Thank-you Marcus the Audio Source is happy with 2 channels now.
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Hi:
Sorry for the late replay... The intel pc call filter.firdes.low_pass
with the same values but return 768 proper float values, not like the
's on the AMD pc.
Tried to debug with "nemiver /usr/bin/python2.7 -u
/fm_receiver.py" and the breakpoint at firdes.cc line 100 witch
get triggered and I
Hello Everybody,
Could anyone please try to explain to me why I am seeing dB values instead
of dBm in the spectrum analyzer GUIs such as QSpectrumAnalyzer or spectrum
scan programs such as gr-scan or hackrf_sweep.
Because when I inject a signal with -15 dBm power using 20 dB attenuator (no
loss
Marcus explained it better than me in your previous email, but in general,
those SDR devices aren't calibrated devices, as in you (the user) can't
infer from the sample value the signal power, so the apps (e.g.,
QSpectrumAnalyzer) can't tell you anything about dBm (power) values, only
dB values rel
Hello Guys
I have a flowgraph attached where I'm trying to generate BER curves for
different transmit gain values. Right now, I have gui slider that allows me
to adjust the gain values, however, I would like to know if it's possible
to have the gain values adjust automatically by changing the pytho
Thank you for your detailed message. Please correct me if I am on the wrong
path.
I am injecting 802.11g signal using Vector Signal Generator at different
power levels (0 dBm, -5 dBm, -10 dBm, -15 dBm and -20 dBm) using 20 dB
attenuator. After running gr-scan with RF gain 0 dB option at the first
Hey,
as has been said previously, it depends on the type of signal you are
observing how you would need to characterize and measure its power.
For example, your signal will change over time depending on your payload
data which you need to consider. You would also need to consider the
bandwidth of
When you say constant tone, you mean some sinusoidal signal with fixed
frequency using Anritsu vector signal generator? Any suggestions generating
this signal with VSG?
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Also, how could I measure power? The program is giving some strange dB
values...
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Discuss-gnur
-20 dBm is a pretty strong signal. You're probably over driving your SDR
into compression. I would use a larger value attenuator or reduce the
levels from the signal generator.
Ron
On 06/21/2017 08:55 AM, GNUBeginner wrote:
Thank you for your detailed message. Please correct me if I am on the
Yes - he meant a constant tone, a simple sinusoidal signal with fixed
frequency and amplitude (Acos(wt)).
And you can't measure the power directly. What you can measure is the graph
(function) between the injected power (as determined in your signal source)
to those strange dB values. After you ge
How could I generate this simple sinusoidal signal with fixed frequency and
amplitude using Anritsu MG3710A?
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You can get a soft failure by overloading a receiver input, let alone a hard
failure. If you are testing a $15 dongle, no big loss. If you are testing a
real receiver, I would check to see what is the maximum allowable input power.
Using a signal generator is a matter of RTFMing.
Original Me
I am already aware of what the maximum allowable receiver power which is -5
dBm. That is why I am starting from 0 dBm with 20 dB attenuator before
injecting it to the HackRF One.
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