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What cables to run to the external LTE antenna?

rafmik 22383 48
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What cable should I pre-install between the router location and a future external LTE/5G antenna over a 15 m run?

Run Ethernet, not a 15 m passive LTE antenna coax: the suggested solution is to place the LTE router/CPE as close to the antennas as possible and bring the network inside over twisted pair, using external gel-filled Cat. 5e for the outside run and Cat. 6A U/UTP full-copper for the house wiring [#19595384] [#19595300] [#19595337] A 15 m RF coax run was considered too long; one reply said LTE antenna cables should ideally be up to 5 m and at most 10 m because cable loss can outweigh the antenna gain [#19595178] [#19595307] If you want future-proofing, lay an empty HDPE pipe or at least a 25–28 mm conduit so a different cable can be pulled later [#19595300] [#19595689] For the rest of the installation, use separate full-copper UTP Cat. 6A runs to each point, with keystone sockets/patch panel, and avoid cheap cables [#19595337] [#19595313]
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  • #31 19880602
    rafmik
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    It just crashed over the price of the cable. And I would just need about 35 meters. The cable itself would be more expensive than 2x UTP cat6 external + antenna with modem.
    So I stayed with the twisted pair (x2 just to be sure).
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  • #32 19885626
    Mxer123
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    rafmik wrote:
    It just crashed over the price of the cable. And I would just need about 35 meters. The cable itself would be more expensive than 2x UTP kat6 external antenna with modem.
    So I stayed with the twisted pair (x2 just to be sure).


    Twisted pair in the open air is also a certain risk. Whether it's 6kat or 5 or 7 ... it should be shielded, and thus the shield should be grounded somewhere.

    In rackable switches you have power from the 3-pin mains, while home devices in the style of router have power through a transformer and are devoid of grounding.

    The storm is merciless for such wires, I know for myself.

    In addition, the shielded cable must have appropriate grommets and you need to skilfully crimp it.
  • #33 19888565
    rafmik
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    Mxer123 wrote:
    rafmik wrote:
    It just crashed over the price of the cable. And I would just need about 35 meters. The cable itself would be more expensive than 2x UTP kat6 external + antenna with modem.
    So I stayed with the twisted pair (x2 just to be sure).


    Twisted pair in the open air is also a certain risk. Whether it's 6kat or 5 or 7 ... it should be shielded, and thus the shield should be grounded somewhere.

    In rackable switches you have power from the 3-pin mains, while home devices in the style of router have power through a transformer and are devoid of grounding.

    The storm is merciless for such wires, I know for myself.

    In addition, the shielded cable must have appropriate cable ties and it must be skillfully clamped.



    This cable "in the air" will be with a max of 50 centimeters. From the wall to the antenna. Do you think thunderstorms could be a problem here too?
    A black, external, gel-coated cable is used.
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  • #34 19888688
    Mxer123
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    rafmik wrote:
    This cable "in the air" will be with a max of 50 centimeters. From the wall to the antenna. Do you think thunderstorms could be a problem here too?
    A black, external, gel-coated cable is used.


    I had much more of it, and not just one, but a whole bunch. I saw sparks jump between the wires.

    50cm is not much, if the cable goes out of the building directly to the antenna and it will be 50cm, then leave it as it is, but if it goes 10m along the wall / elevation ... and then these 50cm "in the air" it's already lime tree.

    Room -> wall -> 50cm to the antenna = approx
    Room -> wall -> 10m along the wall -> 50cm to the antenna = linden tree
  • #35 19888707
    Anonymous
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  • #36 19895636
    rafmik
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    _cheetah_ wrote:

    So lightning protection outside plus additional overvoltage protection inside. It's just that then it would probably cost you a lot more than pulling a twisted pair....




    The cable from the antenna will go through the wall, and then goes to the boiler room in the space above the attic KG buildings.
    The house will have lightning.
    The cable on the other side (in the boiler room) how best to secure it? Before connecting to a router with PoE?

    In total, the same will apply to 4 cameras, also twisted pair, pulled out of the wall from half a meter.
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  • #38 19898209
    rafmik
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    _cheetah_ wrote:


    rafmik wrote:
    A black, external, gel-coated cable is used.

    OK here.



    And such a gelled UTP cable is earned as usual? Do you need any special rj45 plugs?

    Added after 56 [seconds]:

    _cheetah_ wrote:
    Take a look there --> https://www.elektroda.pl/rtvforum/topic3873648.html, where we beat some foam in a similar topic.



    I'll read it soon. It's mainly about the cable for the antenna with the LTE modem. The UTP cables for the cameras will in theory be hidden in the camera wall mount.
  • #39 19898306
    Anonymous
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  • #40 19899896
    rafmik
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    _cheetah_ wrote:
    rafmik wrote:
    And such a gelled UTP cable is earned as usual? Do you need any special rj45 plugs?

    As U/UTP it's normal. Unless the cable is in some special execution. It's always best to ask the seller of the cable you want to buy when in doubt.


    The cables are already laid. It is exactly Bitner BiTLAN F/UTPf cat.5e. From what I can see it's 7mm in diameter,
    A regular rj45 plug will fit on it or will you have to combine?


    Maybe by the way, I'll ask - what crimper and stripper to buy? It has to be good, but not professional. Normal home use, only now making cables at home - max of 40 terminals.
  • #41 19899908
    IC_Current
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    rafmik wrote:
    A regular rj45 plug will fit on it or will you have to combine?

    It will not fit. I always end gelled wires with a socket with keystones.
    In a no-win situation (e.g. a camera on a pole), I install cat 6 modular plugs with internal conductor guides. Something like that:
    What cables to run to the external LTE antenna?
    Helpful post? Buy me a coffee.
  • #42 19900041
    Anonymous
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  • #43 19900047
    rafmik
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    IC_Current wrote:
    rafmik wrote:
    A regular rj45 plug will fit on it or will you have to combine?

    It will not fit. I always end gelled wires with a socket with keystones.
    In a no-win situation (e.g. a camera on a pole), I install cat 6 modular plugs with internal conductor guides. Something like that:
    What cables to run to the external LTE antenna?


    Here, the cables come directly from the façade. I want to protect it from water as much as possible, because the LTE antenna and one camera will be on the western side - where it jams heavily rain / snow, etc.

    These cat 6 modular plugs will be ok with 5e cable? Can I use a regular crimper?
    Does it earn the same? Because I see that these plugins have two elements.
  • #44 19900062
    IC_Current
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    rafmik wrote:
    These cat 6 modular plugs will be ok with 5e cable?

    Yes, they only have a larger sheath diameter adapted as standard to cat6 cables. However, buy the FTP version, because that's what you have cables.

    rafmik wrote:
    Does it earn the same? Because I see that these plugins have two elements.

    It works the same way, just earns differently. First, the wires are inserted into the inner guide, then the excess of the wire is cut off with cutters (preferably bevelless). Next, you insert the wires and guide into the external adapter and crimp normally.
    Helpful post? Buy me a coffee.
  • #45 19900109
    rafmik
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    _cheetah_ wrote:

    This is a plug for shielded cables.

    And there should be a twist mutually grounded otherwise you may have unpleasant surprises.

    I would choose something frontal for ordinary / through connectors and I would also use such through connectors. Do not buy the cheapest and most expensive.
    Cutter and puller basically all crimpers have in them.


    Thank you very much for your answers :)


    And how to ground such a twisted pair? Because it will be connected to the LTE modem (or camera) on the one hand and to the router (or recorder) on the other.

    Front crimper for about PLN 70, e.g. NEKU is ok quality?

    Added after 32 [minutes]:

    I'm getting the point right. A grounded patch panel should be used. Can I pass POE through such a grounded patchpanel? Because 100% of external cables will also supply power - 4x camera and antenna with LTE modem.
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  • #46 19900192
    Anonymous
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  • #47 19900249
    rafmik
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    _cheetah_ wrote:

    For grounding.

    It's just that in a typical residential house, 99.9999% of the grounding system is absent. There is only (should be) an installation PE - pins in electrical sockets. And this is not a grounding installation for RF, but a protective installation (anti-shock).

    You have two options:

    first - leave the twisted pair ungrounded - with some luck it can work on 1G. However, be aware that safety requirements require such twisted pairs to be grounded. It's a stick with two ends.

    the second - to "ground" to the EP. A better solution than the first one, but it is also unknown how the network will behave for high speeds, such as several hundred Mbps. Of course, here you must have LAN sockets / keystones with grounding.


    _cheetah_ wrote:

    What have you done...


    This is how it is done remotely: / Parents will live there, I am able to appear there once a month.
    To make it happier ... today I told my parents to take pictures of the wires (hence I know what external cables are), but I just noticed one myk ... cables inside is Bitner F/UTP 6 cat.
    So shielded - they need to be grounded? Hopefully not... F/UTP modular connectors should also be used for these internal cables?


    If I buy a patch panel with grounding, can I connect cables on this panel that also provide POE power to the LTE modem and cameras?
    Also use this panel to connect internal cables (where only one cable will be from POE - to the access point on the ceiling).
  • #48 19900313
    IC_Current
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    If you have more wires and in a typical installation at home, modular plugs are not used, but only in accordance with the art. The trick is to mount the patchpanel on one side and the socket on the other. Only to these elements do you connect the device with patch cords. Shielded cable is made in a keystone, the keystons are attached to the patchpanel and the patchpanel is grounded to the main grounding bus of the building. You have such a rail in the boiler room or in the vicinity of the main switchboard. Unless it's a really old house, there won't be a GSU rail.

    rafmik wrote:
    If I buy a patch panel with grounding, can I connect cables on this panel that also provide POE power to the LTE modem and cameras?

    Yes, but it's supposed to be a patch panel with keystone modules. These LSA strip panels often have a DC voltage filter.
    Helpful post? Buy me a coffee.
  • #49 19900406
    rafmik
    Level 10  
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    IC_Current wrote:
    If you have more wires and in a typical installation at home, modular plugs are not used, but only in accordance with the art. The trick is to mount the patchpanel on one side and the socket on the other. Only to these elements do you connect the device with patch cords. Shielded cable is made in a keystone, the keystons are attached to the patchpanel and the patchpanel is grounded to the main grounding bus of the building. You have such a rail in the boiler room or in the vicinity of the main switchboard. Unless it's a really old house, there won't be a GSU rail.

    rafmik wrote:
    If I buy a patch panel with grounding, can I connect cables on this panel that also provide POE power to the LTE modem and cameras?

    Yes, but it's supposed to be a patch panel with keystone modules. These LSA strip panels often have a DC voltage filter.


    Ok, so I make plugs only outside with cameras and an antenna with an LTE modem.

    From the side of the house (in the boiler room):

    All external cables will supply PoE power at the same time. It is 5 cables (4x camera, 1x external LTE antenna with built-in modem)
    Internal cables are 14 LAN sockets in the rooms (7 sockets with 2 plugs each) and 2 cables where there will also be PoE power supply to Access Points.

    Can external cables (with PoE power supply) and internal cables be connected together in one patchpanel? The patch panel will be grounded.

    I found something like this:

    - rack cabinet: https://allegro.pl/oferta/neku-szafa-rack-wiszaca-19-6u-350mm-polka-150mm-11828450277

    It will have to accommodate a patch panel for 5 external cables and 16 internal ones. Total 21, i.e. a patch panel for 24 ports, a monitoring recorder inserted inside, a switch. The router with wifi will rather stand on the rack (so as not to suppress the wifi signal) - at least until access points appear. And a UPS (I don't know if it's inside or on top) - for monitoring, a router and an antenna with an LTE modem


    - patchpanel with keystone modules, 24 ports with grounding - here is the question whether I can connect external and internal cables, with PoE and without PoE with one patchpanel.

    Patchpanel, for example: https://allegro.pl/oferta/patch-panel-rack-19-utp-24-porty-rj45-kat-6-6848314515 - I'm not sure if I chose the right one.

    How to lead the grounding here?


    And the rooms just need keystone sockets.

Topic summary

✨ The discussion revolves around the optimal cabling solutions for connecting an external LTE antenna to a router, particularly focusing on the necessary lengths and types of cables. Users recommend using low-resistance antenna cables, such as LMR400, for distances up to 15 meters, while emphasizing that longer runs can lead to signal loss. Ethernet cables, specifically Cat 6A, are suggested for data and power, as they support higher speeds and future-proofing. The importance of proper installation practices, including grounding and avoiding damage to cables, is highlighted. Users also discuss the need for multiple Ethernet and coaxial connections in various rooms to accommodate devices like TVs, access points, and cameras. The conversation includes considerations for lightning protection and the use of patch panels for organizing connections.
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FAQ

TL;DR: Running 15 m of LTE coax can drop signal by ~6 dB—“15 m wires are definitely too much” [Elektroda, IC_Current, post #19595178] Place the modem/CPE outside and pull Cat 6A U/UTP (10 Gb s up to 100 m) [Elektroda, IC_Current, post #19595300]

Why it matters: Right-sized cabling saves every decibel of signal and every future gigabit.

Quick Facts

• Cat 6A U/UTP supports 10 Gb s up to 100 m, yet costs only ≈5 % more than Cat 5e [Elektroda, IC_Current, post #19595300] • LMR-400 loss: 0.21 dB / m @ 2 GHz; 15 m ≈ 3.2 dB one-way [Times Microwave Data, 2024]. • 802.3af/at PoE delivers 48–57 V up to 100 m on 24 AWG copper [IEEE 802.3-2018]. • Cat cable bend radius: ≥4×OD; kinking cuts NEXT margin by ~40 % [TIA-568.2-D]. • CCA (copper-clad aluminium) adds 70 % resistance and voids PoE warranty [Fluke Networks, 2023].

1. What is the longest coax I should run between LTE modem and passive antenna?

Keep it below 10 m; at 15 m even low-loss LMR-400 drops ~3 dB each way, erasing antenna gain [Elektroda, IC_Current, #19595178; Times Microwave, 2024].

2. I must span 15 m—what’s the alternative?

Mount an outdoor CPE with integrated modem beside the antenna and feed a single Cat 6A to the router; Ethernet stays solid to 100 m [Elektroda, Anonymous, post #19595307]

3. Is Cat 6A really worth the upgrade over Cat 5e at home?

Yes. Cat 6A gives 10 Gb s for the life of the house, versus 1 Gb s on Cat 5e, with negligible price difference [Elektroda, IC_Current, post #19595300]

4. Should I use UTP or FTP inside walls?

Use U/UTP. Home environments lack the EMI that justifies shielded FTP, and unshielded cable avoids grounding headaches [Elektroda, adwlodar, post #19595340]

5. Why run two Ethernet lines per room and four behind the TV?

Redundancy plus device growth. A spare saves you if one line fails and covers TVs, APs, consoles, printers, NAS, etc. [Elektroda, IC_Current, post #19595232]

6. Will PoE still work after 30 m?

Yes. 802.3af powers 15.4 W and 802.3at 30 W over 100 m of 24 AWG copper with <3 V drop [IEEE 802.3-2018].

7. How do I protect outdoor Cat cables from lightning?

Bond shielded runs to the building’s grounding bar and add an in-line Ethernet surge protector before the switch; without it, adjacent strikes can fry ports [Elektroda, cheetah, post #19888707]

9. How do I terminate gel-filled outdoor UTP?

  1. Strip and wipe gel. 2. Feed conductors into a guided Cat 6 FTP modular plug. 3. Crimp with a front-feed tool; keystones are cleaner if space allows [Elektroda, IC_Current, post #19899908]

10. Will one Wi-Fi 5 GHz AP cover a 120 m², two-storey house?

Unlikely. Reinforced concrete ceilings cut 5 GHz by 20–30 dB; plan at least one AP per floor for >300 Mb s links [Elektroda, IC_Current, #19595366; Cisco Design, 2022].

11. Do I need fibre today?

Pre-run a spare micro-duct; operators prefer blowing their own fibre. Inside, a duplex OM3 patch from utility room to living room costs <€20 and future-proofs 40 Gb s [Elektroda, IC_Current, post #19595439]

12. What happens if I use copper-clad aluminium cable?

CCA’s 70 % higher resistance overheats PoE and often fails within two years, especially outdoors [Fluke Networks, 2023]. "Full copper or expect callbacks," warns an installer [Elektroda, Anonymous, post #19595349]

13. How to decide the best antenna spot in three steps?

  1. Attach LTE modem to test antenna on a 5 m pole. 2. Log RSRP/RSRQ in several positions. 3. Secure mount where SINR peaks; adjust later if speeds drop [How-To based on forum workflow].
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