OFCOM - sub-8.3kHz and around 73kHz in the UK

You may recall that several weeks ago I contacted OFCOM to clarify (1)  the legality of no-licence operation in the UK below 8.3kHz (band is unallocated) and (2) operation around 73kHz with limited ERP (licence exempt). 3 emails later, I have STILL to receive a response. I wrote again today hoping for a reply this time.

The same issues are to be raised by the RSGB on March 13th at their OFCOM liaison meeting.

It now looks like the address I was given was a DEAD email address  Today I contacted Spectrum.Licensing@ofcom.org.uk  and hope, this time, to get an answer.

Revised UK Frequency Allocation Chart

From the OFCOM email newsletter today:

UK Frequency Allocation Table

Ofcom has published a revised UK Frequency Allocation Table. This details how various frequency bands are used in the UK, and which bodies are responsible for planning and managing them – including frequencies assigned to individual users or installations at particular locations. It also shows the internationally agreed spectrum allocations of the International Telecommunication Union. 

The table shows frequencies below 8.3kHz are unallocated in the UK but there are some footnotes in the ITU frequency allocation table that require administrations to ensure no harmful interference to services above 9kHz and to notify other administrations about research below 9kHz.

My understanding is therefore that below 8.3kHz the UK administration "does not care" what happens as long as interference to allocated services is avoided. This is my interpretation and not a legal statement.