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40 ft. Antenna extension cable N-Male to N-Male LMR-400UF Ultra Flex for Nebra OUTDOOR

$79.97

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Low-loss N-male to N-male extension cable, Times Microwave LMR-400UF shielded. The cable is 40 feet long and is designed specifically to go between a Nebra Outdoor miner and our outdoor 915 Mhz miner antenna. If you have a Nebra Indoor or other miner, this will not have the correct connector.

We recommend this extension cable because this is a special 400-grade low-loss cable, and is made of Ultra Flex material from Times Microwave that allows for easier bending. If you are going straight up a pole, LMR-400 or equivalent will do, but Ultra Flex is a must if you must have a better bend radius. As the cable in between the antenna and device gets longer, you will experience gain loss. With lesser-grade shielded extension cables, the huge drop in gain will mean much worse performance. Our special low loss cable limits the cable loss factor and preserves the high gain of your antenna.

Compare gain loss of this cable:

915 MHz application: -1.5 dB (Helium mining/LoRa device)
WiFi 2.4 GHz application: -2.6 dB (standard home WiFi networking)
WiFi 5 GHz application: -4.1 dB (dual-band 2.4/5Ghz WiFi to 5 GHz networks)

Compare this to a cheaper RG-58 shielded cable of the same length- the gain-loss would be -6.2 dB for 915 MHz, -12 dB for 2.4 GHz WiFi, and a whopping -21 dB for 5 GHz WiFi. Essentially, an 8 dB antenna for example will hardly work at all with an RG-58 cable that is 40 feet long.

If you invested a lot in your antenna, it is worth the extra amount to get a 600-grade low loss cable to maximize your antenna performance at 100-foot cable length. This goes double for Helium mining- a higher loss cable means you may be getting less reach with your miner, and therefore mining much less.

Why does this cable cost more than other options I see online of the same length?

Cables with a lower grade shielding will cost less because they consume less raw materials and are cheaper to make. This cable is also three times heavier than a CFD-200 grade cable, for example, so the shipping cost is higher too- both on import and for shipment to the end-user.

Additional Features:

- Length: 40 feet
- Impedance: 50 OHM
- Frequency:all bands from 0-6 GHz, including 868-915 MHz LoRa, 2400-2700 MHz WiFi/ 5100 - 5900 MHz WiFi

- Compatible with 2.4 GHz 802.11ac, 802.11n, 802.11g and 802.11b WiFi standards, 915 MHz LoRa standard
- N-male connector on each end, designed exclusively for Nebra Outdoor and the Rokland 915 MHz mining antenna.

Warranty & Support:
Complimentary Telephone and Email/Live Chat Support (Click Here)


State sales tax of 7% will be added to FLORIDA purchases only. There is no sales tax for any other state.

Return Policy: This item is very heavy to ship each way. We guarantee it will be free from defects but are not able to offer free return shipping otherwise. Additionally, a heavy weight item restock fee of up to $30 on 600 grade cables may apply to cover our original shipping. Don't know for sure if this is the right cable? Call us now at (352) 372-9902 or hit the chat button in the bottom right. For bulk purchases, see our bulk purchase return policy here.

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