You may be able to tell that today's focus has been on removing legacy from the network. Here's a classic from days gone by... A Nokia 1 x TRX GSM1800 PrimeSite, installed as a test BTS in an Orange UK switch site. #2G #GSM #historyoftechnology

Walking through the outskirts of Reading this evening and spotted a bit of #2G history and now #industrialarchaeology in the form of a redundant Orange #GSM lamp-post micro-cell site. These sites were typically deployed to add capacity density to an area. #historyoftechnology

Nice collection of #2G #GSM devices on display at the excellent NorthWest Computer Museum @joekay66 @SpinnersMill - This museum is excellent, well worth a visit, loads of retro computing, many working, including some classic arcade games 💻🖥️⌨️🖱️🎮🕹️👍 #historyoftechnology

Orange transmission cab from 2012, during the early days of Ethernet radio backhaul testing. Unit at top is power distribution for Forem mast head amplifiers. Below this are NEC microwave radios, the bottom unit, below DDF & ADF, is the radio on test #2G #GSM #historyoftechnology

A focus on 900 MHz GSM on this tower - Vodafone at the top with O2, previously Cellnet, below. Site also supports Airwave TETRA along with other radio services. #2G #GSM #historyoftechnology

The inner workings of a Siae B Series point to point digital microwave radio transceiver - used by Orange as "high-order" transmission links, meaning they carried Ater interface traffic, and later Gb was added, from distribted BSCs to MSC sites #2G #GSM #historyoftechnology

The cheapest piece of test equipment I've ever owned, but wow did this save me a lot of time over the years... Ideal for checking which is the transmit/receive port on a 75 ohm E1 coaxial circuit, as used throughout GSM for transmission connectivity #2G #GSM #historyoftechnology

Early One2One dual polarised DCS1800 / GSM1800 antennas with low noise receiver pre-amps (mast head amplifiers / low noise amplifiers) and microwave radio backhaul #2G #GSM #historyoftechnology

A heavily loaded tower which along with a 3 sector site for the primary operator (one2one/T-Mobile), also supports an omni installation, maybe Orange? Plus lots of microwave radio links so clearly an important transmission hub too... #2G #GSM #historyoftechnology

What a journey GSM has been, the innovation in handset design, prior to the smartphone form factor (which in itself is remarkable and clearly changed the game). #2G #GSM #historyoftechnology @nokia

The Bird Thru-Line Watt Meter was an essential piece of test equipment during the early days of GSM. Seen here measuring transmit power from an Ericsson RBS205. Reversing the central 'slug' resulted in a VSWR measurement. A very useful tool... #2G #GSM #historyoftechnology

An Orange Swann B2-3 lattice tower with One2One/T-Mobile site share. Both GSM/DCS1800 but note the different sector orientations. Photo from Feb 2000 #2G #GSM #historyoftechnology #industrialarchaeology