I did something similar, but I used double A batteries and made a 9V pack 
out of 6 of them.
I also kept it external instead of inside.
73
Colin, V A6BKX
----- Original Message ----- 
From: "Gerry Leary" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Thursday, May 12, 2011 5:10 AM
Subject: Re: The TW2 came.


>I modified my TW1 and put a 9 volt battery in it.  I even connected it to
> the right terminal on the plug so that the 12 volt DC would not charge the
> battery.  That way I can use it on field day.
> ----- Original Message ----- 
> From: "Steve Dresser" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Wednesday, May 11, 2011 7:40 PM
> Subject: Re: The TW2 came.
>
>
>> Kevin,
>>
>> If you have any kind of continuity checker, you can figure out which wire
>> goes where with 100% success.  Connect one lead from the checker to some
>> part of the case that you know is ground, such as the outer part of one 
>> of
>> the SO-239s.  Touch the other lead to one of the wires you have connected
>> to
>> the power jack, and whichever one gives you the least resistance is the
>> ground wire.
>>
>> It also turns out that the outer part of the plug is ground, so if you
>> clip
>> one lead to the outer part of the plug, whatever wire gives you 0 ohms
>> resistance is ground.  I've hooked up my TW2 this way without frying
>> anything, so I know it works.
>>
>> Steve
>>
>> ----- Original Message ----- 
>> From: "Kevin Minor" <[log in to unmask]>
>> To: <[log in to unmask]>
>> Sent: Wednesday, May 11, 2011 20:03
>> Subject: Re: The TW2 came.
>>
>>
>>> Hi Tom.
>>>
>>> I checked the box that the TW2 came in as well as the box that they
>>> packed
>>> the box with the TW2, and there's no 12 volt wall wart.  There is the
>>> lead
>>> that can be hooked to my Astron, but I have two things going against me.
>>> First, my hands aren't coordinated enough to put the wires on the
>>> terminals,
>>> and second, and more importantly, I don't know what wire goes where.  As
>>> a
>>> friend of mine said I have a 50 50 chance, but I really don't want the
>>> blue
>>> sparks coming out of this nice new meter.  I can wait until tomorrow or
>>> Friday to get what I need.
>>>
>>> I may have fun and switch the meter to German.  I can learn the numbers
>>> that
>>> way. <grin>
>>>
>>> Kevin Minor, Lexington, KY
>>> [log in to unmask]
>>>
>