Yaesu FT-818

The Yaesu FT-818 is one of the smallest MF/HF/VHF/UHF multimode general-coverage amateur radio transceivers. The set is built by the Japanese Yaesu Musen Co., Ltd. [1] With internal battery pack, on board keyer, its all mode/all band capability and flexible antenna, the set is particularly well suited for portable use. [2]

Technical description

The FT-818 incorporates all the many basic and attractive features of the ever-popular FT-817ND while providing upgrades desired by many existing owners. The FT-818 provides 6W of solid output power with an external DC power source. The supplied Ni-MH battery pack (SBR-32MH) has been upgraded to now provide larger battery capacity - 9.6v/ 1900mAh. The recent launch of several new satellites is a certain indicator that the large global community of satellite enthusiast are going to be very delighted to learn that the FT-818 includes a Built-in TCXO-9 oscillator that gives the FT-818 fantastic frequency stability (±0.5ppm).

Technical Specifications[2]
  • RX Freq coverage: 100 kHz-30 MHz, 50 MHz-54 MHz, 76 MHz-154 MHz, 420 MHz-470 MHz
  • TX Freq coverage: 160 - 6 Meters, 2 Meters, 70 Centimeters (Amateur bands only), 5.1675 MHz Alaskan Emergency Frequency (USA only)
  • Power consumption: 13.8 V DC @ transmit 2.7A, @ receive 450mA. *Operating voltage range: within 8.0 - 16.0V (AA alkaline batteries: 12.0V; Ni-MH battery: 9.6V)
  • Tuning steps: 100 Hz AM, FM; 10 Hz SSB, CW
  • Dimensions: 135 x 38 x 165 mm
  • Weight appx.: 900g
  • Emission: CW, SSB, AM, FM, Digital mode
  • Power output: 6W (SSB,CW,FM), 2W (AM, carrier) @ 13.8V
  • Carrier suppression: better than 40 dB below rated output
  • Opp. sideband suppression: better than 50 dB below peak output
  • Spurious Radiation: –50 dB (1.8-29.7 MHz)

–60 dB (50/144/430 MHz)

  • Transmitter freq response: 400 – 2600 Hz (-6 dB)
  • Stability: ±0.5 ppm
  • Ant output impedance: 50 Ohms unbalanced (front BNC connector, rear UHF (SO-239) connector)
  • Microphone output impedance: 200-10k Ohms (Nominal: 600 Ohms)
  • Image rejection: HF/50 MHz: 70 dB, 144/430 MHz: 60 dB
  • IF rejection: 60 dB
  • Selectivity: -6 dB 2.2 kHz, -60 dB 4.5 kHz
  • Audio output: 1 W @ 10% THD, 8 Ohms

References
  1. Yaesu FT-818
  2. Yaesu FT-818 Operating Manual
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