The only true method of performing a site calibration is to do a site attenuation test. There are however battery operated devices such as comb generators and comparison noise emitters that provide signals across the frequency range 30 - 1000 MHz. They can be used for site comparisons and /or periodic site checks between site attenuation measurements. A comb generator produces narrowband signals at given frequency steps (typically 5 MHz) and a comparison noise emitter (CNE) produces a broadband signal.
As for suppliers of these products I suggest the usual EMC companies...If you need more information I can probably get the name of a manufacturere for you. The University of York, England developed a CNE but I do not know if it is available through them. Hope this helps Mark Briggs At 09:13 PM 8/12/96 EDT, you wrote: >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 ? > > >
