2025
Admin
Critical aspects of measurements when making a cantenna waveguide for radio astronomy. Extracts from SARA & BAA Radio Astronomy Group Mailing Lists 19/11/2025.
From Marcus D. Leech: Probe placement with regards to the distance from the back-short, probe length, and positioning of the waveguide at the proper dish<>feed spacing. That is, if you…
What is benefit of upgrading from 1m dish to 2.4m dish for hydrogen line?
This analysis is for a friend who has made this upgrade. The largest diameter dish we are currently using at LRO is 150cm dish made of 6 petals – soon…
How to change a normal Python‐level GNU Radio variable after the flowgraph has started
You can’t usually change a normal Python‐level GNU Radio variable after the flowgraph has started, but there are workarounds = you can make a variable externally adjustable while the script…
URSP-B210_RTLSDR_RSPduo_Stereo_FM_Receiver_181125a.grc
https://www.astronomy.me.uk/wp-content/uploads/2025/11/URSP-B210_RTLSDR_RSPduo_Stereo_FM_Receiver_181125a.zip
Screenshot of Data Collection from USRP B210–161125 on LRO-H2
I am concerned that I do not seem to be able to see hydrogen on this plot?
What is a P-ESA antenna?
The **P-ESA antenna**, or **Planar Electrically Steered Array antenna**, is a type of antenna that allows for adaptive beamforming and scanning over a wide range of angles. This design is…