6 ft. Antenna extension coaxial cable RP-SMA male to N-male CFD-240 low loss
Pickup available at 3205 SW 40th Blvd Ste A
Usually ready in 1 hour
RP-SMA male to N male extension cable, 6-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.
We do recommend RokTape to seal all outdoor connection points.
Compare gain loss of this cable:
915 MHz application: -0.4 dB (Helium mining/LoRa device)
WiFi 2.4 GHz application: -0.7 dB (standard home WiFi networking)
WiFi 5 GHz application: -1.1 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 -0.8 dB for 915 MHz, -1.5 dB for 2.4 GHz WiFi, and a whopping -2.5 dB 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: 6 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)
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.
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.
*LMR is a registered trademark of Times Microwave
Shipping & Returns
FREE Standard shipping on all orders shipped in the USA!
*Effective September 1, 2026, free shipping applies to all orders $20 and over, with a $4.95 shipping charge on orders below $20
For over 20 years we've been able to offer free sitewide shipping in the USA, but with the latest massive postage rate hike, we are unable to do so on smaller value orders. Rate changes from USPS on July 12, 2026 erased ounce based pricing, so now a 2 ounce item ships at the same rate as a 2 lb one, in some cases almost double the cost.
We know shipping charges are not a fun experience, so we will still offer free shipping on all orders over $20.00 USD. For orders below this value, a flat $4.95 shipping assistance charge will apply. In many cases our actual ship cost will be higher, but by collecting this amount we can continue to offer low prices on smaller items like connectors and pigtails.
We are in Florida and ship to: USA, Australia, Austria, Canada, France, Germany, Israel, Netherlands, the United Kingdom, and other countries (see full list in cart).
Local pickup available in Gainesville, FL
Expedited shipping orders placed before 3PM EST weekdays will ship that day. Standard shipping orders ship within 1-2 business days.
Sales tax: shipments shipped to states in which we are registered to collect tax will have appropriate tax added at checkout. Tax exempt forms can be sent to our support staff who can activate exemption status.
Lost packages and insurance
Hawaii & International Shipping:
While Hawaii is not international, packages from our Florida location with free standard shipping may take up to a month. We suggest purchasing expedited air shipping for Hawaii (note batteries cannot be shipped by Air). International shipping options are visible in cart by using the shipping estimator. Transit times posted are estimates. International packages are subject to customs holds and duty payment may be required by your government on delivery. The cost of duty is not reimbursable. International shipping charges are not refundable in the event of a return.
Returns
See item description for product specific return policies, and return policies vary by item.
Bulk/High Value Order Returns
Due to the labour required to package and ship bulk orders, as well as cost and stock issues involved in replenishing items, bulk orders of 5 pieces or more are not returnable unless the equipment is defective or mis-advertised, or a return period is pre-negotiated. For non-defective returns over $500, a restocking fee may be deducted from the refund to cover bank or card processing fees.
Backorder/Preorder
Items on back order or pre-order will ship as estimated on the item page. You can cancel an order any time up until shipment. Orders with expedited shipping will arrive in the advertised time after the order ships, not after the order is placed.
Cancellations
If you want to cancel an order, please email or call us at (352) 372-9902. If your item has not been shipped, we will cancel the order and provide a full refund.
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