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Old 02-10-2018, 04:03 PM   #1
goontron
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Join Date: Dec 2011
City & State: South Greeley, Wyoming
My Country: US
Line Voltage: 13.9kv HT service and some 240v center tap oddity.
I'm a: Professional Tech
Posts: 3,945
Default 2m/70c Radio battery eliminator build

Well, this timeline is going to be full of holes here. Make sure you format the right SD card kids! Anyway...

So, the battery from my old dual band radio finally quit. I decided to build a battery eliminator.
The case is about 1 1/2" x 3" x 1/2" OD, so space is a bit tight, but not horrible.

Here's what it looks like gutted and my first attempt at a ground bus installed. (Hint, tin coated steel doesn't stick to silicone very well.)

Next, the picture of my first (Failed) attempt.

Why it no work? battery dead? 5.5v? WTF

Doh! I that read wrong. Thats a 6v regulator, not 8v

Well, lets try switchmode then!

It Verks! *pop* ...are you shitting me? It committed suicide. LED is out.

Round 2?

Round 2 Verks!

Into the case it goes. I had the whole assembly process photographed, but oops.

Still Verks!

Well, glamour (shame?) shots then.

I forgot the nylon nut and bolt.... Crap. I may fix that one day.

DC 20v test. Looks good.

AC 20v test. Also good.

Let me shoehorn in some firmware fuckery proof here.


IN: AC ~9v-30v/DC +/-10v-35v OUT:7.6vDC

Not a bad little eliminator.
Attached Images
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File Type: jpg IMG_20180207_183325539.jpg (297.4 KB, 113 views)
File Type: jpg IMG_20180209_150456731.jpg (447.0 KB, 117 views)
File Type: jpg IMG_20180207_183409609.jpg (494.1 KB, 115 views)
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File Type: jpg IMG_20180207_183346953.jpg (574.2 KB, 115 views)
File Type: jpg IMG_20180210_115456523.jpg (818.5 KB, 117 views)
File Type: jpg IMG_20180210_115533586.jpg (591.6 KB, 114 views)
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File Type: jpg IMG_20180210_114359596.jpg (369.2 KB, 113 views)
File Type: jpg IMG_20180210_113330646.jpg (252.2 KB, 111 views)
__________________
Things I've fixed: anything from semis to crappy Chinese $2 radios.

"Dude, this is Wyoming, i hopped on and sent 'er. No fucking around." -- Me

My "Extremest" views: I will spread my knowledge to whoever will receive it. It is their prerogative if they do bad with it.

You must have a sad, sad boring life if you hate on people harmlessly enjoying life with an animal costume.

Sometimes you need to break shit to fix it.... Thats why my lawnmower doesn't have a deadman switch or engine brake anymore

Last edited by goontron; 02-10-2018 at 04:23 PM..
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