Re: 5.8GHz wideband video signal measurements
On Wed, Aug 28, 2024 at 03:59 AM, Hugen wrote:
zk-06
they look very interesting! but where can we buy them? I couldn't find a shop...
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best 73
de
i2NDT Claudio
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Dear all,
I am trying to extract data from TinySAsaver using the code from this repository: .
I connected my TinySA Ultra to a signal generator set to generate a frequency of 4 GHz. The signal is captured well on the TinySA screen, which shows a peak at 4 GHz. However, when I debug the code to see the value of the readings using TinySAsaver, I noticed that for each data point in self.data or self.data21 within the dataUpdated() function, the imaginary parts are always exactly 0, while only the real parts change. Each data point contains 3 core feature: frequency, real, image.
Is this expected behavior, or am I doing something wrong in my experiment? It seems strange to me that all of the readings have a 0 value for the imaginary part. I tried searching on this forum but couldn¡¯t find an answer.
Thank you for your support.
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Re: What are sweep speed hardware bottlenecks?
Furthermore, the implementation of digital filters combined with correction factors can reduce the sweep time by thousands of times. See Blake Peterson Spectrum Analysis Basics Keysight AN150
adri
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----- Messaggio originale -----
Da: Erik Kaashoek via groups.io < erik@...>
Inviato: 28/08/2024 08:36:28
Oggetto: Re: [tinysa] What are sweep speed hardware bottlenecks?
More expensive SA's use faster IF sampling and wider FFT filters.
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Designer of the tinySA
For more info go to
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Re: What are sweep speed hardware bottlenecks?
More expensive SA's use faster IF sampling and wider FFT filters.
--
Designer of the tinySA
For more info go to
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Re: What is the best way to store the TinySA Ultra when unused but near to radio sources ?
I run my Tiny SA through a charge cycle before storing. It may go 3 months without use. It sits in a drawer next to my Nano VNA with the antenna attached and collapsed.?
So far after 2 years, no problems of any kind.
I may use portables right here at the bench, VHF/UHF under 5 watt. My desk is 6 feet from my HF antenna tuner with random end fed wire antenna.
HF power usually under 100 watts.
When I have use for the Tiny SA or Nano, they are ready to turn on and use.
Cheers.
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Re: 5.8GHz wideband video signal measurements
We have made some LNAs for increasing the sensitivity at 5.8GHz, you can try using the zk-06 LNA module.
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Re: Short Vertical (Whip) Antenna Matcher
Thank you. I now have another reference chart to add to my library.? At 80, I need all the library references I can get. Memories not what they use to be. Again, thank you. 73's Clyde KC7BJE?
On Tue, Aug 27, 2024, 5:54?PM Geoff Peters - AB6BT via <AB6BT= [email protected]> wrote:
Not Andy but:
On 8/27/2024 4:58 PM, Clyde Lambert
wrote:
Hi Andy,
Where did you come up with -73dbm as to the signal level
equal to an S9 level?
Clyde KC7BJE?
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Re: TinySA not connecting to PC over USB
As they say, don't sweat the small stuff. You are probably the only one who will care about what you wrote. On Tue, 27 Aug 2024 19:31:11 -0400 "Tim Reimers KA4LFP via groups.io" <treimers95@...> wrote: Lol!!
Yes my error is recorded for posterity forever Jim!!!
Sad to say if you've seen my posts in other forms for amateur radio over
the years you've seen me ask plenty of other questions like that .... -- 73 -Jim NU0C
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Re: Short Vertical (Whip) Antenna Matcher
Not Andy but:
On 8/27/2024 4:58 PM, Clyde Lambert
wrote:
toggle quoted message
Show quoted text
Hi Andy,
Where did you come up with -73dbm as to the signal level
equal to an S9 level?
Clyde KC7BJE?
?
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Re: Short Vertical (Whip) Antenna Matcher
Hi Andy,
Where did you come up with -73dbm as to the signal level equal to an S9 level?
Clyde KC7BJE?
?
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Re: TinySA not connecting to PC over USB
Lol!!
Yes my error is recorded for posterity forever Jim!!!
Sad to say if you've seen my posts in other forms for amateur radio over the years you've seen me ask plenty of other questions like that ....
And when I find them again years later I go and whack my head on the wall and think "oh boy some guy is going to find that and meet me at a ham Fest someday and just stare.... and think to himself oh yeah this is that guy that asked THAT question on a forum...." And he will try hard not to giggle hysterically...
Morse Code: The original digital mode.
???
It's on the internet now. You're hosed. :D
On Mon, 26 Aug 2024 17:28:42 -0700
"Tim Reimers KA4LFP via " <treimers95=[email protected]> wrote:
> Not telling anyone at work about this. I'll never live it down!
--
73
-Jim
NU0C
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Re: Short Vertical (Whip) Antenna Matcher
It should work with any 50 ohm input receiver.? I have used it on my TinySA, but also on my ATS-20+? shortwave receiver.? Both units show improved sensitivity below 10MHz
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Paul KE2SI
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Re: What is the best way to store the TinySA Ultra when unused but near to radio sources ?
I store mine in the boxes they came in with no additional concerns.? As an amateur radio operator I have the legal output power on HF, 100 watts on 630-meters, and have as much as 100 watts on 50, 144, and 440 MHz.? No problems.
Dave - W?LEV
If you are worried about the SMA connector place Male to Female adapter or a 3dB attenuator on the input.
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Mike N2MS
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I usually keep my TinySA Ultra in a drawer with the default telescopic antenna extended and attached to the device, this is both for convenience and to avoid wearing out the antenna connector itself.
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I know that the surrounding radio signals reach the circuitry of the TinySA Ultra through the antenna even if it is turned off, and I was wondering if in the long run this might not put some kind of stress on the spectrum analyzer, diminish its performance, or promote its breakdown.
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For example, a few meters away from the TinySA Ultra are my Ubiquiti antenna from a radio link and an access point with a power output of 23 and 20 dBm respectively, which are detected transmitting at a level that can reach -40 dBm where I have stored the device.
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Does it make sense to take additional precautions, such as removing the antenna, or would these precautions be useless and?
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--
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Re: What is the best way to store the TinySA Ultra when unused but near to radio sources ?
If you are worried about the SMA connector place Male to Female adapter or a 3dB attenuator on the input.
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Mike N2MS
On 08/27/2024 10:50 AM EDT @glradio <decker.a70@...> wrote:
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I usually keep my TinySA Ultra in a drawer with the default telescopic antenna extended and attached to the device, this is both for convenience and to avoid wearing out the antenna connector itself.
?
I know that the surrounding radio signals reach the circuitry of the TinySA Ultra through the antenna even if it is turned off, and I was wondering if in the long run this might not put some kind of stress on the spectrum analyzer, diminish its performance, or promote its breakdown.
?
For example, a few meters away from the TinySA Ultra are my Ubiquiti antenna from a radio link and an access point with a power output of 23 and 20 dBm respectively, which are detected transmitting at a level that can reach -40 dBm where I have stored the device.
?
Does it make sense to take additional precautions, such as removing the antenna, or would these precautions be useless and?
?
_._,_._,_
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Re: What are sweep speed hardware bottlenecks?
How do more expensive analyzers solve it??
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Re: What is the best way to store the TinySA Ultra when unused but near to radio sources ?
OK despite my previous humour post, here's my own reality.
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I store it without any special precautions.
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I keep it on the original cardboard box along with the supplied telescopic antenna,
a pair of earbuds so that I can use the demod functions, and a 30db attenuator.
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I also have a small screen pen inside.
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The cal output has the yellow cap on the SMA to remind me what port is NOT the
input port.
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That's it really.
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I've converted about 6 others radio hams to use them, all very pleased and they come from
professional backgrounds.
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And as it so happens, I'm talking right now on a telnet session to a ham in North Carolina
that I know who's interested.
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73 de Andy
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Re: What are sweep speed hardware bottlenecks?
Yes
--
Designer of the tinySA
For more info go to
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Re: What is the best way to store the TinySA Ultra when unused but near to radio sources ?
A permanently attached male-female SMA protects the wear of the connector built into the board. I use it on the CAL output. The RF connector is permanently protected with a DC-BLOCK, which is what I have the most danger in my use
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Re: What is the best way to store the TinySA Ultra when unused but near to radio sources ?
I normally keep mine under my tin foil hat.
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But if there's solar flares about then I got a lead lined storage box just in case.
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- Andy -
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Re: What is the best way to store the TinySA Ultra when unused but near to radio sources ?
If you want obsessive an attenuator has a lot to commend it.? ? But I note they ship across the world with just a plastic cover on them so I guess that's enough to prevent damage on their uncharted journey and so probably a drawer??
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Clyde Lambert
Jim Shorney
Bruce Akhurst