Talk:Secondary surveillance radar

message: Since IFF currently redirects here, there should be a section on its history included in the article, until a separate article can be prepared.  This is out of my field, but it is an obvious gap in coverage unless it is already in some other Wikipedia article.  A check of the article history shows that this article used to be titled Identification friend or foe, and a version from June 2006 indeed has more historical information that has since been eliminated. --Blainster 17:58, 24 February 2007 (UTC)
thread_title: IFF history request

message: US Navy publications: Operations Specialist Volume 01 chapter 8 and Electronics Technician Volume 4-Radar Systems chapter 3 both talk about IFF and SSR. They are public domain documents that the USN released. The links I put here are from tpub, they digitized them, but the information is still public domain. Might be some information in there to add add to this article, I don't have time at the moment, but maybe they will be useful to someone else. Dual Freq 22:25, 8 September 2006 (UTC)
thread_title: Additional Resources

message: I would like to suggest improvements to the overview:
First para third sentence implies that PSR is synonymous with ATC, whereas it is just one of several technologies that support the service - SSR is another.
Second para final sentence implies information is exchanged between the ground PSR and aircraft SSR - in fact it is between the ground SSR interrogator and the aircraft's SSR transponder (terms that are used later in the article and could be introduced helpfully in the introduction).
If you agree, I will attempt changes (as a newbie here I don't want to interfere without first introducing myself).
Trog23 06:07, 13 February 2007 (UTC)
replies: text: Welcome, and don't be afraid to be bold! Edits to correct or clarify are always welcome. If someone disagrees and reverts an edit of yours, simply post a new topic on the Talk (Discussion) page to work it out. You'll find that many articles begin as stubs and accrete more detail in bits and pieces over time — unless someone "adopts" the article and works it to comprehensively improve it. The Talk pages also often have a box at the top of the page informing you of what Wikipedia:WikiProject(s) are interested in the article and these are great places to learn what particular style standards they apply to articles they're involved with. Their Talk pages are a great place for asking questions. If you have any questions I can help with, please post them on my User Talk page. Askari Mark (Talk) 15:40, 13 February 2007 (UTC)
replies: text: OK - thanks.  I have expanded the introductory paragraph, tidied up the ambiguities in the overview and made minor changes at the beginning of the 'Operation' section (a primary radar target can be displayed with a 'tag', but with more limited information). I have tried to do my homework with the guidelines but there is rather a lot there to get my head around so apologies in advance for any blunders. Trog23 07:31, 18 February 2007 (UTC)
thread_title: Overview

message: Identification Friend or Foe systems take many forms, and an IFF transponder is only one type. To lump IFF in with Secondary Surveillance Radar is inaccurate, as the IFF hardware used on fighting vehicles is completely ignored, to say nothing of less technological forms of IFF. To properly cover the types and details involved in the myriad Identification Friend or Foe systems used worldwide, IFF should be broken out into its own article. —The preceding unsigned comment was added by 199.107.67.88 (talk) 15:15, 4 May 2007 (UTC)
thread_title:  Separate IFF Article 

message: This is rather silly that we have two articles differing only by case (Article 1: Identification_friend_or_foe, Article 2: Identification_Friend_or_Foe) with related content. It is confusing to say the least and so I am proposing that we merge them, or if their differences are irreconcilable, then that we at least change the name.-74.12.81.178 05:56, 4 July 2007 (UTC)
replies: text: Uh, no. I suggest merging in the opposite direction. IFF is SSR with mode 4 added. Both articles used to redirect here and still should. Identification Friend or Foe redirects here and is not an article. --Dual Freq 12:38, 4 July 2007 (UTC)

text: I'm with Dual. IFF should redirect to the IFF page. Kevin 02:58, 9 July 2007 (UTC)
replies: text: My apologies, that is not what I meant. What I was trying to say is that Identification Friend or Foe and Identification friend or foe should both redirect to this article, Secondary surveillance radar. The only difference is the additional modes used by the military, and that is covered in this article's modes section. All other modes appear to be the same, at least in US systems. --Dual Freq 03:21, 9 July 2007 (UTC)

text: Since when is IFF a military-exclusive term?  —Preceding unsigned comment added by 71.125.6.132 (talk) 15:03, August 27, 2007 (UTC) 
===SSR===
there is a merge discussion tag on Secondary surveillance radar. Is this in error? I would oppose merging IFoF into SSR, unless there is a danger of overlap in the articles. — Xiutwel ♫☺♥♪ (talk) 19:42, 8 August 2007 (UTC)
thread_title:  Proposed merger 

message: there is a merge discussion tag on Secondary surveillance radar. Is this in error? I would oppose merging IFoF into SSR, unless there is a danger of overlap in the articles. — Xiutwel ♫☺♥♪ (talk) 19:42, 8 August 2007 (UTC)
thread_title: SSR

message: This article was tagged for consideration for merger on 11 December 2007 by PEHowland. The tag was incorrectly constructed and led to the wrong talk page, so that may have slowed down comment on this issue! 
I have started the debate on this proposed merger on the 
Talk:Transponder (aviation) page. - Ahunt (talk) 23:25, 1 January 2008 (UTC)
thread_title: Proposed Merger of [[Transponder (aviation)]] with [[Secondary surveillance radar]]

message: Is someone inserting [citation needed] at the end of every paragraph and at the individual contents of many of the tables?  If so could they please explain the problem.Monopulse01 (talk) 12:55, 15 January 2011 (UTC)
replies: text: Yes I did, as we discussed on your talk page. As explained at WP:V all these additions need to be properly cited with footnotes to reliable references or else eventually they will be removed. - Ahunt (talk) 13:50, 15 January 2011 (UTC)
replies: text: Okay I have fixed a bunch of formatting errors and the removal of a number of "citation needed" tags where no refs were provided, the run-down is in the edit summary for each change. - Ahunt (talk) 19:53, 15 January 2011 (UTC)
thread_title: Citation needed

message: Beware with the "Mode S interrogation, short and long" image. It is wrong and lead to misinformation! Preamble doesn't last 30.5µs, but 3.5µs.
See http://www.radartutorial.eu/13.ssr/pic/mode_s2.print.png as a clarification. 
P1 to P6 its clearly impossible to be 30.5µs!
Please, see page 3-82 from ICAO, Annex 10, Volume IV, Surveillance and Collision Avoidance Systems. I don't know if images from that document could be reproduced here without permission.
More details on the picture discussion page http://en.wikipedia.org/wiki/File_talk:Mode_S_interrogation.jpg
Rapid2k1 (talk) 21:19, 30 October 2011 (UTC)
replies: text: You probably need to take this up with User:Monopulse01 as it is his image and also his text that goes with it. - Ahunt (talk) 22:27, 30 October 2011 (UTC)
thread_title: Mode S

message: Since the IFF article is now separate, this article needs to be reviewed for more appropriate projects.  Because of the referral to SSR as based on IFF, it's appropriate to retain WP:MILHIST.  I've added aviation without assessment but there may be other technology projects I'm not familiar with.  --Lineagegeek (talk) 22:01, 15 February 2014 (UTC)
thread_title: Projects

message: Hello fellow Wikipedians,
I have just modified 4 external links on Secondary surveillance radar. Please take a moment to review my edit. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. I made the following changes:
*Added archive https://web.archive.org/web/20090918115132/http://www.argospress.com/Resources/radar/airtrafficontroradar.htm to http://www.argospress.com/Resources/radar/airtrafficontroradar.htm
*Corrected formatting/usage for http://www.webcitation.org/644kQDbbb
*Added archive https://web.archive.org/web/20120305182708/http://www.eurocontrol.int/airports/gallery/content/public/pdf/13_A-SMGCS_Mode-S_Transponder-in-an-Airport-Environment_v1-1_20050503.pdf to http://www.eurocontrol.int/airports/gallery/content/public/pdf/13_A-SMGCS_Mode-S_Transponder-in-an-Airport-Environment_v1-1_20050503.pdf
*Added archive https://web.archive.org/web/20101230104935/http://www.eurocontrol.int/msa/public/standard_page/nv_modes_homepage.html to http://www.eurocontrol.int/msa/public/standard_page/nv_modes_homepage.html
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thread_title:  External links modified 

message: Suddenly the sentence "The X pulse is not used" comes out of the blue with no explanation. Can anybody elaborate a little bit that text?? thank you  — Preceding unsigned comment added by Werner Stauffacher (talk • contribs) 18:53, 9 February 2018 (UTC)
thread_title:  Interrogation modes