Yaesu FT-840

Desktop Shortwave Transceiver

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Blending the high performance digital frequency synthesis techniques from the Yaesu FT-890 with the operating convenience and affordability of the FT-747GX, the FT-840 adds a choice of two optional remote automatic antenna tuners and a wealth of convenient functions. For compact base and mobile stations, the FT-840 set the new standard for high-performance affordable transceivers. As a first-time rig, back-up or main station transceiver, the FT-840 has the features and dependability that both beginners and seasoned operators will appreciate.

Low Noise Receiver
The receiver section of the FT-840 includes direct feed to the first mixer, for excellent rejection of intermodulation. The careful design yields a highly sensitive receiver that is renowned for its "quiet" performance.

Ease of Operation
Without the clutter and complexity of some other rigs, the FT-840's outstanding ergonomics mean you always find the button or control you need quickly. The reduced number of keys also means that there is a greater proportion of the front panel space dedicated to the display than on competing rigs.

IF Shift
To help reduce interference on SSB or CW, the IF Shift feature allows you to move the center frequency of the passband around, rolling off interference from either the high or low side. Once a feature only found on top of the line transceivers, it's here for you on the FT-840!

Direct Digital Synthesis (DDS)
The lightning-fast DDS system provides instant lock time for the synthesizer, along with ultra-fine tuning steps, for silky-smooth tuning similar to that found on older analog VFOs.

Computer Control Capability
The FT-840 supports Yaesu's CAT System for computer control. Use your favorite logging program to read your current operating frequency, or send frequency commands based on "spots" from your local packet cluster.

Frequency range

RX-range
0.1-30 MHz
TX-range
10-160 m + WARC
HAM bands
160m  80m  60m  40m  30m (WARC)  20m  17m (WARC)  15m  12m (WARC)  11m (CB)  10m 
Stability
± 10 p.p.m. (or ± 500 Hz FM)
Tuning steps
10 / 100 Hz (CW, SSB)
100 / 1000 Hz (AM, FM)
Filters
?

Receiver

Modulations
AM   FM   CW   USB   LSB  
Sensitivity
1.8-30 MHz (CW, SSB, AM): < 2.0 µV
20-30 MHz (FM, optional): < 0.32 µV
Selectivity
CW: 500 Hz @ -6 dB, 1.8 kHz @ -60 dB
SSB, CW, AM: 2.2 kHz @ -6 dB, 5.0 kHz @ -60 dB
W-AM: 6 kHz @ -6 dB, 14 kHz @ -60 dB
FM: 8 kHz @ -6 dB, 19 kHz @ -60 dB
Receiver system
Doulbe conversion superheterodyne
IF-frequencies
1st: 47.055 MHz
2nd: 8.215 MHz
3rd: 455 kHz (FM, optional)
Image rejection
60-70 dB
Audio output
1.5 W

Transmitter

Modulations
AM   FM   CW   USB   LSB  
RF-Output
SSB/CW: 1-100 W, AM: 1-25 W

Connections

Antenna
SO-239
Impedance
50Ω

Electrical

Power requirements
13.8V DC ±10%
Current drain RX
1.2 A
TX
20 A max

Physical

Dimensions (w×h×d)
238 × 93 × 243 mm (9.37 × 3.66 × 9.57 in)
Weight
4.50 kg (9.9 lbs)
Form factor
Base Station
Manufactured
Between 1993 and 199x in Japan
MPN
YAESU-FT-000840

Other features

Memories
None
Usage
Amateur / Ham radio operators
Features + options
?
Accessories
?

Manuals, diagrams and brochures

Yaesu FT-840-Brochure submitted by RigReference
Yaesu FT-840 Schematic Diagram submitted by RigReference
Yaesu FT-840 Technical Supplement submitted by RigReference
 
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Find the Yaesu FT-840 user manuals on eBay

Reviews & stories

Great Beginners Rig

Yaesu FT-840, Desktop Shortwave Transceiver

Hard to beat this rig. It is short on features but it does everything it was designed to do very well.

I loved mine!

Written by KA9MOT on Aug 11, 2012

Overall
 
Performance
Build quality
Features
User friendlyness
Value for money
Aquired
Good condition in 2004
USD 350.00

Can't go wrong with this rig

Yaesu FT-840, Desktop Shortwave Transceiver

I've had mine since Dec 2011. I use it daily. Simple but affective. Solidly built for both mobile and base station use. The receive audio is excellent. Good reports on my transmit audio using a MC-50 microphone. I have an external DSP (Timewave DSP-9+) for use during contests. Very good rig for about $400.00 used.

Written by NH6RF on Jul 12, 2013

Overall
 
Performance
Build quality
Features
User friendlyness
Value for money
Aquired
Good condition in 2011
USD 280.00

Dependable and great audio

Yaesu FT-840, Desktop Shortwave Transceiver

I have owned my 840 since its last year of production and it has never needed a repair as of March of 2017! I primarily use it for cw and have the 500 hz filter installed and the filter for AM phone.The only feature I wish it had was vox but being a cw op primarily no big deal. I don't miss a keyer as I only use bugs and straight keys. I consider the receiver section to be quite good and I also use it for swling.A nice dependable little rig. I constantly get positive comments on the xmit audio on both am and ssb with the MD 100 mike.

Written by wa1ufo on Mar 6, 2017

Overall
 
Performance
Build quality
Features
User friendlyness
Value for money
Aquired
Mint condition in 2017
USD 700.00

New and second-hand prices

Estimating the value of a rig can be challenging. We collect prices paid by real hams over the years to help you estimate the value of a used Yaesu FT-840. Just bought or sold this model? Let us know what you traded it for and help other ham operators!

Based on historic data, today's second-hand price of the Yaesu FT-840 is around:

  • EUR 238.00
  • USD 169.00 ~ USD 324.00
  • GBP 148.00
Year Historic price Condition Submitted by
2016 USD 330.00 Used / Good RHB
2015 EUR 250.00 Used / Poor Ruediger
2011 USD 280.00 Used / Good NH6RF
2010 USD 400.00 Used / Good KC2UGV
2010 USD 400.00 Used / Good eBay
2008 GBP 470.00 Used / Mint HT Performance
2004 USD 350.00 Used / Good KA9MOT

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