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Author Topic: OK0EPB on 7039,4 kHz  (Read 3360 times)

Offline ulx2

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OK0EPB on 7039,4 kHz
« on: November 24, 2012, 0005 UTC »
Licensed (sorry for the off topic) but interesting "standard time-beacon" station, driven by pendulum situated in the vacuum chamber, was established in Czech Republic.

The pendulum with a rod made of fused quartz is oscillating with a frequency of 0,5 Hz. Position of the pendulum is controlling by the IR sensor, signals from which are driving the CW transmitter on the frequency of 7039,4 kHz with output power of 10 W. The maximum difference of time signal is held in the tolerance of 0,1 sec.

For more information: http://ok0epb.nagano.cz

These signals are good audible here in Kiev at local evening time (e.g. 1600 - 1800 UTC), but often with a QRM from near frequencies. Narrow filter is necessary for a comfortable reception.
« Last Edit: November 24, 2012, 0017 UTC by ulx2 »
LOC: Kyiv, Ukraine
RX1: Degen DE-1103 portable
RX2: Xhdata D-808 portable
RX3: Airspy Mini SDR + Spyverter
ANT1: 80 mb dipole
ANT2: Long wire (10 meters)
ANT3: Homemade M0AYF active loop
ACC: Homemade passive preselector & phasing device


Offline skeezix

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Re: OK0EPB on 7039,4 kHz
« Reply #1 on: November 24, 2012, 0027 UTC »
That's pretty cool.

Tried listening for it here @ 0020Z, but nothing at all.  Granted, 10W from there to here is going to be a very big challenge.
Minneapolis, MN


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