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A Tiny mod to my TInySA ultra
Easily reversible but a big improvement to the jog wheel action/ergonomics. i just carefully applied a very tiny blob of hot melt glue to the edge of the jog wheel. Now it has a very much better tactile feel and is just so much easier to use with massively less risk of accidentally pressing it down. Obviously needs to be done very carefully so as not to glue the wheel so it can¡¯t be used. Great thing about hot glue is it can be peeled away if I decided to remove it.?
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TinySA firmware version numbers
I am new to both groups.io and TinySA, so please treat my post with understanding.
I bought TinySA over a month ago from SeeSii. Recently I decided to check for firmware update. The firmware in my unit is tinySA4_v1.4-109-g5cfd570. The latest firmware, according to is tinySA4_v1.4-140-g294ba13. Trying to learn whether the changes between 1.4_109 and 1.4_140 justify updating, I had a look at the file changelog.txt. The latest firmware version mentioned in this file is V1.4049. (Is it the same as 1.4_049? If so, it would be older than the version in my TinySA). In any case, the version presently loaded on my TinySA (1.4-109) is not mentioned in this list. Nor is 1.4-140. I would appreciate clarification how the version numbers in the changelog.txt relate to the version numbers displayed on the screen of my unit and in the firmware web page. I would like to learn about the differences between versions of the firmware. I appreciate the explanation. Darius |
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Re: GNSS Jammer
Have you tried an old style handheld GPS at that location?? Does it show various satellite acquisition status' and build an almanac?? If not, work out in mile increments at the cardinal points and see where the problem disappears.???Check with DOT or county and see if they have any Land Survey experience with that location.? Sometimes there are things like underground mineral deposits or terrain reflection issues that are known to them.? Often surveys have to be done with Aux Beacons for that reason.? ?Not all signal denials are a jam. |
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Re: GNSS Jammer
Modern GNSS satellites use many different frequencies besides L1. The Russian Glonass satellites in view each use their own discrete frequency. With GPS, GLONASS, and?Galileo, the major systems available to the public, many different frequencies are used. Most modern civil receivers use all three systems. Anti-jamming is built into all modern systems.? Yes, the signals as received are very weak, however, the data is spread over a fairly wide band, with forward error correction. All in all, as a group the system is pretty hardy; the military systems are much more so.? You certainly could use a spectrum analyzer and directional antenna to DF on intentional or unintentional interference. The waterfall display may be the most useful mode. Stuart K6YAZ Los Angeles, California
On Friday, December 29, 2023 at 11:47:32 AM PST, Martin via groups.io <martin_ehrenfried@...> wrote:
It should be relatively easy to spot the most common cheap jammers, but only if they are close to you. Remember that your drone will be able to receive signals within its enhanced radio coverage area that you on the ground can't They typically transmit a swept signal, often with some additional noise component, and usually have to be at least 10 times stronger at the receiver than the signal being jammed in order to be effective. In addition to the examples already mentioned cheap GPS jammers also tend to be used inside vehicles for various bad purposes, so these can also be problematic for genuine users, as they move around. I have noticed this myself when using a GPS satnav in my car. Sometimes it can't receive any satellites, even though the sky is not obscured. it is only when I have moved away from other traffic, and reception is restored, that I realised a jammer was probably being used in one of the other vehicles. Regards, Martin |
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Re: GNSS Jammer
I don't know that I would be too quick to chalk up loss of GNSS to some nefarious individuals. There are a couple of intersections in town where I lose SiriusXM and sometimes GNSS. There is are traffic camera's, speed cameras and an a couple of big cell towers near these intersections. I have played around and by moving up or stopping 10' one way or the other I can not lose satellite signals.
However, wrt to the drone GNSS, is it being flown near possible sources of interference like the ones I mentioned? Near an airport and not necessarily a big one either. Smaller airports usually have a common frequency so the ground services and pilots can communicate with each other. |
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Re: GNSS Jammer
It should be relatively easy to spot the most common cheap jammers, but only if they are close to you. Remember that your drone will be able to receive signals within its enhanced radio coverage area that you on the ground can't
They typically transmit a swept signal, often with some additional noise component, and usually have to be at least 10 times stronger at the receiver than the signal being jammed in order to be effective. In addition to the examples already mentioned cheap GPS jammers also tend to be used inside vehicles for various bad purposes, so these can also be problematic for genuine users, as they move around. I have noticed this myself when using a GPS satnav in my car. Sometimes it can't receive any satellites, even though the sky is not obscured. it is only when I have moved away from other traffic, and reception is restored, that I realised a jammer was probably being used in one of the other vehicles. Regards, Martin |
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Re: GNSS Jammer
It does not take much power to jam a GPS satellite signal.?
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Re: Driver issues on Windows 10 and 11
Bruce,
Fortunate for me there are plenty of computers and O/S's to play with. Jumping to another has spoiled me.? One thing you might consider is if you can boot to USB by bios and install an O/S on the drive.? I've set up a few early windows on 32Gb thumb drives using Fat32 formats (you cannot use the windows formatter).? The HP2USB? utility doesn't like windows 10 either.? There are a few apps out there.? Look for WinToUSB? ?Free Windows-To-Go (WTG) Creator which allows you to install and run a fully-functional Windows on external hard drive, USB flash drive or Thunderbolt drive.? ?If you use a USB SSD you can clone your whole system. |
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Re: Statistics on cal output level
#poll-notice
Measured the 30 MHz output level using a calibrated Anritsu MS2713C?spectrum analyzer. I offset the analyzer and cables at -30 dBm for the correct level, using known calibrated equipment. The reading from my Ultra is -35.32 dBm. The frequency was 16 Hz low. Pretty remarkable consistency.? When measured with an accurate power meter, including all of the harmonics, the total level was -33.32 dBm. Stuart K6YAZ Los Angeles, California
On Wednesday, December 27, 2023 at 03:38:41 AM PST, Martin via groups.io <martin_ehrenfried@...> wrote:
Tried adding multiple votes, but it doesn't seem possible. All analysers are out of calibration, but there is a trend towards being slightly low of -35.0 dBm -35.17 dBm on an HP 8563E -35.30 dBm on a Signal Hound SA44B -35.57 dBm on a Rigol DSA815 Regards, Martin |
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Re: Driver issues on Windows 10 and 11
Bruce Hawkins
Besides the possibility of bricking my unit there's the actually danger of damaging my only computer.? And there's no one around here, to fix it correctly.? ?So I can't update my SA.? Because the risk is extremely dangerous. Best regards, Bruce Hawkins - AC6DN.? Sent from my Android phone.? And from: ac6dn@... On Dec 28, 2023 1:07 PM, Andrew Harman <Nexus9d9@...> wrote: ? ? I'm only an old intermediate user and this frustrates me.? ?On earlier posting on this there were several other bips mentioned.? Using a USB hub was my first attempt to correct, second was the Memory Integrity setting and third was the USB driver removal and reinstallation.? I had opted not to use the STM package but stay with Eriks.? What I initially found was a reference to some other security features maybe it was in the User Account Control (s/s other than simply running as an admin) being embedded in Windows 10.? I have to see if I can find that reference again but it wasn't very detailed and my memory is fading off. |
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Re: Driver issues on Windows 10 and 11
? ? I'm only an old intermediate user and this frustrates me.? ?On earlier posting on this there were several other bips mentioned.? Using a USB hub was my first attempt to correct, second was the Memory Integrity setting and third was the USB driver removal and reinstallation.? I had opted not to use the STM package but stay with Eriks.? What I initially found was a reference to some other security features maybe it was in the User Account Control (s/s other than simply running as an admin) being embedded in Windows 10.? I have to see if I can find that reference again but it wasn't very detailed and my memory is fading off.
? ?What I did find is that running Erik's program under Windows 8.1 it ran flawless without any driver or security issues.? The 8.1 computer having third party software and freeware is "Air Gapped" meaning not networked.? (That's the highly recommended and standard gov't IT protocol these days.)? ?So native drivers and security settings were good to go.? ? ? ?? What bothers me about the Zadig USB driver install is you do have to be cautious, as he states, since other hardware (like usb keyboards) may not work with an applied driver.? Also stated was windows doing driver checking and the potential for rollback on reboot - meaning you maybe should remove the original driver.? Its a bit of a red flag and yes its recoverable but I'm not sure its the most ideal scenario for everyone. ( I see a potential for other unknown issue creepage along the way)? ?For security and assurance I'm personally opting for the fewest possible third party apps and as much native support as possible.?? ? ? What I'm most interested in is learning about those other hidden security features (if) or in the meanwhile will use the "keep it simple stupid" method? by using 8.1 for flashing.? But that's only me.? There are always other options.? ?Whether I use your correction or not I'm glad you've put it on the table.? ?Thanks for sharing. Andy |
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