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horse Member
Joined: Sep 08, 2019 Posts: 218 Location: Yorkshire U.K.
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Posted: Wed Jan 04, 2023 3:53 pm Post subject: Receiver- Transmitter RT-68/GRC |
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Hi, I have the above unit in my Jeep with a PP-112/GR power supply mounted onto a MT-299/GR mount. For good weight distribution its behind the passenger seat.
The power supply lead is CX-2031A/U 8FT 3IN.
I have recently bought and mounted the Radio Receptical mounted by the side of the passenger seat. Mid West also supplied the male plug to fit into the Receptical from the Transmitter.
At the moment the power supply has a loop on the end of the positive ready to go onto a battery, the earth is just an open wire.
I have looked at many photos of these Transmitters power supply and that is how they are shown with the loop end on the terminals not connected into the Receptical.
I am correct in my thinking that the wiring should be soldered into the male connector and then into the Radio receptical, just the two wires each side?
I take it the loop end set up would be for just adding a power supply not using the Jeep batteries?
This is a whole new ball game to me as I only did a bit of Sideband on the C.B radios back in the 80ies. I do remember not to key the handset with no ariel connected.
Any thoughts would be appreciated.
Thanks.
Horse. _________________ 1952 M38 |
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wesk Site Administrator
Joined: Apr 04, 2005 Posts: 16365 Location: Wisconsin
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horse Member
Joined: Sep 08, 2019 Posts: 218 Location: Yorkshire U.K.
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Posted: Thu Jan 05, 2023 7:46 am Post subject: |
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Thank you Wes for a comprehensive reply.
Also good to know a different way rather than soldering.
Lots more to study.
Regards.
Horse _________________ 1952 M38 |
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horse Member
Joined: Sep 08, 2019 Posts: 218 Location: Yorkshire U.K.
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Posted: Fri Jan 06, 2023 4:13 pm Post subject: |
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I am unable to find the TM 9-1825E Electrical Equipment in the Downloads or on your photo albums.
Am I missing something?
Horse. _________________ 1952 M38 |
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horse Member
Joined: Sep 08, 2019 Posts: 218 Location: Yorkshire U.K.
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Posted: Fri Jan 06, 2023 4:20 pm Post subject: |
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Found it. _________________ 1952 M38 |
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horse Member
Joined: Sep 08, 2019 Posts: 218 Location: Yorkshire U.K.
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Posted: Sat Jan 07, 2023 4:31 pm Post subject: |
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Managed to get the plug soldered in today and the connections are good.
For anybody doing this I found the A B C on the plug ends.
A = positive
B= Ground
C = I understand is a spare if any of the others go down in the field. Waiting for the correction on this.
Horse. _________________ 1952 M38 |
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RonD2 Member
Joined: Oct 02, 2014 Posts: 2003 Location: South Carolina, Dorchester County
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Posted: Sat Jan 07, 2023 5:32 pm Post subject: |
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horse wrote: | For anybody doing this I found the A B C on the plug ends.
A = positive
B= Ground
C = I understand is a spare if any of the others go down in the field. Waiting for the correction on this.
Horse. | Hi Horse,
Which diagram in the radio set manual did you find the pin-out key that A = 24V and B = Ground? _________________ Ron D.
1951 M38 Unknown Serial Number
1951 M100 Dunbar Kapple 01169903 dod 5-51
“The only good sports car that America ever made was the Jeep."
--- Enzo Ferrari
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wesk Site Administrator
Joined: Apr 04, 2005 Posts: 16365 Location: Wisconsin
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horse Member
Joined: Sep 08, 2019 Posts: 218 Location: Yorkshire U.K.
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Posted: Sun Jan 08, 2023 2:22 am Post subject: |
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It would have been good if I had found the wiring diagram from Wes but I did not see that one.
The jeep is running well and I did not want to link up any power from the battery down to the Radio Receptical and cause other problems if I had got something wrong.
So with the Radio Receptical disconnected from the battery I put 12v down the positive lead from a separate battery to determine which was the live pin, which came out as A. There are only two wires on the radio power lead so that part was fine after checking nobody had switched the wires in the power unit.
Probably not the correct way of doing things but it got a result.
Horse. _________________ 1952 M38
Last edited by horse on Tue Jan 10, 2023 7:48 am; edited 3 times in total |
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wesk Site Administrator
Joined: Apr 04, 2005 Posts: 16365 Location: Wisconsin
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horse Member
Joined: Sep 08, 2019 Posts: 218 Location: Yorkshire U.K.
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Posted: Sun Jan 08, 2023 6:45 am Post subject: |
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Yes correct. Just the radio side to get right.
The NOS set came fully assembled.
It is difficult to see on the plugs from the outside how they are wired with the pins so close together.
All good.
Horse. _________________ 1952 M38 |
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