After some modification to the amplifier, the oscillation has been suppressed enough. The dipole had to be shortened 15% or so due to the proximity to ground and buildings but no matter, the system works.
We got immediate spots in Great Britain on our first transmission cycle - in broad daylight @ 40m using our club call sign.
The dipole has a metal facade directly to the east, which might explain the directionality of the spots #physics
The big question we ask ourselves is: will we get to cross the pond tonight with this setup? Reaching La Palma lets one hope that more is in store for these four transistors #hamradio #electronics #physics #education
#WSPR Student project update: Today we let the student built beacon operate through the night for the first time using our club call sign, and it is fascinating to see places open up during dusk.
Yet, since our dipole mainly shoots west, eastern europe and russia only came on the map slowly while La Palma appeared relatively early
Going into the second night with the same setup which, btw, has not been running at the design 30dBm but closer to 24 due to enduring stability problems. Let's see if the picture will change #hamradio #physics #electronics
Well, since we are bracing for the impact of an imminent major announcement on pulsars and, maybe, some gravitational wave background, why not enjoy this 2004 special Science Magazine issue on pulsars!
Martin Lewis Perl was born #OTD in 1927. He is famous for discovering a subatomic particle called the tau lepton.
In a series of experiments conducted in the mid-1970s at the SLAC National Accelerator Laboratory, Perl and his colleagues used a new particle accelerator to smash electrons and positrons together and observed a phenomenon that could not be explained with the then current scientific knowledge of subatomic particles. He won the Nobel Prize in Physics in 1995. via @iaeaorg
In addition to making final preparations for #Euromar2023, we're also making preparations to host 2 further #NMROnline – ELECTRO webinar presentations next week!
He as one of the founders of the science of spectroscopy.
Ångström is also well known for his studies of astrophysics, heat transfer, terrestrial magnetism, and the aurora borealis. In 1852, Ångström formulated in Optiska undersökningar (Optical investigations), a law of absorption, later modified somewhat and known as Kirchhoff's law of thermal radiation. The Ångström unit is named after him. via @Wikipedia
Ernest Walton died on 25 June 1995 in Belfast. Born in Dungarvan, Co Waterford, he was a physicist and Nobel laureate for his work with John Cockcroft with “atom-smashing” experiments done at Cambridge University in the early 1930s, and so became the first person in history to artificially split the atom.