Author: iz4wnp

NanoVNA V2: RTL-SDR.com FM Bandstop Filter Measurements via NanoVNA QT VHF National Hurricane Center’s WX4NHC Annual Station Test is Successful June 29, 2020 No comments…

Go all the way to the top! ARRL has everything you need to pass the Amateur Extra Class license exam with confidence. The ARRL Extra…

The Intrepid-DX Group, a US-based IRS 501(c)(3) nonprofit organization that promotes amateur radio in developing countries, has announced its first Youth Essay Contest. The prize…

E’ uscito il nuovo numero della rivista tecnica Firmware 2.0. Il focus di questo mese è dedicato al settore Power/Motor e Robotics. All’interno troverete articoli…

Three strong winter storms (Petra, Sabine and Bianca) in February 2020 destroyed all the antennas of the Amateur Radio Remote-Station on the Mount Rigi Scheidegg…

Well-known contester, DXer, and National Contest Journal (NCJ) Editor Scott Wright, K0MD, has been “substantially” stepping back from ham radio while offering his expertise to the US…

Digital Modes FT8DMC 3rd Anniversary-Activity Days 2020 June 15, 2020 No comments To commemorate our 3rd anniversary, special event stations will be on air during…

Each year on July 1, the anniversary of Canada’s Confederation, Radio Amateurs of Canada (RAC) sponsors the Canada Day Contest. The event continues until 2359 UTC…

Description Buy from EladUSA with Factory Support from Microtelcom PERSEUS  is a software defined VLF-LF-MF-HF receiver based on an outstanding direct sampling digital architecture. It…

Lo Schmitt-trigger è uno dei circuiti più utilizzati in elettronica. Questo articolo spiegherà brevemente perché. Inoltre, ci aiuterà ad utilizzare questa funzionalità anche quando abbiamo…

XR0YSP Team will be active from Easter Island, IOTA SA – 001, 15 – 30 September 2020., XR0YSP Easter Island. From DXNews.com, ,

TT8RR and TT8XX Team will be active from Chad, 29 September – 12 October 2020., TT8RR TT8XX Chad. From DXNews.com, ,

TO5T Team will be active from Ile Aux Marins, IOTA NA – 032, Saint Pierre and Miquelon, 10 – 17 August 2020., TO5T Ile Aux…

Shabu, M0KRI will be active as 5X1RI from Uganda during two weeks end of July – Mid August 2020., 5X1RI Uganda. From DXNews.com, ,

Rich, M5RIC will be active as PJ4/M5RIC from Bonaire Island, IOTA SA – 006, 22 – 29 September 2020., PJ4/M5RIC PJ4CC Bonaire. From DXNews.com, ,

FlexRadio Systems announces the immediate availability of SmartSDR v2.4.10 SmartSDR v2.4.10 is a special “interim” release.  This release is intended primarily only for users who…

News New IARU Electromagnetic Compatibility (EMC) Coordinator Appointed June 30, 2020 No comments The International Amateur Radio Union (IARU) Administrative Council has appointed Martin Sach,…

The International Amateur Radio Union (IARU) Administrative Council has appointed Martin Sach, G8KDF, as global Electromagnetic Compatibility (EMC) Coordinator, succeeding Tore Worren, LA9QL. “EMC is a…

Bands and Modes All HF bands will be in play, including the WARC bands, with the exception of 60 meters. Simplex on 2 meters and 6…

“This year’s ARRL Field Day adventure had me camping in the Flambeau River State Forest located in Northwestern Wisconsin and running as a 1-Bravo station….

Il controllo degli accessi ai dispositivi è oggi un’operazione molto semplice grazie alla tecnologia messa a disposizione da MikroElektronica. RFid Reader è una scheda che ha lo scopo di leggere le…

PMR446 – What’s Legal? Sounds like a straight-forward question to answer doesn’t it? If you want to operate legally on the PMR446 band you require…

On May 30, operators at WX4NHC at the National Hurricane Center (NHC), working from home, conducted the annual readiness check of the station and of…

In questo articolo analizziamo un’applicazione con microprocessori AVR ATmega32M1 per motori DC brushless. I motori brushless sono idealmente derivati dai motori in DC con il proposito…