Radio amplifiers
Wideband UHF Amplifier - antenna tv amplifier circuit
This UHF wideband amplifier ( Ultra High Frequency amplifier ) has a total gain of 10 to 15 dB in the 400 - 850 MHz domain frequency so it can be used where the tv signal is weak.
For this UHF antenna tv amplifier to work correctly you need to cut the components pins as short [...]
VN66AF 27MHz CB amplifier
The 10 meters 27MHz CW radio amplifier is equiped with VN66AF transistor produced by Siliconix wich has some advantages: its cheap, great dielectric insulation and high gain. Here we use VN66AF as an rf amplifier for 10m band (26 … 30 MHz ).
With this 27MHz rf amplifier, small transmitters ~ 200mW, can be transformed in [...]
Rf 100W BLY94 power amplifier
Components:
Active components: BLY94
Coaxial cable length : K x Lambda / 4, where K = 0.66 for 50 ohm cable and K = 0.8 for 75 ohm cable.
* L1 = L6 = 2 turns / 1.5mm / 14mm
* L2 = L7 = 8turns/0.8mm/4mm/ferite or HF
* L3 = L8 = 4 turns / 2mm / 14mm [...]
