<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Since Ampex had copyrighted "Videotape", I bet you're right with Television Recorder Tape since the later machines were just "TR".<div><br></div><div>TK - Television Kamera</div><div>TP - Television Projector</div><div>TFR - Television Film Recorder</div><div>TH - Television Helical</div><div><br></div><div><br></div><div>Also, did RCA purchase patents from Ampex or was it a trade for RCA's transistor technology?<br><div><br><div apple-content-edited="true"> <span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><span class="Apple-style-span" style="border-collapse: separate; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; -webkit-text-decorations-in-effect: none; text-indent: 0px; -webkit-text-size-adjust: auto; text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><span class="Apple-style-span" style="border-collapse: separate; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; -webkit-text-decorations-in-effect: none; text-indent: 0px; -webkit-text-size-adjust: auto; text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; "><div><div>Best,</div><div>Park</div><div><br></div></div><div>C. Park Seward</div><div>Cell: 818-535-2747</div><div>Home: 949-679-1870</div><div>Visit us: <a href="http://www.videopark.com">http://www.videopark.com</a></div><br class="Apple-interchange-newline"></span></div></span></div></span><br class="Apple-interchange-newline"> </div><br><div><div>On Jan 28, 2009, at 2:14 PM, John R. Schilberg wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div> Howdy Gang,<br><br> So, what does "TRT" stand for? Tape Recorder Television? Television Recorder Tape (versus "film")?<br><br> John<br><br> =================<br><br> Have knelt before the TR-70A, TR-70C, TR-4, TR-600, AVR-2, AVR-3, ACR-25 (buffer version), VR-1200, VR-2000, VPR-80, Editec<br><br> John Schilberg<br> 13327 Nevermore Drive<br> Cypress, TX 77429<br> N29 57.159 W095 37.482<br><br> Office: 281-955-5151<br> <b>TEMPORARY Cell - 713-725-1655<br> </b>Home: 281-955-1661<br> Fax: 281-955-5118<br> Email: <a href="mailto:jschilberg@swbell.net">jschilberg@swbell.net</a> <br><br></div></blockquote></div><br></div></div></body></html>