New 134GHz record

Persssonally, I found optical comms easier than microwaves as all the testgear and kit could be easily home made. According to Southgate News a new mm record has been set in Germany. They must be keen!

See http://www.southgatearc.org/news/2020/january/new-iaru-region-1-record-on-134-ghz.htm#.Xi7uK_KTLnE

CB radio

When CB was first legalised in the UK (1981?) I gave it a try and it was very busy. Since then, I have not really used it.

Somewhere (just found them!) I have a pair of CB handhelds. These are crystal controlled, single channel, radios. I seem to recall a 2-way QSO over about 1km with these back-to-back on their whips. This was a very long time ago!

In recent years I believe one can now legally use AM and SSB in the UK on CB. Like repeaters, I suspect 27MHz CB is much quieter now.

My question is does any reader use CB these days? 

At one time it was quite popular with farmers on tractors locally. I suspect with licence free 446MHz gear (and the equivalent in other countries) use of CB channels has nose-dived.

Gear is low cost, so maybe I should give it another try sometime. At one time there were plenty of UK FM CB radios converted to 10m FM. This was popular with many. At one time 10m FM was quite busy locally.