@Cranky Emu after your post mate, I did watch a video on Olivia, and the dude reckons it knocks FT8 out of the water??? I must say, seeing the waterfall show just about nothing and still being able to decode a QSL 10dB under the noise floor is bloody impressive!! I'm thinking maybe get a cheapy HF to leave connected to the PC if I get into it?
FT8 in my opinion is a ****!
It is nothing more then two computers (albeit connected via a radio) handshaking and that's it - That's what the FT proponents define as a contact and get all wobbly at the knee's over.
Olivia (as other modes do) require user input. You have to type your message/qso. As with nearly all of these types of two-way convo digital modes, you will be typing your reply as the person your communicating with is sending theirs, as soon as they finish, you hit send and it whirls away. Otherwise the gap between you reading their text, typing yours and then sending is to long. There are quite a few guys on Olivia, especially on 20m. 141065 from memory, or close to, 16/500 rate is the typical. There is a guy from Japan, Ken (Kenji) who gets on a bit, he is a big digi user, as his English speak isn't so great, but he has no problems with the typography side of it. There was a guy in South Korea as well, although when I was on last he was speaking of moving back to the US then, so I dare say he would have made the hop by now.
Not sure how the G90 would fair with digital modes, but you do need some decent power, at least 100w, think they are only 20w, so you would be pushing it uphill a fair bit. I had an FT-891 and it worked fine, I may even still have the menu settings to get the best out of it if you get one. For the price of the G90, I would definitely recommend saving a few more bickies and getting something along the lines of FT-891. If you are going to run digi, buy a small fan to point at the rear of the radio, it will get hot, as digi is 100% duty cycle, so the finals are working hard, I ran mine at 80 watts just to stay on the safe side when doing digi. But it still got hot!
There are other modes as well, Hellscriber, MFSK, PSK, Throb, Thor and so on. I've never had any contacts on the last two, but have QSO on MFSK with a guy in Tasmania a few times, we yapped a lot using Olivia on 40m.