Hotspot, Repeater PCB, Module or Complete Repeater?
Hotspot, Repeater PCB, Module or Complete Repeater?
Choose by station function, RF output, filtering responsibility and product-compliance boundary—not by a vague “hotspot versus transceiver” label.
A hotspot is a finished short-range station; a repeater PCB or module is an integration building block; a complete repeater is a finished radio product. Those distinctions decide who must add RF filtering, enclosure, thermal management, power integrity and final-system conformity work.
The current RF.Guru range in one view: the finished hotspot provides 500 mW in an aluminium enclosure and carries CE marking. Repeater PCBs provide 500 mW or 2 W and are filterless. The 2 W repeater module is also filterless and supplied in aluminium, but is not yet listed online. Within the repeater range, only the complete repeater with its built-in PA is the finalized CE-marked product described as compliant with the Radio Equipment Directive.
Choose the Product Level, Not Just the RF Power
| Option | RF output | Mechanical form | Filtering and conformity boundary | Best fit |
|---|---|---|---|---|
| Finished hotspot | 500 mW | Finished aluminium enclosure | CE-marked RF.Guru product | A compact personal hotspot or network-linked RF endpoint |
| Repeater PCB | 500 mW or 2 W | Board-level building block | Filterless; the integrator must design the required filtering and validate the finished equipment | A custom repeater, controller or station built by an experienced integrator |
| Repeater module | 2 W | Aluminium module; not yet listed online | Filterless; the module is not represented as the finalized CE-marked repeater | A mechanically protected RF building block for a larger engineered system |
| Complete repeater | Defined by the finished configuration | Finalized product with built-in PA | CE marked and described by RF.Guru as compliant with Directive 2014/53/EU (RED) | A complete installation when a finished RF product is required |
See the current RF.Guru hotspot collection for finished hotspot products. For integrator-level hardware, see Build Your Own Repeater: HATs, Controllers and Smart Interfaces. The 2 W repeater module is intentionally described here for planning but is not yet presented as an online product listing.
Hotspot, Gateway and Repeater Describe Different Things
| Term | What it describes | Engineering consequence |
|---|---|---|
| Hotspot | A local RF endpoint, usually connected to a network service | Short-range operation still needs a clean transmitter, usable receiver, suitable antenna and lawful configuration |
| Gateway | A function that bridges RF traffic to another network or service | The gateway role may be provided by software running with hotspot or repeater hardware |
| Repeater | A station that receives and retransmits traffic | Receiver desense, transmit noise, filtering, isolation, duty cycle and control behavior become system-level requirements |
| PCB or module | A physical integration level | It does not by itself define the complete station, antenna path or finished-product conformity |
The words are not interchangeable. A hotspot can contain a transmitter and receiver, and therefore transceiver circuitry, while “gateway” describes what the station does with the traffic. A repeater PCB can implement an RF path without being a complete repeater installation. Start by specifying the operating role, then select the appropriate hardware level.
What 500 mW and 2 W Mean
500 mW = 0.5 W ≈ 27 dBm
2 W ≈ 33 dBm
2 W / 0.5 W = 4, a difference of approximately 6 dB
Four times the transmitter power does not mean four times the useful range. In an ideal free-space downlink with every other variable fixed, a 6 dB increase corresponds to roughly twice the distance. Real installations are usually limited by the weaker direction of the two-way link, antenna placement, feed-line loss, walls, local noise, receiver threshold, blocking and desense.
A 500 mW hotspot can be the better engineering choice when the goal is a compact personal coverage area. A 2 W repeater PCB or module provides more transmitter headroom for an integrated station, but it also increases the importance of thermal design, supply quality, transmitter filtering, receiver protection and antenna-system verification.
Filterless Repeater Hardware Makes the Integrator Responsible
The 500 mW and 2 W repeater PCBs and the 2 W repeater module are intentionally supplied without application-specific RF filtering. This makes them flexible building blocks, but the finished station must not be treated as complete merely because the RF board can transmit and receive.
The integrator must select and verify the filtering needed for the actual band, channel plan, duplex spacing, site and antenna arrangement. Depending on the installation, that can include:
- transmitter low-pass or band-pass filtering for harmonics and out-of-band energy;
- receiver preselection to reject strong off-channel signals;
- duplexers, cavities or separate-antenna isolation for simultaneous receive and transmit;
- control of PA broadband noise and oscillator noise at the receive frequency;
- conducted and radiated EMC control at power, data, audio and enclosure interfaces; and
- verification under maximum intended RF output, duty cycle, temperature and supply conditions.
A filterless PCB or module is not a plug-and-play repeater. At a shared site, transmitter noise or insufficient isolation can desensitize the local receiver even when the wanted transmit signal is on the correct frequency. Measure residual receiver performance while transmitting in the final configuration.
Aluminium Helps Mechanically, but It Does Not Finish the RF Design
The current finished hotspots and repeater modules use aluminium enclosures. That provides a robust mechanical and conductive housing, but useful shielding still depends on the complete current path: seams, covers, connector bonding, apertures, cable shields, PCB return paths and external leads all matter.
For a PCB-level build, the integrator must define the enclosure and cable-entry design. For a module-level build, the module enclosure protects the module itself, but the larger station still needs correct bonding, filtering, power distribution, cooling and interface control. Enclosure material alone is not a substitute for conducted and radiated testing of the finished equipment.
CE Marking Belongs to an Identified Finished Product
For radio equipment placed on the EU market, the manufacturer is responsible for the applicable conformity assessment, technical documentation, EU Declaration of Conformity and CE marking. The Declaration of Conformity identifies the radio-equipment type and the legislation and technical specifications used to demonstrate conformity.
The finished RF.Guru hotspot is CE marked. Within the repeater range, the bare repeater PCBs and the filterless 2 W module are integration building blocks; they are not represented here as the finalized CE-marked repeater. The complete repeater—with its built-in PA—is the finalized RF.Guru repeater product described as CE marked and RED compliant.
If a customer incorporates a PCB or module into a different enclosure, changes the RF path, adds a PA, selects filters, changes antennas or modifies control software, the resulting equipment must be assessed as the resulting configuration. A CE mark or declaration for one identified finished product should not be copied onto a materially different integrator-built system.
Keep product conformity and operating permission separate. CE/RED conformity concerns equipment made available on the EU market. The operator remains responsible for authorized frequencies, power, identification, station control and any conditions for automatic or unattended operation at the installation location.
A Practical Selection Path
- Define the station function. Decide whether this is a personal hotspot, a network gateway, a simplex node or a repeater.
- Choose the integration level. Select a finished hotspot when you need a complete compact product; select a PCB or module only when you will engineer the rest of the station.
- Choose the power deliberately. Use 500 mW or 2 W from a two-way link budget, not from the assumption that more power automatically fixes coverage.
- Design the RF environment. Specify the band, channel spacing, antenna system, duplex isolation, receiver preselection and transmitter filtering.
- Test the complete station. Verify output spectrum, receiver sensitivity while transmitting, thermal behavior, restart behavior, timeouts and remote shutdown.
- Close the conformity and authorization boundary. Identify who is responsible for the finished equipment and confirm the operating permissions for the deployed station.
Official References
- Directive 2014/53/EU on radio equipment: essential requirements, manufacturer obligations, EU Declaration of Conformity and CE-marking rules.
- European Commission CE-marking guidance for manufacturers: responsibility for conformity assessment, technical documentation, declaration and marking.
Mini-FAQ
- What is the output power of the current hotspot? The current finished RF.Guru hotspot provides 500 mW and is supplied in an aluminium enclosure.
- Which repeater PCB power levels are available? Repeater PCBs are available in 500 mW and 2 W versions.
- Is the 2 W repeater module already on the website? No. The aluminium 2 W repeater module is included here for product planning but is not yet listed online.
- Do the repeater PCBs and module include RF filtering? No. They are filterless integration products; the integrator must add and validate the filtering required by the band, site and final station.
- Which RF.Guru repeater product is CE marked and RED compliant? Within the repeater range, the complete finalized repeater with its built-in PA is the CE-marked product described as RED compliant. The filterless PCBs and module are not presented as that finished repeater.
- Does CE marking authorize operation on any frequency? No. Equipment conformity and permission to operate are separate; frequency, power, station and control rules still apply.