There does not appear to be any solid conclusion yet as to getting around it, other than JP3001 and JP3002 are shown to be bridged and (as my radio has) some have what appear to be 0 ohm resistors in those places (30013002 respectively).JP3003 bridged hard reset gets HF expanded.I tried to open up VHFUHF by bridging JP3004-3008 as well, incrementally, one at a time.
In searching the Internet it appears that some European version radios do not have the 146-147.999mHz segment. JP3003 is to be bridged for expanded HF (1.8-29.999.99mHz) coverage. Yaesu FT-991A the next generation in all mode, all band MFHFVHFUHF transceiver with C4FM (System Fusion) Digital capability.Īll,I have been experimenting with this here and am not getting anywhere.
I had a FT-991 a few years ago, back then I watched a YouTube video that shows you the mod for HF Tx only so did the MARS mod shown (bridged JP3003). Surely after all this time and the vastness of the World Wide Web I can learn something new and someone has cracked the VHFUHF Tx side of this radio but no joy: Heres what I got so far: I found some photos in descriptions of how to mod this radio and I noticed how some pictures show JP3001JP3002 with micro-min chip resistors and others show them simply bridged hmmm. Yaesu Ft 991A Mods Vhf Jp3001 E Jp3002 Download Masstamilan Alpha.
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