1. Oktober HF forhold

29. september 20206. april 2021 Ingolf Schau

Video om HF udbredelse og forhold

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Foredrag om ”DX og de forskellige bånd”.Foredrag 13. august 2020

Solar X-Rays Geomagnetic Field

Lær CW Online på Dansk

DX Zone

North Shore Radio Association
A large amateur radio club north of boston, ma.
DK8EY
Amateurfunk bei DK8EY, Chris aus Mettmann im Neandertal.
DL1IAO Stefan
HF Radio Contesting and personal information: Latest scores, station tour, DL contest records and large photo section, maps and software

ARRL

ARRL Announces Leadership Changes in the Hudson Division 28. marts 2023
ARRL Director Ria Jairam, N2RJ, who has represented the Hudson Division since 2019, has stepped down, effective March 31, 2023, at 5 PM Eastern.Vice Director Nomar Vizcarrondo, NP4H, of Englewood, New Jersey, will accede to the Director’s chair. Vizcarrondo, who earned his amateur radio license in 1978 at the age of 11, will serve as […]
The K7RA Solar Update 24. marts 2023
Sunspot numbers were lower again this week, with the averagedeclining from 143.6 two weeks ago to 118.7 last week and now 68this week. Average daily solar flux sank 8 points from 153.6 lastweek to 145.6.Six new sunspot groups emerged over the week, one on March 17,another March 18, three more on March 19, one more […]
CT Governor Proclaims April 16 – 22 Amateur Radio Recognition Week 22. marts 2023

DX-Maps

06-Feb 1200 VE7BQH 50, 144 and 432 MHz antenna charts updated 6. februar 2023
VE7BQH 50, 144 and 432 MHz antenna comparison table updated
01-Feb 1200 New version 3.1 (build 704) of VQLog 1. februar 2023
New version 3.1 build 704 of VQLog is available
13-Dec 1600 New version 3.1 (build 683) of VQLog 13. december 2022
New version 3.1 build 683 of VQLog is available
12-Apr 1130 New version 3.1 (build 677) of VQLog 13. december 2022
New version 3.1 build 677 of VQLog is available
04-Dec 1130 144 MHz EME calendar 2023 4. december 2022
The 144 MHz EME calendar for 2023 is available

RTL SDR news

RSGB 2022: The UK Meteor Beacon Project 21. marts 2023
During last years Radio Society of Great Britain (RSGB) 2022 convention, Brian Coleman (G4NNS) presented a talk about the UK Meteor Beacon Project. The idea behind the project is to use a transmit beacon and a network of user-run receivers to help detect and study meteors. The talk has recently been uploaded to YouTube. Radio […]
admin
TXAdvance: An RF Transmitter Manager Android App that uses RTL-SDR 15. marts 2023
Recently we came across a new RTL-SDR app on the Google Play store called TXAdvance which appears to be designed for professional sound engineers working in TV/film/stage/music production industry. The app uses an RTL-SDR to display the RF spectrum, helping sound engineers manage the RF spectrum for all their wireless sound recording devices, ensuring there […]
admin
Building a 315 MHz Jammer with an Arduino 15. marts 2023
Over on YouTube CiferTech has uploaded a video showing how to create a low cost 315 MHz jammer using an Arduino and a cheap 315 MHz transmitter circuit. The 315 MHz band is used in some countries by short range wireless devices such as garage door openers, tire pressure sensors, hone security systems and car […]
admin
Receiving TPMS Tire Pressure Data from a Mazda CX 5 with an RTL-SDR 15. marts 2023
Over on YouTube Robert from the Robert Research Radios channel has uplaoded a video showing how he has been using an RTL-SDR and rtl_433 to measure his Mazda CX5's wireless tire pressure sensors. The Mazda CX5 comes with TPMS tire pressure sensors in each tire, however when there is a low pressure warning, it does […]
admin
TechMinds: Reviewing the ANTSDR E200 9. marts 2023
A few days ago we posted about the upcoming crowdfunding campaign of the MicroPhase AntSDR E200, an SDR that is very similar to the PlutoSDR, but with a much larger FPGA and more stable TCXO. One interesting feature is that it can run PlutoSDR or USRP firmware, allowing it to work with software that supports […]
admin

AMSAT UK

Austria restricts 23cm band operation 19. marts 2023
Austria has become the latest country to impose restrictions on Amateur Radio operation in the 23 cm band (1240-1300 MHz) to protect to protect ground-based receivers for the Galileo RNSS satellite constellation. Austria’s national amateur radio society ÖVSV say: Changes … Continue reading →
m5aka
AMSAT-India at National Science Day event 10. marts 2023
To celebrate National Science Day of India on February 28 one of the biggest Science Carnival 2023 was organised by Gujarat state – India at prestigious Science City Ahmedabad during 28th February to 4th March 2023. AMSAT-INDIA was specially invited … Continue reading →
m5aka
Space Station contact with students in Malta 9. februar 2023
An ARISS contact between students at Stella Maris College, Gzira, Malta, callsign 9H1MRL and the International Space Station (ISS) is scheduled for 12:34 GMT on Wednesday, February 15. Update March 26: Report on the contact in the Times of Malta … Continue reading →
m5aka
User manual for CAS-10 satellite 23. december 2022
On December 18, 2022, CAMSAT’s satellite XW-4 (CAS-10) was deployed from the Tianzhou-5 cargo ship that was docked to the Tiangong space station. CAS-10 carries a linear amateur radio transponder. The satellite user manual can be downloaded here: CAMSAT XW-4 (CAS-10) … Continue reading →
m5aka
User manual released for Fengtai OSCAR-118 16. december 2022
CAMSAT’s transponder satellite CAS-5A (Fengtai OSCAR-118) launched on December 9, 2022, carrying three amateur radio transponders. The satellite user manual can be downloaded here: CAMSAT CAS-5A Amateur Radio Satellite User’s Manual V2.0 CAS-5A Frequencies: CW Beacon: 435.570MHz CW 22wpm U/V … Continue reading →
m5aka

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