Hamplus AS-603A Smart Antenna Switch, 6 Antennas to 3 Radios

Hamplus AS-603A Automatic Antenna Switches are actually two very smart switches in one. They select one of three radio ports and one of six antenna ports for the selected radio to use, manually or automatically! Operation is individual; only the selected radio port has access to the selected antenna and unused antennas are automatically grounded. Illuminated and internally labeled momentary push buttons for each antenna and radio selection let you know how your equipment is connected at a glance.

Hamplus AS-603A Front Panel

Here is why the AS-603A is a fantastic Automatic Smart Switch: The selected radio’s frequency information is read by the AS-603 and it automatically switches to the last memorized antenna port selection for that frequency range. This means that completely different antennas that properly cover different band segments are easily and automatically selected by simply changing the frequency on the radio or even by selecting a different radio. The days of simplistic band decoders are gone.

Hamplus AS-603A Antena Switch Breakout Box

How does the AS-603A do that? It comes with a breakout box for connection of individual data interface cables from all three radios. They can all be the same or they can all be different types of transceivers! Using the optional cables listed in Suggested Parts, the AS-603A supports communication via Icom CI-V Remote port, and via RS-232 COM port for Kenwood, Elecraft K3, Yaesu or another radio that uses one of those communication protocols.

These switches are relay controlled and handle up to 2 kW at low SWR over the entire RF spectrum up through 60 MHz. This allows the connection of each radio port to separate amplifier and radio combinations. When you have several antenna cables that need to be connected to more than one radio in your shack, Hamplus AS-603A Automatic Antenna Switches are ready to streamline your operations.

Hamplus AS-603A rear view

Here are the highlights of the Hamplus AS-603A:

• Automatic Desktop Smart Antenna Switch with six antenna inputs for three radio outputs
• Intelligent frequency decoder and antenna memory*
• Compatible with Elecraft, Kenwood, Yaesu and Icom*
• Illuminated indicator push button controls operate internal RF relays
• Non-simultaneous operation - one antenna to one radio
• Allows "split" operations - transmit and receive on separate antennas
• Aluminum cabinet painted dark gray
• SO-239 (UHF female) RF connectors
• 2000 watts power handling at SWR of 1.5:1 or less
• DC to 60 MHz frequency coverage
• 72 dB port isolation at 30 MHz
• Operates on 13.8 Vdc input
• All antenna inputs are switched to ground when not selected or power is switched off