The **CA-RSPNMB** is a high-performance RF (Radio Frequency) coaxial cable assembly commonly used in wireless networking, telecommunications, and industrial IoT applications. The name itself is an alphanumeric code describing its physical and electrical interface. --- ### 1. Component Breakdown The part number typically breaks down into the following electronic components: | Segment | Meaning | Electronic Significance | | :--- | :--- | :--- | | **CA** | Cable Assembly | Refers to a pre-terminated coaxial cable. | | **RS** | Reverse Polarity (RP) | Indicates that the pin and socket configuration is swapped compared to standard connectors. | | **PNM** | SMA Plug (Male) | A sub-miniature version A connector with a center pin. | | **B** | Bulkhead / Type N | Usually refers to an **N-Type Male** connector on the opposite end. | ### 2. Technical Specifications The electronics of this assembly are designed to maintain signal integrity over high frequencies (typically up to 6 GHz). * **Impedance:** **50 Ohms**. This is critical for RF systems to prevent signal reflection (VSWR). * **Cable Type:** Generally uses low-loss series cables like **LMR-195** or **LMR-400** equivalents. * **Frequency Range:** DC to 6 GHz (covers Wi-Fi 2.4GHz, 5GHz, and LTE bands). * **V.S.W.R:** Typically ≤ 1.5:1, ensuring minimal power loss from the transmitter to the antenna. --- ### 3. Electronic Interface Details #### RP-SMA Connector (Side A) * **Type:** Reverse Polarity SMA Male. * **Electronic Role:** Common interface for Wi-Fi routers, access points, and radio modules. The "Reverse Polarity" is a regulatory design intended to prevent consumers from attaching high-gain professional antennas to consumer-grade equipment. #### N-Type Connector (Side B) * **Type:** N-Male. * **Electronic Role:** A larger, threaded, weatherproof connector. It is the industrial standard for connecting to outdoor antennas or high-power RF amplifiers because it handles high voltages and provides a secure mechanical connection. --- ### 4. Common Applications 1. **Wi-Fi Extension:** Connecting an indoor wireless router (RP-SMA) to an outdoor high-gain antenna (N-Type). 2. **SDR (Software Defined Radio):** Linking radio peripherals to filtered antenna arrays. 3. **Industrial IoT:** Connecting LoRaWAN or Helium gateways to external fiberglass antennas.