Bharat, I bought one of those units a few years back, I think from EMCO (800-253-3761) because it sounded like a good idea at the time. A little box with an antenna about 10 inches high, battery powered, puts out comb frequencies covering a wide spectrum. The problem was that it was very low power and hard to pick up. So it sat on the shelf for years. What I did instead was use a signal generator and a dipole antenna. I would wheel out the signal generator, hook it up to a dipole, send out a single random frequency at a reasonable signal strength, and read the emissions on my spectrum analyzer. Then, applying all the corrections for antenna factor, cable losses, pads, and site attenuation, I calculated (backwards) what the signal generator transmit level should be set at and saw if it agreed with the setting. This checked out all portions of my site, and I sometimes unearthed loose cable connections in this way. I have often wondered why this practice is not followed more universally.
Gabriel Roy Hughes Network Systems MD ------------------ snip ------------------------------------------------ Hello, Does any body know a battery operated test device which can emit known signal/s at pre-determined power so that one can determine validity of test site and its associated equipments ? Bharat Shah
