#transmitters — Public Fediverse posts

@vfrmedia

Sweeeeeet.

#transmitters #Stentor #Netherlands #VHF #IpswichCommunityRadio #radio #FM #BroadcastEngineering

1985: me and my friend from highschool experimenting with 2 transistor home built FM #transmitters, later #Stentor kit from the #Netherlands, transmitting between 105,6/105,7/105,8 MHz (depending on how much TX had drifted) and putting 1km "not spot" into comms for British Rail and Reading Buses on their then new Stornophone #VHF radio schemes (which bizarrely had mobile TX on 150+MHz and base on 105-106 MHz (this portion of the band wasn't officially allocated to broadcasting back then!)

2025: working with my friends at #IpswichCommunityRadio doing it all legally on 105.7 - 50W TX power, stereo, digital soundprocessing, dynamic RDS, about 30-40km range, full telemetry on the transmitter and bandpass filter so we don't upset anyone else on the band.

Listening to Em's 80s Hour of Fun last night (she featured 1985 on the episode) reminded me of this (and that 40 years have passed since I started being involved with #radio!)

(en eindelijk na 40 jaar kan ik ook de andere kant van de bouwfolder (die was in het Nederlands geschreven) voor de Stentor lezen!)

#FM #BroadcastEngineering

Earth's Oceans Are Filled With What Scientists Are Calling ‘Dark Vessels’ | Satellite Mapping Reveals Extensive Industrial Activity At Sea
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https://www.earth.com/news/dark-vessels-most-industrial-fishing-activity-is-not-publicly-tracked/ <-- shared technical article
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https://doi.org/10.1038/s41586-023-06825-8 <-- shared paper
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https://dialogo-americas.com/articles/chinas-rampant-illegal-fishing-is-endangering-the-environment-and-the-global-economy/ <-- shared opinion piece
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#GIS #spatial #mapping #remotesensing #satellite #illegalfishing #tracking #AI #statesponsored #deeplearning #darkvessels #GPS #transmitters #AIS #turnedoff #maritime #marine #vessels #foodsecurity #sustainability #global #globalsecurity #transponders #smuggling #illegal #commercialfishing #transport #energy #oil #gas #shipping #resources #Sentential #Sentential1 #spatialanalysis #spatiotemporal #realtime #model #modeling #neuralnetwork #accuracy #radar #SAR #cargoship #infrastructure #ocean #worldwide #humanrights #MPAs #coast #coastal #EEZs #tankers #industrial #sea #windfarms

#DIY #SmartHome :
Here I describe how I implemented it at my home. I have used #433MHz actuators and #transmitters .Of course, another radio system can be used, the steps remain the same

1) Buy simple radio sockets or #actuators on 433MHz basis

2) Get a 433MHz #gateway

3) Get a simple and cheap android #tablet and mount it flush to the wall

4) Install the app on the wall tablet and on your devices. I use #PowerSwitch

5) Add your actuators to the app, create rooms, #scenes , timers, and more

Finally #FiguredOut why the remotes for the #GarageDoorOpener stopped working. Don't put #LEDBulbs into the opener, they must have been interfering with the signals from the #transmitters #NowIknow

Finally #FiguredOut why the remotes for the #GarageDoorOpener stopped working. Don't put #LEDBulbs into the opener, they must have been interfering with the signals from the #transmitters #NowIknow