icom America, free of charges.

Since the "AquaQuake" function works and you do hear static when the squelch is off, that is sufficient to let us know that the voice coil of the speaker is functional and should produce sounds with the right signal applied.

The first thing to determine is if you're close enough to another operating transmitter for the radio to receive a signal. One of the 10 weather channels the radio is capable of tuning should be close enough produce some intelligible audio from the speaker - assuming the squelch setting isn't set too high.

If a WX channel works, then you'll need to see if there's a VHF Marine band transmitter operating nearby. You might need to set another Marine band radio receiver up to verify that there is indeed a signal present on the particular Marine band channel that you're monitoring. A list of frequencies is published on pg 27 (of the manual linked above) in case you need to convert between channel and frequency to tune on a non-channelized radio.

Outside of that, there's little the end user can do without specialized test equipment, schematics and of course, training. Many shops will be happy to provide an estimate for repair when provided with a small bench diagnostic fee. This fee is usually applied towards an authorized repair by most reputable repair shops.

I hope this helps & good luck!

Nov 27, 2012 | Icom Ic-m34 Vhf Waterproof Marine Two-way...

1 Answer

Need an operating manual for a Cobra MR F75 VHF Marine Radio


Howdy from South Texas and Merry christmas.

Here is your link and enjoy the Holidays.

http://cobra.com/downloads/manuals/MRF55_manual-Eng.pdf

Patrick Patterson

Dec 15, 2008 | Cobra MRF55 2-Way Radio

1 Answer

Vhf radio antennae


There's radioworld.ca on Steeles Avenue in Toronto.

Sep 16, 2008 | Motorola Radio Communications

1 Answer

I have a Raymarine VHF marine radio but cannot get channel 37 - why not?


Hi,

To my knowledge, Ch 37 (M1) is used by the UK Marinas and Yacht Clubs, however, the Raymarine Ray45VHF uses the US VHF Marine Radio Channels allocations/standard where there is no Ch 37 (actually no Chs 29-59).

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards.

Thank you for using FixYa

Jun 17, 2008 | Raymarine Ray45VHF (53 Channels) 2-Way...

2 Answers

VHF transmit power


Hi, It is not typical but neither is there a problem with the radio. Transmit Power output is loosely dependent on the: 1. Frequency or channel you are transmitting. Normally, Marine Band VHF are calibrated for max (25 in your radio) at Ch16 or 156.800Mhz; 2. If the SWR of the antenna is not a flat 1.0, power tends to go down; 3. After some time, the TX side of the radio needs to be re-calibrated; 4. Power Supply - some radios will push max output only when powered with 13.8 and tends to go down when used with 12 volts. Hope this be of some help/idea. Post back should you need additional information. Good luck and kind regards.

Oct 04, 2007 | Garmin VHF-725 2-Way Radio

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