DJ8WX
LF sites
GPS stabilised 1pps and 10 MHz
generator
I downloaded the
software -Clicklock- from a site of ZL1BPU. It is a LF propagation
measurement tool.
The -click-
needed to use this program must be a high stabilised 1pps.
Searching for a
sufficient generator to build I found a site of G3RUH which shows the schematic
of an interface for a GPS stabilised 10MHz oscillator. The RS232 driver is a
MAX 233 CPP with the TTL 1pps at pin 18. I bought the PCB, the VCXO and the GPS
receiver from James/G3RUH; the other parts from a local trader.
The Generator:
PS. The color of the
picture: The spotlight radiated yellow.
Clicklock
screenshots
1.Measuring 198kHz of
BBC (known as a frequency standard). As one can see, it (the 1pps generator
and the 1pps interface in combination with a OVXO controlled FT1000) works:
2. Registration of a GPS disciplined carrier on 137700.000Hz, the frequency of a test transmission of G4JNT/Andy. Output power: 1W. Distance: 806km. Direction: 250dgr.:
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