Author: iz4wnp

Spy Radio & Indoor Antennas – If they can do it, so can you!
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Spy Radio & Indoor Antennas – If they can do it, so can you!

Spy Radio & Indoor Antennas – If they can do it, so can you! Antenna Build your own Roll Up Slim Jim Antenna for the…

What is QSK? And How Do I Use It?
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What is QSK? And How Do I Use It?

What is QSK? And How Do I Use It? Antenna XR3-NV | HIGH PERFORMANCE 14 ELEMENT 20 / 15 / 10 METER MULTI-MONO CONTEST YAG…

La tecnologia Deeply Depleted Channel di SuVolta
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La tecnologia Deeply Depleted Channel di SuVolta

Abbiamo incontrato a Milano Jeff Lewis, Senior VP Marketing & Business Development di SuVolta, dove ci ha presentato, in concomitanza con l’IEDM 2011, la tecnologia Deeply…

Ottimizzare la memoria su MSP430 e μC/OS-II
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Ottimizzare la memoria su MSP430 e μC/OS-II

Questo articolo mostra come utilizzare un Micrium C/OS-II real-time kernel su MSP430 soltanto con un piccolo consumo supplementare di memoria. Vedremo alcuni suggerimenti sull’utilizzo delle…

Yaesu FT-991A and FTDX10 Size Comparison
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Yaesu FT-991A and FTDX10 Size Comparison

  A photo showing the size of the new Yaesu FTDX10 in relation the existing FT-991A has been posted by John Kruk or Yaesu USA….

SSTV Event to Help ARISS Mark 20 Years of Continuous Ham Radio Operation in Space
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SSTV Event to Help ARISS Mark 20 Years of Continuous Ham Radio Operation in Space

Amateur Radio on the International Space Station (ARISS) will continue its year-long 20th anniversary celebration of continuous ham radio operation from the ISS this month,…

Yaesu FT DX10 Unboxing, First Impressions and Visual Comparison to the Icom IC-7300 / FTDX10 FT-DX10
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Yaesu FT DX10 Unboxing, First Impressions and Visual Comparison to the Icom IC-7300 / FTDX10 FT-DX10

Yaesu FT DX10 Unboxing, First Impressions and Visual Comparison to the Icom IC-7300 / FTDX10 FT-DX10 Antenna Four-square eight directions antenna system, with dummy load…

Contest University to Host Propagation Summit
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Contest University to Host Propagation Summit

Several radio propagation experts will share their knowledge during a Propagation Summit via Zoom, sponsored by Contest University (CTU). The event is scheduled for January…

Logbook of The World to be Offline for Approximately 6 Hours
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Logbook of The World to be Offline for Approximately 6 Hours

Logbook of The World (LoTW), ARRL’s online QSO confirmation system, will undergo scheduled maintenance beginning Monday, December 21, at 2300 UTC (6 PM EST) for…

SCR Gate Generatore di impulsi
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SCR Gate Generatore di impulsi

La famiglia di dispositivi a semiconduttore definita “raddrizzatori controllati al silicio” o SCR, comprende tiristori e triac. A differenza di molti altri semiconduttori che possono…

Review of MFJ-8504B RF Receiver Distribution Amplifier
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Review of MFJ-8504B RF Receiver Distribution Amplifier

Review of MFJ-8504B RF Receiver Distribution Amplifier Antenna Ham College 24 : Antennas and more questions from the Technician pool December 25, 2016 No comments…

Yaesu FTdx-10 First Look
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Yaesu FTdx-10 First Look

Hybrid SDR Configuration: Like the FTDX101 series, the new FTDX10 utilizes the Yaesu Hybrid SDR configuration – Narrow Band SDR and Direct Sampling SDR. The…

Transatlantic Tests Mark 99th Anniversary
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Transatlantic Tests Mark 99th Anniversary

On December 11, 1921, radio history was made when the signal from amateur station 1BCG in Greenwich, Connecticut, was heard in Ardrossan, Scotland, marking the…

ARRL Releases a New Edition of Storm Spotting and Amateur Radio
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ARRL Releases a New Edition of Storm Spotting and Amateur Radio

The third edition of Storm Spotting and Amateur Radio is now available from ARRL. Storm spotting gives radio amateurs another way to offer a public service by…

10 sensori da regalare a Natale al tuo fidato Arduino
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10 sensori da regalare a Natale al tuo fidato Arduino

Tic toc, si avvicina il momento più atteso dell’anno. Eh si! Manca poco al Natale e voi avete già fatto i regali? Avete pensato proprio…

VQ9RA Diego Garcia Chagos Archipelago. From DXNews.com

VQ9RA. Randy, WW6RG will be active again from Diego Garcia, IOTA AF-006, Chagos Islands, starting 18 January 2021, as VQ9RA., VQ9RA Diego Garcia Chagos Archipelago….

FCC Hits Rugged Radios with Citation over Illegal Radios
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FCC Hits Rugged Radios with Citation over Illegal Radios

FCC Hits Rugged Radios with Citation over Illegal Radios Antenna InLogis RF-PRO-1B Active Magnetic Loop Antennas RF-PRO-1B October 01, 2015 No comments Loop Antennas HF…

Got Amplifier. Do I Need Bigger Coax?
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Got Amplifier. Do I Need Bigger Coax?

Got Amplifier. Do I Need Bigger Coax?  Antenna Emergency Antenna Platform System (E-APS) – WC2FD November 02, 2015 No comments   A system to facilitate…

Best HF Ham Radio Under 00 – 4 Best HF Transceivers 2021
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Best HF Ham Radio Under $2000 – 4 Best HF Transceivers 2021

Best HF Ham Radio Under $2000 – 4 Best HF Transceivers 2021 Antenna 80m or 160m Reduced Half Sloper Antenna by W8AMZ January 28, 2015…

Tester IoT di temperatura e umidità con sensore DHT11, ESP8266 e ThingSpeak
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Tester IoT di temperatura e umidità con sensore DHT11, ESP8266 e ThingSpeak

In questo articolo viene descritto il progetto di un semplice sistema di monitoraggio di temperatura e umidità via web. In sostanza, sarà descritto come interfacciare…

FTDX10 [ Video  12/14 ]
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FTDX10 [ Video 12/14 ]

FTDX10 [ Video ] Antenna Vertical Dipole Array by OH1TV January 13, 2017 No comments An easy to build antenna for seaside locations 17m and…

How to Find Online Ham Radio Exams
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How to Find Online Ham Radio Exams

How to Find Online Ham Radio Exams Antenna Stringing Up Antennas – ARRL’s The Doctor Is In June 06, 2019 No comments “Trees make handy…

Measure length of coax, etc. with your scope, a battery and a resistor – simple TDR
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Measure length of coax, etc. with your scope, a battery and a resistor – simple TDR

Measure length of coax, etc. with your scope, a battery and a resistor – simple TDR Antenna Force 12 FPA-20-OCF Vertical running through 8 to…

Certificates and other changes [ CQ WW ]
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Certificates and other changes [ CQ WW ]

“ Certificates and other changes We have made some changes to the CQ WW Contest online score reporting to support requests we have received from…

ARISS: Celebrating 20 Years of Continuous Operations on ISS
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ARISS: Celebrating 20 Years of Continuous Operations on ISS

Twenty years ago – November 13, 2020 – the Expedition-1 crew turned on the ARISS Ericsson radio for the first time and completed several contacts…