Cambridge "CBNL VS2" - 10.5GHz transverter |
Specifications of Cambridge Broadband Networks Limited CBNL-VS2 (VectaStar 2) 10.5GHz transverter:
Original frequency range: Tx=10.15-10.3GHz; Rx=10.5-10.65GHz
TX output power: <1W
TRX board RX gain: ~15dB
TX 1st LO (8GHz): < -35dBc *(due to internal 10GHz BPF)
TX spurious +/- 1MHz (2nd LO fractional PLL): < -65dBc
Original IF board replaced by custom IF:
- 144/432MHz, 16 possible frequency ranges of 3cm band (432MHz not yet implemented, new firmware required)
- OCXO reference
- Low phase noise 125MHz VCXO reference PLL
- Coaxial relay driver
- TX output monitor
- RF VOX
- High efficiency power SMPS
- Low consumption for portable use
- New internal power supply module and TRX board modifications to reduce RX/TX current
Enclosure: Hammond 1444-14 / 1434-14
CBNL VS2 10GHz schematic v.1 (TRX PCB)
CBNL VS2 ODU specifications
CBNL IF v1.1 schematic 
*(TX IF attenuator increased to 20dB)
CBNL IF v1 PCB ( by request)
CBNL PSU v1 schematic
CBNL PSU v1 PCB ( by request)
LED Bargraph firmware v1 - 1.95V full scale, default internal clock 1MHz
PLL Controller firmware v2 - 10368-10400MHz, IF 144-146MHz, default internal clock 1MHz *(1st LO Integer mode 4GHz, 2nd LO fractional 2.224-2.254GHz)
CBNL TRX board modification v1 - necessary to match with IF board
Milling Chassis: Photo 1, Photo 2
Lide milling to avoid microstrip coupling - Position 1, Position 2
Transverter Internal View
CBNL made by Tomasz - SQ5EBO
First QSO using CBNL VS2, QRB 194km, strong signals: Youtube YO3GNF, YO3FWL
LINKS:
10GHz Compact Transverter
SQ9MTS blog
ON6LL Webpage