Surprised? ADS-B is not perfect, and this is actually an argument against “cheap” ADS-B and in favor of a dual ADS-B “In”solutions. The data is more reliable if you are transmitting an ADS-B Out beacon. However, this rebroadcast comes from the ground, so if you’re flying low or outside the range of an ADS-B ground station, you may not see that traffic. airspace is a dual frequency situation. If you’re receiving ADS-B on 978 MHz only (a UAT) and you’re sharing airspace with a commercial aircraft on 1090, you’ll see their location, altitude and velocity via a rebroadcast from ATC, which we are told arrives seconds later. above 18,000 feet must use the 1090 option. However, our FAA decided that GA aircraft flying below 18,000 feet could operate on 978 MHz and use a UAT. This data is delivered into the ATC system by either a Mode S ES (Extended Squitter) transponder or a universal access transceiver or transmitter (UAT). Mode S transponders operate on 1090 MHz, which has become the international standard. ADS-B “Out” requires a WAAS-corrected GPS position source (generally accurate to about seven feet) plus information about the status of your flight as provided by your GPS, including your current Altitude and Velocity (Groundspeed from GPS not Airspeed) combined with your aircraft’s information. ADS-B Reviewīefore we talk about the affordable options that exist today, let’s review some of the basics as well as a few terms relevant to your ADS-B purchase.įirst of all, let me remind you that the requirement to meet the ADS-B mandate is for ADS-B “Out” only. In fact, many avionics shops report that they are booked out three to four months in advance and it’s not likely to get much better before the January 1, 2020, deadline. Avionics shops reported a serious upturn in their fourth quarter business and they’re pointing to ADS-B as the reason. However, it’s becoming increasing apparent that it’s time they do. Suffice it to say I’m a bit surprised to be including Garmin in an article on cheap ADS-B!įrom 2014-2016 and throughout most of 2017, it appears that the average GA aircraft owner hasn’t been taking ADS-B very seriously. I’ve said it before and I’ll repeat it here: we often think of Garmin for cutting-edge technology, but the word “affordable” is seldom connected. Today, even Garmin is involved, and that’s something I did not anticipate. Naturally, some owners won’t be happy until someone introduces a portable GPS with ADS-B “In” and “Out” for $995! That’s not going to happen, but ADS-B “Out” compliance is getting cheaper. As expected, the marketplace has expanded considerably since then, yet cries for a cheaper ADS-B solution continue to echo through the halls of avionics shops everywhere. In that article, we discussed ADS-B basics, and in the subsequent March edition we reviewed the products that were available at the time. My first article on ADS-B appeared in the February 2015 issue of this magazine. Reprint from Cessna Owners and Pipers Magazines-April 2018 JUST WHAT I WAS LOOKING TO OBTAIN!!” Mike Brown, 2003 Cessna T182T, Michael Edwin Madison Aircraft, Chattanooga, TN 7/19 ADS-B On the Cheap – April 2018 Paying you is the very best money I have ever spent in aviation. I just had an opportunity to read your report.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |