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Radio

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tbird View Drop Down
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Joined: 01 Nov 2013
Location: usa
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Post Options Post Options   Thanks (0) Thanks(0)   Quote tbird Quote  Post ReplyReply Direct Link To This Post Topic: Radio
    Posted: 12 Jan 2020 at 11:21am
Have a radio that is pos hot can I book it to a pos ground
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SteveM C/IL View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote SteveM C/IL Quote  Post ReplyReply Direct Link To This Post Posted: 12 Jan 2020 at 3:27pm
It's neg ground. Don't have enough knowledge to say for sure but doesn't sound like a good idea. Hook it directly to battery ...pos to pos neg to neg. Don't worry about tractor polarity.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Jim.ME Quote  Post ReplyReply Direct Link To This Post Posted: 12 Jan 2020 at 5:41pm
I would do a whole lot of continuity testing or I would total insulate it from the tractor if I was going to hook it direct to the battery. There might be a ground in the case that would carry to the tractor when mounted.
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DrAllis View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 12 Jan 2020 at 5:50pm
I thought the old "Automatic" brand fender mount radio had a small cover on the backside that allowed you to change the radio polarity  ??? Been 50+ yrs ago...………..
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JC-WI View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote JC-WI Quote  Post ReplyReply Direct Link To This Post Posted: 12 Jan 2020 at 5:50pm
Turn the tractor to negative ground...
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The truth is the truth, sugar coated or not. Trawler II says, "Remember that."
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Post Options Post Options   Thanks (0) Thanks(0)   Quote jaybmiller Quote  Post ReplyReply Direct Link To This Post Posted: 12 Jan 2020 at 6:00pm
NO !!! Well NOT easily....
you'd have to mount in a wooden box or somehow TOTALLY isolate it from the tractor AND the antenna CANNOT ever touch the tractor either....
...thinkin...
hmm. assuming the radio is 12 volts,you could repolarize the generator, flip ammeter connections and  that would be OK ..... as the tractor is now a negative ground....

3 D-14s,A-C forklift, B-112
Kubota BX23S lil' TOOT( The Other Orange Tractor)

Never burn your bridges, unless you can walk on water
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Brian Jasper co. Ia View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Brian Jasper co. Ia Quote  Post ReplyReply Direct Link To This Post Posted: 15 Jan 2020 at 9:50pm
Originally posted by jaybmiller jaybmiller wrote:

NO !!! Well NOT easily....
you'd have to mount in a wooden box or somehow TOTALLY isolate it from the tractor AND the antenna CANNOT ever touch the tractor either....
...thinkin...
hmm. assuming the radio is 12 volts,you could repolarize the generator, flip ammeter connections and  that would be OK ..... as the tractor is now a negative ground....

Isn't there a ground plane involved in AM/FM radio like with a CB radio? I have one of those REI fender radios on my D17 and while it gets better reception in my shop than any portable, it has very limited reception compared to the average car.
"Any man who thinks he can be happy and prosperous by letting the government take care of him better take a closer look at the American Indian." Henry Ford
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jaybmiller View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote jaybmiller Quote  Post ReplyReply Direct Link To This Post Posted: 16 Jan 2020 at 6:01am
yeah, uses car body as the ground plane , that's why you can't bolt the antenna to the tractor as it'll sort out a +ve gnd radio.
just another reason to go 12Volt -ve ground..... 'normal' radios will work....
3 D-14s,A-C forklift, B-112
Kubota BX23S lil' TOOT( The Other Orange Tractor)

Never burn your bridges, unless you can walk on water
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