Hello i was wondering if it's Possible to make a NRF24L01 repeater i guess a mash network of some kind? my brother between my brothers house and my fathers house both of them live in the country area and my father land almost 2/4 mile long and my brother house is right next to my father house after his land so almost a mile total. but the NRF24L01 don't reach that far light of sight i tried so there a way to make a wireless repeater between them so no matter where on there land they are at it will work they can talk to each other?
Sure, anything's possible, but you might have to code it yourself. 
Have you tried the ones with antennas? They have much bigger range.
The one with the antenna but range not long enough. Need some way to repeat the signal somehow to reach from one place to another. What I mean is I have the one with the antenna on it.
2.4GHz isn't a great band to choose for long-haul comms, something with a longer
wavelength will have much more range - perhaps ISM 315MHz or 433MHz range
(the RFM22 transceiver modules handle that).
You could create some sort of mesh-network to span the gap at 2.4GHz but you
may need several steps to get there.
However.... If you get a couple of parabolic reflectors and have proper line-of-sight
between the nRF24L01 end-stations you could massively extend the range. Such an
antenna can have massive gain at each end, perhaps 30dB+
Hey MarkT thank you i was thinking about putting a bigger ext antenna on it i have some old wifi antennas that are 20db gain antennas that use the same connector maybe that will do the trick for the range.
okay looks like the longer antenna with the higher gain works more ran but still not enough between my brothers house and fathers house is 3,865 ft we used digital laser measuring tape my dad uses at his work. the ran we now got from the new antenna are 2,108ft but only have one antenna with the higher gain so if i can find another one i think it might work.
No experience, but 4000feet = 1.2KM so this thing might do it
or
or with a self made attenna
problem is i have them all ready i don't get that range. i get half maybe less then that for some reason.
other price range, states 5KM = 15000 feet ...
or - http://www.digi.com/pdf/ds_xstream.pdf - 20KM so if you only got 1/10 th you should be OK 
or - http://www.g3ti.com/pdfs/G306C_DataSheet_2010-02-16.pdf ....
not seen reviews yet (but interesting toys!)
robtillaart thank you i will look into them do they work the same as the nrf24l01 modules or are they different in programing?
no experience (unfortunately), I just exercised my google muscles
There's a basic equation used when doing range calculations for radio links:
Real world ranges are more complicated, but this is the starting point for designing
a link.
[ Of course you need to know your transmitter power, receiver sensitivity....
Note the squared dependence on lambda - so all things being equal
315MHz is 58 times more efficient than 2.4GHz, leading to about 7.5 times the range.
You can recast this equation in terms of the antenna effective areas, then the lambda
drops out and you have a form that's independent of the waveband. The it works for
light/lenses as well!
MarkT thank you for that information. i have some of the 433mhz Rf modules problem is they are only one way a transmit and receive and the rang on them are not as good at the nrf24 modules that I'm currently using this in this project. but i think if i get another 20db gain antenna for the second hand set setup I'm trying to build then i think the rang would be where i would like it at.
No, you don't want those modules, get transceivers like the RFM22 for the ISM bands.
MarkT why get RFM22 for the ISM bands? what would that do? okay put a side i stick with the nrf24l01 modules for the moment i still would like to setup some kind of repeater network station to cover some areas between my fathers hour and brothers house but get some more range out of it is there a way to do a i guess mobile repeater station in between to pick up the 2 signals like a wifi repeater how it can extend the range of a wifi can something like this be done with the nrf24l01 modules? to cover a bigger area?
A repeater isn't difficult to make but if you can get a big enough antenna it's much easier to go down that route.
To make a repeater you just need a device which listens on one address and retransmits everything that arrives on another address. I imagine the biggest problem will be power. What will you power it with? Is there a mains connection half way between the two houses?
The NRF24L01 uses roughly the same frequencies as WiFi. You can get all sorts of long range Wifi antennas or even try making one yourself.
Transceivers allow many links to coexist on the same band, give packetization,
checksums/error detection, choice of baud rate / modulation and carrier frequency
and are basically radios. Think of the separate OOK TX and RX modules as
crystal sets by comparison.
hello thank you i understand the nrf24l01 module works as it's on the same 2.4g wifi range but i was wondering if i can build something with a couple of nrf24l01 modules that i have the antennas on it to extend the range i would like to get a lot of range longer antennas on what i have now helps with the increase db antennas but still not enough. so if i can make a repeater between them and extend the range more then i think that be a start and maybe setup my own little mesh network repeater.
josephchrzempiec:
so if i can make a repeater between them and extend the range more then i think that be a start and maybe setup my own little mesh network repeater.
OK, so grab three modules and start coding...!