From: "Mark Henigan" Received: from [192.168.100.201] (HELO mail.2rosenthals.com) by 2rosenthals.com (CommuniGate Pro SMTP 5.1.3) with ESMTP id 1702116 for os2-wireless_users@2rosenthals.com; Wed, 13 Feb 2008 07:22:16 -0500 Received-SPF: none (secmgr-ny.randr: 69.147.64.97 is neither permitted nor denied by domain of sbcglobal.net) client-ip=69.147.64.97; envelope-from=driven_zen@sbcglobal.net; helo=smtp124.sbc.mail.sp1.yahoo.com; Received: from smtp124.sbc.mail.sp1.yahoo.com ([69.147.64.97]) by secmgr-ny.randr with smtp (Exim 4.43) id 1JPGcH-0002vS-K0 for os2-wireless_users@2rosenthals.com; Wed, 13 Feb 2008 07:21:40 -0500 Received: (qmail 39443 invoked from network); 13 Feb 2008 12:21:20 -0000 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=sbcglobal.net; h=Received:X-YMail-OSG:X-Yahoo-Newman-Property:Message-ID:Date:From:User-Agent:X-Accept-Language:MIME-Version:To:Subject:References:In-Reply-To:Content-Type:Content-Transfer-Encoding; b=n5cHsOYbj+kbJJEJxbW3zXt9WaRLxxPBydBmf3Scucyh+sSq1uAW79GOUwEux0hs1rRiraWKl/kzPMsgdyV3nyy/OxUmqkJ6DTOMEIWswfNIBD1vLqirpDZJPN6lKHACvGtJmP/HSicPewUT5mVNwJ1+Y6YegToQPz2bGWoaNRY= ; Received: from unknown (HELO ?192.168.1.102?) (driven_zen@sbcglobal.net@75.18.127.237 with plain) by smtp124.sbc.mail.sp1.yahoo.com with SMTP; 13 Feb 2008 12:21:20 -0000 X-YMail-OSG: pqrq_w4VM1nE9BSncWU85ICSmVtjDL_UqM0qhrcynJQ2bR9axZaFyVAyMFRcH0qHFCMouZjtLXm07yB59f_UhT3wx7zPsM9Q1Pk- X-Yahoo-Newman-Property: ymail-3 Message-ID: <47B2E0FA.6080809@sbcglobal.net> Date: Wed, 13 Feb 2008 04:22:18 -0800 User-Agent: Mozilla/5.0 (OS/2; U; Warp 4.5; en-US; rv:1.7.12) Gecko/20050922 X-Accept-Language: en-us, en, cs MIME-Version: 1.0 To: OS/2 Wireless Users Mailing List Subject: Re: [OS2Wireless] VOT (very off-topic) References: In-Reply-To: Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Score: 0.0 (/) X-Spam-Report: _SUMMARY_ Leon D. Zetekoff wrote: > Mark...I would NOT use coax. Most telephone cables of recent vintage > should have at least two pairs in there and one is usually unused unless > you've got a second phone line. So what I would do is check the existing > wiring and use the unused pairs and then tap that off with a junction > box somewhere. Otherwise either tie a telco cable to the coax and pull > it through the wall or just drill a hole and run a cable. Hello Leon: I have now installed the line via the run of coax and have found that the "static" that existed on the line initially has resolved. It's a good, solid connection. I must be doing a terrible job of describing the physical setup. What you are suggesting makes no sense whatsoever with the situation I was facing. The telphone wiring that is already in use runs nowhere near the room in which I needed to connect. For such a limited application the characteristics of coax do not seem to matter much. I measured no resistance at all with my multimeter set to megohms. That means that there was no current flow, i.e, that the resistance was infinite as far as the meter could tell. These new solid state meters (Fluke) have input impedances that rival the old VTVMs and can measure a broad range of values. Capacitance was also very small. In another setting I would have probably paid the telephone company to have some poor fool crawl around in the attic or some other space where they could run the cable while contracting pulmonary histoplasmosis or coccidiomycosis from the pigeon droppings. :-< Thanks for your thoughts. - Mark Mark Henigan -- > That's my $0.02. ;-) > > leon > > * Mark Henigan wrote, On 2/10/2008 10:29 PM: > >>> Mark Henigan wrote: >>> >>>> A very off-topic question aimed at anyone on the >>>> list with telco experience. >>>> >>>> I have a second phone line to install that only >>>> needs to run to one room. There is already an >>>> unused coaxial cable from a previous installation >>>> by a cable TV company connecting the area of the >>>> junction box to that room. The incoming phone >>>> line is only a two-wire connection. Would the >>>> impedance/capacitance/inductive load of the coax >>>> be compatible with a telephone connection? I'm >>>> trying to save the trouble of installing >>>> additional premises wiring in a house that we >>>> rent. Making adapters to allow modular >>>> connectors to interface with the coax is no >>>> problem for me so long as the characteristics >>>> of the line would allow it. >>>> >>>> TIA, >>>> >>>> - Mark >>>> >>>> Mark Henigan >>> >>> >> Ed Durrant replied: >> >>> Phone lines are usaually 600 Ohm impedance, co-ax on the other hand >>> is 50 or 75 Ohm. >>> >>> I'd try it since it's there - the worst that I would expect is that >>> the volume on one or both phone units will be lowered and if that's >>> the case you can easily disconnect the cable. Chances are it'll work >>> fine. >> >> >> Hello Ed: >> >> I think I need to describe the situation a little >> more clearly, given your reply and several others. >> >> I am talking about a second telephone line, not >> splitting a single phone line. The new line is >> for my business number. It runs to my home >> because I am only in the office with a door that >> bears my name one day a week. So, I chose to have >> the address listed as the office location but the >> installed line at my home where I could have more >> efficient access to it. My wife is my assistant >> and will be able to use the line for reception of >> messages and to schedule appointments. >> >> The telephone company (AT&T) originally installed >> it without installing a connector kit on the >> connection box inside a small metal access door >> on the side of the house. I called and was able >> to get them to send a repair person to install the >> connector kit (it includes a screw-down terminal >> strip and a modular jack) so that I can install >> the premises wiring. >> >> There is a run of coax from the access box to the >> room that I intend to use as an office. It was >> installed on the outside of the house and is no >> longer than 15 feet. There is no telephone line >> to that room. The other telephone jacks in the >> house are connected to our home number. This >> means that there is no run of cable or telephone >> wire to use to pull through new wire. There is >> also no point for access to the new line where it >> can be easily connected to the electrical power >> wiring of the house. Note that the other side of >> the wall where the access box is located is the >> garage and would allow a surface run of telephone >> wiring to a point where I could drill vertically >> to enter the wall of the office room. However, >> the coax is already installed and enters the room >> next to the desk. It will only carry standard >> telephony and possibly fax (not a show-stopper if >> it is impractical). >> >> Standard analog telephony uses approximately 40V >> connections, although Will makes the point that >> the ring tone is at 135V. The use of UTP for the >> majority of connections leverages both its >> ability to cancel inductive interference and its >> differential signal. However, a short run of >> coax can avoid induction and can carry signal >> through both shielding and center wire. In some >> audio frequency applications the shielding of >> coaxial cable (admittedly with different >> construction and characteristics such as >> microphone cable) is intended to carry current; >> although this causes ground loops in many >> configurations requiring isolation transformers). >> I realize the foil shielding of much HF coax is >> not a great conductor. However, it should be >> adequate from what others (Ed and Jeffrey) have >> said. If, as noted by Jeffrey the cable or >> connectors are of poor quality or condition, I >> can always install a new connector (I have a >> compression type installation tool.) or remove >> the cable and install telephone cable in its >> place. I'd rather avoid the latter since the >> cable enters the house of the second floor. >> >> So, thank you all for your suggestions and >> thoughts on this rather confounded question! >> I'll try the installation using the coax and >> revert to replacing (or adding a run of phone >> cable in parallel with) the coax if it does >> not work. >> >> Again many thanks! There is so much knowledge >> available on this list! >> >> - Mark >> >> Mark Henigan >> -- >> >> =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= >> This message is sent to you because you are subscribed to >> the mailing list . >> To unsubscribe, E-mail to: >> To switch to the DIGEST mode, E-mail to >> >> To switch to the INDEX mode, E-mail to >> >> Send administrative queries to >> >> To subscribe (new addresses), E-mail to: >> and reply to the confirmation >> email. >> Web archives are publicly available at: http://lists.2rosenthals.com >> >> This list is hosted by Rosenthal & Rosenthal, LLC >> P.O. Box 281, Deer Park, NY 11729-0281. Non- >> electronic communications related to content >> contained in these messages should be directed >> to the above address. (CAN-SPAM Act of 2003) >> >> =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= >> >> > > -- > *Leon Zetekoff* > Proprietor > *Work:* 484-335-9920 > *Mobile:* 610-223-8642 > *Fax:* 484-335-9921 > *Email:* wa4zlw@arrl.net > *http://www.linkedin.com/in/leonzetekoff* > *BackWoods Wireless* > 505 B Main Street > > Blandon, PA 19510 > "Bringing Broadband Technology to Rural Areas" > > See who we know in common Want > a signature like this? > > =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= > This message is sent to you because you are subscribed to > the mailing list . > To unsubscribe, E-mail to: > To switch to the DIGEST mode, E-mail to > To switch to the INDEX mode, E-mail to > Send administrative queries to > To subscribe (new addresses), E-mail to: and reply to the confirmation email. > Web archives are publicly available at: http://lists.2rosenthals.com > > This list is hosted by Rosenthal & Rosenthal, LLC > P.O. Box 281, Deer Park, NY 11729-0281. Non- > electronic communications related to content > contained in these messages should be directed > to the above address. (CAN-SPAM Act of 2003) > > =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= >