Newsletter May 2020


Elements 202005 (3.3 MB, 145 downloads)

Consultation on limiting exposure to EMF

Ofcom home page

Ofcom are consulting on proposals to include a specific condition in Wireless Telegraphy Act licences requiring licensees to comply with the relevant levels from the ICNIRP Guidelines (PDF, very technical).
This condition would apply to all equipment which can transmit at powers above 10 Watts (including, for example, the licences of mobile phone companies, TV and radio broadcasters, most point-to-point microwave links, and Amateur Radio)

Amateur Radio licences already contain conditions requiring safety precautions against radio frequency (RF) radiation to be taken in line with Public Health England (PHE) recommendations and that the radio amateur syllabus covers health aspects of electromagnetic fields and also refers to PHE and the ICNIRP Guidelines but may have to be amended to give effect to the proposals.

To get an idea of how this could affect an Amateur Radio station I’ve uploaded a tool to calculate the field strengths for a variety of antenna types and output powers.

Icnirp (1.3 MB, 195 downloads)

The tool allows you to explore your antenna setup (there are lots of predefined antennas and the ability to input the parameters for your antenna if it’s not included) and see what sort of separation you’d have to achieve.

Basically you would need to keep the public 1m away from an dipole fed with 100W, easy enough unless you’re running it along a fence, higher powers and more directional antennas produce higher EMF levels within their transmit lobes so you would want to keep the public up to about 5m away (easy enough if at the top of a 20m tower).


CQWW SSB 2019 Certificate

** LATEST UPDATE 16/5/2020** Coronavirus (COVID-19) & Club Events Cancelled Status

Coronavirus disease (COVID-19) is an infectious disease caused by a newly discovered coronavirus.
Everyone must stay at home to help stop the spread of coronavirus.
You should only leave the house for 1 of 4 reasons:
1) shopping for basic necessities, for example food and medicine, which must be as infrequent as possible
2) one form of exercise a day, for example a run, walk, or cycle – alone or with members of your household
3) any medical need, or to provide care or to help a vulnerable person
4) travelling to and from work, but only where this absolutely cannot be done from home
This affects some of our club events where some are cancelled, and others will depend on what happens regarding the lockdown whether it is kept for a long period or lifted. Things are changing day to day, so we need to keep up with what is the latest actions. Any updates on Club Events will be posted on the Website and on Facebook CPSARC

• 5th June – Club Night —- CANCELLED
26th to 28th May – Museums Weekend —- CANCELLED
• 4th & 5th July – VHF FIELD DAY —- CANCELLED
• 25th & 26th July – RSGB IOTA Contest from Tiree —- CANCELLED
• 7th August – Club Night —- POSSIBLITY OF BEING CANCELLED
14th August – 27th Annual Mini-Rally Night —- LOOKING LIKELY POSSIBLITY OF BEING CANCELLED
• 22nd & 23rd August – Lighthouse Weekend —- POSSIBLITY OF BEING CANCELLED

Take Care and Stay Safe

April Newsletter

Elements 202004 (1.8 MB, 141 downloads)

ACTIVITY DAY between Sunday 4th April and the 11th April

1) Date – ANY DAY BETWEEN THE 4th APRIL and the 11th APRIL
(2) Time 00:00 to 23:59 Local Time
(3) Modes SSB /FM / CW/ AM/ Data
(4) Bands 1.8, 3.5, 7, 10, 14, 18, 21, 24, 28, 50, 70, 144 & 432 MHz
(5) Power As per your licence
Full=400W, Intermediate=50W and Foundation=10W
(6) Your Locator Worldwide Locator (WWL) i.e. IO85MX

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