ICOM IC-7610 Sherwood Report -

Sherwood Engineering HF Test Results

Model Icom IC-7610 Serial # 12001056 Test Date: 12/22/2017

IF BW 2400 –6 / -60, Hz: 2525 / 3430 Ultimate > 110 dB
IF BW 500 –6 /-60, Hz: 517 / 658 Ultimate > 110 dB

Front End Selectivity (A – F) Half-Octave Band Pass + first order Trk Presel A

First IF rejection +/- kHz Does not apply dB

Dynamic Range measurements made on 20 meters. DigiSel OFF unless listed.

Dynamic Range of radio, Preamp OFF, IP+ OFF
Dynamic Range 100 kHz, DigiSel ON 95 dB
Dynamic Range 20 kHz 90 dB
Dynamic Range 10 kHz 90 dB
Dynamic Range 5 kHz 90 dB
Dynamic Range 2 kHz 90 dB

Dynamic Range of radio, Preamp OFF, IP+ ON
Dynamic Range 100 kHz, DigiSel ON 105 dB
Dynamic Range 20 kHz 98 dB
Dynamic Range 10 kHz 98 dB
Dynamic Range 5 kHz 98 dB
Dynamic Range 2 kHz 98 dB

Blocking above noise floor, 1uV signal @ 100 kHz, AGC ON,
Blocking refers to OVF indicator ON
DigiSel OFF IP+ OFF 122 dB
DigiSel OFF IP+ ON 119 dB
DigiSel ON IP+ OFF 124 dB
DigiSel ON IP+ ON 121 dB

Phase noise (normalized) at 2.5 kHz spacing: -139 dBc/Hz
Phase noise (normalized) at 5 kHz spacing: -142 dBc/Hz
Phase noise (normalized) at 10 kHz spacing: -146 dBc/Hz
Phase noise (normalized) at 15 kHz spacing: -148 dBc/Hz
Phase noise (normalized) at 20 kHz spacing: OVF > -149 dBc/Hz

RMDR at 2.5 kHz spacing: 112 dB
RMDR at 5 kHz spacing: 115 dB
RMDR at 10 kHz spacing: 119 dB
RMDR at 15 kHz spacing: 121 dB
RMDR at 20 kHz spacing: OVF > 122 dB

Measurements with IP+ OFF and IP+ ON OFF ON

Noise floor, SSB bandwidth 14 MHz, Preamp OFF -125 -122.5 dBm
Noise floor, SSB bandwidth 14 MHz, Preamp 1 ON -134 -131.5 dBm
Noise floor, SSB bandwidth 14 MHz, Preamp 2 ON -135 -134.5 dBm

Sensitivity SSB at 14 MHz, Preamp OFF 1.13 1.65 uV
Sensitivity SSB at 14 MHz, Preamp 1 ON 0.45 0.56 uV
Sensitivity SSB at 14 MHz, Preamp 2 ON 0.37 0.39 uV

Noise floor, 500 Hz, 14.2 MHz, Preamp OFF -132 -129 dBm
Noise floor, 500 Hz, 14.2 MHz, Preamp 1 ON -140 -138 dBm
Noise floor, 500 Hz, 14.2 MHz, Preamp 2 ON -142 -141 dBm

Noise floor, SSB, 50.125 MHz, Preamp OFF -124 dBm
Noise floor, SSB, 50.125 MHz, Preamp 1 -133.5 dBm
Noise floor, SSB, 50.125 MHz, Preamp 2 -135.5 dBm

Sensitivity, SSB, 50.125 MHz, Preamp OFF 1.33 uV
Sensitivity, SSB, 50.125 MHz, Preamp 1 0.46 uV
Sensitivity, SSB, 50.125 MHz, Preamp 2 0.37 uV

Noise floor, 500 Hz, 50.125 MHz, Preamp OFF -130 dBm
Noise floor, 500 Hz, 50.125 MHz, Preamp 1 On -139 dBm
Noise floor, 500 Hz, 50.125 MHz, Preamp 2 On -140.5 dBm

Signal for S9, no preamp -73 dBm 50 uV
Signal for S9, Preamp 1 -80 dBm 23 uV
Signal for S9, Preamp 2 -80 dBm 23 uV

Gain of preamp(s)
Preamp 1 12 dB
Preamp 2 16 dB
Gains are estimates. Receiver gain is adjusted along with preamp settings.
See additional information under NOTES.

AGC threshold at 3 dB, Preamp OFF 2.7 uV
AGC threshold at 3 dB, Preamp 1 ON 1.20 uV
AGC threshold at 3 dB, Preamp 2 ON 1.16 uV