The HF band plan in its version of 16 October 2020 (Virtual General Conference “Novi Sad”) including the annex has been revised. The band plan comprises 2 pages, as does the explanatory annex. It can be downloaded via this URL: https://www.iaru-r1.org/wp-content/uploads/2021/06/hf_r1_bandplan.pdf.
The IARU Region 1 ATV Contest will go ahead on the weekend of 12⁄13 June 2021. However, due to the COVID-19 crisis not all participants will be able to reach their portable sites, and some may feel that they are at a disadvantage in only being able to operate from home due to National restrictions.
To address these concerns, as for last year, the contest will be run with 2 sections:
Apart from these changes, the rules are as stated in the IARU-R1 VHF Handbook V9.01. An extract can be found here.
Please use the normal entry spreadsheet https://wiki.batc.org.uk/File:ATV-contest-log-callsign-20210612.xls and remember to select the correct Section on the Summary page. Entries should be submitted to National Coordinators or atv@iaru-r1.org before Monday 28 June.
Dave, G8GKQ, IARU Region 1 ATV Contest Coordinator.
In only two more weeks we will celebrate the WARD, the World Amateur Radio Day. At April 18 in 1925 the International Amateur Radio Union was formed in Paris. Just two years later, at the International Radiotelegraph Conference, Amateur Radio gained on shortwave the allocations still recognized today — 160, 80, 40, 20, and 10 meters. Since its founding, the IARU has worked tirelessly to defend and expand the frequency allocations for Amateur Radio. Today, Amateur Radio is more popular than ever, with more than 3,000,000 licensed operators!
World Amateur Radio Day is the day when IARU Member-Societies can show their capabilities to the public and enjoy global friendship with other Amateurs worldwide. For 2021 the IARU Administrative Council has chosen “Amateur Radio: Home but Never Alone” as the theme for World Amateur Radio Day, Sunday, 18 April 2021. Faced with a pandemic that is forcing the adoption of extreme physical isolation to reduce the spread of the virus, the worldwide amateur radio community has responded positively to overcome the resulting social isolation. In the days and weeks following the onset of the pandemic radio amateurs reached out spontaneously to one another via the airwaves at the local, national, and global levels. On-the-air activity was at an unprecedented level throughout 2020, with record-breaking numbers of entries in the major contests.
More information at https://www.iaru.org/on-the-air/world-amateur-radio-day/.
The IARU Region 1 Virtual General Conference in October 2020 approved the formation of a CW World Heritage Working Group as per proposal NS20_C4_09. More than twenty member societies agreed to their continued support regarding this working group.
Meanwhile an initial virtual meeting took place and attendants agreed to use Groups.io as a platform for further elaborating the subject. This group acts as gathering discussions and experiences on the “a CW World Heritage” topic. Coordinator of this group is Egbert Hertsen, ON4CAS.
It is the aim of this working group to continue the initiative within IARU Region 1 to get Morse code on different national lists of intangible cultural heritage.
Time and again the question arises as to how far you can turn the tuning knob when transmitting in SSB voice mode. Up to the edge of the band range? Using the 60 m band as an example, we will discuss the question here.
According to WRC-15, the range from 5351.5 to 5366.5 kHz, also called the “5 MHz band”, is allocated to the amateur radio service on a secondary basis. So, for example, are radio amateurs allowed to transmit on 5366.0 kHz within the WRC-15 60 m band in USB? [1]
The so-called “dial frequency” indicates only the frequency of the carrier suppressed in SSB. However, the modulation range for USB extends up to 3.0 kHz higher. That means 5366.0 kHz + 3 kHz = up to 5369.0 kHz. This means that a large part of the signal is outside the range assigned to the amateur radio service (see diagram, right signal, in red)! And: parts of the modulation spectrum cover the section intended for “narrow band weak signal modes”, such as WSPR. And thus leads to interference.
Therefore, the band plan indicates in the “notes”, that in the case of the 60 m band in USB, the highest “dial frequency” to be set is 5363 kHz (diagram, left signal, in green). Here the whole range of the modulation spectrum is below 5366.0 kHz. And thus both within the band and outside the “weak signal narrow band mode” range.
The same applies to the 20 m band: The highest frequency to be set in USB would be 14,347.0 kHz — i.e. 3 kHz below the upper band limit.
[1] Note: Individual countries have allocated a larger frequency range to the amateur radio service due to Radio Regulations Article 4.
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