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DIY kits a 70W SSB linear Power Amplifier for YAESU FT-817 KX3 running HF 80m-10m bands

Adding a Panadapter to the Yaesu FT-817

Amateur Radio Memory Manager Software for the Mac support many Yaesu Icom AOR and Kenwood radios

The simple and safe RS232 CAT interface for Yaesu FT-1000MP, FT-1000MP Mark V and FT-1000MP Mark V Field rigs

Free memory backup/restore program for the Yaesu VR-5000 receiver.

Homebrewing a mic boom headset for the Yaesu FT 897 and 857 transceivers

A 50-ohm 10W resistor forms the core of this portable QRP antenna, designed by _K0EMT_ for convenient operation on 160m and 80m. The construction involves soldering the resistor to a BNC connector, with one lead to ground and the other to the center conductor, then insulating the assembly. This minimalist design aims to provide a highly portable solution for low-band QRP operations, acknowledging the inherent trade-offs between antenna size and efficiency. Testing with an antenna analyzer revealed low SWR on both 160m and 80m, with a Yaesu FT-817 confirming good matching. While 40m and 30m showed higher SWR, the primary focus remains on the lower bands. The author successfully tested the antenna with **2.5W CW** output, demonstrating its practical application for QRP field operations where ease of deployment is paramount, even if it means sacrificing some **gain** compared to full-sized antennas.

Picture and specifications of the Yaesu FT-847

Receiver converter that can be plugged to the backside of the Yaesu FT-817 battery powered portable transceiver

This computer control program is specifically designed for the Yaesu FT-920 transceiver. Freeware windows application.

A page dedicated to 2nd generation of the FTdx9000 series transceiver Yaesu FT2000

Interesting post with a practical video of using solar panel with a yaesu ft-857.

Yaesu FT-950 with a large picture at RigPix

Canadiam ham radio dealer for Alinco, Alpha Delta,Bencher, Ameritron,Anli,Butternut,Comet,Daiwa,Cusfcraft,Icom,Kantronics,Laha,Vectronics,MFJ,Yaesu products

FT-1000MP series radios solid-state replacement for the CFL backlight. Eliminates the delay and brightness issues. Works on MKV, MKV Field, and 1000MP radios.

Service manual in PDF Format for the Yaesu FT-7800 transceiver

Audio setting and improvements for Yaesu FT-2000 by k6jrf

For macOS users engaged in amateur radio operations, a robust logging solution is essential for tracking QSOs, managing contest entries, and handling QSLs. RUMLog addresses these needs by providing a fully featured logbook program designed specifically for the Apple ecosystem. It integrates capabilities such as transceiver control for popular Icom, Elecraft, Yaesu, and Kenwood rigs, CW keyer interfacing, and real-time DX cluster monitoring. The software also includes mapping functions, callsign checking, and extensive import/export options for various log data formats. RUMLog's design supports both general logging and specialized contest operations, offering tools for efficient entry and submission. Its QSL handling and printing utilities streamline the confirmation process, a critical aspect for award pursuits like _DXCC_. The program's ability to interface with a wide array of transceivers via _Hamlib_ or proprietary protocols ensures broad compatibility, allowing operators to leverage its features across different station configurations. The free availability of RUMLog makes it an accessible option for macOS-based hams seeking a powerful logging utility.

Yaesu FT-450, FT-950, FT-2000, FT-5000, FT-9000 backup and restore Program for win32, requires login to Yahoo Groups

FT-847 Specifications

VA7ST page about the Yaesu FT-2000

Controlling amateur radio transceivers remotely often requires dedicated software to interface with the radio's CAT (Computer Aided Transceiver) system. CATSPAW is a software utility specifically developed by N2OHZ for the Yaesu FT-100, facilitating computer-based control over various radio functions. The software provides an interface for adjusting parameters such as frequency, mode, and other operational settings, which can be particularly useful for remote station operation or automated tasks. While the specific features and user interface details are not extensively documented on the download page, the primary function centers on providing a digital control layer for the _FT-100_. This allows operators to integrate the transceiver into a larger station setup that might include logging programs or digital mode applications, enhancing the overall operational flexibility. The utility's design focuses on direct control, leveraging the radio's internal command set. As a downloadable executable, _CATSPAW_ represents a common approach to radio control software from its era, offering a direct link between a personal computer and a specific transceiver model.

Mailing list post about Yaesu ft-100 knobs

Schematic of Yaesu FT-857 main board original jumpers based on different radio type

Python implementation of CAT system for Yaesu FT-817ND

Yaesu FT-1000MP Mark V Field review by W4TI

eham FT-1000MP MR V Field product review

Connecting the iPad or the iPhone to a Yaesu FT-817 using an home made cable, using common digital modes like PSK31 RTTY and SSTV. Article by Andrew VK3BQ

Another radio control softwrare for the Yaesu FT 100 by Federico Batarse, XE2NLM

Yaesu FT857D No TX Audio, video on reparing and yaesu Mic modification, with audio improvements for SSB and FM

Yaesu FT-2000 roofing filters

SP7PKI video review of the Yaesu FT-450

This FAQ is made from the archives of the FT100 mailing list based on the OneList service.

QRG_DB is a database for the Palm OS computer to control a Yaesu FT-817 Transceiver via the CAT interface

This Arduino library allow you to control various functions of Yaesu FT-857 through the use of CAT functions. This may work even with FT-817 and FT-897.

This modification will expand the tx frequency range of the Yaesu FT-991 from allowing just ham radio bands, to all bands 1.8 - 30MHz and 50-54 MHz.This information is solely for use by licensed members of MARS (Military Affiliate Radio System) or CAP (Civil Air Patrol)

Microphone wiring for Yaesu FT-757 GX II

QST Magazine Product Reviews - Key Measurements Summary - HF-Transceivers or Receivers. Compares Yaesu FTDX5000, Elecraft K3, Flex 5000 and Kenwood TS-590S

Yaesu FT-2000 Panadapter, using the Softrock 9 Lite, SDR receiver kit

Operating on the 2200m band (135.7-137.8 kHz) often presents challenges for amateur radio transceivers, which typically exhibit poor receiver performance at these very low frequencies. This project addresses the issue by providing a design for a dedicated 137 kHz antenna preamplifier, specifically tailored to improve signal reception for radios such as the _Yaesu FT-817_. The preamplifier circuit utilizes a low-noise FET input stage, crucial for minimizing self-generated noise and maximizing the signal-to-noise ratio from weak LF signals. The design includes a detailed schematic, component values, and construction notes, enabling homebrewers to build a functional unit. The goal is to achieve significant gain, making the faint signals on 2200m more discernible and improving overall band usability. Key design considerations include impedance matching to typical antenna systems and ensuring stable operation across the narrow LF segment. The circuit aims for a **low noise figure** and sufficient amplification to overcome the inherent limitations of general-purpose HF transceivers when operating below **200 kHz**.

Eham users review of the Yaesu FT-950

Demonstrates how to construct an automatic band decoder, moving beyond manual selector switches for antenna and filter control. It addresses the challenge of varying band data outputs from different transceivers: Icom rigs provide voltage values, Yaesu rigs use Binary Coded Decimal (BCD), and Kenwood rigs lack direct band data output. The resource highlights a clever solution utilizing logging software like _CT (K1EA)_ and _DX4WIN_ to emulate Yaesu's BCD output via a PC's printer port, making the decoder compatible with any rig. The author details experiences building decoders based on designs by Bob _K6XX_ and Guy _ON4AOI_, noting K6XX's simple TTL chip design and ON4AOI's more comprehensive, opto-isolated unit capable of controlling ten outputs and bandpass filters like the _Dunestar_. It also references a _W9XT_ board design, which Steve Wilson, G3VMW, modified with BD140 transistors for source drivers, emphasizing safety. The author successfully cased an ON4AOI-based decoder in an old modem case, connecting it to an FT1000MP or a PC printer port to drive remote relays and a Dunestar Band Pass Filter.

A video demonstrating SMD board inside FT-897D to makes the two fans run only when temperature threshold is reached

open source software designed for the Yaesu VR-120 receiver.

FT100: the yaesu ft-100 yahoo group

Best audio settings, modifications and tricks for the Yaesu FT-2000 by DK3HV

QST review for Yaesu FT-920

ARRL video review of the Yaesu FTDX-5000

This voice-keyer-interface connects between a Yaesu FT1000MP and a PC's sound card & COM port. It can be used as a voice-keyer with Contest Voice Blaster and as a voice-keyer and CW-keyer with Writelog.

A schematic for a DX circuit protection for the Yaesu FT-817, provides protection from the external power supply overvoltage by DL2LTO in german