From top to bottom the picture shows the pre-amplifier mounted in a closed box. A mixer current meter is visible and the IF is taken out via the BNC connector. The point contact diode in its circular housing is next. This appears to be a piece of commercial surplus that has been re-engineered for amateur use. Finally the self calibrating wavemeter is seen.
The wavemeter can be seen to be clamped to the waveguide 16 by a diagonal retaining bar.
The pre-amplifier box is labelled, and the IF frequency is 70 MHz. The comment from G4NNS is that the noise figure is 'lots'.
See also 70 MHz IF Strip.
This exhibit was last updated on August 19, 2014.