Genuine Telex spare parts for the BTR700 (also written BTR 700), BTR800 (also written BTR 800), and BTR80-N wireless intercom base stations. All parts are sourced directly and supplied by Showcomms, authorised Telex RTS reseller with over 20 years of experience in professional wireless intercom systems.

Full Duplex — Two Antennas Per Base Station

The BTR700 and BTR800 are full duplex wireless base stations, transmitting and receiving simultaneously on separate frequencies. Each base station requires two antennas — one for Tx (transmit) and one for Rx (receive). The beltpack also carries two antennas as the complementary pair: beltpack Tx matches base Rx frequency, and beltpack Rx matches base Tx frequency.

The frequency band your system operates on is printed on the back of the BTR700/BTR800 unit as a band letter (e.g. F3, H2, C4). Use the table below to identify which antenna colour you need for each position.

Antenna Colour by Band

Note: The beltpack antenna pair is the reverse of the base station — beltpack Tx matches base Rx, and beltpack Rx matches base Tx. Before ordering, always verify the band letter on your unit and check the colour bands on your existing antennas.

Antenna Specifications

• Type: ½ wave, rigid (non-flexible)
• Connector: TNC male (mounts directly to base station)
• Colour band located just above the knuckle

If you are unsure which antenna you need, please contact us with your band designation and we will point you in the right direction.