Re: How to focus TinySA onto a narrower band
I purchased a TinySA Ultra which meets my needs and is still quite cost effective! It has the 200Hz RBW needed for this task.
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Re: Detecting low power motion sensors
kindly remember that above ~6ghz the lna becomes essentially an attenuator. It is better to have it off. Most motion detectors I have dealt with have a steady output signal between 0 and 15 dbm. Given that it is plastered over I don't think the resulting signal will be very strong. Add to that the vastly reduced sensitivity of the TinySA ultra in the 10Ghz and above region you would have to be very close to the actual unit to detect anything unless you use an antenna with some gain and / or a preamp for those frequencies.
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Re: Detecting low power motion sensors
To detect short pulses you MUST disable CONFIG/SPUR REMOVAL --
For more info on the tinySA go to https://tinysa.org/wiki/
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Re: Detecting low power motion sensors
As it's a radar I assume they are going to be very fast pulses so that the reflection can be measured.?
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Re: Detecting low power motion sensors
been following this. I have uW sensors in wall since similar time, I
know they are 5.6gig operating frequency (model = Zinc ZN29188 ) and
my TinySA cannot see them either...
On 16/10/2023 10:40, ANDREAS Decker
wrote:
toggle quoted message
Show quoted text
On Sat, Oct 14, 2023 at 09:56 AM, W0LEV wrote:
A short "stub" of wire should work just fine for these
frequencies.
Could a short "stub" of wire give me a significant advantage over
the stock antenna?
On Sat, Oct 14, 2023 at 11:21 AM, <phil@...> wrote:
I would assume these were doppler radar type sensors
to work behind walls and they will more than likely be 24GHz
radar sensors.
I've found conflicting information about whether 24 GHz doppler
radar type sensors can work through walls. At the time the alarm
system was installed (2011), 24 GHz sensors were not yet
widespread. Also, if they were 24 GHz this explain why I could not
see the signal with TinySA Ultra.
On Sat, Oct 14, 2023 at 11:41 AM, Erik Kaashoek wrote:
Use max hold instead of min hold
?
On Sun, Oct 15, 2023 at 02:30 AM, geoff M0ORE wrote:
How are these sensors powered? Perhaps the batteries
have discharged and they are no longer transmitting. If mains
powered, try tracing the cables using a suitable detector used
by builders etc
The sensors are mains powered, but it is not a problem to know
where they are located because the homeowner knows about it. I
myself have verified that approaching these points triggers the
alarm.
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Re: Detecting low power motion sensors
On Sat, Oct 14, 2023 at 09:56 AM, W0LEV wrote:
A short "stub" of wire should work just fine for these frequencies.
Could a short "stub" of wire give me a significant advantage over the stock antenna? On Sat, Oct 14, 2023 at 11:21 AM, <phil@...> wrote:
I would assume these were doppler radar type sensors to work behind walls and they will more than likely be 24GHz radar sensors.
I've found conflicting information about whether 24 GHz doppler radar type sensors can work through walls. At the time the alarm system was installed (2011), 24 GHz sensors were not yet widespread. Also, if they were 24 GHz this explain why I could not see the signal with TinySA Ultra. On Sat, Oct 14, 2023 at 11:41 AM, Erik Kaashoek wrote:
Use max hold instead of min hold
https://youtu.be/DlnEVAvS_I4?t=59 ? On Sun, Oct 15, 2023 at 02:30 AM, geoff M0ORE wrote:
How are these sensors powered? Perhaps the batteries have discharged and they are no longer transmitting. If mains powered, try tracing the cables using a suitable detector used by builders etc
The sensors are mains powered, but it is not a problem to know where they are located because the homeowner knows about it. I myself have verified that approaching these points triggers the alarm.
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I am KA4EMK. I want to thank Erik for his amazing work here. He has allowed himself to absorb all of everybody's input and criticism. Keep up your great work Erik. We need more people like you.Erik is above the rest, and I commend him! Erik, you, in my mind are a shining star. Keep up the good work.
On Sun, Oct 15, 2023 at 3:45?PM Erik Kaashoek < erik@...> wrote: It's not so much his post becomes difficult to read but in the web reader all message become long and difficult to read. I have edited his posts to prevent this problem
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For more info on the tinySA go to
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Thanks
On 10/15/2023 03:45 PM, Erik Kaashoek
wrote:
It's not so much his post becomes difficult to read but in the web
reader all message become long and difficult to read. I have
edited his posts to prevent this problem
--
For more info on the tinySA go to
--
73 Doug N8VY@...
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Re: Face to face help with FW upgrade anyone?
You are welcome, Lots of users have had that problem.
On Sun, Oct 15, 2023, 3:23 PM Matthew Rapaport < quineatal@...> wrote: Ha! Too easy, thanks. Yes it is blue.. ??
Matthew KD6KVH?
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It's not so much his post becomes difficult to read but in the web reader all message become long and difficult to read. I have edited his posts to prevent this problem --
For more info on the tinySA go to https://tinysa.org/wiki/
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Re: Face to face help with FW upgrade anyone?
Thank you Dave. Sent email...?
Matthew KD6KVH?
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Re: Face to face help with FW upgrade anyone?
Ha! Too easy, thanks. Yes it is blue.. ??
Matthew KD6KVH?
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Re: Face to face help with FW upgrade anyone?
Mathew,
Look at the USB port on your Chromebook. Is the internal of the USB connector blue? If so, it is a USB3.
Fred/N7PN
On Sun, Oct 15, 2023 at 10:41?AM Matthew Rapaport < quineatal@...> wrote: Hi, and thanks. I do believe it is USB3 but I do not know. The Chromebook was purchased in late 2021. I will look to see where?I can find an external USB2 hub. Don't know what such a thing looks like... Thanks for the suggestion..?
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Re: Face to face help with FW upgrade anyone?
Hi Matthew,
I'm in Mountain View. If you have reason to get down this way we could connect for an upgrade.
Dave
On Sun, Oct 15, 2023 at 10:23?AM Matthew Rapaport < quineatal@...> wrote: I do not have Linux, windows, or a Mac (retired. Software days long over). I have an android-capable Acer Chromebook. There is a DFU-UTILS for Android, but it will not recognize the ultra (driver?). I know the cable is good, I can transfer files to/from an android phone...
I live on the San Francisco peninsula between SF and Palo Alto. Is there anyone on the peninsula who might be up for a visit and can do an upgrade with me (my FW version is 4104)? I'll bring my Chromebook in case we can make that work, but otherwise an upgrade to latest would be a treat. I CAN BRING PIZZA!?
Hoping to hear from someone. Thanks in advance.
Matthew KD6KVH?
--
Dave Koberstein keep in touch:
?
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Re: Face to face help with FW upgrade anyone?
Hi, and thanks. I do believe it is USB3 but I do not know. The Chromebook was purchased in late 2021. I will look to see where?I can find an external USB2 hub. Don't know what such a thing looks like... Thanks for the suggestion..?
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Re: Face to face help with FW upgrade anyone?
Is the Chrome book USB 3? It has been reported that a USB3 connection does not work with the driver. My Lenovo Chrome Book is USB3. Maybe try an external USB 2 hub?
On Sun, Oct 15, 2023, 1:23 PM Matthew Rapaport < quineatal@...> wrote: I do not have Linux, windows, or a Mac (retired. Software days long over). I have an android-capable Acer Chromebook. There is a DFU-UTILS for Android, but it will not recognize the ultra (driver?). I know the cable is good, I can transfer files to/from an android phone...
I live on the San Francisco peninsula between SF and Palo Alto. Is there anyone on the peninsula who might be up for a visit and can do an upgrade with me (my FW version is 4104)? I'll bring my Chromebook in case we can make that work, but otherwise an upgrade to latest would be a treat. I CAN BRING PIZZA!?
Hoping to hear from someone. Thanks in advance.
Matthew KD6KVH?
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Face to face help with FW upgrade anyone?
I do not have Linux, windows, or a Mac (retired. Software days long over). I have an android-capable Acer Chromebook. There is a DFU-UTILS for Android, but it will not recognize the ultra (driver?). I know the cable is good, I can transfer files to/from an android phone...
I live on the San Francisco peninsula between SF and Palo Alto. Is there anyone on the peninsula who might be up for a visit and can do an upgrade with me (my FW version is 4104)? I'll bring my Chromebook in case we can make that work, but otherwise an upgrade to latest would be a treat. I CAN BRING PIZZA!?
Hoping to hear from someone. Thanks in advance.
Matthew KD6KVH?
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>Please do not post very long lines in formatted HTML but us plain text or cut into multiple short lines...
Good advice Erik, but I was able to comfortably and a least somewhat more conveniently read Ronaldo's posts by quickly opening a text-only text editor (set to wrap lines) and copy / paste? (ctl+c / ctc+v) his text into the editor. Through the years, I've had to occasionally resort to this tactic on various forums and newsgroups, and sometimes on text in web pages with crappy or non-universal formatting too!
I know my post isn't exactly on-topic, but I just want to help others so they don't have to endure reading long lines of text, given that this problem occasionally pops-up all over the web and I have learned from this thread and I enjoyed reading it.
73,
Cal - AD8Q
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On Sat, Oct 14, 2023 at 10:51 PM, W0LEV wrote:
A very small/short hunk of wire as a function of wavelength is generally not frequency sensitive (within reason).? A point source exhibits, theoretically, no frequency sensitivity.
Hi Dave, I'd agree that a very short antenna may permit some sort of estimation if you have nothing else available, it's not ideal, especially if trying to measure a nearby hand held. The problem is that many, especially the cheap ones, tend to radiate signal son harmonic frequencies directly from the PCB and case, effectively by-passing any filtering that may be applied to the main antenna port. Although these may not be problematic, they will be detected by the SA and whip, and may provide a higher than expected level of measured harmonics. Likewise the whip antenna (even if very short) will not provide a constant source impedance to the SA, so the measurement may be skewed as a result. It's always best to use a coaxial connection to a screened power attenuator that has a flat frequency and amplitude /? impedance characteristic across the required frequency range. This helps to ensure that you are only measuring what is being outputted via the antenna connection, and not from anywhere else. If the harmonics are at a really low level you may also have to notch or filter out the fundamental signal in order to achieve sufficient dynamic range and prevent harmonics being generated within the SA, as a result of applying an excessive signal level. To do this you need to know the frequency / attenuation characteristic of the filter being used, and apply suitable correction to the measured figures. Regards, Martin
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Ronaldo, Please do not post very long lines in formatted HTML but us plain text or cut into multiple short lines as you post now is very difficult to read your post and all other post as the ewb viewing page gets very wide --
For more info on the tinySA go to https://tinysa.org/wiki/
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DrZWave
John Cunliffe W7ZQ
mike
Doug Basberg
Fred-N7PN