Yaesu FTDX10 Test

yaesu ftdx 10 test Sherwood Engineering HF Test Results

Yaesu FTDX10 Test

This is a full (lab) test review (only)

Due to Corona, Rob is currently bunkered down in his Denver Co. QTH His Lab is at this Denver QTH

Normally, Rob’s On-The-Air (contest) tests are performed at his Ault Co. QTH (near Boulder Co). He is not currently able to go there.

Rob had to return the “borrowed” FTdx-10 without running his normal (contest) tests.

‚ÄčAll comments in this document are based on limited time operating from his Denver Co. QTH, and subject to change after he has had more time operating the radio from his Ault Co. QTH.

Yaesu FTDX10 Test

IF BW 2400 -6 / -60, Hz / Ultimate>100 dB
IF BW 500 -6 /-60, Hz / Ultimate>105 dB
Front End SelectivityHalf Octave
First IF rejection 9005 kHz91 dB
Dynamic Range of radio, no preamp
Dynamic Range 20 kHz107 dB
Dynamic Range 10 kHz107 dB
Dynamic Range 5 kHz107 dB
Dynamic Range 2 kHz107 dB
Dynamic Range with radio, Preamp 1
Dynamic Range 20 kHz106 dB
Dynamic Range 10 kHz106 dB
Dynamic Range 5 kHz106 dB
Dynamic Range 2 kHz104 dB
Blocking above noise floor, 1uV signal @ 100 kHz, AGC On,141* dB
* Limited by phase noise
Phase noise (normalized) at 2.5 kHz spacing:-145 dBc/Hz
Phase noise (normalized) at 5 kHz spacing:-150 dBc/Hz
Phase noise (normalized) at 10 kHz spacing:-152 dBc/Hz
Phase noise (normalized) at 20 kHz spacing:-153 dBc/Hz
Phase noise (normalized) at 30 kHz spacing:-153 dBc/Hz
Phase noise (normalized) at 40 kHz spacing:-153 dBc/Hz
Phase noise (normalized) at 50 kHz spacing:-153 dBc/Hz
Phase noise (normalized) at 100 kHz spacing:-153 dBc/Hz
Phase noise (normalized) at 200 kHz spacing:-153 dBc/Hz
Phase noise (normalized) at 300 kHz spacing:-154 dBc/Hz
Phase noise (normalized) at 400 kHz spacing:-155 dBc/Hz
Phase noise (normalized) at 500 kHz spacing:-155 dBc/Hz
RMDR at 2.5 kHz spacing:118 dB
RMDR at 5 kHz spacing:123 dB
RMDR at 10 kHz spacing:125 dB
RMDR at 20 kHz spacing:126 dB
RMDR at 50 kHz spacing:126 dB
RMDR at 100 kHz spacing:126 dB
RMDR at 200 kHz spacing:126 dB
RMDR at 500 kHz spacing:128 dB
Noise floor, SSB bandwidth 14 MHz, no preamp-121 dBm
Noise floor, SSB bandwidth 14 MHz, Preamp 1 On-130 dBm
Noise floor, SSB bandwidth 14 MHz, Preamp 2 On-133 dBm
Sensitivity SSB at 14 MHz, no preamp0.63 uV
Sensitivity SSB at 14 MHz, Preamp 1 On0.21 uV
Sensitivity SSB at 14 MHz, Preamp 2 On0.15 uV
Noise floor, 500 Hz, 14.2 MHz, no preamp-126 dBm
Noise floor, 500 Hz, 14.2 MHz, Preamp 1 On-135 dBm
Noise floor, 500 Hz, 14.2 MHz, Preamp 2 On-138 dBm
Noise floor, SSB, 50.125 MHz, no preamp-123 dBm
Noise floor, SSB, 50.125 MHz, Preamp 1-133 dBm
Noise floor, SSB, 50.125 MHz, Preamp 2-135 dBm
Sensitivity, SSB, 50.125 MHz, no preamp0.42 uV
Sensitivity, SSB, 50.125 MHz, Preamp 10.15 uV
Sensitivity, SSB, 50.125 MHz, Preamp 20.14 uV
Noise floor, 500 Hz, 50.125 MHz, no preamp-130 dBm
Noise floor, 500 Hz, 50.125 MHz, Preamp 1 On-139.5 dBm
Noise floor, 500 Hz, 50.125 MHz, Preamp 2 On-140 dBm
Signal for S9, no preamp-67 dBm 100 uV
Signal for S9, Preamp 1-76 dBm 35 uV
Signal for S9, Preamp 2-85 dBm 12 uV
Gain of preamp(s)
Preamp 19 dB
Preamp 218 dB
AGC threshold at 3 dB, no preamp4.2 uV
AGC threshold at 3 dB, Preamp 1 On1.46 uV
AGC threshold at 3 dB, Preamp 2 On0.54 uV

Note: SSB noise floor and sensitivity were inadvertently measured at 3000 Hz instead of 2400 Hz, as 3000 Hz is the default bandwidth for the FTdx10. All other measurements in the CW mode were made at the standard 500-Hz bandwidth.

yaesu ftdx 10 test Test Notes:

In order to see signals at the receiver noise floor with IPO selected (no preamp), scope gain has to be set at +30 dB. In noisy Denver on 20m, I set the scope gain around +15 dB, dependent on the span.

At +15, a -110 dBm signal reads about 1 division on the scope scale of 5 dB/division. These values are with IPO selected, which is no preamp.

Scope dynamic range is only 50 dB, unlike Icom at 10 dB per division.

This may be an advantage for many users as signals peak higher on the scale.

IC-7610 has a 100 dB scope dynamic range, while the IC-7300 is 80 dB.

The band scope / waterfall is more like an Icom than the FTdx-101D, which I consider an
improvement.

There is no extra gain inside the roofing filter which I found annoying.

I consider the band scope jumpy, needing averaging. When the scope gain is set for waterfall band noise to be barely blue, the band scope noise spikes are 1 to 2 divisions.

The current draw is more like an IC-7610 than an IC-7300, causing the cooling fan to cycle ON/OFF when in receiver mode only, as does the 7610.

Enabling preamp 1 does not increase noise output at the speaker, which is nice.

Receive audio on CW and SSB is excellent using an external front-facing speaker. As with any top cover mounted speaker, the high frequencies are attenuated.

Ergonomics is overall good, though I wish the AF/RF gain controls were interchanged with the notch/APF controls. Being right handed, I tend to bump the tuning when adjusting the volume.

While there is a selection of AGC decay speeds, they do not appear to be adjustable.

The rear larger tuning knob makes slewing the band very easy.

As with many noise blankers, it distorts the signal if turned up very high.

Noise reduction beyond a modest level has weird audio artifacts.

No dedicated power output knob, as with the 101D.

On the assumption that the price will eventually settle below $1500, the FTdx10 will be a
very popular mid-price rig.

yaesu ftdx 10 test Rev C

Yaesu FTDX10 Test

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