What you need to look for is a Transmission Impairment Measurement or TIM Set. HP made a nice one but i can't remember the number. There are several other manufactureres that make various units. Look for one that allows yuo to terminate as well as bridge the circuit. Short of that try to find a Helper Lineman. Good overall unit. Will measure levels/loss and generate preset tones.
Milt N3LTQ ----- Original Message ----- From: "N9WYS" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Friday, April 27, 2007 8:08 PM Subject: RE: [Repeater-Builder] Tone remote setting question My "helper" told me that I need to start looking for test equipment - he's taking a different job and won't have access to the equipment he does now. Inasmuch, what is the test meter called that you use to measure the signal level across/on phone lines? I'm told that I need one that measures in dB, I believe. Thanks! Mark - N9WYS -----Original Message----- From: [email protected] On Behalf Of Dan Blasberg Most of the radio circuits that i remotely test and we (Verizon) engineer are 0, -16 circuits, meaning that the from the telecom interface we are looking for a 0db signal on the transmit side, and when it gets to the other end at the interface card at the station the signal will be -16 db. Dan KA8YPY On Apr 26, 2007, at 10:40 PM, allan crites wrote: > Tim, > The AT&T spec for line loss from the sending end to the central office > is 9 +- 1 dB and from the central office to the receiving end is 9 +- > 1 dB. So your total loss will be 18 +- 2 dB. > I need to find my tone remote manual to get the answers to your other > questions. > WA9ZZU > > "Steve Bosshard (NU5D)" <[EMAIL PROTECTED]> wrote: >> I believe 16 db would be terribly excessive loss for a line - maybe 6 >> db tops. I usually set -10 dbm @ 1000 hz for +/- 3 khz deviation. >> ). 0 dBm for max deviation. and let the tone levels fall into place >> as you have indicated. If the line measures 6 db of loss @ 1000 hz, >> you may want to move the hold tone from -20 dBm to -17 or -14 dBm and >> the remainder accordingly. Also loss may vary with tone frequency, >> so loss at 1000 hz may be far different from loss at 2175 hz. Best >> luck, Steve NU5D >> >> On 4/26/07, tim_shephard <[EMAIL PROTECTED]> wrote: I'm working >> with a GE repeater, Master II. Its tone remoted. It is >>> setup and working, but I'd like to know how to set the tone remote >> >> >> -- >> Ham Radio Spoken Here.....NU5D >> Nickel Under Five Dollars Yahoo! Groups Links
