Come progettare un filtro di Butterworth per applicazioni generiche che richiedono un elevato livello di
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La progettazione dei Filtri di Butterworth
Come progettare un filtro di Butterworth per applicazioni generiche che richiedono un elevato livello di selettività e un ottimo livello di integrazione circuitale. Un filtro
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President Randy III – UK Price Revealed
Knights here in the UK have become the first to offer the new President Randy III at a price of £189.00 The radio is expected
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ARRL Interview Explains Background of Ham Radio in Space Film Short
Josh Tanner, the Australian filmmaker who produced the thriller Decommissioned by Perception Pictures, has explained how he came up with the idea to develop the movie
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Amateur Radio Helping to Fill Earthquake Report “Donut Holes”
An article describing how radio amateurs can help fill the information “donut hole” by providing post-earthquake “did you feel it” (DYFI) reports via Winlink HF radio email appeared on
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Mystery Box! ARRL Expo At Home Surprise Pack
The ARRL offered surprise boxes as part of their ‘Expo at Home’ for the 2021 Orlando Hamcation. I ordered a mystery apparel pack and a
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Another Difficult Antenna Situation
Tim, W4FTP, asks how he can use some tall but skinny trees along the back of his property as part of his antenna system. We
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“Whirlwind Boom” Emergency Communications Exercise Set in Northern Florida
The amateur radio communications team of the Florida Baptist Disaster Relief has created a multi-site radio communications exercise dubbed “Whirlwind Boom,” designed to bring together
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Small Circuits Revival – Relè ad alta efficienza energetica (Parte 3)
In quest’ultima variazione dello “stairwell lamp circuit” cambieremo la tensione di rete. Ma attenzione: questo può essere letale! Se non hai ancora alcuna esperienza con
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Controllo automatico del livello di un serbatoio
Il problema di controllo e monitoraggio è uno dei più importanti negli ambienti industriali, da questo derivano le azioni che governano i cicli produttivi nonché
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Ham Radio experiment – End fed half wave antenna sloper vs flat horizontal orientation
Antenna The New Carolina Windom By Len Carlson, K4IWL January 05, 2016 No comments “ As with all ham stations QRO or QRP, ten percent
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A Filament Slingshots Towards Earth | Solar Storm Forecast 02.22.2021
Antenna 4 x 5el Yagi 20m Stack March 04, 2020 No comments Read more A High Efficiency Extended Length Mobile Antenna May 08, 2016 No
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La moderna tecnologia QR nell’automazione industriale e commerciale
Nel corso degli anni, molte tendenze tecnologiche si sono succedute. Tuttavia, alcune sono riuscite a resistere nonostante previsioni sulla loro imminente fine. Una di queste
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Raspberry Pi Pico: come si programma con VS Code?
Negli episodi precedenti abbiamo visto che cos’è Raspberry Pi Pico e come si utilizza. Abbiamo visto come poterla gestire in modi differenti, e in questo
Read moreJ68HZ Saint Lucia Island. From DXNews.com
J68HZ Team will be active from Saint Lucia Island, IOTA NA – 108, in ARRL DX SSB Contest, 6 – 7 March 2021., J68HZ Saint
Read moreJW6VDA Svalbard. From DXNews.com
Tom, LA6VDA will be active again from Svalbard Islands, IOTA EU – 026, 26 April – 9 May 2021, as JW6VDA., JW6VDA Svalbard. From DXNews.com,
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SmartSDR for iOS v3.9.12 Now Available
Marcus, DL8MRE announces that release of SmartSDR for iOS v3.9.12 is now available for download or update from the Apple App Store. SmartSDR is a
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A direct hit! The solarstorm our Sun launched is confirmed to be Earth-directed!
A direct hit! The #solarstorm our #Sun launched is confirmed to be Earth-directed! NASA prediction models show impact early February 23. Because Earth’s shield is
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Radioddity Raddy RW3 Go-Kit-Type Radio AM/FM/WX, Phone Charger and More
Radioddity Raddy RW3 Go-Kit-Type Radio AM/FM/WX, Phone Charger and More [Small Size But All-Purpose] Unlike other FM/AM/NOAA radios, the RW3 is a Bluetooth speaker with
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Generatori di CLOCK
Gli oscillatori sono impiegati per produrre segnali a frequenze audio o radio, per una grande varietà di applicazioni. Ad esempio, semplici oscillatori a frequenze audio
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Paper Logging and Using Fast Log Entry for POTA – Ham Radio Q&A
“I typically paper log my Parks on the Air contacts during an activation. After I get home I will transcribe and edit the log with
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PANADAPTER For Any Radio DC – 160 MHz SDR Antenna Switch
PANADAPTER For Any Radio DC – 160 MHz SDR Antenna Switch Antenna New! Vertical Loop Yagi ( 6 to 40m ) – Ultra Beam March
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German radio hams tackling RF noise pollution
DARC reports 35 Electrical Noise Area Monitoring Systems (ENAMS) have been delivered and another 20 locations are sought as part of the effort to monitor
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Raspberry Pi Pico: programmazione con Visual Studio Code
Negli articoli precedenti, abbiamo fatto un’introduzione approfondita a Raspberry Pi Pico. Abbiamo parlato di questa nuova scheda a microcontrollore offerta dal Lampone Britannico e abbiamo
Read moreP29MM Papua New Guinea Nicholas Miklouho Maclay. From DXNews.com
P29MM Team will be active from Papua New Guinea, in honor of 175th anniversary of the birth Nicholas Miklouho-Maclay., P29MM Papua New Guinea Nicholas Miklouho
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Permission granted for 60 foot ham radio masts
Joel Banner Baird Burlington Free Press SHELBURNE – One-on-one talks with fellow amateur radio operators as far away as Moscow are now firmly on the horizon
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