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Recent content by jwga14

  1. J

    testing device with 1 K load

    I am testing a satellite receiver , 2335 and 1780 GHz. The output freq is 70 MHz, but I am testing the demodulated AM signal with AGC. It is input in dBm and output in vdc. 1654304337 Thanks, can you send me an example of a resistive passive probe?
  2. J

    testing device with 1 K load

    Hi all, I would like to conduct a bench test by injecting RF sin wave with 1.5- 2.6 GHz signal with different dBm (-110 to 20 dBm). The test required to measure the output using 1 K load. I am not familiar how to integrate the 1 K load and from where I can get it, and measure the output (to test...
  3. J

    Satellite 3dB, 20, 40 and 60 dB bandwidth offset

    Hi all, I would like to calculate the Satellite 3dB, 20, 40 and 60 dB bandwidth offset Given the Tx/ Rx frequencies, the antenna diameter without curve Can you help Thanks
  4. J

    General knowledge

    Thanks a lot Barry
  5. J

    General knowledge

    Thanks Barry, Why there are two ranges ? first one is Min - Max and the second one is Nominal range ? Why they did not mention the Min - Max range ? what does it mean "Nominal" Thanks
  6. J

    General knowledge

    Hi All, I would like to understand what does it mean the following : Gain Flatness at full band shall be C1.0 dB ? what does it mean C 1.0 ? dB --- Maximum band EIRP is -14 dBW worst case. Nominal operating at -7 dBW ? What does it mean Nominal operating at – 7 dBW? band EIRP is Minimum 54 dBW...
  7. J

    UAQPSK

    Hi , I would like to know what exactly UAQPSK - I am familiar with phase shift keying. Thanks and regards,
  8. J

    RF input

    I have another question / expiation Input overdrive : 3 dB ? meaning AM/PM conversion @ rated P1 dB max limit is 3.5 o/dB? AM/PM conversion @ rated P1 dB -3 dB max limit is 1.0 o/dB? Thanks
  9. J

    RF input

    Thanks , It was noted in the testing sheet gain flatness limit is C 1.0 dB. VR
  10. J

    RF input

    Hi, I have another question concerning the amplifier gain flatness limit. What does it mean gain flatness limit is C 1.0 dB?
  11. J

    RF input

    Thanks G4BCH I am new for the following abbreviations what does it mean exactly Spurious(@ rated P1dB) is -70dBc Harmonics @ rated P1dB-3dB is -40dBc Linear group delay Parabolic delay and Ripple group delay
  12. J

    RF input

    When connecting to amlpifier input there is a - 10 dBc coupled sample RF input (why). When connecting to amplifier output there is a -40 dBc coupled sample RF output (why).
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