Coaxial cable for radio astronomy from Norman Pomfret
Co-axial cable Impedance. Matching impedance is not too critical when you are not transmitting POWER. where out of phase reflections can cause
Read more
astronomy.network The Website of Lichfield Radio Observatory (LRO)
Andrew Thornett, Lichfield, England, M6THO, andrew (at) thornett (dot) net
Instructions on using 20m Skynet radio dish at Green Bank Observatory
Observing Advice for the NRAO Skynet 20-meter telescope Following is from 22/3/2025 on following link: https://www.gb.nrao.edu/20m/obsadvice.html Links UNC Skynet 20m
Read moreMy data so far from 20m Skynet dish at Green Bank Observatory
SARA members have access to this telescope, providing an incredible opportunity to use a professional telescope for personal observations, which
Read more1m Triax Satellite Dish arrives for water maser radio observing programme
Another project underway is water maser radio observing. This requires a 1m dish (arrived today, below) and an LNB for
Read moreVideo from inaugural meeting of British Astronomical Association Radio Astronomy Group Hydrogen Line Group
Click below to download video:
Read moreHow to zero resistance measurements on VA40B Multimeter
I own the VA40B Multimeter – part of my testing regime for aerials involves measuring resistance. To ensure accurate resistance
Read moreDirection of movement and Doppler shift in radio frequencies
In cosmology, a positive Doppler shift in radio waves means an object is moving away from us. This happens because the waves
Read moreChatGPT advice on how to look for cause of mal-performance on 1420MHz-tuned Yagi aerial 17/3/2025
1. Visual Inspection Check for: 2. Continuity and Resistance Testing Using a multimeter: 3. SWR Measurement Use an SWR meter or
Read moreFITS Software
The following is an extract from https://fits.gsfc.nasa.gov/fits_viewer.html: FITS Image Software Packages for image viewing, analysis, and format conversion The following
Read moreUsing TOPCAT Software for Windows to visualise and interpret SDFITS data (NASA single dish data format)
The SDFITS single dish data format (https://safe.nrao.edu/wiki/bin/view/Main/SdfitsDetails#:~:text=Briefly%2C%20SDFITS%20is%20a%20convention%20for%20storing%20single-dish,freedom%20to%20add%20any%20additional%20columns%20as%20necessary): The SDFITS convention was developed in the late 1980s. An early version was
Read more