{"conversationCode":"131-004","tapeNumber":131,"conversationNumber":4,"identifier":"37-wht-conversation-131-004","startDateTime":"1972-05-16T04:01:00.000Z","endDateTime":"1972-05-17T18:26:00.000Z","startDate":"16-May-1972","startTime":"12:01 AM","endDate":"17-May-1972","endTime":"2:26 PM","dateCertainty":"estimated","timeCertainty":"estimated","participants":"Mizzer, John (\"Microwave\"); Camp David Operator; [Unknown person(s)];","description":"John (\"Microwave\") Mizzer, Camp David operator, and unknown person(s) talked on the telephone at Camp David on an unknown date, sometime between 12:01 am on May 16, 1972 and 2:26 pm on May 17, 1972. The Camp David Study Table taping system captured this recording, which is known as Conversation 131-004 of the White House Tapes.","locationCode":"CDST","recordingDevice":"Camp David Study Table","latitudeEstimated":39.648333,"longitudeEstimated":-77.465,"chronCode":3,"chronRelease":"Third Chronological Release","chronReleaseDate":"28-Feb-2002","aogpRelease":null,"aogpSegment":null,"lastModified":"2015-07-27T17:04:10.235Z","findingAid":"Conversation No. 131-4\n\nDate: Unknown between May 16 and 17, 1972\nTime: Unknown between 12:01 am, May 16 and 2:26 pm, May 17\nLocation: Camp David Study Table\n\nJohn (“Microwave”) Mizzer talked with the Camp David operator.\n\n     Request for a call to [Forename unknown] Petrie\n\n     The Camp David operator talked with an unknown man\n\n     Request for a call to Petrie\n\nMizzer talked with Petrie.\n\n     Telephone check\n          -A patch\n          -Local line\n          -Noise\n                                             3\n\n                          NIXON PRESIDENTIAL MATERIALS STAFF\n\n                                     Tape Subject Log\n                                       (rev. 10/06)","filename":["131-004.mp3"],"tapeStart":"00:03:44","tapeEnd":"00:04:51","participantsList":["Mizzer, John (\"Microwave\")","Camp David Operator","[Unknown person(s)]"],"prevCode":"131-003","nextCode":"131-005","transcript":[{"start":0.17,"end":0.65,"text":"Yes, please."},{"start":0.69,"end":1.07,"text":"Petrie."},{"start":2.35,"end":4.05,"text":"Yeah, I got a call for Petrie here."},{"start":5.77,"end":6.29,"text":"Go ahead, please."},{"start":6.43,"end":7.49,"text":"What's up, Major Petrie?"},{"start":7.65,"end":8.54,"text":"Eon, this is Messer."},{"start":8.65,"end":12.06,"text":"Okay, uh, we did patch over, if you want to try it again."},{"start":12.08,"end":14.3,"text":"We tried it, and it's good, Jack, when it's patched over."},{"start":14.68,"end":14.94,"text":"Huh."},{"start":15.64,"end":16.12,"text":"Very good."},{"start":16.52,"end":19.2,"text":"Okay, okay, because, uh..."},{"start":19.84,"end":20.22,"text":"Right."},{"start":20.24,"end":22.3,"text":"Gascon used a local KY-3."},{"start":22.52,"end":23.46,"text":"Right."},{"start":23.48,"end":26.84,"text":"And checked out all of these circuits locally from down here."},{"start":26.86,"end":27.16,"text":"Right, right."},{"start":28.08,"end":28.9,"text":"They were far by."},{"start":28.92,"end":30.74,"text":"No crackling, no noise, no nothing."},{"start":31.12,"end":35.74,"text":"And we had made no changes in the microwave or patching or anything like that since then."},{"start":35.76,"end":38.08,"text":"So it was only like 20 minutes to half an hour ago at the most."},{"start":39.41,"end":40.95,"text":"So I don't know where that noise came from."},{"start":40.97,"end":42.53,"text":"I don't know either, but she was in there."},{"start":42.55,"end":46.75,"text":"Yeah, but I mean, you know, I know as soon as we switch patch over to this other system, we're all right."},{"start":46.83,"end":49.99,"text":"But I just wanted to let you know, just check the dog out thing."},{"start":50.85,"end":51.37,"text":"Okay, then."},{"start":52.44,"end":52.72,"text":"All right."},{"start":52.84,"end":54.58,"text":"Are you going to go through the other ones, too, then?"},{"start":54.94,"end":55.72,"text":"Yeah, I think so."},{"start":55.98,"end":56.34,"text":"All righty."},{"start":56.38,"end":56.88,"text":"Just leave it."},{"start":57.12,"end":57.35,"text":"Right."},{"start":57.45,"end":57.81,"text":"Okay."},{"start":57.87,"end":58.03,"text":"Bye."}],"aiSummary":{"text":"John Mizzer coordinates with Camp David operators and Major Petrie to troubleshoot persistent line noise during telephone communications. The participants verify the integrity of local circuits and microwave patching systems to identify the source of the interference. They conclude that switching to an alternative patch successfully clears the connection and agree to conduct further testing on remaining circuits.","topics":["Telecommunications","Technical support","Camp David","Line interference","Infrastructure testing"],"generatedAt":"2026-04-06T08:20:04.297Z"},"topicSlugs":["telecommunications","technical-support","camp-david","line-interference","infrastructure-testing"],"audioDurationSec":66,"audioFiles":[{"file":"131-004.mp3","bytes":2643399,"durationSec":65.93,"bitrate":320736,"missing":false}],"audioIsShared":false,"audioProbedAt":"2026-09-18T02:19:32.998Z","audio":["https://nixon.nyc3.digitaloceanspaces.com/audio/131-004.mp3"],"url":"https://www.easynixon.org/tapes/131-004","nixonLibraryUrl":"https://www.nixonlibrary.gov/white-house-tapes/131/conversation-131-004","license":"Public domain (U.S. Government work). AI-generated fields (transcript, aiSummary) are provided as-is without warranty."}