9cm transverter

9cm Transverter

The above shows my 9cm transverter. It gives about 5W in 3400MHz. The boxes are rather old but still work fine after adjustment of all currents. The PA has 46dB gain which makes a attenuator necessary. 

transverter component side

This photo shows the assembly side with the RF transistors. The other side carries the filter cups aß Well as some other larger components.

transverter top side

The small box ist the oscillator/multiplier and the other one the transverter.

OCXO G8ACE phasenoise & startup

G8ACE OCXO at 103.5MHz

103.5MHz oscillator briefly measured with R&S FSP30..


I think above 1kHz the PN figure is determined by the FSP oscillator.
Does someone have a better measurement of such an oscillator, especially above 1kHz up to 200kHz ? Unfortunately i do not have a better PN testset.

The following picture shows the cold-start behavior of the OCXO from room temperature to 60 degree celcius. The X-axis shows time in seconds and the y-axis frequency in Hz.

G8ACE OCXO Startup