EVLA Observing Band Checkouts

• P Band Status: Testing
  • Antennas with no P-band Rx: 7, 16, 22, 24 (no feed); 1, 4, 5 Rxs are not working.
• L Band Status: Ready
  • Frequency labeling (ECDATA-9, ECDATA-10): Ok
  • Sky orientation (ECDATA-10): Ok
  • Gain stability (ECDATA-23): Ok; some bandpass phase evolution seen; follow-up on really blank sky.
  • Tuning: updated.
  • Antennas with no L-band: EA06, EA20, EA26
  • Integrating down (ECDATA-23):
    • Averaging in time is ok; averaging between subbands has problems.
    • L band (really) blank field (ECDATA-40)
  • L band, HI checkout (ECDATA-47)

• S Band Status: Ready.
  • S band edge tests (similar result to C for tunings near 4 GHz; potentially some satellite downlink RFI; review of aliasing/out-of-band intermodulation is under review (Rick)
  • Frequency labeling (ECDATA-24): Ok
  • Sky orientation (ECDATA-18): Ok
  • Gain stability (ECDATA-24): Ok (no jumps seen)
  • Tuning (ECDATA-24): Reviewing default frequency based on birdies; recommendation to shift to multiple of 128 MHz .
    • RFI: 3072 MHz, 3200 MHz (ECDATA-24)
      • Follow-up on birdies: ECDATA-39
  • Integrating down (ECDATA-18): Ok
  • Antennas with S band: EA08, EA09, EA15, EA22, EA24, EA27, EA28

• C Status: Ready
  • Frequency labeling: Ok. Will get more information from Eric's analysis.
  • Sky orientation (ECDATA-35): Ok
  • Gain stability (ECDATA-35): Ok
  • Tuning: Low frequency tuning issue; stepped up for last AH1004.
  • Integrating down (ECDATA-25):
  • Antennas with no C-band: EA13

• X Band Status: Ready
  • Frequency labeling : ECDATA-17): Ok
  • Sky orientation (ECDATA-17): Ok
  • Gain stability (ECDATA-26): Ok (no jumps)
  • Tuning: No issues
  • Integrating down (ECDATA-26): Ok
  • Antennas
  • RFI: none seen

• K Band Status: Ready
  • Frequency labeling (ECDATA-19): Ok
  • Sky orientation (ECDATA-19): Ok
  • Gain stability (ECDATA-19): Ok
  • Integrating down (ECDATA-19): Ok
  • Antennas: EA10, EA12
  • RFI: none seen

• Ka Band Status: Ready.
  • Frequency labeling (ECDATA-114): Rick
  • Sky orientation (ECDATA-114): Rick
  • Gain stability (ECDATA-114): Rick
  • Integrating down (ECDATA-114): Rick
  • *Antennas with no Rx: *
  • RFI:

• Q Band Status: Ready.
  • Need Q band suite of tests.
  • Antennas with no Q-band: EA10, EA12, EA17