Hf Preamplifier Circuit


Posted on Jan 5, 2013

This HF SW receiver preamplifier is comprised of a broadband toroidal transformer (LI-a and Ll-b), a complex LC network (comprised of a 1600- kHz, high-pass filter and a 32-MHz, low-pass filter), L2 and L3 (26 turns of #26 enameled wire wound on an Amidon Associates T-50-2, red, toroidal core), a pair of resistive attenuators (ATTN1 and ATTN2), and of course, the MAR-x device. External power for the preamp can be 9 to 12 Vdc.


Hf Preamplifier Circuit
Click here to download the full size of the above Circuit.

Rl can be increased in value for liigher voltages.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Tin Can Waveguide WiFi Antenna
LED Color Fade Effect circuit diagram
Mobile cellphone charger with battery
micro stepper
garden lighting
8x8 dotmatrix scrolling led display
Bicycle Back Safety Light Circuit Schematic
elp needed making changes circuit
Vacuum Tube Direct Interface
Capacitive Discharge Magnetic Pulser
Neon high-voltage power supply circuit diagram



Top