[Motorola] MT1000 antenna problem

[kb0nly]

This is a very common problem on the Genesis series of radios.  The usual 
problem is a broken solder joint where the contact from the antenna jack 
solders to the top left corner of the circuit board just below the antenna 
jack.  Remove the two back screws, the ones that hold the belt clip if you 
have one.  Then remove the two small screws on the bottom, NOT the ones that 
hold the battery contacts they don't have to be removed.  After removing 
those four screws remove the front cover of the radio, then unplug the flex 
to the speaker/mic in the front cover.  Next thing to do is just slide the 
guts out of the case.

Once you have the guts out you need to remove the back shield, just remove 
the screws holding the shield and remove it, on some there is a small metal 
spacer at the bottom end under that shield, you will see what i mean if 
yours has it.

Now for the repair.  Make sure the nut on top of the radio surrounding the 
antenna connector is tight.  Then check the pin to the circuit board, if the 
solder is cracked just reflow with some new solder and your set.  Sometimes 
the pin breaks, if that happened use a small piece of resistor lead to 
bridge the gap and solder it.  I have done a more extensive repair that 
involves removing the board from the frame and installing a short piece of 
flexible wire in place of the stock pin, this works really good as well but 
takes a lot more time and fiddling around to further dissasemble it.

The most common cause for this is pulling the radio off your belt by the 
antenna, picking it up off the table or out of the charger by the antenna. 
It flexes that connection and eventually breaks it.

73,

Scott



----- Original Message ----- 
From: "Dennis Wade" <sacramento.cyclist at gmail.com>
To: <motorola-Radios at yahoogroups.com>; <Motorola-User at yahoogroups.com>; 
"Discussion of equipment manufactured by Motorola" 
<motorola at mailman.qth.net>
Sent: Monday, September 24, 2007 12:37 AM
Subject: [Motorola] MT1000 antenna problem


> Good evening,
>
>      I've noticed that when I move the antenna around on my MT1000
> VHF, I can vary the signal strength, leading me to believe that there
> is a loose connection at the antenna.  I haven't been able to locate a
> manual for this thing.
>
>      Could someone walk me through disassembly of the radio to the
> point that I can examine the connection from the antenna to the RF
> section?  I'd hate to loosen the wrong screws.
>
>       Anyone have a similar problem?
>
> -- 
> Dennis L. Wade
> KG6ZI
> Carmichael, CA
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