From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=-3.6 required=5.0 tests=MAILING_LIST_MULTI, NICE_REPLY_A autolearn=ham autolearn_force=no version=3.4.4 Received: (qmail 5764 invoked from network); 27 Nov 2021 16:00:57 -0000 Received: from minnie.tuhs.org (45.79.103.53) by inbox.vuxu.org with ESMTPUTF8; 27 Nov 2021 16:00:57 -0000 Received: by minnie.tuhs.org (Postfix, from userid 112) id E0C1E9CED6; Sun, 28 Nov 2021 02:00:47 +1000 (AEST) Received: from minnie.tuhs.org (localhost [127.0.0.1]) by minnie.tuhs.org (Postfix) with ESMTP id C7CFD9CE68; Sun, 28 Nov 2021 01:58:52 +1000 (AEST) Received: by minnie.tuhs.org (Postfix, from userid 112) id C7F099CE5D; Sun, 28 Nov 2021 01:58:50 +1000 (AEST) Received: from rooster.satexas.com (rooster.satexas.com [207.235.90.2]) by minnie.tuhs.org (Postfix) with ESMTPS id 6962594942 for ; Sun, 28 Nov 2021 01:58:50 +1000 (AEST) Received: from localhost (localhost [127.0.0.1]) by rooster.satexas.com (Postfix) with ESMTP id A84511C2A89 for ; Sat, 27 Nov 2021 09:58:49 -0600 (CST) Received: from rooster.satexas.com ([127.0.0.1]) by localhost (rooster.satexas.com [127.0.0.1]) (maiad, port 10024) with ESMTP id 58452-10 for ; Sat, 27 Nov 2021 09:58:49 -0600 (CST) Received: from [192.168.147.6] (rrcs-71-42-153-195.sw.biz.rr.com [71.42.153.195]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: csauer@nwhillsumc.org) by rooster.satexas.com (Postfix) with ESMTPSA id 02E0C1C2A88 for ; Sat, 27 Nov 2021 09:58:48 -0600 (CST) Message-ID: Date: Sat, 27 Nov 2021 09:58:52 -0600 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; rv:91.0) Gecko/20100101 Thunderbird/91.3.2 Content-Language: en-US From: Charles H Sauer To: tuhs@minnie.tuhs.org References: <20211127152527.591D518C07B@mercury.lcs.mit.edu> <1ae0c3f8-fc2b-84a9-442b-e591dca591fd@technologists.com> In-Reply-To: <1ae0c3f8-fc2b-84a9-442b-e591dca591fd@technologists.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Virus-Scanned: World Net ProMail v2.0.0 Subject: Re: [TUHS] tape "baking" [was PL/I stuff - was: Book Recommendation X-BeenThere: tuhs@minnie.tuhs.org X-Mailman-Version: 2.1.26 Precedence: list List-Id: The Unix Heritage Society mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: tuhs-bounces@minnie.tuhs.org Sender: "TUHS" On 11/27/2021 9:53 AM, Charles H Sauer wrote: > The notion of "baking" is slightly misleading. When done with audio > tapes, the practice is to use a dehydrating oven at about 130F for about > 24 hours. Ampex patent 5,236,790 says 54C for 16 hours. -- voice: +1.512.784.7526 e-mail: sauer@technologists.com fax: +1.512.346.5240 Web: https://technologists.com/sauer/ Facebook/Google/Twitter: CharlesHSauer