Möglich dank abgeschlossener GSM-R-Modernisierung: O2 Telefónica durfte 900 MHz-LTE entlang der Schienen aktivieren. 2 000 Standorte wurden umgebaut, 8 000 per Software freigeschaltet. Nun versorgt der Anbieter 28 000 km des 33 000 km Bahnnetzes.
#O2Telefónica #5G #DeutscheBahn #Mobilfunk #Bahn #900MHz #Ausbau #LTE #Gleise #LTEFrequenz

https://www.lte-anbieter.info/lte-news/o2-telefonica-aktiviert-900-mhz-entlang-der-schiene

https://www.rfidjournal.com/news/fcc-considers-alternatives-to-satellite-based-gps-for-900-mhz-bandwidths/223090/

https://meshtastic.org/blog/meshtastic-opposition-to-nextnav-proposed-changes/

https://locationbusinessnews.substack.com/p/spectrum-dispute-heats-up-as-ibtta

#nextnav #meshtastic #900mhz #UHF #RAIN #RFID #900mhzband #ISMband #part15 #FCC #radio #33cmband #33cm #uspol

"NextNav’s Callous Land-Grab to Privatize 900 MHz"

https://www.eff.org/deeplinks/2024/09/nextnavs-callous-band-grab-privatize-900-mhz

#AmateurRadio #HamRadio #hamr #meshtastic #900mhz #nextnav #EFF #lora #LoraWAN #frequency #FCC #GPS

Inside the TX SYNTH module from a Matsuhita FRM1145 NMT900 mobile phone.
So, it should tune around 880 - 915MHz or so.

#900MHz #NMT900 #surplus

The RF heart of an old CT1 analog cordless phone.
So those 3x dielectric filters are all it has for a duplexer.
2x LMX1501 PLL's for TX and RX oscillators.
MC3372 FM IF on the receive side.
Maybe I'll bother beeping it put some day.
I do have 950-1400MHz VCO's in that case... 😁

Sure, LMX1501 is rated to 1.1GHz only, but so is the MB1501 PLL and MB501 prescaler used in tons of Nokia equipment and those push fine to 1300MHz hamband.

#surplus #23cm #900MHz