Product Summary

2×6 Relay Board

• Dimensions: 10.1875″ x 6.5″
• High quality FR4 double sided 2oz copper, masked, and silk screened both sides
• Designed to handle 1500W with headroom at reasonable VSWR
• 50 Ohm stripline RF distribution
• 12V activated relays
• 50 Ohm termination on unused antennas to reduce reradiation and unwanted internal coupling
• Impossible for one radio to transmit directly into another
• Worst case port to port isolation >61dB!

Dual Band Decoder / Controller Board

• Dimensions: 6.125″ x 4.0″
• High quality FR4 double sided, masked, and silk screened both sides
• Logical lock-out prevents a radio from “stealing” an antenna already in use
• BCD Band Decoder support
• Designed in sections, so you can build only what you need
  • AC to DC regulator section (use if not providing +12V)
  • Radio band decoder section for auto switching
  • Basic switch input and relay control section
• Discrete pin in hole component design
• Supports 2×6 board only

2×8 Relay Board

• Dimensions: 13.1875″ x 6.5″
• High quality FR4 double sided 2oz copper, masked, and silk screened both sides
• Designed to handle 1500W with headroom at reasonable VSWR
• 50 Ohm stripline RF distribution
• 12V activated relays
• 50 Ohm termination on unused antennas to reduce reradiation and unwanted internal coupling
• Impossible for one radio to transmit directly into another
• Worst case port to port isolation >61dB!

FreqEZ BY K8UT

K8UT became a Silent Key 14-AUG-2024. Availability is unknown

FreqEZ Band Decoder is available from Larry, K8UT. It is a combination hardware/software project that provides highly configurable Band Decoding and Remote Antenna selection

• Automatic antenna selection from network-based UDP packets or hard-wired BCD inputs
  • In N1MM+ – use the antenna numbers from the Configurer Antenna table
  • Supports the N1MM+ Keyboard Shortcut for multiple antennas per band by toggling <alt>+F9
  • In Logger 32, DXLab, Log4OM, UcxLog, TR4Win or N1MM+ – use the Tx radio frequency from the UDP RadioInfo packet
• Manual antenna selection with simple mouse clicks in the Windows FreqEZ Console
• Hard-wired method, for logging programs that do not support UDP broadcasts

Icom Decoder Daughter Card

DISCONTINUED
NTE1508 is difficult to find
(contact me if this interests you)

• Dimensions: 1.8″ x 1.3″
• A fully opto-isolated interface between an Icom radios analog voltage band data output and the Antenna Switch Controller
• Designed as a “daughter card” which plugs into the CD4028 socket of one or the other port of the controller
• Takes the place of all the components of one of the two decoders
• Can be used as a stand-alone decoder as well!