

📡 Elevate your wireless game with Proxicast’s ultra-low loss coax cable—because every decibel counts!
The Proxicast 25 ft SMA Male to N Male Premium 400 Series Coax Cable is a high-performance, double-shielded 50 Ohm cable engineered for superior 4G LTE and 5G signal transmission. Featuring gold-plated connectors and a rugged PE jacket, it delivers minimal signal loss and exceptional durability for professional-grade antenna and modem setups. Factory tested and compatible with a wide range of SMA and N-type devices, this cable is the go-to choice for reliable outdoor and indoor wireless connectivity.













| ASIN | B09K62357V |
| Best Sellers Rank | #26,089 in Electronics ( See Top 100 in Electronics ) #204 in Digital Audio Coaxial Cables |
| Brand | Proxicast |
| Brand Name | Proxicast |
| Cable Type | Coaxial |
| Color | 25 ft - CFD400 |
| Compatible Devices | Amplifier, Antenna, Booster, Modem, Router |
| Connector Gender | SMA Male to N Male |
| Connector Type | Sma Male to N Male |
| Customer Package Type | Flat Free Package |
| Customer Reviews | 4.5 out of 5 stars 662 Reviews |
| Data Transfer Rate | 1000000000 Gigabits Per Second |
| Indoor Outdoor Usage | Indoor, Outdoor |
| Item Shape | Round |
| Manufacturer | Proxicast |
| Model | ANT-140-420-25 |
| Model Name | ANT-140-420-25 |
| Number of Items | 1 |
| Number of Pins | 1 |
| Other Special Features of the Product | Low Loss |
| Outer Material | Plastic |
| Recommended Uses For Product | Connecting SMA devices to external antennas for 4G & 5G signals, Ham, ADS-B, and GPS systems |
| Special Feature | Low Loss |
| Specification Met | RoHS |
| UPC | 850021295004 |
| Unit Count | 1.0 Count |
P**E
Value!
As a hobbyist, I am always looking for the best bang for the buck. WIth cabling, we all learn the long and hard way that you get what you pay for. In this case, I am very happy to have 400 performance with a 240 cable. Its like consumer level hardline. Can't be beat for a pre-crimped solution. I'm lookig forward to my next project which will cause me to check the 50', but again, perfect!
V**L
High quality - try not to bend it
Probably similar to LMR400. Many of the antennas for sale come with an inferior cable. For ADS-B reception, for example, you won't get the range claimed with the cable that comes with the antenna if it's a fairly long cable, unless it's a high quality cable like this one.
W**N
Good quality. High price.
Pretty high dollar for the cord and the length that is is. But I wanted a solid cable with no adapters to screw directly in to my Mofi4500. They are working great. Making great signal now moving my Wilson antennas outside and mounting my Mofi4500 in my attic.
A**A
Solid low-loss cable—good build and stable signal
I bought this 15 ft SMA male to N male coax to extend a 4G/LTE antenna run, and it did exactly what I needed. The cable feels well-made (thick jacket, flexible enough to route cleanly) and the connectors thread on smoothly and seat tight without feeling flimsy or loose. Signal quality stayed stable compared to my shorter setup—no random drops or “wiggle sensitivity” once everything was tightened down. For a 15 ft run, the low-loss cable makes a noticeable difference versus cheap thin coax, especially if you’re trying to keep attenuation down. Tip: hand-tighten the connectors firmly (don’t over-torque), and avoid sharp bends near the ends to protect the braid/shielding. Overall, great option if you need extra length without sacrificing performance.
D**1
Works as should
Works as stated except with the Verizon Jetpack. Needed to order additional parts to connect it.
M**K
Ideal for Cellular Antenna Transmission Line
This coaxial cable and its connectors appear to be of high quality. Although I have not measured actual signal attenuation, I have no reason to believe that the loss over 50 feet is significantly greater than that of the brand-name (Times) LMR-400. The cable is quite rigid, but the rigidity does not preclude use as a feed line between an external antenna and a modem. The N connector matches many antennas, and the SMA connector at the other end matches most modems. Although an N-to-SMA adapter could be used on the modem end, N connectors require a rather large entry hole. The price of this assembly is about half what a major amateur radio supplier charges for an apparently similar product (with different connectors).
F**G
Excellent Quality, get the shortest run you need, longer isn't better amplifier may be required.
Extremely well made, somewhat rigid, good weather seal. I purchased two of these for my MOFI 4500 router/receiver and one had thinner wire coating than the other? Odd. BE AWARE, that if you are using this to bring a signal into your MOFI unit inside, 25 feet will possibly cause line attenuation which results in slower speeds and weak reception. In order to get the best performance out of these cables from antenna to MOFI, you will also need a signal booster/amplifier for each antenna which costs more than the antennas and cable combined. These do allow you to place antennas outside while having your router inside for easy access and signal enhancement. Get the shortest cables you need, longer cables require amplification for best performance. Very happy with the quality of these coax extension cables and I definitely recommend them.
D**2
Excellent Product
Product received in a timely manner and was as advertised, well made with professional connections. Product has been installed for four days linking a roof-mounted Waveform antenna to a AT&T Netgear M6 Pro hotspot. Cable was 50 ft in length. So far, I am seeing minimal attenuation (due to cable length) of the signal providing 4-5 bars of signal. The combination of the mounting height, external antenna and 50 ft cable has combined to transform Speedtest results of 20MB/sec download, 2 MB/sec upload (no external antenna) which was unusable for a home office involving video-conferencing) to 140 MB/sec download, 37MB/sec upload (with antenna.) I couldn't be more pleased. Would strongly recommend product.
Trustpilot
3 weeks ago
1 week ago