Source: rigpix
Transceivers
Updated: 09/02/2026
Yaesu FT-840
Confidence score: 50%
Estimated value
317€
Theoretical estimate
289€
Minimum
345€
Maximum
Specifications
GENERAL
- Type
- Amateur HF transceiver
- Frequency range
- TX: 10-160 m + WARC RX: 0.1-30 MHz
- Tuning steps
- 10 / 100 Hz, 1 KHz
- Frequency stability
- ±10 ppm @ 0 to 40°C (32 to 104°F) ±2 ppm with optional TCXO-4
- Mode
- AM / SSB / CW (FM option)
- Channels / memory management
- 90 regular 10 split/PMS RAM storage with lithium battery backup
- Repeater shift / offset
- ±0-500 KHz
- Power supply
- 13.5 VDC ±10%
- Current drain / power consumption
- RX: Max 1.4 A TX: Max 20 A
- Antenna impedance / connector
- 50 ohm / SO-239
- Dimensions (W*H*D)
- 238*93*243 mm (9.37*3.66*9.57")
- Weight
- 4.5 Kg (9.92 lb)
- Other features
- CTCSS/PL encoder. IF shift. NB. 12 dB attenuator. CAT control.
RECEIVER SECTION
- Receiver system
- Double conversion superheterodyne (AM/SSB/CW) 1st IF: 47.055 MHz 2nd IF: 8.215 MHz Triple conversion superheterodyne (FM), optional 1st IF: 47.055 MHz 2nd IF: 8.215 MHz 3rd IF: 455 KHz
- Sensitivity
- AM (10 dB S+N/N, 6 KHz BW) 0.15-0.25 MHz: 40 uV 0.25-0.5 MHz: 16 uV 0.5-1.8 MHz: 8 uV 1.8-30 MHz: 1 uV FM (12 dB SINAD, 8 KHz BW), optional 28-30 MHz: 0.5 uV SSB/CW (10 dB S+N/N, 2.4 KHz BW) 0.15-0.25 MHz: 5 uV 0.25-0.5 MHz: 2 uV 0.5-1.8 MHz: 1 uV 1.8-30 MHz: 0.25 uV
- Selectivity
- AM wide: 6 KHz (-6 dB) 14 KHz (-60 dB), with optional YF-112A AM narrow: 2.2 KHz (-6 dB) 5 KHz (-60 dB) FM (Optional): 8 KHz (-6 dB) 19 KHz (-50 dB), with optional FM-747 SSB/CW: 2.2 KHz (-6 dB) 5 KHz (-60 dB) CW narrow: 500 Hz (-6 dB) 1.8 KHz (-60 dB), with optional YF-112C
- Image rejection
- 70 dB (above 1.8 MHz)
- AF output power / speaker
- 1.5 W at 10% distortion / 4 ohm
- External speaker connector
- 3.5 mm, 4-8 ohm
TRANSMITTER SECTION
- AM
- 25 W
- FM
- 100 W
- SSB (PEP)
- 100 W
- CW
- 100 W
- Modulation system
- AM: Low-level, early stage FM: Variable reactance (With optional FM-747) SSB: Balanced, filtered carrier
- Max FM deviation (Factory set)
- ±2.5 KHz
- Spurious emissions
- Better than -40 dB
- Microphone impedance / connector
- 500-600 ohm / 8-pin (Metal locking ring connector)
- Microphone input level
- ? mV
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