Author: iz4wnp

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Il Crucintarsio di settembre: stampa, gioca e vinci

In questo numero i lettori saranno messi a dura prova. Il crucintarsio di questo mese, infatti, riguarda gli inventori, i matematici, i geni, i fisici…

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TI5W Costa Rica. From DXNews.com

KL9A will be active from Costa Rica in CQ WW DX CW Contest 25 – 26 November 2017 as TI5W., TI5W Costa Rica. From DXNews.com,…

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Stacking Yagi Antennas Vladimir Umanets UA9BA. From DXNews.com

Ural Mountains are in such geographical position thatthree of the most populated areas – Europe, Asia and South-West Pacific – are in the opposite directions…

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Salvation Army Seeks Amateur Radio Operators for Possible Caribbean Deployment

The Salvation Army Team Emergency Radio Network (SATERN) has been asked to recruit SATERN Amateur Radio operators for potential deployment to TSA’s Puerto Rico and…

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6Y0W 6Y0D 6Y0AE 6Y0BE 6Y0HM 6Y0ND Jamaica. From DXNews.com

LZ1NK, LZ2BE, LZ2HM, LZ3ND, LZ4AE, TA3D, TA2TX will be active from Jamaica Island, IOTA NA – 113, as 6Y0W, 6Y0D, 6Y0AE, 6Y0BE, 6Y0HM, 6Y0ND 23…

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3V8TD Djerba Island. From DXNews.com

Mik, HB9FSA is currently active from Djerba Island, IOTA AF – 083, as 3V8TD., 3V8TD Djerba Island. From DXNews.com, ,

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Revised ARRL Frequency Chart Now Available

An updated ARRL frequency chart is now available for printing and downloading at http://www.arrl.org/graphical-frequency-allocations. The chart has been updated to include our new bands at 2,200…

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La scheda NanoPi Neo Air 512 MB

La NanoPi NEO Air è una scheda ARM open source di dimensioni 40 x 40 mm con processore A7 di Allwinner H3 Quad Core a…

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Le sorgenti di rumore nei sensori d’immagine CCD

Quando un sensore CCD riprende un’immagine, con essa viene acquisito anche del rumore, come se fosse anch’esso un segnale utile, ma di fatto degradando le…

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WP3C & NP4DX will be QRT – Hurricane Maria

“Here some images of the damage that Hurricane Maria did. The roof of my garage is completely gone, a tower collapsed and all the antennas…

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IARU President: Traditional Aspects of Ham Radio May Not Be Attractive to Newcomers

The 24th General Conference of International Amateur Radio Union Region 1 (IARU-R1) convened September 17 – 23 in Landshut, Germany, with representatives of 40 member-societies…

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Jeffersonville Ham Radio Operator uses passion to help Hurricane victims in Puerto Rico

WDRB 41 Louisville News Jeffersonville HAM radio operator uses passion to help hurricane victims in Puerto Rico   Antenna HF Vertical Antenna – Cushcraft R9…

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ESPertino, demoboard software

Quando si riceve in anteprima una scheda o un microcontroller per me è come iniziare un viaggio, una nuova avventura. Iniziare a studiarne caratteristiche e…

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Mosfet e IGBT per il controllo motori

La tecnologia attuale per il controllo motore vede l’utilizzo di dispositivi microelettronici al fine di offrire un migliore controllo della velocità, della posizione e della…

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5K0T San Andres Island. From DXNews.com

Radio Amateurs members of Yaguarete DXers Group will be active from San Andres Island, IOTA NA – 033, as 5K0T, 12 – 26 November 2017.,…

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FY/DL7BC FY/DL7BC/P French Guiana. From DXNews.com

Hartwig, DL7BC will be active from French Guiana 26 November – 7 December 2017 as FY/DL7BC and FY/DL7BC/P., FY/DL7BC FY/DL7BC/P French Guiana. From DXNews.com, ,

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Torna il Mercatino Scandicci

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ALE Operators Needed to Support Disaster Relief Flights in the Caribbean

Ham radio volunteers living in areas having good signal propagation into the Caribbean region are being asked to activate their home ALE (automatic link establishment)…

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MFJ-226 Graphical Impedance Antenna Analyzer – Full Review

Graphical Impedance Antenna Analyzer Review/Demo MFJ VNA Antenna Analyzer covers 1 to 230 MHz, 1Hz resolution. •Frequency sweep plots: SWR, Impedance, Resistance, Reactance,Phase Angle, Complex…

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ACOM ATU04AT- REMOTE AUTOMATIC ANTENNA TUNER AND SWITCH

Remote matching of antennas – less losses in the feed line. Designed for installation in a shack, under a shed, or in open (see mounting…

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FalconSAT-3 Now Open for Amateur Radio Use

The Air Force Academy satellite FalconSAT-3 is now open for Amateur Radio use as a digital store-and-forward system. Built in 2005 and 2006 by cadets and faculty…

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ACOM A1200S 1.8 – 54MHz Power Amplifier

ACOM A1200S  Five inch (5”) (108x65mm) high resolution color display, 800×480 pixels and 24-bits colors. The final stage uses field effect (MOSFET) transistors type BLF188…

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Packaging dei sensori MEMS: le sfide per il futuro

I dispositivi realizzati in tecnologia MEMS, in particolare i sensori, sono entrati ormai a far parte della nostra vita di tutti i giorni: autoveicoli, dispositivi…

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VHDL for beginners: Dati e tipi

Eccoci alla seconda lezione del corso base di VHDL. Nella precedente lezione, prettamente teorica, abbiamo affrontato una panoramica sul linguaggio introducendo i concetti base che…

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Tempo di DAI-day

Nel 2016 è stato istituito il “DAI-day”, manifestazione radiantistica a cadenza annuale che si svolge il primo sabato di Ottobre di ogni anno, dalle 06:00 UTC alle…