Author Topic: Radio terminal boxes  (Read 5775 times)

steve1973

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Re: Radio terminal boxes
« Reply #15 on: October 08, 2017, 06:02:53 AM »
My original I think is galvanized. My reproduction I had made is zinc plated.

Steve A.

brian in denver

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Re: Radio terminal boxes
« Reply #16 on: October 08, 2017, 09:41:21 AM »
Brian,
  Good call.  Are you talking about the HO-17?  I'll have to dig into how they are wired up...maybe find an alternative.

-Tom

no the ho-17 is the SCR-399,  the -193 is smaller, but they used the box to connect in the intercom in some cases.

I measured the carrall posts and came up with 5" inches between the screw holes.  now will have to go look for terminal block specs.

BB


brian in denver

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Re: Radio terminal boxes
« Reply #17 on: October 08, 2017, 09:43:21 AM »
My original I think is galvanized. My reproduction I had made is zinc plated.

Steve A.

the Jeep guys have a hole thing about how there painted.  for some reason it sticks in my mind they had a special coating (lead) ? on the inside.

http://g503.com/forums/viewtopic.php?p=479706

BB
« Last Edit: October 08, 2017, 10:10:20 AM by brian in denver »

brian in denver

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Re: Radio terminal boxes
« Reply #18 on: October 08, 2017, 10:03:17 AM »
dog gone, close but not a banana

https://www.mcmaster.com/#7527k32/=19q2xh3

5.50 between post holes  :'(

BB

Im guessing thats all there is on the market, unless somebody has found one that fits ?

« Last Edit: October 08, 2017, 10:07:56 AM by brian in denver »

Outsider

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Re: Radio terminal boxes
« Reply #19 on: October 08, 2017, 10:09:28 AM »
Hot dipped galvanized is form of lead coating. That is why you are not supposed to cut or weld it without special equipment.

Steve
Lots of green "junk" as my wife likes to call it.
Friends don't let friends buy Trailking Trailers!

yd328

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Re: Radio terminal boxes
« Reply #20 on: October 10, 2017, 11:02:45 AM »
Here are some more pictures of the junction boxes I pulled out of my halftrack. My track had a SCR 506, 510 and RC-58. I assume power distribution. The main heavy cable was on the passenger side and connected to the left box. Both boxes also have wired grounds to the frame. I don't know if anyone can add any more info on these. 

Gary


The capacitor


steve1973

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Re: Radio terminal boxes
« Reply #21 on: October 10, 2017, 11:46:58 AM »
Very interesting. Thanks for posting.

Steve A.

brian in denver

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Re: Radio terminal boxes
« Reply #22 on: October 10, 2017, 03:55:33 PM »
look like the standard jeep/weasel box,  would work ok with the small sets,  but not the SCR-193/CH-60 set up. and you could probably only run one radio out of it.

also that size box but with different guts, is used in sherman intercom application.

we have a steel flex conduit thats NOS, which should run from the battery box to the J-box.  from the J-box to the radio should be a heavy rubber cord.

are you saying that the flex conduit is a jumper between the two boxes ?

BB
« Last Edit: October 10, 2017, 04:03:39 PM by brian in denver »

brian in denver

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Re: Radio terminal boxes
« Reply #23 on: October 10, 2017, 04:06:26 PM »
I dont know, the use of braided flex, for the battery end is possible,  might depend on the Mfgr.

interesting that there is only a hot wire. on the dodges  theres also a ground straight to the battery as well. and then the jumper to the frame.

could be they finally figured out they didnt need the primary ground.

BB
« Last Edit: October 10, 2017, 04:28:05 PM by brian in denver »

yd328

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Re: Radio terminal boxes
« Reply #24 on: October 10, 2017, 05:43:49 PM »
Quote
are you saying that the flex conduit is a jumper between the two boxes ?

Yes, The cable ran under the body to the positive posts in the boxes. The large cable went through about a one inch hole in the storage compartment floor. But all that is left of it is a frayed end with no indication where it may have went.

Gary

Tapper02

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Re: Radio terminal boxes
« Reply #25 on: May 06, 2018, 11:01:52 AM »
Here are some more pictures of the junction boxes I pulled out of my halftrack. My track had a SCR 506, 510 and RC-58. I assume power distribution. The main heavy cable was on the passenger side and connected to the left box. Both boxes also have wired grounds to the frame. I don't know if anyone can add any more info on these. 

Gary
The capacitor



Gary,
  Have you found replacement capacitors yet?

Anyone else know a modern day replacement for these?

-Tom
1944 AUTOCAR M15A1 (M16A1) HALF-TRACK:
(Being restored to an M3A1 configuration)
SERIAL NUMBER M-15 A 1, 1356
MODEL M-16 A 1, ORD. SERIAL NUMBER 1106

MVPA # 30507

yd328

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Re: Radio terminal boxes
« Reply #26 on: May 07, 2018, 04:02:04 PM »
Hello Tom,
I have not found replacements other than some modern capacitors of similar ratings when I googled them. There are different types and I'm not sure which would be appropriate. Maybe I'll post over on the G see if one of the radio guys has a suggestion.

Gary