Diamond's RH-770 is a telescopic antenna for portable transceivers and covers 144 and 430MHz in transmit and 300MHz in receive.

Its gain is 3.0dB at 144MHz and 5.5dB at 430MHz and its height starts at 22.3cm and goes up to 93. It has a BNC-P connector, can handle power up to 20W and its impedance is 50Ω.

        Technical characteristics

  • Frequency range: 144/430MHz, (2m/70cm).
  • Gain: 3.0dB(144MHz),5.5dB(430MHz).
  • Maximum power: 20W.
  • Synthetic impedance: 50Ω.
  • Stations: less than 1.5:1.
  • Height: 93cm (original 22.3cm).
  • Weight: 85 grams.
  • Connector: BNC-P.
  • Type: 1/2wave radialless(144MHz), 2x5/8wave radialless (430MHz), 300MHz only in reception.


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