A battery powered broadband signal source producing a stable comb of frequencies over the above quoted frequency range. Referring to the spectral graph below the end user can select either an 80MHz or 100MHz comb separation. It is battery powered avoiding cable layout interference. It comes as shown in a bespoke box which includes a charger with battery condition lights. Output level 60dB/uV/m minimum in both V & H polarisation measured at 3m with a horn antenna & a spectrum analyzer. Battery duration is 6-7 Hrs. Diameter: 76mm. Height: 92mm.Weight:550gm.