YAESU FT-757GX All Mode Transceiver User Manual

YAESU FT-757GX All Mode Transceiver

Blending the finest features of the latest HF transceivers into a volume smaller than any predecessor, and actually simplifying circuitry and construction at the same time, the FT-757GX includes three microprocessors to give you all this and more…

OPTIONS

• MH-1 ss Hand-held Microphone
• M D-1 ss Desk-top Microphone
• FC-757AT Automatic Antenna Tuner FAS-1-4R Remote Antenna Selector (use w/FC-757AT)
• FP-757GX Switching Power Supply
• FP-757HD Heavy-duty Power Supply
• FP-700 Standard Power Supply
• FTV-700 monoband V /UHF Transverter (w/o Band Module)
• FTV-6M 6m Module for FTV-700
• FTV-2M 2m Module for FTV-700
• FTV-70cm430MHz Module for FTV-700 Fl F-65 Interface Unit for Apple 11
• FIF-232C Interface Unit for IEEE RS· 232C bus

Dual VFOs and Eight memories

The dual A-B VFO scheme is augmented by complete, single button VFO/memory swap and bi-directional transfer functions, allowing simpler split-frequency operation than ever before. Memories store the entire frequency, for transceiver or general cover­age reception, so bandswitching becomes unnecessary. All VFO and memory data is backed up by a lithium battery so there is no need to keep power connected.

Programmable Memory Scanning

The FT-757GX can scan between any two adjacent memories programmed by the operator, through the entire frequency range or any selected portion. Automatic scan stop threshold can be set by the RF Gain and Squelch controls.

All Accessories Installed

Every item normally sold as an extra is installed at the factory and provided as standard, including AM and FM modes, a 600Hz narrow CW filter, iambic keyed with dot-dash memory, 25kHz marker gene­rator, IF shift and width filters, effective noise blanker and AF speech processor … all at no extra charge.

CAT System

Yaesu’s Computer Aided Transceiver (CAT) System provides for external control of VFO frequency and memory functions from the operator’s personal computer when linked with the CAT Interface Unit. (4800 Baud TTL level)

High-Performance General Coverage Receiver

With Yaesu’s unsurpassed IF shift/width system, switchable AGC and 20dB attenua­tor, as well as switchable RF preamp, the FT-757GX can provide a dynamic range in excess of 100dB in CW narrow. The noise blanker is designed for excellent blanking of the “woodpecker”, with noise blanker AGC adjustable on the front panel.

True All Mode Transceiver

Along with sideband selectable SSB and OSK CW, AM and FM are included as standard features, for both receive and transmit. No optional boards or filters to buy. Squelch operates on all modes.

Full Duty Cycle

The remarkable new heatsink design in­cludes a whisper. quiet cooling fan, with a new duct flow cooling system that incorpo­rates the heatsink right into the body of the transceiver. This allows forced-air cir­culation through the chassis and increases the cooling surface area substantially, per­mitting 100W PEP/DC output at 100% transmitter duty cycle in all modes .

CAD/CAM Design and Construction

FT-757GX printed circuit boards are laid out by computer, and then assembled by the computer-controlled automatic inser­tion system, vastly improving reliability and quality control, while offering features never before possible at such a low price. Compare the cost-versus-features and per­formance with any other radio or brand.

Full Break-in CW

Special features for CW operation include top cover switch-selectable semi break-in or OSK, and a built-in iambic keyer with dot­dash memory in a newly- designed Yasi LSI IC, also adjustable on top of the trans­ceiver … not an option. During split fre­quency OSK operation the FT-757GX checks the transmit frequency momentari­ly when switching to receive.

Novel Control Layout

Only the controls needed during actual operation are on the front panel, keeping it uncluttered and extremely convenient to operate. Presettable controls and con­nectors are all on the rear panel, including VOX gain, anti- trip and delay, AM carrier and SSB processor levels, marker switch, remote controller I /0 port, external speaker and Hi-Z AF outputs, patch input and external ALC, and band data for the FC-757AT Automatic Antenna Tuner.

Easiest Operation of All

The three microprocessors in the FT-757GX handle most of the routine switch­ing and adjusting functions usually done by hand or by discrete circuits in earlier generation equipment. The actual simplicity of the discrete circuitry in the FT-757GX guarantees a new level of reliability, while unparalled operating flexibility can be ex­tended virtually without limit through your external computer.

Choice of Power Supplies

Because of the full duty cycle capabilities of the FT-757GX, Yaesu is making a number of different power supplies avail­able to match different operating require­ments. The FP-757GX is a compact switch­ing supply capable of high duty cycle operation (for short periods). The FP- 757HD is a series regulator type supply also capable of high power demand, but is about the same size as the transceiver and includes an internal cooling fan and loud­speaker. The FP-700 is a series regulator supply capable of intermittent duty, such as full power SSB and CW or reduced power RTTY, FM and AM, and also in­cludes a loudspeaker.

Matching Automati Antenna Tuner

Surpassing any previous designs, the FC- 757 AT Automatic Antenna Tuner in­cludes its own microprocessor and lithium-backed memory to allow pushbutton storage in RAM of optimum tuner settings on a particular antenna and band, so that once a frequency is tuned (automatically) the tuner settings are stored for almost instant resetting at a later time, with no need to transmit. The fast, reliable automa­tic tuning system covers a broad range of SWRs, with a manual override capability for particularly difficult matching situa­tions. The FC-757AT also includes a built-in 50-ohm dummy load and automatic SWR calculating system and meter, as well as a dual range RF watt meter. The F AS-1- 4R Remote Antenna Selector can be used with the FC-757 AT to select up to four an­tennas right at the ,top of a tower, with only one feed line and a control line to the station. Once programmed, the right antenna is selected automatically when you change bands at the transceiver.

SPECIFICATIONS

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