Hosting HamNation & FreeDV Digital Voice Over HF!
Antenna
80 METER FRAME ANTENNA
by Harry Lythall – SM0VPOI keep on and on about my little balcony and the antenna restrictions it imposes on my HF antennas. This project… Read more
End-Fed Antennas – The Doctor Will See You Now! ARRL
End-Fed HF antennas are becoming increasingly popular, especially for limited space applications, but how well do they really work? In this episode,… Read more
MFJ-226 1-230 MHZ ANTENNA EXPECT TIMES GRAPHIC ANALYZER
MFJ VNA Antenna Analyzer covers 1 to 230 MHz, 1Hz resolution. •Frequency sweep plots: SWR, Impedance, Resistance, Reactance,Phase Angle, Comple… Read more
Review
ELAD FDM-DUO SDR QRP Quick Tour and Review
FDM-DUO is a SDR tranceiver that offers the possibility to operate STand-alone like traditional radio or attached to a Personal Computer discovering t… Read more
A simple method for Decibel power calculations. Receivers. – Ham College 51
Questions from the General Amateur Radio exam pool part 22. A simple method for Decibel power calculations. Receivers. Read more
![Silphase R1 receiver [ VIDEO ]](https://i0.wp.com/www.nerfd.net/wp-content/uploads/2020/12/head-img-265x168-1.png?w=635&ssl=1)
Silphase R1 receiver [ VIDEO ]
Silphase R1 receiver. Telescoping antenna 1.15m. Location is city center Warsaw, Poland. Outside temperature +4 Celsius degrees. Frequency 1413 kHz. I… Read more
Optimizing Receiver Performance – “ARRL The Doctor is In” podcast. Listen…and learn!
There are a number of ways that you can adjust your transceiver for optimum receive performance Read more
Using the MFJ-1788 Mag Loop Antenna Horizontally
“I test the MFJ-1788 in a horizontal position on my rooftop. The performance is great on 20m. I used an MFJ Cobweb antenna as the comparison ant… Read more
Equipment
New ! Kenwood TPZ-D553
Kenwood TPZ-D553 Product name TPZ-D553TPZ-D553SCH: lithium-ion battery KNB-74L (7.4V / 1100mAh) standard accessory TPZ-D553MCH: lithium-ion battery KN… Read more
Elecraft KX2 announced at the Dayton Hamvention 2016
Elecraft KX2 Hello to all, We are please to announce a new radio to complement the KX3 and the KX-Line. Here are the details. What: Elecraft announc… Read more
LNR FX-4A QRP HF Transceiver
QRP HF Transceiver LNR is pleased to announce the FX-4a. This unit replaces the original FX-4 that we introduced in 2013. The original FX-4 was an exc… Read more
STEMlab 122.88-16 SDR kit basic – REDPITAYA
REDPITAYA – Tailored for HF+50MHz SDR & other RF applications – Comes with two 16 bit ACDs 50 ohm inputs; 14 bit DACs 50 ohm outputs… Read more
News
Germany: Temporary licence for 160m ham radio band extended
IARU Region 1 reports Germany’s temporary license for the amateur radio 160m band has been extended until the end of 2021 The IARU-R1 site says:… Read more
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 fr… Read more
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… Read more
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, ma… Read more
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… Read more
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