The Sharman AV-SW3M is a three-way coaxial switch designed for amateur radio installations where convenient selection between multiple antennas or RF paths is required.
It features one common port and three selectable ports, all fitted with SO-239 connectors, allowing up to three different antennas to be connected to a single transceiver or, depending on the installation, one of three RF paths to be selected.
With a frequency range of DC to 800 MHz, the AV-SW3M is suitable for HF, VHF and UHF applications. Its rotary selector provides quick and straightforward switching between the three available positions.
The metal enclosure and mounting points make it suitable for permanent installation in the radio shack, on a workbench or as part of a fixed RF installation.
Power handling varies according to frequency and reaches up to 1,500 W on HF.
Specifications
- Type: 3-way coaxial antenna switch
- Frequency Range: DC – 800 MHz
- Connections: 4 × SO-239
- Selectable Positions: 3
- Maximum Power:
- DC – 30 MHz: 1,500 W
- 30 – 200 MHz: 1,000 W
- 200 – 500 MHz: 500 W
- 500 – 800 MHz: 250 W
- Insertion Loss: approximately 0.05 dB up to 500 MHz
- Insertion Loss 500–800 MHz: approximately 0.1 dB
- Isolation: up to approximately 70 dB, depending on frequency
- Connector Type: SO-239
- Suitable for: HF / VHF / UHF
- Construction: Metal enclosure
- Selection: Rotary switch
The Sharman AV-SW3M is a practical solution for stations using multiple antennas, allowing quick antenna selection without repeatedly disconnecting and reconnecting coaxial cables.
