[Central-Electronics] D-104 mic problem - Central-Electronics Digest, Vol 76, Issue 3

[Dave Plowman]

Bob
Checking all the connections with a good digital meter was the first thing I 
did, good ground.
I have to believe that the cartridge is bad.
Not being familiar with the 104 I am not sure which cartridge is in the mic, 
I am pretty sure it is the original though.
There are the two leads soldered to the back and the front is like a 
slightly raised cone from something very shiny like a polished metal and 
very thin and it does look like it has been slightly damaged(bent).
I think that there were only two cartridges used, ceramic and condenser, 
which is best.
I would like to keep the mic original and high impedance for my boat 
anchors.
Any ideas on what I have?
Thanks
Dave
W4PBU




----- Original Message ----- 
From: <central-electronics-request at mailman.qth.net>
To: <central-electronics at mailman.qth.net>
Sent: Sunday, September 05, 2010 12:00 PM
Subject: Central-Electronics Digest, Vol 76, Issue 3


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>   1. Re: Help - D-104 mic for CE200V (Robert Nickels)
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> ----------------------------------------------------------------------
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> Message: 1
> Date: Sat, 04 Sep 2010 13:58:20 -0500
> From: Robert Nickels <ranickel at comcast.net>
> Subject: Re: [Central-Electronics] Help - D-104 mic for CE200V
> To: central-electronics at mailman.qth.net
> Message-ID: <4C8296CC.3090509 at comcast.net>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
>  On 9/4/2010 7:45 AM, Dave Plowman wrote:
>> Gentlemen
>> I have been pulling my hair out trying to get a newly acquired D-104 mic 
>> to work with my CE200V.
>>
> Dave, that should work fine, I use the same vintage D-104 on my 100V
> with excellent audio reports.  This was the type of mic that was popular
> at the time the CE rigs were designed, so I'd be sure to test the mic by
> connecting it to an amplifier of some sort and making sure you hear good
> clean audio.  If your cartridge turns out to be defective, do a Google
> search for "D-104 Kobitone" to learn how you can replace it with a <$5
> mic Kobitone element from Mouser.
>
> You have the hookup correct, as you've discovered you do need to make
> sure there is a good ground connection to the outer shell of the mic
> connector.
>
> 73, Bob W9RAN
>
>
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> End of Central-Electronics Digest, Vol 76, Issue 3
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