Bingfu Lora Antenna 20ft ALSR400 Ultra Low Loss Extension Cable

In this review the Bingfu Lora Antenna 20ft ALSR400 extension cable is evaluated for anyone moving a LoRaWan or Helium hotspot antenna to a better location. The bottom line: this cable is for operators who need a reliable, ultra low loss link between an N type antenna and a device with an RP-SMA or SMA connector. It delivers clear benefit by letting you reposition an outdoor or rooftop antenna without compromising signal, and the included RP-SMA female to SMA male adapter makes it easy to connect common hotspot and router hardware.

Key Features

• Connector compatibility: N female to RP-SMA male connectors let you attach standard outdoor antennas to devices with RP-SMA or SMA female ports for flexible installations.
• Included adapter: The RP-SMA female to SMA male adapter avoids extra trips to buy adapters and widens device compatibility immediately.
• Ultra low loss cable: ALSR400 low loss construction preserves signal over the 20 ft run so antenna relocation has minimal impact on reception.
• Quick installation: Screw-on N and RP-SMA terminations are familiar and let users reposition antennas without special tools or permanent modifications.
• Wide application: Works with Helium miners and popular hotspots as well as 4G/Cellular routers, ADS-B receivers and ham radio gear for multi-use deployments.
• Outdoor ready use: Designed to link external antennas on vehicles, buildings or masts so devices can be placed for cleaner line-of-sight.

Who It's For

The cable is aimed at Helium hotspot owners, network integrators and hobbyists who run Nebra, BOBCAT, RAK, SyncroBit or SenseCAP devices and need to move an antenna to a roof, pole or vehicle. It is also a good fit for anyone using a cellular gateway, RTL-SDR or ADS-B receiver that benefits from a remote antenna placement.

Users who need very long runs beyond 20 ft or a specific waterproof bulkhead feed should look elsewhere or consider additional connectors and weatherproofing. Likewise, if a device uses a proprietary connector other than RP-SMA, SMA or N type, an alternate cable will be required.

Pros & Cons

Pros

• Ultra low loss ALSR400 construction keeps antenna signal strong across the 20 ft length.
• Wide compatibility with N female antennas and RP-SMA/SMA devices, plus the included adapter.
• Easy screw-on connectors make installation fast for rooftop or vehicle mounting.
• Multipurpose use across LoRa, cellular routers, ADS-B and ham radio devices.

Cons

• Fixed 20 ft length may be longer or shorter than some installations require; no on-the-fly length adjustment.
• Weatherproofing at connector joints depends on installation technique; additional sealing may be needed outdoors long-term.

Specifications

Cable length	20 ft
Cable type	ALSR400 ultra low loss extension
Primary connector	N female to RP-SMA male
Included adapter	RP-SMA female to SMA male
Compatible devices	Helium hotspots, BOBCAT, Nebra, RAK, SyncroBit, SenseCAP, Kerlink
Applications	LoRa, LPWA, Sigfox, 4G LTE routers, ADS-B, RTL-SDR, ham radio

Our Verdict

The Bingfu 20 ft ALSR400 extension cable is a sensible, cost-effective tool for anyone needing to move a LoRa or cellular antenna without losing performance. Its ultra low loss construction and included adapter make it especially useful for Helium hotspot owners and integrators who want reliable reception. With careful weatherproofing at connectors, it delivers good value for relocations and multi-use radio setups.

Frequently Asked Questions

Will this cable connect an outdoor N type antenna to my BOBCAT miner?
Yes, the N female to RP-SMA male connection plus the included adapter lets you attach most N type antennas to BOBCAT and similar hotspots with RP-SMA or SMA female ports.

Is the 20 ft cable suitable for rooftop installs?
Yes, 20 ft is a common rooftop run and the ALSR400 low loss design preserves signal, but you should seal connector junctions for long-term weather protection.

Can this cable be used with cellular routers or ADS-B receivers?
Yes, it is compatible with a variety of devices including 4G LTE routers, cellular gateways, RTL-SDR and ADS-B receivers thanks to the N to RP-SMA/SMA adapter options.