YO4HFU |
Automatic Noise Figure Meter |
26.04.2013
Not recommended design, only for reference.
Service Manual
Ailtech 7310/7320 System Noise Monitors
Ailtech 7310 Main Board - tnx for help: LA3PNA & M0XPA
Schematic Diagram:
Preamplifier & π Attenuator
Frequency Converter
Schematic Diagram after my modification: >BMP< (better resolution) and >PDF<
ENR Switch
+28V Power Supply
PCB
Over Range Indicator
Video Board
RF Board
Converter (Mixer) Board
Preamplifier 29MHz
Oscillator 285Hz
+28V, +/-12V Power Supply
Photos
Inside Noise Figure Meter
RF Section
Panel Switch
Early Version PCB
yo4hfu@2010-2021