My environment is in home.   Lots and lots of interference with home and=20
neighbors WIFI (my 2 AP's and the next door neighbors 4) & blue tooth=20
devices, metal cabinets and wooden walls/floors.  The master device is=20
on the second story in one corner of the house and the slave is in the=20
other corner on the first floor, about 75 feet away.  Specifically=20
chosen to cause a "typical" worst case setup.  Preliminary testing has=20
the range limited to less than 75 feet (25 meters) with the actual=20
number probably closer to 50 feet (16 meters).

   I need to setup a controlled test sequence, maybe early this week,=20
and I will report back.  So far I am disapointed with the results but=20
controlled testing is in order before I jump to any conclusions.

On 12/15/2013 7:35 PM, James Cameron wrote:
> I'm curious to know how far you have pushed the range, and what sort
> of environment you are operating in.
>
> On Sun, Dec 15, 2013 at 09:00:19AM -0800, Phil Keller wrote:
>> I am running into a problem with my setup of a nRF24L01+ module.
>>
>> I have a  system that has two modules, one that acts as the master and
>> another acting as a slave.  The master calculates some data and creates
>> a small message of 6 bytes and broadcasts it once every 5 seconds.  The
>> slave listens for a packet and displays the information on an LCD.
>>
>> If I set the data rate to either 1 or 2Mbps the system operates as expec=
ted.
>> If I set the data rate to 250Kbps the master node OBSERVE_TX register is
>> incremented with each transmission.  The slave node appears to be happy
>> in that the data is correctly displayed but the masters "appears" to not
>> be receiving the ACK.  Replacing both modules did not have an effect.
>>
>> I would like to operate at 250Kbps since I will be pushing the range
>> limits and the slower data rate will help.  By the way I am using the
>> nRF24L01+ with PA and LNA.
>>
>> Has anyone run into this problem before?  Is there some other change
>> that I need to make when I operate at the 250Kbps data rate?
>>
>>     Thanks
>>     -Phil-
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