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Old 02 August 2018, 19:09   #1
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VHF gone haywire

I turn on the VHF - a main set Icom, the Channel is preset to 16 but then suddenly jumps to another random station, gradually the speed of channel change picks up and it constantly swaps channels. If I re-select 16 it starts all over again. Any ideas ? Anyone had this before ?
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Old 03 August 2018, 02:48   #2
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dual / tri watch or scan mode?
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Old 03 August 2018, 03:01   #3
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Thanks - Shiny - no itís totally random switching from channel to channel - all over the place - I want to order a new set but before I do I wanted check it couldnít be the wiring into the set thatís affecting it.
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Old 03 August 2018, 04:11   #4
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I would look very seriously at what SS said.
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Old 03 August 2018, 05:07   #5
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I'd speak to Icom, they are very helpful. One of the top tech guys (Sam??) is a Ribnobbur
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Old 03 August 2018, 07:00   #6
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Salt water ingress into either the first mic or main set, or into the external mic connector on the back of the main set? The salt shorts out the contacts on the back of the pushbutton(s).
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Old 03 August 2018, 07:09   #7
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Thanks chaps. This is random, sporadic changes to the channel and the set refuses to stay on any channel, constantly hopping from one to the other, not running through a scan from top to bottom channel.If I press 16 it stays on channel for a moment then its off again leaping around the channels
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Old 03 August 2018, 07:10   #8
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Which model if VHF is it?
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Old 03 August 2018, 07:20   #9
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iCom M323
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Old 03 August 2018, 07:34   #10
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Ok, so no mic connector on the back of the set.

Does it make any difference if you engage the microphone lock function (page 13 of the manual)?

Try contacting Icom, if you have no joy and are at the 'about to replace the radio, nothing to lose' point then I would open up the first mic first, then the main set and look for water ingress around the pushbutton contacts
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Old 03 August 2018, 09:37   #11
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Thanks Chris - It felt like a short or earth issue, I'll try that before throwing it in the bin. Really appreciate all comments.
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Old 03 August 2018, 15:22   #12
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Quote:
Originally Posted by cgf10 View Post
Thanks Chris - It felt like a short or earth issue, I'll try that before throwing it in the bin. Really appreciate all comments.


Icom might do you a service exchange if you ring them & talk nicely.
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Old 04 August 2018, 03:46   #13
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Quote:
Originally Posted by cgf10 View Post
I turn on the VHF - a main set Icom, the Channel is preset to 16 but then suddenly jumps to another random station, gradually the speed of channel change picks up and it constantly swaps channels. If I re-select 16 it starts all over again. Any ideas ? Anyone had this before ?


I have the same radio 12 months old was switching itself on and off. Sent it Gaelforce who sent it to icom that was 2 months ago still not got a reply or repair. Apparently the returns department are very busy. Had to buy a new one same model, itís working fine at moment but donít expect a quick fix
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