[YARDStick] OOK transmission is not in the expected size

[Hakan Tolgay]

Samy,
d.lowball(0) worked like a charm. Thanks a lot for the advice.

Cinaed,
Thank you too. I actually know how pwm works but my problem was a bit
different. Yet, you are right about running rfcat as root is not a good
practice. Thanks

On Wed, Jul 19, 2017 at 11:46 AM, Samy Kamkar <samy at samy.pl> wrote:

> Ensure preamble, manchester, sync word, CRC, whitening and FEC are off --
> easy way is to `d.lowball(0)` first, then run your config functions, then
> transmit.
>
> On Wed, Jul 19, 2017 at 1:30 AM, Hakan Tolgay <hakantolgay at gmail.com>
> wrote:
>
>>
>> Hello all,
>>
>> I am new to the rfcat and trying to learn it via trial and error.
>> However, I couldn't find an explanation for the following behavior.
>>
>> I have been trying to transmit some binary data such as 10101010 which is
>> AA in hex. When I did that with the following commands, I observe more than
>> 8 bits of data. You can find the links of both spectrum dump and the signal
>> recording (as sound file) below. Please tell me what I don't know and what
>> I am missing. Thanks
>>
>>
>> sudo rfcat -r
>>
>> >>> d.setFreq(433000000)
>> >>> d.setMdmModulation(MOD_ASK_OOK)
>> >>> d.setMdmDRate(int(1.0/0.000550))
>> >>> d.RFxmit("\xAA")
>>
>> Transmission recordings:
>> https://drive.google.com/drive/folders/0BxtkZc08yz6mc0tlRS1Y
>> bjgtUEU?usp=sharing
>>
>> Thanks
>> Hakan
>>
>>
>>
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>>
>>
>
>
> --
> @SamyKamkar <https://twitter.com/samykamkar>
> https://samy.pl
>
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