Pulsar Observations - Keith Juson (G0JLO)

NOTE: All the information and images presented here are reproduced with permission by Keith Juson (G0JLO).

Efforts with a 8 x 20 element yagi array has seen the successful detection of B0329+54, B1642-03 and B1749-28.  Keith would like to acknowledge the assistance of others towards achieving his success, particularly Hannes Fasching (OE5JFL),  Andrea Dell'Immagine (IW5BHY) and Mario Natali (I0NAA).

Background

Keith comes from an extensive background in EME and has leveraged that experience and station equipment to achieve success with pulsar hunting.

Receiving System

Antenna type:               8 x 20 element yagi array with tracking (26.7 dBi). Open line feed.
Operating frequency:      432 MHz
Bandwidth:                   2 MHz
First stage amplifier:      Gain 22 dB, NF = 0.3dB, at antenna
Second stage amplifier:  Gain 24 dB, NF = 0.5dB
Receiver:                      RTL_SDR Dongle, 2 MHz BW

Antenna

The impressive 8 x 20 element EME array used by G0JLO to receive signals from the pulsars at 432 MHz.

 

The Antenna Array at G0JLO

The Results

 Keith (G0JLO) is using analysis software by Andrea Dell'Immagine (IW5BHY) and Murmur tracking software by Mario Natali (I0NAA).  Mentoring by Hannes Fasching (OE5JFL).

B0329+54

The results of detection of B0329+54 (~ 3300 ly) - observation time 120 minutes.

A very nice result with SNR > 24 !!!

B1642-03

The results of detection of B1642-03 (~ 8000 ly) - observation time 120 minutes.

Another nice result with SNR > 9.

B1749-28

The results of detection of B1749-28  (~ 4500 ly) - observation time 180 minutes.

A difficult one for G0JLO as it is close to the horizon.

Hopefully more EME-ers will become interested in chasing pulsars.