** Reply to message from "Leon D. Zetekoff" <os2-wireless_users@2rosenthals.com> on Mon, 11 Feb 2008 12:43:36 -0500
Why not just use one of the dozens of cordless pones and be done with it. Just connect the base unit up
to where you do have a connection to the twisted pair wire and keep the phone in the room without the
wiring. For about $40 you can get a kit with 2 phones so the 2nd phone has a small charging station.
I wouldn't touch putting the ~48v ac signal and voice calls over coax when it's so cheap and easy to just
use a cordless setup.
Doug
> 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. 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? >
> 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
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> =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= > > -- *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? The following text was extracted from HTML: 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. 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? 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
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> 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) =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
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