Posted on Oct 22, 2014
MSG Signal Support Systems Specialist
25.3K
41
23
3
3
0
Img 0435
At Annual Training this year, we had a mission to support by setting out an administrative Retrans station. I sent the team out after PCCs and PCIs; they had everything they were going to need.

An hour after they were on site, the Retrans wasn't up. I got a call and we went through some basics on the phone. Eventually I asked for a photo of the setup which you can see in this post.

As soon as I saw the pic, I knew what was wrong. Can you spot what I saw?
Posted in these groups: RetransShutterstock 131444195 Signal
Avatar feed
Responses: 6
1px xxx
Suspended Profile
Edited 10 y ago
MSG (Join to see). I may not know much about these newer generation fancy radios . . . but it seems to me the RF cables run too close to each other . . . wonder whether there is a chance for some kind of unpleasant feedback . . . or interference . . . between lo / hi signal levels? I also wonder whether that big honking metal locking bar might cause some ground loop issues. Also, hard to tell, but the switch on the antenna coupler / impedance matcher on the left appears to be midway between two positions . . . maybe it needs to be set on receive or transmit or bypass? Warmest Regards, Sandy

CMDCM Gene Treants
CMDCM Gene Treants
CMDCM Gene Treants
10 y
Like most of the Radios we put in MSBs Mine Sweeping Boast, there is very little room to play around and the cables are well shielded. But that dogbone is backwards for sure - never doubles back in the gear.

What gorilla was able to connect it that way? How could you do that and still get the radio to work after?
(0)
Reply
(0)
1px xxx
Suspended Profile
10 y
CMDCM Gene Treants. This is probably why they used to tell us . . . just pickup the mike . . . press this little button here . . . talk . . . then let go of the little button . . . whatever you do . . . don't touch nothing else!!! Warmest Regards, Sandy
SFC Communications Chief (S6)
SFC (Join to see)
10 y
CMDCM Gene Treants Well, he DID say they had to break it to put it on.
(1)
Reply
(0)
CMDCM Gene Treants
CMDCM Gene Treants
10 y
First rule of a good technician, treat your gear like a lover, nice and Gentle does it. Keeps both happy!
(0)
Reply
(0)
Cpl Ray Fernandez
2
2
0
Edited 10 y ago
Retrans cable is upside down/backwards, the cable is designed to connect in a specific manner and that cable should not have the curve obscuring the keypad. I've been out almost 13 years and can still set up and troubleshoot a radio in my sleep if I needed to.
(2)
Comment
(0)
Avatar small
SFC Communications Chief (S6)
2
2
0
Dogbone on backwards?
(2)
Comment
(0)
MSG Signal Support Systems Specialist
MSG (Join to see)
10 y
Outstanding!

We got a winner.

The dogbone has a natural bend in it and that bend should place most of the cable outboard of the radios on the right side. This way the cable is not in the way of the keypad (I swear, they really do think this stuff through--most of the time). Putting the cable on this way destroyed it--ripped the contacts from the internal U229 connections by twisting it too far.

We replaced the cable and rocked on with the mission.
(2)
Reply
(0)
SFC Communications Chief (S6)
SFC (Join to see)
10 y
Those things are gold!
(1)
Reply
(0)
SFC Communications Chief (S6)
SFC (Join to see)
10 y
These cables are generally labeled A radio and B radio but judging from the picture they couldn't make this out. Easy mistake by the inexperienced. I can't call myself truely experienced but I have had to cobble a couple of retrans setups together.
(1)
Reply
(0)
Avatar small

Join nearly 2 million former and current members of the US military, just like you.

close