Mike Borgelt wrote: >We live in interesting times. The fine detail of ADSB implementation >will indeed be fascinating.(code for GA and sport aviation gets screwed >- again. > What exactly does this mean mike, I haven't seen any inference that anyone is being screwed. Maybe you should attend the ABIT meetings to represent your opinion, as the GFA and sports aviation are invited. These meetings determine the direction and nature of new technology being introduced, and quite frankly it is poorly attended by the ones who are criticising. Another quick lesson on ADS-B, it's not a 1090 system, rather it's a standard for reporting air navigational data. 1090Mhz was adopted by us as an easy way to get it up and running, as most of the upper airspace guys have mode S equipment and it was in most cases a software upgrade. As for the lower airspace, the prices are coming down, equipment is getting more power efficient and whilst not my personal choice for transmission, in our environment it seems to work fine. ADS-B in the USA on the other hand, will go UAT ( Universal Access Transceiver ) which is 900Mhz and Europe is looking at VDL mode 4 ( VHF data link ).
The requirement for 2 per second transmissions may be changed for some surveillance, as is also the case with transmitted power ( gliders, balloons etc ). These things are being discussed currently at the ABIT meetings as ADS-B 1090 is an evolving technology, therefore it is important that is it is represented by qualified technical people representing the sports and recreational community - to date I haven't seen any, but then I havn't been to them all. * note, these meetings are not funded by the Government, we who attend pay for this out of our own money. The other item missing from the discussion is that ADS-b was not designed for aircraft to aircraft crash avoidance, rather it is system designed to replace the current SSR environment, anti collision was a bonus, as all the aircraft squitter on a single channel and can be decoded on a receiver. If the gliding community wants to adopt a separate anti collision system, I would be just as interested in engineering that solution as I have been with ADS-B provided a universal standard is adopted, which requires the current companies that have systems to agree to release the protocol and the manufacturers are indemnified from litigation should the system fail and people die. ADS-B doesn't indemnify us either, but at least I can refer to the 1,000 pages plus specifications! On a final note and my last post, anyone who has a gripe with what is proposed should ASAP write it down, send it to ASA and your local member, sporting group ( GFA, SAAA etc ) and go on the records as having done something either for or against. Alternatively, send an email to my address below and I will hand it over at the next meeting in June, not for discussion at the meeting, rather to make sure it gets to the right person for his review. Cheers Nigel Nigel Andrews Managing Director RF Developments Pty Ltd "A Queensland Company devoted to Research and Development in aviation electronics" Email [EMAIL PROTECTED] Web www.rf-developments.com Ph: (61) 7 54635670 Fax: (61) 7 54635695 **************DISCLAIMER************ The information contained in the above e-mail message or messages (which includes any attachments) is confidential and may be legally privileged. It is intended only for the use of the person or entity to which it is addressed. If you are not the addressee any form of disclosure, copying, modification, distribution or any action taken or omitted in reliance on the information is unauthorised. If you received this communication in error, please notify the sender immediately and delete it from your computer system network. -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Robert Hart Sent: Tuesday, May 24, 2005 8:56 PM To: Discussion of issues relating to Soaring in Australia. Subject: Re: [Aus-soaring] FLARM Mike Borgelt wrote: >We live in interesting times. The fine detail of ADSB implementation >will indeed be fascinating.(code for GA and sport aviation gets screwed >- again. > Wow - lots of very interesting stuff in just a day - this list is really amazing in terms of the expertise that it has available! I rather hope that GA & sport aviation won't be screwed -by the ADSB implementation. Given the ADSB realities as people see them now, what position should gliding be taking, what should we be arguing and with what data to back us up? -- Robert Hart [EMAIL PROTECTED] +61 (0)438 385 533 Brisbane, Australia http://www.hart.wattle.id.au _______________________________________________ Aus-soaring mailing list [email protected] To check or change subscription details, visit: http://lists.internode.on.net/mailman/listinfo/aus-soaring _______________________________________________ Aus-soaring mailing list [email protected] To check or change subscription details, visit: http://lists.internode.on.net/mailman/listinfo/aus-soaring
