Updated 08 February 2018
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The Fibo antennas was developed by Telenor Research and Development (at that time called Norwegian Telecom Research) in co-operation with Fibo-Støp.
There is an article about "gregorian" offsetantennas in Telektronikk 4 1992
More Telektronikk issues can be found on http://www.telenor.com/telektronikk
Fibo 55cm without LNB
| Antenna Diameter | 55x60cm |
| Frequency range | 10,95-12,75GHz |
| Antenna Gain@11.7GHz | 35,6dB |
| Antenna Offset | 23.5 degrees (theoretical) |
| VSWR | <=-1,2 |
| Cross polarisation isolation | <=-35dB |
| Antenna Efficiency | 80% (based on 55cm apperature diameter) 73.3%(based on real surface) See Offset antenna efficiency calculator |
| Antenna Beamwidth@11.7GHz | N/A - 3,3 degrees theoretical |
| Antenna Offset | N/A |
| Waveguide Flange | C120 |
| Reflector type | Gregorian offset - two reflectors |
| Antenna Material | Aluminium |
| Antenna surface | Epoxy |
| Polarmount | +/-60 degrees |
| Weight | 8 kg |
| Elevation range | 30-75 degrees |
| Declination range | 30-75 degrees |
| Wind speed limit | 45 m/s |
| Suited LNBs | Invacom C120 Single,Twin,Quad etc. |
| LNBs that does NOT fit | Digistar TC-22,Digistar SC-1,MTI AP8-TW,MTI AP82-TW,MTI-AP84-TW |
Fibo 90cm subreflector with Invacom SNF-031 LNB
Polarmount for 90cm antenna Drawings&Pictures
| Antenna Diameter | 90x99cm |
| Frequency range | 10,75-12,75GHz |
| Antenna Gain@11.7GHz | 40,0dB |
| Antenna Offset | 24.6 degrees (theoretical) |
| VSWR | <=-1,2 |
| Cross polarisation isolation | <=-35dB |
| Antenna Efficiency | 82% (based on 90cm apprature diameter) 74.8% (based on real surface) See See Offset antenna efficiency calculator |
| Antenna Beamwidth@11.7GHz | N/A - 2,0 degrees theoretical |
| Antenna Offset | 15 degrees |
| Waveguide Flange | C120 |
| Reflector type | Gregorian offset - two reflectors |
| Antenna Material | Aluminium |
| Antenna surface | Epoxy |
| Polarmount | +/-60 degrees |
| Weight | 11 kg |
| Elevation range | 30-75 degrees |
| Declination range | 30-75 degrees |
| Wind speed limit | 45 m/s |
| Pipe for Polarmount | 76mm X 5mm |
| Bolts on reflector | M8 |
| Distance between bolts | 60x116 |
| Suited LNBs | Invacom C120 Single,Twin,Quad etc., MTI AP8-TW,Digistar SC-1 |
| LNBs that does NOT fit | Digistar TC-22,MTI AP82-TW,MTI-AP84-TW |
Fibo 120cm with north/south tracking actuator
Fibo 120cm subreflector with MTI AP8-TW LNB
(MTI Twin and Digistar Twin does not fit on this antenna)
Fibo HH Jaeger style polarmount welded onto an old Channel Master polarmount in order to obtain north/south inclined orbit tracking with dedicated actuator
| Antenna Diameter | 120x135cm |
| Frequency range | 10,95-14,5GHz |
| Antenna Gain@11.7GHz | 42,4dB |
| Antenna Offset | 27.3 degrees (theoretical) |
| VSWR | <=-1,2 |
| Cross polarisation isolation | <=-35dB |
| Antenna Efficiency | 80%(based on 120cm apperature diamemter) 71.5% (based on real surface) See Offset antenna efficiency calculator |
| Antenna Beamwidth@11.7GHz | 1,45 degrees - 1,5 degrees theoretical |
| Antenna Offset | 18 degrees |
| Waveguide Flange | C120 |
| Reflector type | Gregorian offset - two reflectors |
| Antenna Material | Aluminium |
| Antenna surface & feedsupport | Crom & epoxy |
| Polarmount | +/-90 degrees |
| Weight | 11 kg |
| Elevation range | 30-75 degrees |
| Declination range | 30-75 degrees |
| Wind speed limit | |
| Pipe for Polarmount/Fixed mount | 76mm X 5mm |
| Bolts on reflector | M8 |
| Distance between bolts | 205x170 |
| Suited LNBs | Invacom C120 Single,Twin,Quad etc., MTI AP8-TW,Digistar SC-1 |
| LNBs that does NOT fit | Digistar TC-22,MTI AP82-TW,MTI-AP84-TW |
120cm antenna assembly
Polarmount for 120cm antenna (old version - later changed to the far better Jaeger style H-H mount)
Fixed mount for 120cm antenna
Pulse circuit for
polarmountmotors.
(There are
two different pulse circuits depending on how old the motor is)
Spec optical switch H22B1 : If you
dont have the orginal Fibo polarmount for your 90cm or 120cm Fibo I recommend H-H mounts from Jaeger.
Some of this polarmounts even supports actuator for tracking. It should not be to difficult
fitting a
Fibo on this mounts. The best C120 LNB I have
tested on the Fibo is the MTI
AP8-TW with a claimed nf=0.4dB (typ) compared with Invacom SNF-031 0.3dB (typ)
and Digistar/Digiality SC-1 0.7dB (typ) on Astra 2D. MTI LNB's does not fit on the Fibo55cm but the Invacom SNF-031 fits wery well onto the 55cm
MTI has stopped production of AP8-TW but there is a replacement LNB called MTI AP8-STW I get a lot of mail about
spare parts and where to buy theese antennas. Unfortunatly the
company that manufactured this antennas (Fibo-Støp) does not exist and have not since
the mid 90's. It is almost impossible to get spareparts now. Satmueller.de sell Fibo antenna under the Master Focus name. Satmueller also have spare parts. 20©18 Jens T. Satre
www.fairchildsemi.com/ds/H2/H22B1.pdf
