[QuadList] save htis and look tr4 converts to hi band but alsoneed modul...

[chill315 at aol.com]

Yes ball bearing heads are stable.  The TRT that I had used only ball bearing heads.  The residual jitter is not that bad.  You will never see it in black and white.  

Chris Hill

On Apr 9, 2012, at 1:52 PM, COURYHOUSE at aol.com wrote:

> were the BB headwheels  stable!?
>  
> Ed#
>  
>  In a message dated 4/9/2012 7:05:20 A.M. US Mountain Standard Time, cwreti at gmail.com writes:
> The homebrew High Band playback mod done at then-Kaiser WKBD Detroit, was designed by my good friend, the very brilliant Michael Hennessey.
> 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.
> This allowed for playback, but not record, of tapes made on our TR-70 and from outside sources.
> I still have a copy of Mike's detailed instructions, drawings and photos for this project.
> 
> Regarding the TR-5, it was our Remote machine and backup studio recorder at WSU in the monochrome days.
> 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.
> Ours had wheels with at least two locking. HW panels were ball bearing, no air kit.
> 
> Chuck Reti
> Detroit MI
> WV8A
> 
> On Apr 9, 2012, at Apr 9 1:58 AM, Dale Lamm wrote:
> 
>> 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.
>> 
> 
> =
> 
> Please trim posts to relevant info when replying.
> 
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