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<br><br><b> Ticket Information: </b>
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View this ticket online: <a href="https://help.nrao.edu/agent/#app.tickets,t:32924" title="(#)" style="color: #0065A3; font-family: Helvetica, Arial, sans-serif; font-weight: normal; padding: 0; margin: 0; text-align: left; line-height: 1.3; text-decoration: underline;">https://help.nrao.edu/agent/#app.tickets,t:32924</a>
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Alexander Pushkarev <pushkarev.alexander@gmail.com> </td>
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Awaiting Agent
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Dear Colleagues, Reducing the BK224C L-band experiment performed with the PFB firmware, I follow the novel amplitude calibration procedure presented in VLBA Memo #37 by Craig Walker. As...
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<div>Dear Colleagues,</div><div>Reducing the BK224C L-band experiment performed with the PFB firmware,</div><div>I follow the novel amplitude calibration procedure presented in VLBA Memo </div><div>#37 by Craig Walker. As suggested, I use the full width to calibrate bandpass</div><div>with BPASS setting</div><div>BPASSPRM(10) 6</div><div>I also set ICHANSEL 1,64,1,0 to use all the channels, though it seems like</div><div>BPASSPRM(10) 6 is enough for that.</div><div>My question is re. the same verb ICHANSEL in the next step, the task ACSCL.</div><div>Surprisingly, there is no recommendation on that in the Memo.</div><div>Do I have to set it ICHANSEL 1,64,1,0 [to work with the full band]? By default</div><div>it is set as 0 using 75% central channels if VLBAAMP is run. The reason I</div><div>ask this question is the difference in flux scales at a level of ~5% between these</div><div>options (lower flux densities for the full width option in ACSCL).</div><div>I would also appreciate any comments re. DOBAND parameter in ACSCL.</div><div>Any recommendations? There are 5 options available. Currently, I use DOBAND 1.</div><div>Best Regards,</div><div>Alexander</div>
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