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=-1.0 required=5.0 tests=MAILING_LIST_MULTI autolearn=ham autolearn_force=no version=3.4.4 Received: (qmail 7094 invoked from network); 27 Nov 2021 16:09:40 -0000 Received: from minnie.tuhs.org (45.79.103.53) by inbox.vuxu.org with ESMTPUTF8; 27 Nov 2021 16:09:40 -0000 Received: by minnie.tuhs.org (Postfix, from userid 112) id 8A9D59CEAD; Sun, 28 Nov 2021 02:09:37 +1000 (AEST) Received: from minnie.tuhs.org (localhost [127.0.0.1]) by minnie.tuhs.org (Postfix) with ESMTP id 5D14B9CE5D; Sun, 28 Nov 2021 02:07:51 +1000 (AEST) Received: by minnie.tuhs.org (Postfix, from userid 112) id B968F9CE5D; Sun, 28 Nov 2021 02:07:49 +1000 (AEST) Received: from minun.buric.co (minun.buric.co [51.15.8.196]) by minnie.tuhs.org (Postfix) with ESMTP id 414D494942 for ; Sun, 28 Nov 2021 02:07:49 +1000 (AEST) Received: by minun.buric.co (Postfix, from userid 1000) id 09C4035C0FB0; Sat, 27 Nov 2021 17:07:45 +0100 (CET) Received: from localhost (localhost [127.0.0.1]) by minun.buric.co (Postfix) with ESMTP id EA7A035C0046; Sat, 27 Nov 2021 11:07:45 -0500 (EST) Date: Sat, 27 Nov 2021 11:07:45 -0500 (EST) From: Steve Nickolas X-X-Sender: mary@sd-119843.dedibox.fr To: Charles H Sauer In-Reply-To: Message-ID: References: <20211127152527.591D518C07B@mercury.lcs.mit.edu> <1ae0c3f8-fc2b-84a9-442b-e591dca591fd@technologists.com> User-Agent: Alpine 2.21 (DEB 202 2017-01-01) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII; format=flowed 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: , Cc: tuhs@minnie.tuhs.org Errors-To: tuhs-bounces@minnie.tuhs.org Sender: "TUHS" On Sat, 27 Nov 2021, Charles H Sauer wrote: > 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. That's 129F, so pretty much the same diff. -uso.