Questions tagged [bandwidth]
Questions about bandwidth used by various modes, theoretical questions about bandwidth, and questions about other amateur radio aspects of bandwidth.
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Natural dipole / monopole filtering
Word has it these antennas are broadband, however my calculations show one may not need FM / AM BCB wave traps if not operating around those frequencies.
I have run the script here for:
...
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How do these ceiling mount dome antennas work? Are these discone antennas or horn antennas?
The small cone is connected to the larger one. The coax center cable is terminated into the small cone and the coax shield into the larger outer cone.
The screenshots are from this video https://www....
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Is Gnuradio `file sink` data time domain data or frequency domain data?
When I enable file sink,I could save and read data of Gnuradio as below:
Questions as below:
1.Is the file sink data time ...
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Help synchronize on unknown frequency sequence
I am having trouble to synchronize on a frequency hopping pattern between an emitter Tx and a receiver Rx. More precisely, the ...
user21560
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What's the difference between LPF and BPF in context of bandwidth setting?
I'm used to simple RX/TX bandwidth configurations, on my VHF FM rig it's either narrow, normal, or wide. It seems to be much more complex on my new HF SDR rig, and the instructions don't say anything ...
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Why ferrite-core transformers are wideband while air-core are not?
While experimenting with end-fed antennas I've made two 1:49 transformers.
The first one has an air core, as shown in the article by John, M0UKD. This transformer doesn't even work as a transformer ...
2
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337
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Coupling Capacitor of an Antenna
I have a simple question about general meaning & importance
of the coupling capacitor in following part of
a simple receiver circuit:
Is it true that the proper reason why this
coupling capacitor ...
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3
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286
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Calculating SWR for a dipole
I have a dipole wire antenna that is tuned to 14.0 MHz so that it has an SWR there of nearly 1:1. Is there a mathematical formula by which I can compute the expected SWR for other frequencies? I would,...
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Does signal frequency affect the band width of SDR hardware?
I am new to SDR,already owned USRP B210 and start to learn Gnuradio.
I have follow question:
B210 has max bind width 56Mhz.When I use max sample rate to received signal,does the signal frequency(...
- 650
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Gnuradio bandwidth of sink cause signal frequency changed?
System is debian 10 with gnuradio 3.7.
untitled.grc create simple flow graph as below:
The only difference between 2 flows is bandwidth of gui sink,cause 2 ...
- 650
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How to Measure Bandwidth using just your receiver [closed]
How do you measure the two to one bandwidth of an antenna using a Bird Watt meter?
Tom Planer KJ9P
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Why do PSK modes have "bandwidth"?
My understanding of a naive PSK scheme is that you have some frequency(s), f(n), at baseband, and you modulate information by shifting the phase (what "point in time") the signal is at. Isn'...
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How do 'plumber's delight' type Yagi antennas have a bandwidth?
For Yagi antennas where the driven element is electrically connected to the boom like the parasitic elements, how can this function without diminished performance outside of the design frequency? In ...
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Labview Spectral Monitoring (USRP) - Bandwidth expansion and frequency change
I connected USRP (together with antenna) to my computer to receive some signals. For this purpose, I used the built-in module "Spectral Monitoring (Interactive)". Unfortunately I noticed ...
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