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Welcome
to the Home Page of
G8ACE | |||||
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76GHz
Link to G8BKE Website & 76GHz
report 47
GHz
24 GHz10
GHz 5.7
GHz 3.4
GHz My 3.4 GHz
portable
2.3
GHz 1.3
GHz Investigations |
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The G8ACE
MKII OCXO
This OCXO using a
5th overtone crystal has been developed to provide improved
frequency stability when operating on all the microwave bands.
It has varicap frequency control
for fine preset adjustment or for connection to a PLL such as the
Reflock CT1DMK design. A kit is
available for this unit, more
information. | |||
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An Ovened
Reference Oscillator
This
module pictured to the right uses the same oven circuit as the MKII OCXO
but is for use at 5 or 10 MHz or any special similar frequency. Using a fundamental mode crystal
the circuit incorporates drive level AGC and provides a 0dbm output
signal into 50
ohms. The
circuit was designed by G8CPJ and implemented here using mainly surface
mount components and integrated into the existing G8ACE oven design. The Oscillator is varicap controlled for phase locking to GPS or here at G8ACE to the BBC Radio4 transmission on 198Khz. The 10 MHz signal is distributed to lock test equipment in the Shack and also the 10 GHz home station, more information. |
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A x24 multiplier for use with the MKII OCXO Using four
semiconductors the output power of the module shown left is 40mw from 1mW
drive at the band centre. The
Output Filter is located at the top of the PCB. The on board 9v regulator on the
underside. Module size is 110 x 55 x
30mm. Kit
details to follow here
shortly. | ||||
