The 84000/85000 series of duplexers and cavity filters from Eleading Technologies covers TETRA bands between 300?MHz and 470?MHz.

Typical of the duplexers is model 84305A, which covers the receive band 455–460?MHz and transmit band 465–470?MHz. Insertion loss is quoted as 1·2dB maximum over the full operating temperature range of –40 to +70?C and third-order intermodulation products are less than –135?dBc when measured with 2 × 43?dBm tones at 1?MHz spacing. Isolation between bands is 80?dB min. Rejection is 80?dB minimum and return loss is better than 20?dB over the full operating temperature range.

Physical dimensions are 223 × 168 × 88?mm maximum over the tuning screws.

These devices complement a range of TETRA-specific isolators and power amplifiers manufactured by Eleading Technologies. 

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