[ICOM] IC-2100 audio

[w4upd]

Some of the radios did not exhibit the speaker crackle, only the over 
the air crackle. The HM-98S was the mike released on the 2100. However, 
later models or last production models may have the HM-133 since it 
appeared on the 2200 and 2300 afterwords. I frankly didn't like the 
HM-133 especially mobile hence why I changed my 2200 to the HM-98. There 
are many of these rigs out there, you could always ask to borrow 
someones mike to see how it performs on your rig. I know of people here 
with the 2200 and 2300 had similar problems and changed the mike and the 
problem seem to go away.

Sorry, that's about all the suggestions I can come up with. A mike swap 
is probably the best way to determine whether it is the mike or radio.

Reid, W4UPD



On 4/26/2015 9:20 AM, Mike Reublin NF4L wrote:
> Reid -
> I'll try the re-tightening thing. In the article you reference, it lists one of the symptoms as a crackling in the speaker. I don't have that. Does that alter your diagnosis?
>
> On your FTP site, all the files are for Windoze except the manual. I use a Mac, and I have no idea what the .exes are for, so I'd be hesitant to run them
>
> I'd like to know for sure if it's the mic or not. As I said in the previous post,  I had already swapped the mic cord end for end and also re-crimped the RJ45s.
>
> The HM-133S came packed with the radio which I bought new.
>
> 73, Mike
>
>> On Apr 25, 2015, at 4:08 PM, w4upd <updwrb at bristor-assoc.com> wrote:
>>
>> Doesn't matter. There can be corrosion or dirt. I would back off the screws about 1/2 turn and re-tighten. Use the following URL to check on possible solution:
>>
>>     http://www.hampedia.net/icom/ic-2100h-crackle-on-transmit.php
>>
>> Also go to my FTP site:
>>
>>     ftp://ftp.bristor-assoc.com/pub/Amateur/Icom/
>>
>> and look at the files listed related to the 2100. Maybe they will help.
>>
>> If microphone, I would try swapping cord ends and see if it persists.
>>
>> Reid, W4UPD
>>
>>
>>
>> On 4/25/2015 3:56 PM, Mike Reublin NF4L wrote:
>>> Thanks, Reid.
>>>
>>> I don't turn up anything online. The board screws are really tight, not even a hair movement. I had already swapped the mic cord end for end and also re-crimped the RJ45s.
>>>
>>> Mike NF4L
>>>    
>>>> On Apr 25, 2015, at 1:00 PM, w4upd <updwrb at bristor-assoc.com> wrote:
>>>>
>>>> Certain runs of the IC-2100 are known to have these problems even fresh from the factory. Usually it is the early models, but any of them can do it. I would check on line for the fixes. They usually entail opening up the unit and tightening the PC board mounting screws. Adding a ground strap to a couple of the screws and the case ground. I'd say about 90 - 95% of the time this remedies the problem. Otherwise the 2100 is not a bad rig especially for mobile and I like the old HM-98 mike with the tone button cover for mobile. Also, you might swap the RJ45 mike connectors around on the mike. Both ends of the cord are the same.
>>>>
>>>> Reid, W4UPD
>>>>
>>>> On 4/25/2015 12:51 PM, Mike Reublin NF4L wrote:
>>>>> The IC-2100 is my desktop rig, never been mobile. I get frequent reports of broken crackly audio that sounds like an intermittent mic cord. I've put the cord in a tester and wiggled and pulled it, with no indication of fault. Anybody have any hints or kinky about solving this?
>>>>>
>>>>> Is there a possibility of a problem with the jacks in the mic or the rig?
>>>>>
>>>>> 73, Mike NF4L
>>>>>
>>>>> ----
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>>> ----
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>> ----
>> Your Moderator: Dick Flanagan K7VC: icom-owner at mailman.qth.net
>> Icom Users Net: Sundays, 1700Z, 14.316 MHz
>> Icom FAQ: http://www.qsl.net/icom/
>> To support QSL/QTH.net: http://www.qsl.net/donate.html
> ----
> Your Moderator: Dick Flanagan K7VC: icom-owner at mailman.qth.net
> Icom Users Net: Sundays, 1700Z, 14.316 MHz
> Icom FAQ: http://www.qsl.net/icom/
> To support QSL/QTH.net: http://www.qsl.net/donate.html
>
>
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> Version: 2015.0.5863 / Virus Database: 4334/9631 - Release Date: 04/26/15
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