Also try 111010.?
It seems there are different configurations , and possibly conflicting evidence.?
I doubt if Yaesu would make a custom IC, just for JA market

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nope, still get “error”

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(after setting jumpers:

press FAST and LOCK, and power up,

menu 39 ALL INIT, press MCK/W,

Try TX on 144 MHz ?—> ?works

Try TX on 147 MHz —> “error"

On Feb 25, 2022, at 2:47 PM, Andy Bosworth <sidthepop@...> wrote:

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On the jumpers try 101011 by jumper number, do? reset after.?
Should give HF coverage, 144-148 and 430 -450

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On Fri, 25 Feb 2022 at 19:32, Carl KO4SSA via <cbeaudette99=[email protected]> wrote:

Hi FT-847 fans!!

This is Carl, KO4SSA.
I just purchased a used 847 on eBay, from Japan.? I’m wondering how to modify for US bands.? As delivered only TX 144-146 and 430-440.
I’ve searched high and low on the the web, including Colin, G1IVG’s page, and emailed him!!? Haven’t heard back.?

I’ve tried several solder joint configurations and will not TX on 146.52 or 445000. About to give up.? Is the Japan stuff transmit range burned into EPROM or something????

Colin lists several HF coverage configurations and I am able to transmit on 14.550!!? (into dummy load of course)? I point out as evidence that changing the solder jumpers did do SOMETHING.? Also, initially the cross-band repeater item was not available on the menu and now it appeared.? More evidence that changing the jumpers did something.

Thanks Carl

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