Re: Uhf TV monitoring, Antenna testing
Is there some type of overlay to see the Tv channels portion of the spectrum? -- Joe-NP3AR
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Jose Cruz
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#5840
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Re: Uhf TV monitoring, Antenna testing
This is where the typical CATV band pass filters come in very handy, low loss and very steep skirts. They are well documented and cost pennies.
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John Cunliffe W7ZQ
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#5839
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Re: Uhf TV monitoring, Antenna testing
The following Is an addition to the comments made by Erik and Jim Allyn regarding the measurement of Cable TV signals in 75 ohm systems with the TinySA: The typical CATV system in the US, carries up
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Ted Chesley
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#5838
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Re: Saving Presets for Signal Generator use. Instructions, please.
#feature_request
Mark, It's currently not possible to save presets for the generator. Good suggestion though! -- ------------------------------------------ For more info on the tinySA go to https://tinysa.org/wiki/
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Erik Kaashoek
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#5837
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Re: Uhf TV monitoring, Antenna testing
It may very well be dangerous to connect your tinySA directly to your TV/data cable.? TV channels typically run around 0 dBmV per channel, which is only 13 nanowatts.? You can run a lot of those
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Jim Allyn - N7JA
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#5836
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Saving Presets for Signal Generator use. Instructions, please.
#feature_request
Saving Presets for Signal Generator use. Request:? If there are instructions somewhere on the web, on how to set PRESETS for the TinySA Signal Generator frequencies, please post a web url for that.?
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Mark W2OR <reston2010mm-orders@...>
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#5835
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Re: Uhf TV monitoring, Antenna testing
Hello, A few notes: 1) TV, CATV and SAT signals should never harm the input section of a Spectrum Analyzer. The signal level is, as Erik already mentioned, well below -40dBm. 2) Note however, that
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Vitor Martins Augusto
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#5834
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Re: Interesting use for a dummy load
Hi Dave, coupling of the RF will be variable according to frequency, length and position of the tinySA antenna, so even when doing a relative measurement, you may have a big difference in levels. See
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Luc ON7DQ
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#5833
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Interesting use for a dummy load
Not having a suitable attenuator to hand, I found that a dummy load radiated enough RF for the tinySA to analyse if held close enough. I'm not interested in the exact amplitude of the harmonics, just
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Dave Horsfall
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#5832
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Re: Uhf TV monitoring, Antenna testing
Normally TV signals should be below -45dBm on the cable so connecting to the high input is not a risk. For many other signals an attenuator is recommended. Simple guideline is to keep the high input
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Erik Kaashoek
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#5831
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Re: Uhf TV monitoring, Antenna testing
It does not make an important difference, only the indicated level is some dB wrong Yes Nothing special, as long as it connects to SMA it should work. Yes, FM broadcast is on the cable in Europe.?I
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Erik Kaashoek
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#5830
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Re: Uhf TV monitoring, Antenna testing
I saw the video you suggested. However, I have a question. In other videos I have seen they say that an attenuator is required on the high side. Is that correct, or can direct testing of tv signals be
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Jose Cruz
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#5829
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Re: Uhf TV monitoring, Antenna testing
I made a comment on your above linked youtube video, but as a relative newbie to RF, I have some questions... When using this for TV antenna aiming or just for inspection of the signals on a cable TV
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spiff72
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#5828
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Re: Uhf TV monitoring, Antenna testing
Sorry I sent the wrong message. Sep 30, 2021 2:09:40 AM Jose Cruz via groups.io <latinhawk@...>:
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Jose Cruz
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#5827
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Re: Uhf TV monitoring, Antenna testing
My question is what is the status of my order? You snswered me with something else. Sep 30, 2021 1:57:40 AM Erik Kaashoek <erik@...>:
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Jose Cruz
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#5826
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Re: Uhf TV monitoring, Antenna testing
Look here: https://www.youtube.com/watch?v=Vn2da_UBuBE Its using cable for demonstration but the type and strength of signals should be comparable when using a good antenna Towards the end it is shown
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Erik Kaashoek
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#5825
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Uhf TV monitoring, Antenna testing
New here. Can't find where to add my callsign. I'm in the process of replacing my tv antennas.I receive signals from different direction and want to use the TinySA when it arrives to point my antennas
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Jose Cruz
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#5824
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Re: FM deviation measurement (narrow and wide)
Side cutters are a much more definitive, and emotionally satisfying, fix! 73, Stay Safe, Robin, G8DQX
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G8DQX list
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#5823
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Re: FM deviation measurement (narrow and wide)
Test all your cables and mark the power only ones with a sharpie pen. I need to load the proper drivers I believe. Kind Regards, Dave Dave Reiser Phone: 301-216-5394 Mobile: 301-802-1929 Email:
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DAVE REISER WA3TRS
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#5822
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Re: FM deviation measurement (narrow and wide)
I had this problem and it turned out my USB cord that I was using was actually not made with a data line. And apparently it was just for charging. Change chords and fixed my problem.
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keverett
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#5821
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