Coaxial and RF Systems Protection
The Raycap RayCox and RayDat CP series is a family of in-line SPDs developed for the protection of coaxial and RF systems against lightning-induced surges. It protects TV sets, antenna amplifiers, CCTV/CATV systems, and RF antenna systems. It offers frequencies up to 6 GHz, 50 Ω and 75 Ω impedance options, insertion loss as low as < 0.2 dB, and BNC, N, 7/16, TNC, UHF, F, IEC TV connector types. All feature robust metal housings.
Surge protection in satellite reception systems or at building entrances is essential to prevent RF and security system signal loss during storms. For long cable runs, protection must also be provided on the receiver side.
Coaxial protection devices are designed to protect TV sets, antenna amplifiers, CCTV/CATV systems, and RF antenna systems and are suitable for frequencies up to 6 GHz.
The most critical design constraint for RF protection devices is that the device must not degrade the signal while protecting the line. Raycap solves this with low-capacitance gas discharge tubes (GDT) and high-quality termination connectors — ensuring minimum insertion loss across the frequency band. Values: < 0.4 dB (most series), < 0.2 dB (7/16 series). Return loss is > 20 dB.
Devices are designed to meet 50 Ω or 75 Ω typical impedance requirements. Easy installation is provided with different connector types such as BNC, IEC TV, 7/16, N, TNC, UHF, and SMA. F-F (female-female) and M-F (male-female) variants are available.
Product families:
RayCox BNC Series — for Analog video surveillance (CCTV) systems. 10 V and 24 V DC versions, 100 MHz cutoff frequency, 16 Mbit/s transmission rate. GDT + bidirectional TVS diode hybrid structure.
RayCox IEC 48 / F 48 — for TV and cable TV. 40–860 MHz frequency range, IEC TV or F connector. MOV + inductance + capacitor structure.
RayDat CP BNC / N / UHF Series — 50 Ω general-purpose RF protection. 70 V, 180 V, 280 V voltage and 40 W, 125 W, 300 W peak power options. BNC and N: DC–2.6 GHz, UHF: DC–600 MHz.
RayDat CP 7/16 Series — for High-power telecom applications. Bulkhead mounting, DC–2.5 GHz, lowest insertion loss (< 0.2 dB).
RayDat CP N-6G / TNC-6G Series — for High-frequency applications. DC–6.0 GHz, 180 V / 125 W. Suitable for 5G and modern wireless systems.
RayDat CP F75 / TV75 Series — for 75 Ω systems. DC–2.0 GHz, F or TV connector. Satellite and TV distribution systems.
All CP series coaxial cable protectors are designed in accordance with IEC 61643-21:2012 standard. Discharge capacity for the CP series is In 10 kA, Imax 20 kA (8/20 µs). Insulation resistance is > 10 GΩ. Operating temperature is -40 °C … +80 °C, protection class is IP 20.
Common features
- Very high impulse current ratings (In 10 kA, Imax 20 kA)
- Various connector types — BNC, IEC TV, 7/16, N, TNC, UHF, F, SMA
- High frequency range — up to 6 GHz
- Robust metal housing
- 50 Ω and 75 Ω impedance options
- Low-capacitance gas discharge tube (GDT) — prevents signal degradation
- High-quality termination connectors
- Minimum insertion loss — < 0.4 dB (in 7/16 series < 0.2 dB)
- Return loss > 20 dB
- Insulation resistance: > 10 GΩ
- F-F (female-female) and M-F (male-female) variants
- In-line or bulkhead mounting
- Shielded housing, direct shield grounding
- Protection class: IP 20 (embedded)
- Operating temperature: -40 °C … +80 °C
- Classification: C1 / C2 / C3
- Standard: IEC/EN 61643-21:2012
RayCox BNC Series (analog CCTV)
| BNC 5 | BNC 12 | |
|---|---|---|
| Nominal operating voltage Un | 10 V DC | 24 V DC |
| Max. continuous operating voltage Uc | 12 V | 28 V |
| Nominal operating current IL (25 °C) | 100 mA | 100 mA |
| In (8/20 µs) | 10 kA | 10 kA |
| Imax (8/20 µs) | 20 kA | 20 kA |
| Residual voltage @5 kA (conductor-shield) Ures | < 35 V | < 65 V |
| Response time tA (conductor-shield / shield-ground) | < 10 ns / < 100 ns | |
| Series resistance R | 9 – 11 Ω | |
| Capacitance (conductor-shield / shield-ground) | 30 pF / 1 pF | |
| Cutoff frequency fG | 100 MHz | |
| Transmission rate | 16 Mbit/s | |
| Connector | BNC | |
| Weight | 58 g | |
| Order code | 7050.22 | 7050.13 |
RayCox IEC 48 / F 48 (TV and cable TV)
| IEC 48 | F 48 | |
|---|---|---|
| Nominal operating voltage Un | 48 V DC | 48 V DC |
| Max. continuous operating voltage Uc | 60 V | 60 V |
| Nominal operating current IL | 100 mA | 100 mA |
| In (8/20 µs) | 5 kA | 5 kA |
| Residual voltage @5 kA Ures | < 500 V | < 500 V |
| Response time tA | < 25 ns | < 25 ns |
| Series resistance R | < 0.1 Ω | < 0.1 Ω |
| Frequency range fG | 40 – 860 MHz | 40 – 860 MHz |
| Connector | IEC TV | F |
| Weight | 32 g | 32 g |
| Order code | 125 093 | 125 094 |
RayDat CP Series Comparison
| Series | Impedance | Frequency range | Uc | Pmax | Insertion loss | Connector | Mounting |
|---|---|---|---|---|---|---|---|
| CP BNC | 50 Ω | DC – 2.6 GHz | 70/180/280 V | 40/125/300 W | < 0.4 dB | BNC (F-F, M-F) | In-line |
| CP 7/16 | 50 Ω | DC – 2.5 GHz | 70/180/280 V | 40/125/300 W | < 0.2 dB | 7/16 (M-F) | Bulkhead |
| CP N | 50 Ω | DC – 2.6 GHz | 70/180/280 V | 40/125/300 W | < 0.4 dB | N (F-F, M-F) | In-line |
| CP N-6G | 50 Ω | DC – 6.0 GHz | 180 V | 125 W | < 0.4 dB | N (F-F, M-F) | Bulkhead |
| CP TNC-6G | 50 Ω | DC – 6.0 GHz | 180 V | 125 W | < 0.4 dB | TNC (F-F, M-F) | In-line |
| CP UHF | 50 Ω | DC – 600 MHz | 70/180/280 V | 40/125/300 W | < 0.4 dB | UHF (F-F, M-F) | In-line |
| CP F75 | 75 Ω | DC – 2.0 GHz | 70/180 V | 40/125 W | < 0.4 dB | F (F-F, M-F) | In-line |
| CP TV75 | 75 Ω | DC – 2.0 GHz | 70/180 V | 40/125 W | < 0.4 dB | TV (F-F, M-F) | In-line |
CP Series Common Electrical Values
- In (8/20 µs): 10 kA | Imax (8/20 µs): 20 kA
- Residual voltage Ures (1 kV/µs): 70 V → < 600 V | 180 V → < 700 V | 280 V → < 900 V
- Return loss RL: > 20 dB
- Insulation resistance Riso: > 10 GΩ
- Weight: 80 g (F75/TV75) – 218 g (7/16)
RayCox and RayDat CP series are used for the protection of coaxial and RF lines in:
- Satellite reception systems (LNB/dish antenna) — Building entrance and receiver side
- TV and cable TV (CATV) systems — 40–860 MHz distribution lines
- Antenna amplifiers (aerial amplifier) — Central antenna systems
- CCTV / analog video surveillance systems — Camera and recorder lines (RayCox BNC)
- RF antenna systems — Transmitter and receiver lines
- Telecom base stations — High-power 7/16 connections
- 5G and high-frequency wireless systems — Up to 6 GHz (N-6G, TNC-6G)
- Radio and amateur radio systems — Lines with UHF connectors
- Distributed antenna systems (DAS) — In-building coverage infrastructure
- Building entrance coaxial lines — As part of the lightning protection system
- Long coaxial cable routes — Both entrance and receiver side protection
- WLAN / access point antennas — Outdoor antenna connections
- GPS and GNSS antenna lines — Positioning systems
- Measurement and test systems — RF laboratory equipment
- Security systems — Prevention of signal loss during storms
