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Guest Sanglier

700-800, TCAS, IVAO and SquawkBox

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Guest Sanglier

Hi Everybody,First of all, I have to congratulate the Designers Team and also all the Beta Testers for the great job they did in releasing these two new birds.Now, I would like to know when Flying on the IVAO Network(SquawkBox also involved)and when the XPDR has been set to the TA/RA position, if the TCAS has the capability to detect the other birds flying on the network in the vincinity of my bird.Today I was flying on the network with the wonderful 737-800, have had several TCAS alerts from the Squawkbox, but nothing from the 737-800 TCAS ??? PMDG Styles is set to "FSUIPC" and not to "Fs2004".All the best to all of you.Didier DUBREUILH

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Guest tmetzinger

>Today I was flying on the network with the wonderful 737-800,>have had several TCAS alerts from the Squawkbox, but nothing>from the 737-800 TCAS ??? PMDG Styles is set to "FSUIPC" and>not to "Fs2004".Try setting to FS Internal... that seems to work for me with VATSIM and Squawkbox.

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Guest Lenny Zaman

i agree with Tim,set to FS internal and it will work fine. If not try using SBRelay instead of that other thingyCheers

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Guest Sanglier

Hi Tim and Lenny,Thanks for the info. I will try "Fs Internal" to morrow and I will let you know what happened. I think if this setting is OK with Vatsim and SQB, this will work with IVAO and SQB.Thanks again.Didier DUBREUILH

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Guest TrafficTraffic

If you are using the FSUIPC option (default), you also need to run AIBridge. The internal option does not require the use of AIBridge.Lee Hetherington, PP-ASEL (KBED)

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If I done AIBridge and I'm using internal doesn't it say all? :-) If you are using SBRelay VATSIM and IVAO multiplayer should behave the same way.Jos

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Guest dape

I did a flight on Vatsim with the 739 last night using SBRelay Squawkbox and FS9. Also used AIBridge. The TCAS worked perfectly. It was showing all traffic around me. I doublechecked with the Squawkbox TCAS. I couldnt fly without TCAS anymore.David P.

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Hi Lee>> If you are using the FSUIPC option (default), you also need to run AIBridge. The internal option does not require the use of AIBridge. <

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Guest BadKarma

I love PMDG and I really want to enjoy a true functional TCAS II with conflict resolution, however I'm still unable to use it properly.I start SbRelay, FS2004, multiplayer connection, SbHost, SB, connect to VATSIM, AIBridge, load PMDG 737-800/900, set TCAS to TA/RA and I see traffic on SB TCAS, however I only see the word "TRAFFIC" on the PMDG panel, and no traffic symbols.I happens to me using "Internal FS2004", or "FSUIPC" and without any multiplayer session I get same result.I tried on the ground or flying with visible other traffic at 12 o'clock with no traffic alert.Any help would be appreciated.Best regards,Hernan

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Guest BadKarma

>Hi Hernan,>>When you use the FS2K4 multiplayer are you hosting or>joining?>>I'm joining to SBRelay session.Thanks,Hernan

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Hi Hernan,Ok let's try this. First, make sure you have FS Internal set on the PMDG styles menu. Next start up the on-line session as you have described above except, don't start AIBRIDGE. Next log into the ATC network (ex: VATSIM) at an airport where you are sure there is traffic. Turn on the TCAS function on the transponder and then make sure you hit the TFC button on the EFIS panel. Also, at the airport make sure you have the MFD set to map and the distance set to 5 (setting also on the EFIS panel). You should see the traffic at the aiport.Let us know if this works for you.

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Guest rcarlson123

I just quickly skimmed this thread, so this may have already been mentioned, but also remember to check the bias setting. It's a little tiny 3-position toggle switch on the radio panel just above the TCAS on/off rotary switch. It determines what part of the sky the TCAS radar will scan ... above, below, or normal. If you are in level flight, and there are a/c below your altitude, they may not show up on the TCAS unless the bias switch is set for a down bias.I flew from KLAS to KLAX last night in order to test out the TCAS, and I was cruising west at FL260 when LA Center gave me a traffic advisory at 11 o'clock eastbound at FL210 if I remember correctly. I had the bias set for "normal" and didn't see any TCAS targets. So I switched the bias to down, and there he was! I reported the TCAS target to center and continued on my way. Very cool stuff.

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Push the TFC button on the EFIS control panel to the left of the MCP and you will see the traffic as well!Cheers,

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Guest TrafficTraffic

Good point. The bias ABV/N/BLW is just adjusting the vertical range for display. However, it has no effect on the logic. A target that is not displayed that becomes a TA or RA will (should) be displayed regardless of ABV/N/BLW setting. That is to say the setting has no effect on "scanning" of the sky, just display.BTW, I just got finished reading a posting by a real-world ATC of his pet peeves. He says talling him "I have 'em on TCAS" is completely worthless to ATC. It's either visual contact or it doesn't count.Lee Hetherington, PP-ASEL (KBED)

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Guest rcarlson123

Thanks for the clarification Lee. I assumed that the bias switch affected the physical azimuth of the radar scan (as in fighter jet radar and such) ... mainly I assumed this because even with the "display non-threatening aircraft" checkbox checked, I was not seeing aircraft below me without setting the bias to BLW. Seems contradictory to the purpose of that checkbox setting. (I realize I'm taking the wording of that checkbox to the literal extreme, but the checkbox does not in fact display ALL non-threatening aircraft.) I, for one, would prefer to see all aircraft within radar range if that checkbox is checked, since checking that checkbox is removing a bit of realism anyway ... why not?As for telling the controller that you have a target on TCAS, as a VATSIM controller I can only speak for the virtual ATC world, but I can say that I certainly don't mind hearing a pilot tell me he has traffic on TCAS. Granted, it won't change anything about how I handle that aircraft ... I will still maintain radar separation between the two aircraft. But it at least tells me that the pilot has some additional situational awareness regarding that traffic, and knows exactly where to look even as the relative bearing to the traffic changes. If I had a lot of aircraft in the sky, I might move him down the priority list when giving non-urgent traffic callouts in favor of other close-proximity aircraft in my sector.So does it change anything? No. Is it completely worthless? Matter of opinion I guess. At any rate, I can certainly understand how it would become a pet peeve of a real-world controller, especially one that works a busy sector, where every second of time on the radio is precious. I would guess that the controller you read about also considers it a pet peeve when pilots are given traffic advisories and they answer "negative on the traffic, but we'll be lookin'." The last part of that sentence is truly worthless info. :)

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Guest TrafficTraffic

They would want to hear "negative contact" or "traffic in sight." :-)There is no "radar" with TCAS like there is for weather. TCAS operates just by interrogating other transponders, and as such there isn't any azimuth control whatsoever.You'd have to ask Lefteris about how he treats ABV/N/BLW. I'll ping him about the interpretation of "display non-threatening aircraft." In my own IVSI gauge, it is a user option to set the limits for N (can be none). You are right though that it can be nice to see all the traffic. Flying online is a lot more lonely than in the real world, so we really don't need as much filtering.Lee Hetherington, PP-ASEL (KBED)

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The Above/Normal/Below switch work like this. The Above/Below settings will extend (DOUBLE) the distance DISPLAYED for *Poximate Traffic - Other Traffic* ONLY. So really you will be seeing *Proximate and Other Traffic* up to 12 NM and 2400' vertically insted of the normal 6 NM and 1200' vertically (Some Proimate Traffic are shown when vertical ref is unknown but within 6 NM). This does not effect TCAS warnings such as TAs and RAs. If you can picture a imaginary circle around the aircraft as 6 NM and 1200 vertically then setting the switch to ABOVE will extend this UPWARDS but below will still be the default range. Same thing for below. [h4]Best Wishes,Randy J. Smithhttp://www.precisionmanuals.com/images/forum/betaimg.jpgAMD 64 3200+ | ASUS KV8 DELUXE | GFORCE 5700 ULTRA @535/1000 | WD SATA 80 GIG | 512 DDR 400 |

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Guest TrafficTraffic

Where'd you get that doubling thing from Randy? I've heard a lot of other possibilities (could be for IVSIs) where ABV opens up to all traffic up to +10000 above, with no range restrictions. In the NG OM I don't see anything about ABV/N/BLW.Lee Hetherington, PP-ASEL (KBED)

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Guest BadKarma

>Push the TFC button on the EFIS control panel to the left of>the MCP and you will see the traffic as well!>>Cheers,Finally It worked, all I haven't done was to push that tiny button "TFC" on EFIS panel...I really appreciate all you guys that gave me your support.Safety flights...Hernan

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Guest rcarlson123

>There is no "radar" with TCAS like there is for weather. TCAS>operates just by interrogating other transponders, and as such>there isn't any azimuth control whatsoever.Aha! I always assume it was both radar and transponders working together, like it is with ATC. Never even occurred to me that a transponder is enough. How does the TCAS system know where the other aircraft are? For that matter, how does the ATC radar know how to match up a primary radar target with a given transponder signal? Does the transponder signal also include bearing and distance info? (Perhaps in the same way an ILS does?) Totally guessing here ...>You'd have to ask Lefteris about how he treats ABV/N/BLW. >I'll ping him about the interpretation of "display>non-threatening aircraft." In my own IVSI gauge, it is a user>option to set the limits for N (can be none). You are right>though that it can be nice to see all the traffic. Flying >online is a lot more lonely than in the real world, so we>really don't need as much filtering.Indeed. Thanks for the info Lee.

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Guest TrafficTraffic

As you probably know, transponders broadcast pressure altitude to nearest 100' or 25'. The TCAS system estimates bearing with directional antennae on the aircraft to within a few degrees. ATC radar reads bearing by the position of the rotating antenna at the time the transponder reply is received.I am pretty sure that more advanced ADS-B transponders broadcast position and velocity information. For example, GPS position and groundspeed can be broadcast. I think they are using this in remote parts of Alaska in order to provide a radar-like environment where they do not have good radar coverage.Lee Hetherington, PP-ASEL (KBED)

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