DL7APV Pulsare detection

 

B2021+51

 

Bandwidth 2,2MHz with RTL-dongle and IW5BHY software Tempo for recording and folding and presto folding after conversion

Bandwidth 10MHz with airspy SDR and Presto Software for recording and folding

Recorded File:

After conversion: B2021+51_win.fil

Recorded File

After conversion: b2021+51.fil

 

Record date: 2021 sept 17 Start 13:00 UTC 6h

Local antenna direction from Az/EL 46/33 to 100/86

 

RTL settings:

Frequenz : 431.200 MHz, Gain 40dB

-s 2048000

 

Bin2fil data:

 

 

 

Rfifind -o mask -time 1 -timesig 4 -freqsig 37 -chanfrac 1 -intfrac 1

 

Airspy settings:

 

rec_gui:

ACQ time (s)

21600

Sample rate

10MSPS (airspy)

SR time series

2KSPS

Num chan

25

Frequency (MHz)

433.5

RF gain (dB)

30

IF Gain (dB)

9

BB gain

0

DIG gain

2

 

 

Bin2fil settings:

 

Conv start

0

Length

21600

Ampli

2

Filt H

55

Filt L

0.03

Filter typ

Bessel

Source name

 

DEC

 

RA

 

Center frequency (MHz)

433.5

SR

10MSPS (airspy)

SR error (ppm)

0

SR time series

2KSPS

Channels

25

 

 

Rfifind -o mask -time 1 -timesig 4 -freqsig 37 -chanfrac 1 -intfrac 1

 

Quiet and the typical electrical fence from neighbor

 

 

 

 

 

 

 

 

 

 

 

 

 

As in most cases the DM curve is much better as with the 2MHz recording

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Older recordings with 2MHz

and 2h observation time

 

 

 

 

 

 

 

back

 

 

Last update sept 2021