... a dynamic spectra of the 300 seconds of 327 receiver data (.gif) : . the strength of the transmitted 327 birdie on the telescope and the Rhode and Schwartz spectrum analyzer (.ps) ( .pdf ): . On 24mar13 a 327 birdie was transmitted from the control room patio and recorded using the 327 MHz receiver in the dome. ... The same birdie was seen at -105dbm 1 meter away using the 904 Efield probe. the table below summarizes the detectability of a 327 MHz birdie from the control room patio: . ...

... 2.3 Data acquisition Spectra generated by the Multibeam correlator contain the usual structure seen in spectra from other H i instruments: a bandpass spectrum which is the sum of the sky , ground and receiver temperatures multiplied by the product of the filters in the receiver chain; superimposed on this is a noise ... Note also that sources extended much beyond ,40 arcmin can be imaged poorly in HIPASS images because of the bandpass sidelobe effect described in Section 3.3. ...