#900mhz — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #900mhz, aggregated by home.social.
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It’s been a while since I last played with this, but I’m wondering if someone has a recommendation for a really good #SDR - receive only, a mix of #hamradio, #CB, #APRS…. Something with wide bandwidth so I could record say, all #FMRS or #GMRS channels at once, or listen to the whole #900Mhz #ISM band for #LoRA and #Meshtastic chatter.
I’d probably run it off a #RaspberryPi 500, so USB is preferred rather than PCI-E.
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We've filed a comment in opposition of the reallocation of the 900MHz band in the US.
You're running out of time to have your voice heard, file a comment on FCC docket 24-240 today!
https://www.fcc.gov/ecfs/filings/express?proceeding%5Bname%5D=24-240
#tech #foss #meshtastic #lora #900mhz #fcc -
"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
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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.
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@shk It is pretty magic. In the lean days just after the #OG #dotcomboom I was at an #embedded company for a year, and I would have done just about anything for #ble instead of our home-grown #900mhz "thesis-style" protocol. Being able to follow a tag between the sensors is 100% one of the main products we brutalized ourselves trying (and failing!) to build. Now, it costs $20 for the tracker and $5 for the sensors, on my porch overnight, with batteries that last a year.