Re: Hunting Spurious Emission at 154 MHz
I discovered a strange signal on 3.846 MHz in the 80 meter band. I asked my ham friends around town if they could hear it. They all answered no. ?So I went out with a large loop and DF’d the signal
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W5CDT
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#19822
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Locked
Re: Help ! Calling Ghostbusters.
Is there interference around the ISM frequencies:
https://en.wikipedia.org/wiki/ISM_radio_band
My Toshiba microwave oven interferes with the 2.4 GHz wifi. My manual mentions radio interference when
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Mike N2MS
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#19821
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Re: ?Red paused“ information, wenn running tinysa-app on windows
I suppose that the tinySA screen is paused as long as remote access via the software takes place
73 Joe
-----Ursprüngliche Nachricht-----
Von: [email protected] [mailto:[email protected]] Im Auftrag
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df2jp_1
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#19820
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Re: ?Red paused“ information, wenn running tinysa-app on windows
The tinySA automatic scanning is stopped, hence the "paused"
Instead, the tinySA-App send scanraw commands, possibly with much higher resolution, and you see the green line of the progress of the
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Erik Kaashoek
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#19819
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Re: Advice on connecting TinySA Ultra to audio amplifier
Yes
--
Designer of the tinySA
For more info go to https://tinysa.org/wiki
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Erik Kaashoek
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#19818
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Re: Advice on connecting TinySA Ultra to audio amplifier
Thank you! ?To be clear, connect a 20 dB attenuator (from Amazon) to the RF output, then a wire (SMA - > BNC with alligator clips or SMA bare wire coaxial cable - also Amazon) red connected to FM
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Oden, Jon David
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#19817
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?Red paused“ information, wenn running tinysa-app on windows
?Hi Erik,
I am running the tinysa-app on windows, everything runs well, but starting the continuous scan in the app, on my tinysa I see the ?red paused“ info in the infobar. What does it mean?
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Hartmut
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#19816
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Re: Testing coax cable
Yes, the TinySA is a spectrum analyzer. The NanoVNA is a network analyzer.
The NanoVNA can be used to measure impedances of coax, the rate of loss of
coax over a frequency range, SWR. It has a TDR
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Zack Widup
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#19815
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Locked
Re: Help ! Calling Ghostbusters.
As others have rightly pointed out, your system is the very definition of RF Hell, but let me throw in my two cents.
1) You have put too much faith in wifi. Too many devices, perhaps too many
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AGA001
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#19814
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Re: Testing coax cable
Sounds more like a job for a NanoVNA!
David
--
SatSignal Software - Quality software for you
Web: https://www.satsignal.eu
Email: davidtaylor@...
BlueSky: @gm8arv.bsky.social, Twitter:
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David J Taylor
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#19813
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Re: Advice on connecting TinySA Ultra to audio amplifier
For protection of the tinySA I would recommend to use a 20 dB attenuator directly connected to the tinySA RF SMA and ALWAYS leave it on.
Connect the outside of the attenuator SMA connector to chassis
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Erik Kaashoek
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#19812
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Re: Input RF switch fault found on TinySA ultra
WARNING !!!
The suggested method of getting off the bad chip is very rude and dangerous!
This may be practical with bigger chips, but not with so tiny ones!
Not knowing if traces cross right below
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Rainer Hantsch
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#19811
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Advice on connecting TinySA Ultra to audio amplifier
I would be thankful for any advice on how to connect my TinySA Ultra to the amplifiers I am trying to repair. ?Currently working on Magnavox Chassis # R204 ?Using a RF Signal Generator is relatively
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Oden, Jon David
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#19810
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Testing coax cable
Hello,
I have a tinySA Ultra+ and I would like to measure a 50ohm coax cable, anyone who can help me out how to do this? I guess you can use the CAL output in combination with the RF input? I would
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kox.jeroen@...
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#19809
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Locked
Re: Help ! Calling Ghostbusters.
I don't know for sure, but this is built to California earthquake safety standards, and most of the materials are flexible, ie. wood. The studs are wood. The roof is composition asphalt shingle, not
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madbrain
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#19808
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Locked
Re: Help ! Calling Ghostbusters.
Could you please be more specific ? Do you mean within radio range on the frequency they are supposed to operate on, at their set transmission power, through all obstacles that might be present ?
If
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madbrain
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#19807
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Re: Hunting Spurious Emission at 154 MHz
It is KHz it is likely SMPS noise. A signal in the MHz range you describe is more likely leakage from a reference crystal oscillator on the motherboard or a plug in card.
"Peter Finch via groups.io"
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Jim Shorney
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#19806
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Hunting Spurious Emission at 154 MHz
I was exploring the VHF High public service bands (150 - 162 MHz) on my tinySA spectrum analyzer using the waterfall display. I noticed a very strong, very narrow, very clean unmodulated FM carrier at
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Peter Finch
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#19805
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Re: Enhancement Requests: File Management Sort By Name and Rename
I received a couple of PMs requesting the PowerShell script. It is attached. It only reorders the .psr files and leaves all other files alone. All the normal cautions apply:
* Use at your own risk.
*
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Peter Finch
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#19804
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Re: Input RF switch fault found on TinySA ultra
Greetings,
I think the use hot air removal in this case, considering all the near by components, could be risky unless you happen to have the proper size hot air tool hood that fits the chip and
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Tom VA7TA
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#19803
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