Cable
LMR400 ULTRA FLEX Times
End A
RP-SMA MALE
End B
TNC FEMALE
Specs Summary
6 ft LMR400 ULTRA FLEX Times — RP-SMA MALE to TNC FEMALE
LMR400 ULTRA FLEX Times cable assembly, 6 feet, with RP-SMA MALE and TNC FEMALE connectors. Hand-assembled, tested, and ships free within the US.
6 ft — RP-SMA MALE / TNC FEMALE
$44.93
Free shipping • In stock
Other lengths:
Signal Loss — 6 ft
Approximate insertion loss for this 6 ft LMR400 ULTRA FLEX Times assembly at common RF frequencies.
| Frequency | Loss / 100 ft | Loss — 6 ft |
|---|---|---|
| 100 MHz | 1.6 dB | 0.1 dB |
| 450 MHz | 3.5 dB | 0.21 dB |
| 900 MHz | 5 dB | 0.3 dB |
| 1.8 GHz | 7.2 dB | 0.43 dB |
| 2.4 GHz | 8.4 dB | 0.5 dB |
| 5.8 GHz | 13.8 dB | 0.83 dB |
About This Assembly
LMR400 ULTRA FLEX Times Cable
LMR-400-UltraFlex delivers the same industry-leading low-loss performance as standard LMR-400 but with a stranded center conductor and more flexible jacket. Practical for mobile platforms, rooftop cellular installs, and dense equipment racks where stiff hardline cable would be difficult to route without damage.
RP-SMA Connector
RP-SMA (Reverse Polarity SMA) uses the SMA threaded coupling mechanism but with the male/female pin convention reversed — the jack has a pin and the plug has a socket. Originally standardized to prevent connection of uncertified antennas to consumer WiFi equipment, RP-SMA is now the dominant connector on commercial WiFi routers, access points, and 2.4/5 GHz antennas.
TNC Connector
TNC (Threaded Neill–Concelman) is the threaded version of BNC, offering improved performance up to 11 GHz and better vibration resistance through its screw coupling. It is commonly used in mobile radio antennas, avionics, and outdoor installations where BNC's bayonet lock would not provide sufficient mechanical security.
Common Applications
This RP-SMA and TNC cable assembly is well suited for mobile radio installs, rooftop antenna runs, and rack-mounted equipment. The combination of reliable RP-SMA and TNC connectors and custom-cut cable length makes it a practical choice for both field installations and bench setups. Every assembly is hand-terminated, continuity tested, and ships free within the USA.
Frequently Asked Questions
Is this cable hand-assembled in the USA?
Yes. Every CoaxRF cable assembly is hand-terminated and continuity tested at our US facility before shipping. We do not drop-ship pre-made cables from overseas — each cable is built to order.
Can I order a different length than 6 ft?
Yes. This page is for the 6 ft assembly. Use the length buttons above to select a different standard length, or use the Cable Builder for any custom length.
How much signal loss will I see with this 6 ft cable?
At 1800 MHz, LMR400 ULTRA FLEX Times loses approximately 7.2 dB per 100 ft. This 6 ft assembly will have roughly 0.43 dB of insertion loss at that frequency. See the signal loss table for all frequency points.
What is the maximum frequency for this assembly?
This assembly is rated DC – 6 GHz. The effective frequency limit is set by the lowest-rated component — either the cable or one of the connectors. Both RP-SMA MALE and TNC FEMALE connectors must be within spec at your target frequency.
What is your return policy?
We accept returns within 30 days of delivery. Custom-length cables are accepted as long as they are in original condition. Contact us and we will provide a prepaid return label at no charge.
