Ok I have seen a new H920 for sale at a very good price without camera. I understand the H920 is no longer supported by Yuneec, is that correct?
Will I still be able to get a CGO4 I assume a GH4 will not fit?
I understand there are few autonomous features?
This has an ST24, are they out of production?
I want this as a cheap way to get a GH4 in the air, for video and Inspection work. Do you think I should consider this or would I be buying an obsolete a/c?
You would be better served with a 920+ for the applications you described as it offers a few more simple automated features. The threads that best describe the system are indeed long but would you be satisfied if someone simply said "great aircraft, you should buy one" or "terrible aircraft, run from it"? As you are asking questions you are in search of answers, and I'm sure there are a lot more questions you'll ask before deciding, and many of them are provided answers in the other threads.
Is the 920 obsolete? Absolutely, and it was obsoleted the moment they converted them to the 920+, which is in it's own way further obsoleted by the conversion from 920 to 920+. Rather than go into all the reasons why and how I'll let you read some other threads in here that cover all that well.
Because both are obsolete in no way reduces their functionality. They work for a lot of different purposes quite well but someone looking for an automated, tap to fly aircraft will not be satisfied. They are extremely stable, their size permits LOS ops at considerably longer range that the usual gamut of 400mm-600mm dimension aircraft will allow, shoot truly great video and pretty **** good stills in various formats. You do have to spend a little time with the camera to learn how all of the functions work. The 920+ with a CGO-4 has a 14-42mm zoom lens which allows the aircraft to stand off a safe distance from the subject and still acquire a very clear 16Mpxl photo that does not have to be enlarged to see what you need to see. The 920+ accepts
ONLY the CGO-4, and a CGO-3 if a gimbal adapter is obtained. If you desire to use other cameras only the original 920 will permit that. However, the CGO-4 is a spin off of the GH-4 so it may already have all you need to get things done. A 920 will provide pretty good flight time if you avoid factory batteries and use after market batteries. All that is well covered in another thread.
For the moment parts are available, with the UK and EU appearing to provide better service than the U.S. Retract actuators do not appear to be available so take care of the landing gear. Since it's easy to land you have to try hard to damage the gear during a landing.
Yep, it's obsolete but just about anything over three months old is obsolete. The manufacturers want things to be that way as it opens the door for them to sell new stuff with minor to moderate upgrades to all their customers every 6 months or so. They really like to repeatedly pick their customer's pockets as they prefer to charge for all the new stuff that could easily be added at nominal cost or through firmware upgrades for free. The 920 is stable in software, firmware, and hardware. What you see is what you get and there won't ever be any more stuff thrown at it that might or might not work as advertised.
Write down what you need or want to do and what you absolutely must have to accomplish them. Review what has already been written about the 920/920+ here and in the Facebook 920/920+ Owner's Group. Recognize that no more will ever be made available and you may want to order some spare parts after obtaining a 920 to assure you have them if and when they become needed. If a 920 is a tool that will fulfill the need satisfactorily then consider buying one. If you want to keep up with the "Jone's" you don't want a 920. The best multirotor I have (3DR X-8) became obsolete almost 4 years ago, but it's still in use because it will still do many things better than any current consumer drone. It's just limited by how much camera it can carry.
