I never see any traffic on ADSB for Ft Riley. I know they fly helicopters I think mostly Blackhawks out of there all the time. Do they use Mode 5 encryption? I see blawkhawks all over the states but not many in KS or Ft Riley. I just saw one just now. https://globe.adsbexchange.com/?icao=ae51d7
I see another one that just popped up. Looks like it's head towards Ft Riley. https://globe.adsbexchange.com/?icao=ae47aa
interesting both helicopters was in Corpus Christie on the same day flying the same area on 1-10-22. update last year in October and November they both was in Germany. Can they fly that far on their own? They sure get around. Update I saw one of them leave the Wichita area and is flying around Salina but i can't see all of it on ADSB but on Flight Aware. I think because the helicopters fly low they don't show up on ADSB because of receiver coverage. I can't see the local med helicopter at Emporia or low flying aircraft with 50 miles of Emporia. I think we need a receiver in this area. if i understood how to set one up i would do it.
I think i know why there's not much helicopter activity at Fort Riley. There's not a working feeder in that area. helicopters fly low so they aren't picked up from the feeders as well. Low aircraft drop off the map about 30 miles south of Salina. After tons of looking i finally found a map that shows the feeders. https://map.adsbexchange.com/mlat-map/ as you can see in my area there is a lack of coverage for low flying aircraft. i can't see the local med helicopter in my area. Everything drops off at Lebo and picks back up at El Dorado KS for anything less then 3,000 feet. So if I can get the money and figure out how to setup a feeder in Emporia I will. I'm a ham and know how to do antennas. but don't know anything about Raspberry Pi. I have a ATCS Monitor server at my house for ATCS Monitor to watch the trains on the dispatcher screen so it's similar. But i use windows for that. As you can see here this plane is at a higher altitude and it tracks much better. It's at 4,700 feet in my area.
ive explained to you before, Mode 5 is selective at pilots discretion or if SOP and OPSEC dictate it has to be running. NO DoD Aircraft is going to be operating outside of Mode 4 or Mode 5 when the following conditions are in effect: Transporting any Member of the Special Forces of any branch of the US Military, is carrying equipment or systems deemed Classified or otherwise restricted to public knowledge. any aircraft in engaged in active combat or combat exercises where live munitions are being actively fired, unless otherwise prior approved to be in Mode 3 or Mode-S while over a Stateside Military Gunnery Range. B-1, B-2, F-22 and F-35's are exempt from ever having to use Mode-S or Mode 3A/C unless said aircraft is in a IFE Condition and is needed to alert high density airspace. No DARPA or Military Prototype aircraft deemed Classified or otherwise restricted from public view will use Mode-S or Mode 3A/C, even if a IFE Condition exists. No UAV, UCAV will use Mode-S or Mode 3 when engaged in Special Operations either by the US Military or the US Government for ISR Platforms engaged in sensitive operations pursuant to Law Enforcement at the Federal Level. ----- Mode 4 is slightly less encrypted than Mode 5, but both cannot be detected by any civilian receiver. Mode 4 works by 3 pulse coded Cypher Challenge. if the transponder does not receive the correct codes in those 3 pulses, the transponder does not send back any information. it becomes a "UNK" ( unknown ) response to any ATC. The Pulse Challenges are encrypted but the return data stream is only encoded partially. it CAN be decoded but it is a royal PITA and a International crime to do so. Mode 5 is 100% Full Duplex ( Transmit and Receive ) Encrypted by cryptographic cypher. it is 100% unreadable to any civilian receiver and is justifiable as a Capital Crime worthy of Treason to reverse engineer or otherwise attempt to decrypt a Mode 5 Transponder. As far as what goes on at Fort Riley, just because you do not see them, does not mean they are all working in Mode 4 or 5. rather you self-disposed that there is a lack of detection and receivers in the area. The main page has a descriptive tutorial on how to setup a ADSB Receiver and there is PLENTY of information on what type of antenna and cabling you will need for it. Might i add, get a small UPS Battery Backup for your Router, Modem and the Raspberry Pi unit, so that it will run 24/7. like i do.
