Health scares, 18 metre masts, autonomous vehicles, economic recovery, critical national infrastructure, Huawei… It’s a long list.

2020/01852/TEL56: Rylett Road / John Betts House: 5G proposed mast and cabinets

In Hammersmith we’ve started to see planning notices for 5G base stations, ironically mostly from the company named Three, and yes, since you ask, they are using Huawei.

From the Society’s perspective, our concerns centre on the mast height, positioning, and the associated, rather retro, street clutter.  There’s some further reading at the foot of the article, but first, to get some perspective, let’s get our terminology clear, review the most prevalent public concerns and take quite a hard look at the benefits – both real and more far-fetched.

The most widely used 5G band in the UK will be 3.6GHz…
…5G is just as safe as 4G, 3G and GSM.
– Institution of Engineering and Technology

A quick canter through some confusing G’s

1G to 5G phones

Here 1G means ‘First Generation’ AKA Analogue ‘brick’ phones of the 1980’s, 2G (AKA ‘GSM’ or ‘Global System for Mobile Communications’), a typical Nokia from the late 1990’s, 3G, the first phones with really usable Internet connections, and today’s 4G, typified by a smartphone – Apple or Android. There was even a 2.5G and we mention 4.5G later.

The gifts of Heinrich Hertz, or a billion of them, come in the form of a Gigahertz (GHz), the frequency a thousand times the Megahertz we’ve had since VHF FM radio days.  1G to 4G phones have used various radio frequencies over the years, depending on operator and country, from 800MHz up to 2.6GHz, but the operating frequency used doesn’t directly affect the data speed as far as the user is concerned.  WiFi is sometimes confusingly termed 2.4G or ‘2.4 Gig’ or ‘5 Gig’, referring to bands – 2.4GHz (the same frequency as a microwave oven but a minuscule fraction of the power) and 5GHz: a less congested, shorter range band that has nothing to do with 5G: 5th generation mobile technology.

In the digital world we similarly have Megabits describing the speed of received data – whatever the technology that delivered it – and the Gigabit of your scribe’s home, and likely your office’s high speed Ethernet wired network. We won’t discuss the many flavours of WiFi on top of the frequency bands mentioned: A, B, G, N AC, AX… a story seemingly involving yet another G, until WiFi leapfrogs 5G by changing it’s letters to numbers, becoming WiFi 4, 5, and 6, and in future extending into a new 6GHz band.  That’s the GG’s corralled 🐴

The most popular 5G band, 3.6 GHz, is slightly higher than current ranges, the implication may be more base stations as range is slightly reduced, but other bands may be used to compensate. The 700MHz band for example, cleared in June this year (responsible for the loss of several HD TV channels from Crystal Palace), has yet to be auctioned off, but is earmarked by OFCOM for 5G.

Mobile emissions

If you are at all concerned about health effects, first check and understand the implications of the SAR value for your existing 2G/3G/4G phone, which have been published by manufacturers since the days of 2G when such concerns first arose – or better, stop using it now !

Unfortunately in addition to the above health concerns, the 5G cause has been muddied, and probably harmed by overzealous marketing, too many G’s and spurious claimed benefits – we prefer to keep to the tried-and-trusted recipe of ‘more & faster’, on which it certainly will deliver.