Quick Reference
RFC100A Coaxial Cable
50 Ohm • DC – 6 GHz
RFC-100A is a cost-effective thin 50-ohm coaxial cable equivalent in size to LMR-100A, offering solid performance for short internal connections and pigtails at a lower price point. A practical choice for budget-conscious builds where cable runs are under 10 feet, such as WiFi module connections, GPS pigtails, and compact RF assemblies.
RFC100A Attenuation
Signal loss in dB per 100 ft at standard RF frequencies.
| Frequency | Loss / 100 ft | Loss / ft | 6 ft | 25 ft | 50 ft | 100 ft |
|---|---|---|---|---|---|---|
| 100 MHz | 5.3 dB | 0.053 dB | 0.32 dB | 1.33 dB | 2.65 dB | 5.3 dB |
| 450 MHz | 11.5 dB | 0.115 dB | 0.69 dB | 2.88 dB | 5.75 dB | 11.5 dB |
| 900 MHz | 16.5 dB | 0.165 dB | 0.99 dB | 4.13 dB | 8.25 dB | 16.5 dB |
| 1.8 GHz | 24.5 dB | 0.245 dB | 1.47 dB | 6.13 dB | 12.25 dB | 24.5 dB |
| 2.4 GHz | 29 dB | 0.29 dB | 1.74 dB | 7.25 dB | 14.5 dB | 29 dB |
| 5.8 GHz | 49 dB | 0.49 dB | 2.94 dB | 12.25 dB | 24.5 dB | 49 dB |
RFC100A Power Handling
Approximate maximum continuous power (CW) at 25°C ambient.
| Frequency | Max Power (W) |
|---|---|
| 100 MHz | 50 W |
| 450 MHz | 22 W |
| 900 MHz | 15 W |
| 1.8 GHz | 10 W |
| 2.4 GHz | 8 W |
| 5.8 GHz | 4 W |
Construction & Materials
Center Conductor
Bare copper clad steel, 0.93mm
The center conductor carries the RF signal. Material and diameter affect DC resistance, skin effect losses, and overall attenuation.
Dielectric
Foamed PE
The dielectric insulator separates the center conductor from the shield. PTFE dielectrics offer superior temperature stability and lower loss versus polyethylene.
Shield
Aluminum foil + tinned copper braid
The outer conductor provides the return path and shields the signal from external interference. More braid coverage means better EMI rejection.
Jacket
PVC
The outer jacket protects the cable from physical damage, UV, chemicals, and moisture. PTFE and FEP jackets handle higher temperatures than PVC.
Velocity Factor
82% (c)
How fast the signal travels relative to the speed of light in vacuum. Higher velocity factor means shorter electrical wavelength per foot — important for phased array and delay-matched applications.
Max Voltage
600 VRMS
The maximum continuous operating voltage. Exceeding this can cause dielectric breakdown. Relevant for high-power transmitters and pulse applications.
Available RFC100A Assemblies
Choose a connector combination to see pricing and order. All assemblies are hand-built and ship free within the USA.
SMA MALE to SMA MALE
From $7.99
SMA FEMALE to SMA MALE
From $7.99
RP-SMA MALE to SMA MALE
From $7.99
RP-SMA FEMALE to SMA MALE
From $7.99
N MALE to SMA MALE
From $8.49
N FEMALE to SMA MALE
From $8.49
BNC MALE to SMA MALE
From $8.99
MCX MALE to SMA MALE
From $7.99
RP-TNC MALE to SMA MALE
From $7.99
SMA MALE to TNC MALE
From $7.99
F MALE to SMA MALE
From $8.99
F FEMALE to SMA MALE
From $8.99
FME MALE to SMA MALE
From $8.99
FME FEMALE to SMA MALE
From $8.99
PL259 UHF Male to SMA MALE
From $9.99
SMA MALE to SO239 UHF Female
From $9.99
BNC FEMALE to SMA MALE
From $8.99
SMA FEMALE to SMA FEMALE
From $7.99
135 more configurations available on the RFC100A page.
Frequently Asked Questions
What is the impedance of RFC100A?
RFC100A is a 50 Ohm coaxial cable. All standard RF systems (antennas, transceivers, test equipment) use 50-ohm impedance, so RFC100A connects directly without any matching network.
What frequency range does RFC100A support?
RFC100A is rated DC – 6 GHz. At higher frequencies, the attenuation per foot increases, so actual usable range depends on acceptable signal loss for your application.
How much signal loss does RFC100A have?
RFC100A has 5.3 dB of attenuation per 100 ft at 100 MHz, rising to 49 dB per 100 ft at 5.8 GHz. Use the attenuation table above to calculate loss for any specific length and frequency.
Are CoaxRF RFC100A cable assemblies made in the USA?
Yes. Every RFC100A assembly is hand-terminated and continuity tested at our US facility. We build each cable to order — nothing is pre-made or drop-shipped from overseas.
Can I order a custom length of RFC100A?
Yes. In addition to our standard lengths (1, 6, 25, 50, 100 ft and longer), we accept custom-length orders through the Cable Builder. Custom assemblies ship within 1–2 business days.