Accessing a TK50 or TK70 from RT

Rod Smallwood rodsmallwood52 at
Tue Jun 14 10:12:27 CDT 2016

On 14/06/2016 12:19, Lionel Johnson wrote:
> On 14/06/2016 4:40 AM, Jerry Weiss wrote:
>>> On Jun 13, 2016, at 12:55 PM, Rod Smallwood 
>>> <rodsmallwood52 at> wrote:
>>> On 13/06/2016 17:20, Rod Smallwood wrote:
>>>> I just had a thought is the magnet in a microwave cooker magnetron 
>>>> permanent or electro?
>> A rare earth magnet savaged from a disk drive or a banned child toy 
>> (aka BuckyBalls) might be more effective.
>> Jerry
> When I worked on this gear, we kept a magnet assy from a CDC 9762 80mb 
> drive under the bench in a safe place, and used it to bulk-erase any 
> tapes as needed. The magnets from a RA81 failed cartridge are very 
> small and powerful, will do nicely. I keep a few in my workshop for 
> gen duty screw pickup, etc.
> Lionel.
I though I'd pursue  the mag mount route
flipping the mount over shows a center puck like magnet made from a 
metal and about an inch and  quarter across.
Then there's  a  gap of  a quarter of an inch and then an annular 
ferrite  ring about six inches across.
The central magnet seems the stronger of the two and a compact tape 
cassette will stick to it.
So I'll rotate the cartridge through the magnetic field and see if that 
erases it.

Anybody know what this is about?
MSCPCK-I-MU0-FW Rev level is 003/HW Rev level is 000

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