Make
World Radio Labs
Model
SWR-FS2
WRL SWR-FS2
Overview
The WRL SWR-FS2 is an SWR and field strength meter designed for use with radio transmitters and antenna systems. It allows operators to measure standing wave ratio (SWR) to evaluate antenna matching, as well as relative RF field strength for tuning and adjustment purposes. The unit was marketed for amateur radio and Citizens Band use.
Technical Specifications
| Item | Details |
|---|---|
| Model | SWR-FS2 |
| Manufacturer | World Radio Laboratories (WRL) |
| Type | SWR / Field Strength Meter |
| Frequency Range | HF range (typically covering CB and amateur bands) |
| Functions | SWR measurement, relative field strength measurement |
| Meter Type | Analog meter movement |
| Connectors | SO-239 (UHF female) |
| Power Requirement | None (passive for SWR), internal battery for the field strength function |
Physical Description
The SWR-FS2 features a compact metal enclosure with a front-mounted analog meter display. The faceplate includes controls for function selection and calibration, typically labeled for SWR and field strength operation.
RF connections are provided through SO-239 connectors mounted on the rear panel for inline connection between the transmitter and antenna system. A telescoping or short whip antenna is commonly included or attached for field strength measurements.
The unit is designed for bench or portable use, with a simple layout intended for quick setup and adjustment of antenna systems.
History
The SWR-FS2 was produced by World Radio Laboratories as part of its line of test and accessory equipment for radio operators. It reflects the common dual-function meter design used during the period, combining SWR measurement with field strength indication in a single unit.
Such instruments were widely used during the peak years of CB and amateur radio activity, providing an accessible method for tuning antennas and monitoring transmitter performance without requiring more complex laboratory equipment.