EXTRA-4 NEW

70 MHz PREAMPLIFIER
By: HA8ET

 

 Technical data:

 Frequency range:…..……  69 MHz….71,8 MHz  (B=-1dB)

 Input/Output impedance:  50 Ω

 Gain:………….………… 16 - 24 dB (adjustable)

 Noise Figure………..……<0,6 dB (typ. 0,5)

 3dB Bandwidth:………..  4,6 MHz

 IP3………….……………>24 dBm

 Broadcast rejection:……..>60 dB @ 100 MHz

 Unconditionally stable

 Moderate sensitivity to ESD

 Supply voltage:……...…  +12…15V/152mA

 Powered through antenna feed line, or separately

 +40 dBm IP3 GaAs FET (ATF-53189)

 Connectors:…………...... BNC or N 

 Dimensions (Box):…….. 74 x 37 x 30 mm

 

CIRCUIT DIAGRAM (SCH)

PART LIST

 

N MALE / FEMALE

 

 

 

PRETUNED PCB

 

 

© HA8ET 2016