Yaesu FT-817 Modification Instructions

Wideband hf settings

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FT-817

Modification instructions for wideband HF settings.

Read the bottom of the last page for full TX!

These instructions are to enable you to expand the HF coverage of your transceiver to 500kHz per band.

Also the modification will extend VHF and UHF coverage and modify some settings as per the table on the next page.

Don't forget it is YOUR responsibility to ensure that you do not transmit out of your permitted bands.

This modification will also clear any memories and individual changes to settings so make a note of these

before you carry out this procedure.

Please note that you are taking full responsibility for any damage caused to the transceiver during this

modification exercise. All normal precautions to protect against static electricity should be followed.

Firstly remove the battery and disconnect the radio from any power source.

Next remove the top and bottom covers

Looking at the front of the radio there are 2 clips on the top and 2 on the bottom.

Ease these clips free of the main body of the radio and slide the front panel off

(taking care not to overstretch the attached ribbon cable)

Next unclip the ribbon cable from the main body of the radio.

Now the front panel should come free and you can then see the jumper positions.

To extend the HF range JP4006, JP4007, JP4008 should be shorted and

JP4004, JP4005, JP4009 should be open circuit

JP4008

Leave all other jumpers as they are.

JP4007

Reassemble in reverse order to the disassembly procedure.

JP4006

When fully reassembled apply power and whilst

pressing F and V/M turn on the power switch.

Table of Contents

Do you have a question about the FT-817 and is the answer not in the manual?

Page 1 JP4004, JP4005, JP4009 should be open circuit JP4008 Leave all other jumpers as they are. JP4007 Reassemble in reverse order to the disassembly procedure. JP4006 When fully reassembled apply power and whilst pressing F and V/M turn on the power switch. © Yaesu UK Ltd 2004...
Page 2 JP4004, JP4005, JP4006 and soldering JP4007, JP4008, JP4009 enables you to expand the HF, VHF and UHF TX coverage of your FT-817 transceiver to the following: 1.8 MHz – 33 MHz 33 MHz – 56 MHz 140 MHz – 154 MHz 420 MHz –...