20″ inch antenna extension coaxial cable N-male to N-female 400 low loss

Low-loss N-male to N-female extension cable- this is RFC-400 shielded (read about RFC vs. LMR). The cable is 20 inches long. It can be used with Nebra Outdoor and Milesight Helium miners if connecting to an N-male antenna, and has applications in WiFi and Meshtastic as well.

We recommend this extension cable compared to some others online because this is a special 400-grade low-loss cable. The antenna to which you will connect this to has a gain. Let’s say you will be connecting this to an 8 dBi gain antenna. 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.

Made in the USA. This cable is American-made and manufactured for superior performance and quality control.

We do recommend RokTape to seal all outdoor connection points.

Compare gain loss:
915 MHz application: -0.063 dB (Helium/LoRa device)
WiFi 2.4 GHz application: -0.106 dB (standard home WiFi networking)
WiFi 5 GHz application: -0.175 dB (dual-band 2.4/5 GHz WiFi to 5 GHz networks)

Compare this to a cheaper RG-58 shielded cable of the same length- the gain-loss would be -0.271 dB for 915 MHz, -0.52 dB for 2.4 GHz WiFi, and a whopping -0.99 dBi for 5 GHz WiFi

That means standard RG-58 cables have about 3x times as much gain loss as this cable!

If you invested a lot in your antenna, it is worth the extra amount to get a 400-grade low-loss cable to maximize your antenna performance. 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 the other options I see online?

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: 3m (10 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
– Compatible with many WiFi adapters & Helium miners with RP-SMA ports

Frequently Asked Question:

1. I already have (or want to buy) an external antenna for my wireless adapter, and I want an extension cable so I can put my antenna further away from the adapter. How do I know if this is the right extension cable for me?

Check with the maker or seller of your antenna to find out what type of connector it has. As a rule of thumb, you want to get an RP-SMA male to RP-SMA female extension cable when the antenna you have can connect directly to the RP-SMA connector on your wireless adapter if you wanted it to. That would mean your antenna also has an RP-SMA connector, and this would be the right cable for you. If your antenna has another type of connector, meaning it is not possible for you to connect it directly to the RP-SMA connector on your wireless adapter, then please contact us so we can help you locate the right cable for your needs. Additionally, we always recommend getting as close to the length you need as possible. If you are only trying to go 10 feet, don’t buy a 30-foot cable as you will have more gain loss than you need.

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

State sales tax of 7.5% will be added to FLORIDA purchases only. There is no sales tax for any other state.

Return Policy: This item is a final sale item. Final sale items may not be returned except in cases of defect. Expedited shipping charges paid are non-refundable. 

Sales tax is required in many states and will be added at checkout if applicable to your delivery state. Tax exempt forms can be sent to our support department.