Dear all,
I'm trying add two streams together before sending to usrp_source, suppose
they are signal A and signal B, signal A comes from burst transmission, so
there exits gaps between two packets, while signal B is the real streaming
data. I tried to use blocks.add_cc() function to add them toget
Hi Guys,
I am trying to implement a simple block in python but it seems that
stop and start is never called when I implement them. The bare bones
python code would be this:
class test(gr.basic_class):
def __init__(self):
gr.basic_block.__init__(self, name="test", in_sig=None, out_sig=
Hi everyone,
I have bought a new RTL-SDR dongle USB. The dongle had success receiving the
continuous RF signal from function generator (FG) directly. I set the frequency
and amplitude are 53.7 MHz and 1 mVpp. I connect the FG to the dongle directly
and from the dongle, I connect to the USB port
Yes, for some student and hobby experiments we need cheaper SDR.
I like the idea of OpenSource-Hardware. Material cost is usually
not too high. And it's possible to modify designs, improve it,
strip down for cheaper variants ...
A good toy for hardware-experimenting and to gain experience in
elect
The conversion error of clocks should be negligible compared to
audio sample rate as we are dealing with
microseconds timer.
No. I'll stop contributing to this discussion now. The average sound
card has a 25ppm clock accuracy, according to design specs of Texas
Instrument audio ADC/DAC ICs.
>>Yeah. But that doesn't help at all, since clock recovery of any digital
>>receiver will give you samples resampled to the transmitter's clock...
>>Anyway, notice how you say "roughly". Now, compare that "roughness" to the
>>"roughly the same" transmitter and receiver audio clock.
>>You're at le
Hi Seref,
You'll have to explain what exactly you did. Where's the "square_ff"
coming from?
On 10/04/2017 05:00 PM, seref ay wrote:
Hi everyone,
I am using gr-iee802-11 transceiver by Bastian Bloessl. The flow graph
is working fine, but when I try to add a new block with gr_modtool ( a
si
Hi everyone,
I am using gr-iee802-11 transceiver by Bastian Bloessl. The flow graph is
working fine, but when I try to add a new block with gr_modtool ( a simplle
block that squares a floating constant ) then it throws this error:
"AttributeError: 'module' object has no attribute 'square_ff'" . Wh
Hi,
I have to come back with this question as I didn't receive an answer
the first time.
Is there any better way to demodulate 4FSK than using a constellation receiver?
Right now, my RX path is FM demod -> M&M clock sync -> constellation
decoder. It does seem like a non optimal way of recovering 4
