Joined: Nov 01, 2017 Posts: 166 Location: Richmond, BC Canada
Posted: Sun Jul 28, 2024 7:12 pm Post subject:
Ron, yes I received the Lin and have downloaded and printed it.
It does not have the details of the M-298. It has the details for terminating the VRC/375.
I need to add and wire in Another “Int-cont” (W-7) and “Rec-control” (W-2).
The TM you shared does not have the termination detail for those cables. _________________ Lyle
LT-RCEME, Retired
________________
Jeep Rubicon, 2015
M38 CDN, 1952
M416, 1968
Joined: Oct 02, 2014 Posts: 2005 Location: South Carolina, Dorchester County
Posted: Sun Jul 28, 2024 7:29 pm Post subject:
Which Radio Set are you installing?
Will it be a "stock" or standard installation, or something customized? _________________ 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
Those radios can be installed in several different installations both left side or rear of jeep. Which master Signal Corp drawing are you using for the entire set and what are the set item numbers?
Joined: Oct 02, 2014 Posts: 2005 Location: South Carolina, Dorchester County
Posted: Sun Jul 28, 2024 9:45 pm Post subject:
RonD2 wrote:
Which Radio Set are you installing?
Will it be a "stock" or standard installation, or something customized?
Hi Lyle,
The "RT" (Receiver-Transmitter) is a component part of a Radio Set.
According to the manual, what you have is either the AN/GRC-7 or AN/GRC-8 Radio Set --- except for your R-109 Receiver.
AN/GRC-7 is equipped with RT-68 and RT-70 with R-110 Receiver.
AN/GRC-8 is equipped with RT-68 and RT-70 with R-108 Receiver.
The R-109 Receiver is supplied with the AN/GRC-5 Radio Set (RT-67 and RT-70).
If it helps, here's a link to TM 11-284 for Radio Sets AN/GRC-3, 4, 5, 6, 7, and 8.
It might have the interconnect information you seek (175 pages plus schematics).
The AN/VRC-13, 14, and 15 don't use the RT-70 --- so everybody is still guessing which Radio Set you have.
Maybe you can you give us a hint?
By the way, the same schematic diagram is Figure 91 on page 163 of TM 11-284 that I posted earlier:
RonD2 wrote:
If it helps, here's a link to TM 11-284 for Radio Sets AN/GRC-3, 4, 5, 6, 7, and 8.
It might have the interconnect information you seek (175 pages plus schematics).
Joined: Nov 01, 2017 Posts: 166 Location: Richmond, BC Canada
Posted: Fri Aug 09, 2024 1:10 pm Post subject:
Need help with identifying circular connector for W-5, W-7 on the mounts MT-297, MT-298, MT-299.
They are the 9-connectors (Pin) with the draw screws.
I have been unable to find any TM that lasts the parts for these mounts. I did find how to wire them but no part numbers for the connectors. _________________ Lyle
LT-RCEME, Retired
________________
Jeep Rubicon, 2015
M38 CDN, 1952
M416, 1968
Are you looking to buy replacements or repair parts for them?
Still wondering which Radio Set you have or are building......... _________________ 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
Joined: Nov 01, 2017 Posts: 166 Location: Richmond, BC Canada
Posted: Fri Aug 09, 2024 4:59 pm Post subject:
Ron, yes I have the TM printed out. After reading those sections last week they referenced a drawing that I can’t find.
I need two of these connectors to add two New cables to the MT-298.
As for radio setup the odd man out is the R-109. So I’m looking for a R-110 to complete the setup. _________________ Lyle
LT-RCEME, Retired
________________
Jeep Rubicon, 2015
M38 CDN, 1952
M416, 1968
Joined: Oct 02, 2014 Posts: 2005 Location: South Carolina, Dorchester County
Posted: Fri Aug 09, 2024 5:53 pm Post subject:
Lyle wrote:
As for radio setup the odd man out is the R-109. So I’m looking for a R-110 to complete the setup.
What "set up"?
You still haven't told us.
I'm guessing --- AN/GRC-7 ?
Probably easier to find complete cables instead of the piece parts to build them. _________________ 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
Joined: Nov 01, 2017 Posts: 166 Location: Richmond, BC Canada
Posted: Sat Aug 10, 2024 9:35 am Post subject:
Ron:
Radio Set: AN/GRC-7
Type of vehicle: Truck 1/4Ton 4 x 4 Utility M38 (24-volt)
Stock numbers:
Complete equipment: 2812-7-V76
Basic unit: 2812-7/24
Installation Unit: 2512-3-V76/50
Although the AN/GRC-7 includes a R-110 I’m using a R-109 which all TM’s regarding this substitution seems to allow it. And I have all the proper antenna bases and antenna elements. _________________ Lyle
LT-RCEME, Retired
________________
Jeep Rubicon, 2015
M38 CDN, 1952
M416, 1968
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