High-performance tracking and acquisition

The Model 253 and 250 tracking receivers provide a high-quality, cost-effective solution for converting the satellite beacon from RF or IF to a DC voltage tracking signal.

The 253 is an integrated, rack-mounted (2RU) receiver chassis. The 250 is a receiver card set integral to the Model 133 ACU chassis, available with an optional block down converter.

  • Internally synthesized with 1.0 kHz tuning steps
  • Automatic phase-lock loop (PLL) with Quick-LockTM acquisition (<1 sec) and Sideband rejection
  • Tracking voltage output: 0-10VDC and -5 to +5 VDC
  • Three predetection bandwidths: 250, 4.0, or 2.5 kHz
  • Dynamic range: 45 dB Std. and 90 dB Optional
  • CW, PM, or BPSK (optional) modulation accommodated
  • Monopulse capability (Model 253)
  • Doppler compensation (extended range optional)

 

Product Details

Model 253

  • Low-profile, rack-mount chassis
  • L to Ka single and multi-band configurations available
  • Front panel LCD display and keypad
  • Remote controllable via RS-232/422

Model 250

  • Economical two-piece receiver card set
  • 950 -1750 MHz input from LNB or 250 BDC unit
  • 75Ω type F or 50Ω type SMA input available

Specifications

Model 253

Band

Input

Frequency - Ghz

VSWR

Image Rejection

Stability

L 75Ω, type F .95 - 1.75 2 : 1 40 dB ± 5kHz
L 50Ω, type N .95 - 1.75 2 : 1 40 dB ± 5kHz
S 50Ω, type N 2.0 - 2.8 15 : 1 40 dB ± 25kHz
C 50Ω, type N 3.4 - 4.2 15 : 1 40 dB ± 15kHz
C Full 50Ω, type N 3.4 - 4.8 15 : 1 40 dB ± 15kHz
C High 50Ω, type N 4.0 - 4.8 15 : 1 40 dB ± 15kHz
X 50Ω, type N 7.25 - 7.75 15 : 1 40 dB ± 25kHz
Ku 50Ω, type N 10.7 - 11.5 15 : 1 40 dB ± 25kHz
Ku 50Ω, type N 10.7 - 12.25 15 : 1 40 dB ± 25kHz
Ku Full 50Ω, type N 10.7 - 13.0 15 : 1 40 dB ± 30kHz
Ku 50Ω, type N 10.9 - 11.7 15 : 1 40 dB ± 25kHz
Ku 50Ω, type N 11.45 - 12.25 15 : 1 40 dB ± 30kHz
Ku 50Ω, type N 11.7 - 12.5 15 : 1 40 dB ± 25kHz
Ku 50Ω, type N 12.2 - 13.0 15 : 1 40 dB ± 30kHz
Ka 50Ω, SMA 17.00 - 17.8 15 : 1 40 dB ± 50kHz
Ka 50Ω, SMA 18.10 - 18.9 15 : 1 40 dB ± 50kHz
Ka 50Ω, SMA 19.20 - 20.0 15 : 1 40 dB ± 50kHz
Ka 50Ω, SMA 20.20 - 21.0 15 : 1 40 dB ± 50kHz

 

Physical Data

253

250

250 BDC

Dimensions (in.) 3.5H 19W 22D IBM AT bus (x2) 1.75H 19W 6D
Weight (shipping) 23.5 Lbs (28 Lbs.) 2.5 Lbs. (7 Lbs.) 4.0 Lbs. (10 Lbs.)
Power 90-264 VAC, 47-63Hz 200VA N/A 90-264 VAC, 47-63Hz, 60VA
Temperature, operating 0° to 50° C 0° to 50° C 0° to 50° C
Temperature, storage -40° to 50° C -40° to 50° C -40° to 50° C
Humidity 0 to 95% 0 to 95% 0 to 95%

 

RF Specifications

Input Total Power Level -10 dBm max
Input Beacon Level Range -55 to -100 dBm
Beacon Tuning Step Size 1.0 kHz
Predetection Bandwidth 2.5 kHz, 4.0 kHz, 280 kHz
Signal Strength Linearity 20% min
C/No for Narrowband Acquisition 40 dB-Hz min
C/No for Wideband Operation 61 db-Hz min
Sweep Width ± 40 to ± 150 kHz
Acquisition Time <1 sec for ± 100 kHz Sweepwidth