What is "type-wri-toon?" It doesn't show up on a search.
----- Original Message -----
From: "Ted Kendall" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Wednesday, November 04, 2009 7:30 AM
Subject: Re: [ARSCLIST] power line frequency
> At the risk of telling everybody something they already know, the
> Tonschreiber had a wide range of capstan speed to facilitate its purpose
> in life, which was to protect U-boats from the Allies' Huff-Duff detection
> apparatus. This, using two orthogonal antennae and a Lissajous display,
> could generate a practically instant fix from a U-boat transmission. The
> solution adopted was to record Morse at slow speed, replay at high speed
> to keep the transmission as short as possible and restore pitch with the
> rotating head-drum.
> ----- Original Message -----
> From: "Shai Drori" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Wednesday, November 04, 2009 7:08 AM
> Subject: Re: [ARSCLIST] power line frequency
>> The solution is very simple. The capstan of the Tonschreiber did not run
>> off the incoming AC but had an oscillator and amplifier as a servo. It
>> could run at any speed from I think 9 to 130 cm/sec.
>> Richard L. Hess wrote:
>>> At 07:09 PM 2009-11-03, you wrote:
>>>> From: Patent Tactics, George Brock-Nannestad
>>>> The story continues. I would not be surprised to learn that northern
>>>> records were cut with machines run off 14 Hz or 16 2/3 Hz, which were
>>>> in use
>>>> for traction purposes. Let us see if a type-wri-toon will work here:
>>>> ;-) -
>>>> yes, it did.
>>> Hi, George,
>>> One thing that intrigued me is that the Tonschreiber version of the
>>> Magnetophon which was analyzed in depth after WWII by some Army
>>> Engineers who appeared to do a good job apparently could work from 25-60
>>> Richard L. Hess email: [log in to unmask]
>>> Aurora, Ontario, Canada (905) 713 6733 1-877-TAPE-FIX
>>> Detailed contact information:
>>> Quality tape transfers -- even from hard-to-play tapes.