SM7LCB - 10 GHz station

Last updated 18 December 2010.


Hi, and welcome to my page regarding my 10 GHz (3 cm) transverter. The content is:

- Combined 5/10 GHz
- 10 GHz - 0.5 Watt
10 GHz - 5 Watt

Combined 5/10 GHz

This transverter was from the beginning built for both 5 and 10 GHz in same box.
You can read more about it on my 5 GHz page. The photo below show both transverters and the antenna switching.



10 GHz - 0.5 Watt

Well it didn't when well with the combined transverter so I decided to add more power and only have 10 Ghz in the unit.



The following functions have each block in the transverter:
  • IF is the IF switch for 144 MHz IF used in my transverter system.
    I use this because all my transverters is cascade connected so I only have one IF cable up to the antennas.
    This IF switch also have the RX/TX switching between the RX and TX path of the transverter.
  • TRANSVERTER is DB6NT with external LO input.
  • PA this is a LA6LCA with 0.5 Watt output at 1 mW input therefore an attenuator between transverter and PA..
  • ANT-SW is a nice SMA relay.
  • XO is a Ericsson 10 MHz locked X-oscillator modified for 96 MHz.
  • PIC is home made controller of the transverter.
    It use ICOM bus connection to the controller of the receiver system.
    It control the IF-switch and supervision of output power, temperature etc.
    TX-control is via DC level on the IF coax (+DC at TX).
  • DC block is handling DC-switching controlled by the PIC for PA/PREAMP.

The transverter is build in an Ericsson (filter/preamp) unit for mast mounting.

Top deck is transverter, antenna relay and D-SUb for interconnection.

Low deck is to left 12 to 24 VDC converter (inside box), DC distribution board (with P-MOSFET), PIC microcontroller and under the transverter is a R&S 10 MHz oscillator.
Same as above but here you also see the 0.5 Watt PA.
Smoke test of the transverter with a wire antenna.
The transverter mounter inside the box with all wires in place.
See the attenuator at transverter TX output.
Testing of the transverter together with the antenna in Stockholm.

10 GHz - 5 Watt

Okay 0.5 Watt is more then 0.2 Watt but I notice that more power is needed on 10 GHz for good DX.
So I invested in a new 5 Watt power amplifier. Now I see that I should have gone for at least 10 Watt! Maybe next step?
I also added a preamp and thats good.



The following functions have each block in the transverter:
  • IF is the IF switch for 144 MHz IF used in my transverter system.
    I use this because all my transverters is cascade connected so I only have one IF cable up to the antennas.
    This IF switch also have the RX/TX switching between the RX and TX path of the transverter.
  • TRANSVERTER is DB6NT with external LO input.
  • PA is a DB6NT with 5 Watt output at 200 mW input.
  • PREAMP is DB6NT.
  • ANT-SW is a nice SMA relay.
  • XO is a Ericsson 10 MHz locked X-oscillator modified for 96 MHz.
  • PIC is home made controller of the transverter.
    It use ICOM bus connection to the controller of the receiver system.
    It control the IF-switch and supervision of output power, temperature etc.
    TX-control is via DC level on the IF coax (+DC at TX).
  • DC block is handling DC-switching controlled by the PIC for PA/PREAMP.

Here is the new block which shall replace the previous 0.5 Watt amplifier. from left the interconnection (D-SUB), antenna connector, antenna relay and finally the PA (below) and the PREAMP (top). the brown board is temperature sensor for the PA.
Same as above but from the other side.
The module install into the transverter box.
The module install into the transverter box.
In the spring of 2005 the transverter was QRV from Íland.

If you want any more information on this page, send an email to me. For address see main page.



SM7LCB
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