[R-390] OT: Question re: speaker mic for walkie-talkie

[Jim M.]

Use Google - enter the radio make and model - you will see some for sale, 
maybe parts.  Could by a complete non working radio for parts.


----- Original Message ----- 
From: "Barry" <n4buq at knology.net>
To: <r-390 at mailman.qth.net>
Sent: Saturday, June 09, 2007 12:13 PM
Subject: Re: [R-390] OT: Question re: speaker mic for walkie-talkie


>> Sorry for the OT post, but I looked in the CB newsgroup and it is truly a
>> cesspool.  I'd rather not post there.
>>
>> I have a yard-sale CB walkie-talkie that my mom gave me several years 
>> ago.
>> I thought it had major problems, but I discovered last night that the
>> internal speaker/mic isn't working.  It works (kind of) with an external
>> speaker connected and I still need to see if it modulates with an 
>> external
>> microphone.
>>
>> The question I have is if there is anything special about the speaker
>> design in this thing?  Is it likely that the internal speaker is just an
>> ordinary speaker and it is supposed to function (probably poorly) as a
>> microphone as well or is the speaker specially designed to handle
>> microphone duty as well?
>>
>> I'm hoping the speaker isn't really shot but that it might just be
>> connections gone bad, but I may end up having to replace it to get this
>> thing working again.  No, I don't really intend to get on the CB bands 
>> and
>> do anything with it beyond testing it.  I just like to tinker with things
>> like this.
>>
>> It's a Lafayette Dyna-Com 23 with the owner's manual copyrighted in 1976.
>> It's a pretty ruggedly made unit and I don't want to trash it (nice, long
>> sturdy internal antenna).  Any help with the speaker/mic issue would be
>> greatly appreciated.
>>
>> Thanks,
>>
>> Barry - N4BUQ
>
> The speaker is 2-3/4" diameter, 100-ohms.  Anyone know where I might find
> one?  I've found 2-1/4", 100-ohm and 2-3/4", 8-ohm (would probably work 
> well
> enough but...), but not the right combination so far.
>
> Thanks,
>
> Barry - N4BUQ
>
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