From steps-owner@krypton.hpc.sdsmt.edu Fri Jan 14 23:16:44 2000 Received: from ncar.UCAR.EDU by mmm.mmm.ucar.EDU (980427.SGI.8.8.8/ NCAR Mail Server 04/10/90) id XAA12269; Fri, 14 Jan 2000 23:16:43 GMT Received: from krypton.hpc.sdsmt.edu (krypton.hpc.sdsmt.edu [151.159.81.8]) by ncar.UCAR.EDU (8.9.1a/) with ESMTP id QAA26933; Fri, 14 Jan 2000 16:16:42 -0700 (MST) Received: (from majordom@localhost) by krypton.hpc.sdsmt.edu (AIX4.3/8.9.3/8.9.3) id QAA14588 for steps-outgoing; Fri, 14 Jan 2000 16:16:27 -0700 X-Authentication-Warning: krypton.hpc.sdsmt.edu: majordom set sender to owner-steps@majordomo.sdsmt.edu using -f Received: from eagle.ACNS.ColoState.EDU (eagle.ACNS.ColoState.EDU [129.82.100.90]) by krypton.hpc.sdsmt.edu (AIX4.3/8.9.3/8.9.3) with ESMTP id QAA13738 for ; Fri, 14 Jan 2000 16:16:16 -0700 Received: from yuma.ACNS.ColoState.EDU (yuma.ACNS.ColoState.EDU [129.82.100.64]) by eagle.ACNS.ColoState.EDU (AIX4.3/UCB 8.8.8/8.8.8) with ESMTP id QAA53484 for ; Fri, 14 Jan 2000 16:16:15 -0700 Received: from lab.chill.colostate.edu (lab.CHILL.ColoState.EDU [129.82.147.7]) by yuma.ACNS.ColoState.EDU (AIX4.3/UCB 8.8.8/8.8.8) with ESMTP id QAA85360 for ; Fri, 14 Jan 2000 16:16:15 -0700 Received: from dab (dab.CHILL.ColoState.EDU [129.82.147.14]) by lab.chill.colostate.edu (8.9.1b+Sun/8.9.1) with SMTP id QAA13866 for ; Fri, 14 Jan 2000 16:15:13 -0700 (MST) Message-Id: <200001142315.QAA13866@lab.chill.colostate.edu> X-Sender: dave@lab.chill.colostate.edu X-Mailer: QUALCOMM Windows Eudora Pro Version 4.0 Date: Fri, 14 Jan 2000 16:17:12 -0700 To: steps@krypton.hpc.sdsmt.edu From: David Brunkow Subject: Ops center/CSU-CHILL site update Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Sender: owner-steps@krypton.hpc.sdsmt.edu Precedence: bulk Status: RO OPS center communications update Most aspects of the CSU-CHILL site at the Burlington airport are in good shape at this point. We have received the FAA approval for the site on the southern end of the Burlington airport. The city has and CSU have agreed upon the lease terms. We are awaiting quotes on the power installation, but it will be a simple installation. We are ready to go out for bids on the pad as soon as the lease is signed. As reported earlier, the phone line availability is limited. The engineer for Century Telephone indicates that we can get at most two dial-up phone lines of modest bandwidth (would support 28k baud data). He has not received a firm answer from the company as to the possibility of upgrading their network to provide a T1 line to the site. He suggested using a wireless link to cover the 5 miles from the airport to Burlington. Century Telephone has a microwave tower in town which is no longer in use and would likely be available to us. This link may be feasible either through leasing a C-band license-free link, or perhaps purchasing a 900 MHz link. Cell phones can be used at the ops center for routine voice traffic. Getting T1 lines across the 970/719 area code boundary has been problematic, however as of yesterday, it appears that the phone companies have agreed in principle to allow such a connection. The ISP in Yuma (Premier Systems) is trying to extend its T1 network from Kirk to Burlington. If this is in place, SPOL could get a T1 to Kirk and connect to Premier's router. Chill could do an ethernet microwave hop to Century Tel building in Burlington and do a short haul link to Premier's pop site which is expected to be within 1000 feet of the phone company. This arrangement would give us internet access and a fast data path between radars. We would be sharing the Burlington to Kirk (SPOL) path with Premeir's other Burlington customers, however, there are only tens of customers at present. With this arrangement, it would be sensible to limit the data transmitted to the sweep files from perhaps the two lowest sweeps - or take similar steps to avoid saturating the T1 line with radar data. Another other option would be to have a dedicated T1 between the radars and perhaps a second T1 to the ISP. This would increase the costs considerably since longer T1's would be needed and the microwave link and associated equipment would be a more expensive variety. All the figures are not in yet - we should know more by the end of next week. If this internet access scheme falls through, the DirectPC option looks like a good low-cost way to get fast web-browsing at the ops center. It uses a conventional dial-up modem for outgoing requests from the browser, and receives 400k baud data back via satellite modem. Dave -- David Brunkow -- CSU-CHILL Radar Facility -- Phone: 970-491-6248