CPI SAT Model 21.0M Satellite Communications Earth Station Antenna
X-band low PIM reflector & feed configurations available
21 Meter Earth Station
This product has reached end of life and is no longer available. Please contact us for information on a comparable replacement.
The CPI SAT (formerly GD Satcom Technologies & Prodelin) 21.0M Cassegrain Antenna delivers transmit and receive operation over frequencies ranging from 1.5 to 8.4 GHz, It's galvanized steel elevation over azimuth pedestal will survive wind speed up to 125 Mph in any position. The General Dynamics SATCOM Technologies 21.0-meter antenna delivers exceptional performance for transmit/ receive and receive only applications in L through X-band frequencies.
Precision Construction
This antenna offers a reflector design that incorporates precision-formed panels, truss radials and hub assembly. It features an innovative Cassegrain feed and subreflector design which results in high gain, low noise temperature, high antenna efficiency and excellent rejection of noise and microwave interference. A large center hub provides spacious accommodation for equipment mounting. The reflector is supported by a galvanized elevation over azimuth kingpost pedestal that provides the required stiffness for pointing and tracking accuracy. The pedestals are designed for full orbital arc coverage and are readily adaptable to ground or rooftop installations.
Regulatory Compliance
The electrical performance is compliant with FCC and ITU-RS-580 sidelobe specifications and Intelsat (A) and Eutelsat requirements.
|
Frequency (GHz) |
3.625 - |
5.850 - |
3.625 - |
5.850 - |
3.400 - |
5.850 - |
3.400 - |
5.850 - |
7.250 - |
7.900 - |
|
|
4.200 |
6.425 |
4.200 |
6.425 |
4.200 |
6.725 |
4.200 |
6.650 |
7.750 |
8.400 |
|
Antenna Gain, Midband dBi (2) |
57.60 |
61.00 |
57.70 |
61.00 |
57.70 |
61.10 |
57.80 |
61.00 |
62.70 |
63.40 |
|
VSWR Pattern Beamwidth (2) |
1.25:1 |
1.25:1 |
1.30:1 |
1.30:1 |
1.30:1 |
1.30:1 |
1.33:1 |
1.30:1 |
1.30:1 |
1.30:1 |
|
-3 dB, at midband |
0.22° |
0.15° |
0.22° |
0.15° |
0.22° |
0.15° |
0.22° |
0.15° |
0.12° |
0.11° |
|
-15 dB, at midband Antenna Noise Temperature |
0.46° |
0.32° |
0.46° |
0.32° |
0.46° |
0.32° |
0.46° |
0.32° |
0.25° |
0.23° |
|
5° Elevation |
55 K |
|
58 K |
|
58 K |
|
66 K |
|
80 K |
|
|
10° Elevation |
46 K |
|
49 K |
|
48 K |
|
57 K |
|
69 K |
|
|
20° Elevation |
40 K |
|
44 K |
|
43 K |
|
51 K |
|
64 K |
|
|
40° Elevation Typical G/T (dB/K) (3) |
38 K |
|
42 K |
|
41 K |
|
49 K |
|
62 K |
|
|
Midband, 35 K LNA |
38.8 |
|
38.4 |
|
38.8 |
|
38.2 |
|
42.3 (4 |
5 K LNA) |
|
Axial Ratio |
0.50 dB |
0.50 dB |
0.50 dB |
0.50 dB |
|
|
0.50 dB |
0.50 dB |
0.50 dB |
0.50 dB |
|
Power Handling (total) Cross Polarization Isolation |
|
10 kW CW |
|
10 kW CW |
|
10 kW CW |
|
10 kW CW |
|
5 kW CW |
|
On Axis (dB) |
30.7 |
30.7 |
30.7/35.0 |
30.7/35.0 |
35.0 |
35.0 |
30.7/35.0 |
30.7/35.0 |
30.8 |
30.8 |
|
Within 1.0 dB BW (dB) Port to Port Isolation |
30.7 |
30.7 |
30.7/30.0 |
30.7/30.0 |
30.0 |
30.0 |
30.7/30.0 |
30.7/30.0 |
30.8 |
30.8 |
|
Rx/Tx (Rx frequency) |
0 dB |
-30 dB |
0 dB |
-30 dB |
0 dB |
-70 dB |
0 dB |
-30 dB |
0 dB |
-110 dB |
|
Tx/Rx (Tx frequency) |
-85 dB |
0 dB |
-30 dB |
0 dB |
-85 dB |
0 dB |
-30 dB |
0 dB |
-110 dB |
0 dB |
|
Rx/Rx, Tx/Tx (CP mode) |
20 dB |
23 dB |
21 dB |
23 dB |
|
|
17 dB |
17 dB |
17dB |
17dB |
|
Rx/Rx, Tx/Tx (LP mode) Sidelobe Performance |
|
Meets |
30 dB FCC 25.209, I |
30 dB ntelsat or ITU-RS-580 |
30dB |
30 dB |
30 dB |
30 dB Meets ITU-RS-580 |
|
|
|
RF Specification |
975- |
1085 |
975- |
1569 |
975- |
2888 |
975- |
2033 |
975- |
2195 |
Designed for 1.5 to 8.4 GHz operation, meeting FCC and ITU-RS-580 requirements
