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The homebrew High Band playback mod done at then-Kaiser WKBD Detroit, was designed by my good friend, the very brilliant Michael Hennessey.<div>Before Mike joined the WKBD staff, he had worked with me at Wayne State University TV. He and WKBD provided us with a copy of the instructions for this procedure, which I installed on our TR-4.</div><div>This allowed for playback, but not record, of tapes made on our TR-70 and from outside sources.</div><div>I still have a copy of Mike's detailed instructions, drawings and photos for this project.</div><div><br></div><div>Regarding the TR-5, it was our Remote machine and backup studio recorder at WSU in the monochrome days.</div><div>Yes, it took at least two men and an ox to push it up the ramp into the truck, and haul-in remotes were always a great treat.</div><div>Ours had wheels with at least two locking. HW panels were ball bearing, no air kit.</div><div><br></div><div>Chuck Reti</div><div>Detroit MI</div><div>WV8A<br><div><div><br></div><div>On Apr 9, 2012, at Apr 9 1:58 AM, Dale Lamm wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; 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: 0px; font-size: medium; "><span class="Apple-style-span" style="font-family: Arial; font-size: 13px; "><div>Hi-banding was an expensive operation for a small station in the 70's. We had moderate success hi-banding (playback only!) a couple well-used TR-22's by following a homebrew procedure given to us by some helpful folks at a Kaiser Broadcasting station in Detroit, where the non-RCA conversion was probably designed. Widening out the bandwidth of the RF stages was a big part of the process.</div></span></span><br class="Apple-interchange-newline"></blockquote></div><br></div></body></html>