These are duplex systems, it seems? What are the real-world specs, would they be able to reliably communicate over a distance of about 20 meters? Speed is not an issue. I was going to use cheap routers like TP-Link WR703N, but looks like they have very poor wifi coverage. On Sat, Sep 27, 2014 at 10:49 PM, Allen Mulvey wrote: > nRF24L01+ modules at 2.4 GHZ are getting popular. I have been using them = for > local telemetry for a number of months. You can get really cheap rip-offs= on > eBay to experiment with. I believe you can use the first 83 channels in = the > USA. Logitech uses this band for its wireless keyboards and mice. > > With rubber antenna: > http://www.ebay.com/itm/NRF24L01-PA-LNA-SMA-Antenna-Wireless-Transceiver-= com > munication-module-2-4G-1100m-/310651702557?pt=3DLH_DefaultDomain_0&hash= =3Ditem48 > 5448cd1d > > With PCB antenna: > http://www.ebay.com/itm/10PCS-Arduino-NRF24L01-2-4GHz-Wireless-RF-Transce= ive > r-Module-New-/170819069271?pt=3DLH_DefaultDomain_0&hash=3Ditem27c59c2557 > > Allen > >> -----Original Message----- >> From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] On Behalf > Of >> meshka7 >> Sent: Saturday, September 27, 2014 12:50 PM >> To: piclist@mit.edu >> Subject: [EE] Experimenting with RF modules >> >> Got two RF modules off ebay. One for 433 MHz and another for 915. My >> intention was to experiment with RF and remote control. >> >> Looking into band allocations in the US, I found that these frequencies > fall >> into the amateur bands. Wikipedia shows that 433 is for ISM but only > within >> Region 1, so I guess I'm left only with 915. >> >> Am I correct here? What bands do people generally use for experimenting = or >> making home made gadgets that use RF and that won't be sold commercially= ? >> >> Thanks! >> >> >> >> -- >> View this message in context: > http://microcontrollers.2385.n7.nabble.com/EE- >> Experimenting-with-RF-modules-tp192230.html >> Sent from the MicroControllers - PIC mailing list archive at Nabble.com. >> -- >> http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive >> View/change your membership options at >> http://mailman.mit.edu/mailman/listinfo/piclist > > > -- > http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist --=20 KPL --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .