[Boatanchors] Question on 24 volt

[mac]

Preston,

You are on the correct site.  I see that you have already received  
input concerning a suitable military supply and some battery setups.

The T-195s originally came with a pair of internal mechanical  
dynamotors and thus required a 24 - 28 vdc power source that could  
supply the initial starting surge (100A +) that goes with those  
devices.  Later units came with solid-state replacements and many  
older units were retrofitted with solid-state internal supplies  
especially the 1000 vdc  unit.  If the T-195 you acquire has been  
retrofitted with solid state supplies (both internal units) you may be  
able to use a 50 amp switching type primary power supply.  Don't try  
to use a  "switcher" with the mechanical dynamotors, though, unless  
augmented with batteries as others have described.

You can use a pair of smaller (25 - 30 amp) supplies with the T-195.   
The internal load is split into two internal circuits that are brought  
out separately to the input power connector and the two loads are  
almost evenly balanced.  I ran my first T-195 this way for a number of  
years.

Also note that the T-195 was designed for mobile use and will operate  
over a 22 - 32 volt input range, i.e., not fussy about regulation.  A  
simple brute-force supply -- husky transformer, rectifier stack and  
150,000 - 200,000 mfd of capacity for a filter will work FB.

Dennis D.  W7QHO
Glendale, CA

**************
On Mar 29, 2013, at 9:19 PM, Preston Clark wrote:

> This may be the wrong site but i am curious what do people do to run  
> old
> military gear  i am looking a getting a t-195 i called fair radio   
> and they
> say to power it is 24 volt  40 amps  any ideas
>
> 73
> Preston Clark
> KF5EVV
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