[Wideband frequency tester] Zhengzhou where to sell? The specific location of the company where after-sales? Sales: Zhujing 18939564786 Description: Sweep range: 1 ~ 1000MHz (50Ω) 5 ~ 1000MHz (75Ω) sweep mode: Full scan (Panorama), narrow sweep I, narrow sweeping II, single-frequency (point frequency) frequency Display: LED digital auxiliary error of ± 1% F ± 10 MHz output level: +13 dBm/50Ω 116dBuV/75Ω output flatness: Shi-0.3dB better than the output attenuation: 10dB × 7 and 1 dB 10 stepper electric failure. output harmonic content: less than-30dB mark: pulse-labeled 100, 10 sweep the movable marker-assisted displayed FSB standard single-channel linear display the sensitivity 1mV/DTV level reference line: two in arbitrarily set the vertical direction of the screen electronic scale line Display: 7-inch long afterglow magnetic deflection CRT Dimensions: 400 × 190 × 380 Weight: about 9Kg Zhengzhou Hanson Radio and Television Communications Equipment Co., Ltd. Tel :0371 -53,769,167 Sales: Zhujing 18939564786 QQ: 1006519081 Address: Zhengzhou City, Zijin Road and East Main Street Interchange 300 meters west