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Black cylindrical lightning protector with N-Female bulkhead connectors on both ends and a ground lug

L-com

L-com AL-NFNFB-9 N-Female to N-Female Bulkhead 90V Lightning Protector

SKU CH-JD5K-Y331S

Gas-discharge lightning protector with N-Female bulkhead connectors, 90 V rating, DC-passing design and replaceable tube for 802.11 wireless links

  • TypeOther
  • ColorBlack
  • Protects equipment from surges with 90 V gas discharge tube
  • Wide-band operation up to 3 GHz covers IEEE 802.11 b/g and cellular bands
  • Bulkhead N-Female to N-Female design mounts through enclosure walls
  • Replaceable gas tube element allows multi-strike protection
  • Ground lug on housing ensures superior grounding

Gas-discharge lightning protector

The L-com AL-NFNFB-9 is a 90 V gas discharge tube suppressor with N-Female to N-Female bulkhead connectors. It operates across a wide band up to 3 GHz and includes a rubber O-ring seal for weather-tight panel mounting. A replaceable gas tube element gives multi-strike capability with fast response time. A ground lug and terminal are built into the housing for direct grounding.

Suited for DC-carrying coax lines

This protector passes DC voltage, making it appropriate for remote amplifiers, LNAs and similar equipment powered through the coaxial cable. It supports IEEE 802.11 b and g wireless LAN, ISM, MMDS, cellular and PCS bands. Both ports are equally protected so either side can face the antenna or the radio. Buyers who need protection for higher-frequency microwave links or who require a different connector series should look at alternative models.

Mounting hardware and replaceable element

An aluminium mounting bracket is supplied for installations where panel mounting is not practical. The replaceable gas tube extends service life by allowing the suppressor core to be swapped after heavy strikes without replacing the whole unit. The integrated ground lug simplifies bonding to a ground bar or mast, reducing the number of separate grounding components needed.

Highlights

  • Protects equipment from surges with 90 V gas discharge tube
  • Wide-band operation up to 3 GHz covers IEEE 802.11 b/g and cellular bands
  • Bulkhead N-Female to N-Female design mounts through enclosure walls
  • Replaceable gas tube element allows multi-strike protection
  • Ground lug on housing ensures superior grounding

Specifications

BrandL-com
ModelAL-NFNFB-9
TypeOther
ColorBlack

Questions about this item

What type of coaxial cable connectors does the AL-NFNFB-9 require to attach to my antenna and radio?

The protector uses N-Female bulkhead ports on both sides, so you need cables terminated with N-Male plugs to connect your antenna and equipment.

Will the AL-NFNFB-9 pass the DC voltage needed to power my tower-mounted amplifier through the coax?

Yes, the gas discharge tube design passes DC current, allowing it to supply remote amplifiers or LNAs through the same coaxial cable.

How can I verify the AL-NFNFB-9 is correctly grounded after mounting it on my enclosure wall?

Connect a ground wire from the supplied lug on the housing to your system ground point; the O-ring seal ensures a weatherproof bulkhead fit through the wall.

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