What is the best cable for a jumper from the LMR-400 to the scanner, about 6 -10 ft?
Jumper from LMR-400 to scanner
- Thread starter GaRebel
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I guess the best would be more LMR-400 but if it's a short run RG58U types of cables are perfectly fine.
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Brian (COMMSCAN)
I just bought this jumper on Amazon, waiting for it to be delivered.
MPD Digital RF UHF VHF Radio coaxial antenna cable BNC male to UHF SO239 RG-58u MILSPEC US made Coax Mobile to Base Antenna 3 ft
It hasn't arrived, but it's from a US manufacturer made to MILSPEC standards with good reviews.. I thought it was worth a shot. It looks like they have a SO-239 to SMA cable also.
MPD Digital RF UHF VHF Radio coaxial antenna cable BNC male to UHF SO239 RG-58u MILSPEC US made Coax Mobile to Base Antenna 3 ft
It hasn't arrived, but it's from a US manufacturer made to MILSPEC standards with good reviews.. I thought it was worth a shot. It looks like they have a SO-239 to SMA cable also.
Are you going to be running the cable from a multicoupler? I know that I'm doing the same thing today and the jumper cables I need both have the BNC connectors for all of my radio except for the SDS100 in my older BCD436HP. I'm just using the connectors I bought for the radios that have a BNC female end on it so that my jumper cables can all have the BNC male ends on them. It makes them more interchangeable. If you're running the LMR400 directly to the radio it may be a little difficult to use the radio unless it's being held or attached to something. The jumper cable of course will make it a lot easier. But you might have to anchor the LMR400 so it doesn't move.
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Brian (COMMSCAN)
To correctly answer the initial question, the best suggestion would depend on the type of scanner used. If the scanner is a handheld, I would suggest that the jumper be fabricated with high-quality RG58 coax (assuming 10' or less) or possibly even cable that might be a bit thinner. This, of course, would be to minimize stress on the fragile antenna connection on the handheld and better allow for scanner adjustments.
If, on the other hand, we're talking about a desktop/mobile scanner, there is not as much concern for the antenna connection on the scanner - as long as the weight or stiffness of the cable is not pulling the scanner off the desk. If this might be the case, I would suggest a jumper fabricated with LMR240 to preserve as much signal as possible, while still remaining more flexible and much less heavy than LMR400.
It will be a jumper from a LMR-400 cable F connector to a SDS 100 scanner. Maybe 5 - 10 ft.
What I have done is purchased some bulk LMR-240 Ultra Flex, the crimpers, and an assortment of ends so I can make any jumper I need without the need for any adapters and I can make them the exact length I need. This cable is almost as flexible as RG-58 but is a bit lower loss as well. It wasn't hard to learn to crimp my own ends, I think I only ruined 2 starting out. I've been very happy doing this so far.
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