RP-SMA male to N male extension cable, 20-foot length, CFD-240 (LMR-240* alternative) low loss shielding.

RP-SMA male connector on one end and a standard N male connector on the other end. We recommend this extension cable compared to some others online because this has a special CFD-240 low-loss cable. As the cable in between the antenna and adapter gets longer, you will experience cable loss, which is a drop in the signal gain of the antenna. Compared to standard RG-58 coax, CFD-240 shielded cables have less gain loss. For even less loss, check our 400-grade shielding options.

We do recommend RokTape to seal all outdoor connection points. 

Compare gain loss of this cable:
915 MHz application: -1.5 dB (Helium mining/LoRa device)
WiFi 2.4 GHz application: -2.5 dB (standard home WiFi networking)
WiFi 5 GHz application: -3.7 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 -3.1 dB for 915 MHz, -5.99 dB for 2.4 GHz WiFi, and a whopping -10.2 dBi for 5 GHz WiFi

That means standard RG-58 cables have over 2x 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 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.

Additional Features:
- Length: 6m (20 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 802.11ac, 802.11n, 802.11g and 802.11b WiFi standards, as well as LoRa 915 MHz
- Compatible with many WiFi adapters & Helium miners with RP-SMA ports

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: Coaxial cable may be returned for refund if new within 30 days of delivery. Used coaxial cable cannot be returned except in case of defect. We only cover return shipping in case of wrong item shipped. Returned orders with free shipping selected will incur a 15% recovery fee to help us recover some of the original shipping cost, unless the item is defective or incorrect. Expedited shipping charges paid are non-refundable. For bulk purchases, see our bulk purchase return policy here.

*LMR is a registered trademark of Times Microwave

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.