Quick Details
Model Number: GY561
Type: Frequency counter
Color: Camouflage
Display Type: Analog and Digital
Operating Temperature: -10 to +70
Measuring Range: 1Mhz~2400Mhz
Product Detail
Spec.&Feature:
  -- Multi-Function LCD Display
  -- frequency range: 1Mhz---2400Mhz.
  -- RF power range: 0.1W---50W.
  -- impedance input: 50 Ohm.
  -- accuracy: +/- 10% when the frequency is 140Mhz~170Mhz,400Mhz~470Mhz.
  -- response time: 0.2 s
  -- working tempreture: -0 ~ +40
  -- battery: 1.5V(AAA) x 3.
  -- current consumption: about 100mA.
  -- auto power off time: 80S.
  -- attachment: converting connector,antenna,user manual.
display screen:
  -- LCM display,the minimum level of frequency is 0.001Mhz(1Khz),the minimum level of power is 0.1W.
frequency and RF power range:
  -- the said device will show “00.0W” when the frequency is more than 500Mhz.And the said device will not be accurate when the frequency is under 1Mhz.
adjustment and calibration:
  -- You will see 2 adjusters when opening the upper shell.One is located on the down and left side for the frequency adjustment,you can adjust it when you have the more professional devices. The other one is locate on the down and middle side for the RF power adjustment,and it is set well after producing(5.000V),do not adjust it freely.(The RF power calibration please suject to the “User Mode”).