FT-757GX-II / SX-II

Yaesu
FT-757GX-II / SX-II

Specifications

Prices

Popular HF transceiver covering 160 to 10 meters amateur bands. Up to 100 Watts power output (10 Watts for the FT-757SX-ii model) with AF speech processor and split-frequency operation. 150 KHz to 30 MHz receiver, effective IF notch filter, IF shift for minimizing near interference, continuously adjustable NB, scan mode. Power, SWR and ALC analog meter. Ideated in Japan, year of introduction 1987.

Reference market : amateur-radio

FT-757GX-II / SX-II specifications

General

Frequency coverage
Receive	0.1500 ~ 29.9999 MHz
Transmit	1.5000 ~ 1.9999 MHz 3.5000 ~ 3.9999 MHz 7.0000 ~ 7.4999 MHz 10.0000 ~ 10.4999 MHz 14.0000 ~ 14.4999 MHz 18.0000 ~ 18.4999 MHz 21.0000 ~ 21.4999 MHz 24.5000 ~ 24.9999 MHz 28.0000 ~ 29.9999 MHz
Mode
CW / FSK / LSB / USB / AM / FM
Tuning step
10 Hz / 1 KHz (CW / SSB) 1 / 10 KHz (AM) 2.5 / 10 KHz (FM) 500 KHz (up/down band step)

Receiver

Sensitivity
CW / SSB	1.0 uV (0.15~0.25 MHz, 10dB S+N/N) 0.5 uV (0.25~0.5 MHz, 10dB S+N/N) 0.25 uV (0.5~30 MHz, 10dB S+N/N)
AM	10 uV (0.15~0.25 MHz, 10dB S+N/N) 4 uV (0.25~0.5 MHz, 10dB S+N/N) 1 uV (0.5~30 MHz, 10dB S+N/N)
FM	0.5 uV (0.5~30 MHz, 12dB SINAD)
Selectivity
CW-N	0.6 KHz (-6dB) 1.3 KHz (-60dB)
CW-W / FSK / SSB	2.7 KHz (-6dB) 4.5 KHz (-60dB)
AM	6 KHz (-6dB) 18 KHz (-60dB)
FM	15 KHz (-6dB) 30 KHz (-60dB)
RF preamplifier
Yes
RF attenuator
20dB
DR (Dynamic Range)
> 100dB (14 MHz, CW-N)
Image rejection
> 70dB
IF rejection
> 70dB
IF-shift
Yes
Notch filter
Manual	40dB
NB (Noise Blanker)
Yes, width adjustable
RIT (Receiver Incremental Tuning)
Yes [1]
AGC (Automatic Gain Control)
Fast, slow
Frequency stability
± 10ppm with temperature from 0°C to +40°C after 15' warm-up
IF (Intermediate Frequency)
1°	47.060 MHz
2°	8.215 MHz
3°	455 KHz
CW features
Semi / full break-in Peak audio filter [2]

Transmitter

Output power
CW / SSB / FM	100 W max PEP/DC (FT-757GX-2) [3] 10 W max PEP/DC (FT-757SX-2)
AM	25 W max (FT-757GX-2) 2.5 W max (FT-757SX-2)
Spurious emission
< -50dBc
Carrier suppression (SSB)
> 40dB
Unwanted sideband suppression (SSB)
> 50dB (1kHz test tone)
Intermodulation products (SSB)
< -35dB (14 MHz, 100 W PEP)
Maximum deviation (FM)
± 5 kHz
Audio response
350~2900 Hz (-6dB)
Microphone
500~600Ω
CW features
Keyer, speed adjustable

Features

Memory
10 regular memories. 1 special clarifier memory. 2 VFO.
Display
100 Hz frequency resolution
Antenna
SO239 50Ω
Power supply
13.5 VDC (±10%)
Power consumption
2A RX 19A TX (100 Watts)
Audio power
1.5 W on 4Ω
Audio output
Jack 6.35 mm (headphone)
Connections
Jack 3.5 mm (external speaker) Jack 6.35 mm (CW keyer) RCA (AF output, 200mV peak @ 50kΩ) RCA (RF output, 100mV @ 50Ω) RCA (Patch / AFSK input) RCA (+8V / 100mA max / center positive) RCA (+13.5V / 500mA max / center positive) RCA (ALC) RCA (PTT) 6-pin mini-DIN (CAT) 8-pin Molex (band data) 8-pin jack (microphone)

Mechanical and environmental data

Dimensions
238 (W) x 93 (H) x 238 (D) mm without knobs
Weight
5.25 kg

The clarifier function use the Tuning knob and DWN / UP keys to change the receiving frequency through the full range of 0.15-30 MHz.
The CW-W mode activates an internal AF filter, while the IF filter is the same as for SSB.
Slightly less on 10-meters band.

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FT-757 series :

The FT-757 transceiver, first introduced in 1983, was upgraded with the FT-757 Mark II version. New features include selectable mode-dependent tuning steps, an improved CAT system for more advanced control by computer, a IF notch filter, while the original 500 KHz to 30 MHz general coverage receiver start now from 150 KHz.

FT-757GX-II / SX-II front end protection :

The receiver front end includes a vacuum arc surge suppressor and a lamp fuse to protect the sensitive receiver circuitry from high voltage pulses (EMF) at the antenna terminal. Several thousands of volts can develop naturally when dry Wind or electrical storms create an electrostatic charge on the antenna elements, and this is delivered to the antenna jack if the antenna is connected to the transceiver. In such a case, the lamp fuse may burn out (even if the transceiver is turned off at the time). The only way to avoid this condition is to disconnect the antenna from the transceiver whenever the weather is likely to create high voltage on the antenna.

If the receiver is found to have suddenly lost sensitivity, inspect the filament of the lamp fuse (F1001 on the RF Unit). If it is open substitute with a 8V 100mA pilot lamp. Do not jumper across the lamp fuse terminals however, as this will defeat the protection and could result in serious damage.

FT-757GX-II / SX-II price

We have collected for your convenience the Yaesu FT757-2 sale price (Euro) and its trend over time. Useful to guarantee a cheaper purchase of this radio and to put it for sale in the second-hand market. Of course offers, accessories, warranty terms and conditions can lead to different figures.

Price	Date	Condition
EUR 349.00	2021-jun	Second Hand Good condition and working. Comes with original microphone and power lead
EUR 333.50 (299GBP)	2020-aug	Second Hand Good used condition
EUR 441.00 (500USD)	2019-dec	Second Hand With desktop microphone (Yaesu MD-1B8) and heavy duty power supply (Yaesu FP-757HD)
EUR 270.00 (400AUD)	2016-feb	Second Hand In excellent condition. Comes with original manual, power cable and hand microphone

FT-757GX-II / SX-II review

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