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Re: tinysa ultra attentual and signal level fail
Is this one a clone? because if not, I'd be keen to try and replace the attenuator, or go through the trouble shooting more closely and try and fix it.
By a4notebook · #19682 ·
Re: tinysa ultra attentual and signal level fail
Maybe, no -- Designer of the tinySA For more info go to https://tinysa.org/wiki
By Erik Kaashoek · #19681 ·
Re: Manual fault finding
What you are observing is indeed possible as the switch can fail in?different ways -- Designer of the tinySA For more info go to https://tinysa.org/wiki
By Erik Kaashoek · #19680 ·
tinysa ultra attentual and signal level fail
Hi I bought tinysa ultra from facebook. It fails attentuator and signal level. Can it be fixed? can it be used as a signal generator?
By a4notebook · #19679 ·
Re: Manual fault finding
Hi Erik, yes i performed the manual routine and think it is useful. I have a low signal level on my Ultra 407, down by 40 dB, i.e. at -75 dBm. Now your manual says that even with a bad RF switch, if
By heinrich · #19678 ·
Re: Interval Triggering working great (apology to Erik)
Comment regarding the interval time of 32.6msec that I used. ?An exact multiple of 1/60 would have been 33.3…..msec but to get a stable display I had to set it to 32.6msec. ?Difference is likely
By Donald Kirk · #19677 ·
Re: What accessories do I need for a TinySA Ultra?
?If I remember right, the HP network analyzers have a ‘skip isolation’ option in their cal routine, making me think it won’t make much difference in most cases - especially in a Nano.
By Terry Perdue · #19676 ·
Interval Triggering working great (apology to Erik)
Hi Erik and gang, I owe Erik an apology as not to long ago I said the interval triggering feature that Erik implemented for me a few years ago on the TinySA was not working properly on my TinySA
By Donald Kirk · #19675 ·
Re: WinSpectrum III spectrum analyzer application designed for Windows users working with Tiny SA Ultra+
WinSpectrum III v3.0.1.1 – Update & Fixes Some users reported that nothing was displayed on the graph when using tinySA (basic). The issue was caused by WinSpectrum's default scan setting of 450
By Xavier Junqué i de Fortuny · #19674 ·
WinSpectrum III v3.0.1.1 – Update & Fixes
Some users reported that nothing was displayed on the graph when using tinySA (basic). The issue was caused by WinSpectrum's default scan setting of 450 points, which the tinySA (basic) does not
By Xavier Junqué i de Fortuny · #19673 ·
Re: What accessories do I need for a TinySA Ultra?
No this is not just an attenuator. It is a limiter with silicon devices. You can buy limiter diodes and build several yourself if you don't want to pay $63 for good insurance. That's your decision.
By W0LEV · #19672 ·
Re: What accessories do I need for a TinySA Ultra?
So help me understand... This is basically an attenuator, but only for signals above a certain threshold, letting weaker ones through without attenuating them? Matthew KD6KVH
By Matthew Rapaport · #19671 ·
2025 SVHFS Conference Update
Below is an update on the schedule of speakers and presentations for the Southeastern VHF Society Conference. The conference will be held at the Quality Inn at Exit #4 in Clarksville, TN April 4-5,
By Robin Midgett · #19670 ·
Re: What accessories do I need for a TinySA Ultra?
1) Yes, for isolation, both ports should have a non-reactive 50-ohm resistor installed. 2) It's excellent insurance to install the following on each port. From MiniCircuits:
By W0LEV · #19669 ·
Re: What accessories do I need for a TinySA Ultra?
Hello Erik! To do a proper ISOLATION calibration you need 2 load stubs. The nanoVNA only comes with one??? Matthew KD6KVH
By Matthew Rapaport · #19668 ·
Re: Settings for measure Lora signals
Seems to work pretty good like you said Thank you so much!
By sRom · #19667 ·
Re: Settings for measure Lora signals
To do pure power measurement at a known transmit frequency (or small range of frequencies) it may be better to switch to zero span mode and set the RBW to 850 kHz. This will convert the tinySA into a
By Erik Kaashoek · #19666 ·
Settings for measure Lora signals
Hello there, I am having some strange behaviors between rx and tx in my personal project and have thought of using tinysa to better monitor what is going on. The use will be for short/medium range so
By sRom · #19665 ·
Re: What accessories do I need for a TinySA Ultra?
For meticulous as I am, About the 3rd time I calibrated my NanoVNA 2-3 years ago.. Calibration was funky and the supplied 50 ohm load was, I recall OPEN... Fortunately AMAZON? solved that with a pair
By Larry Macionski · #19664 ·
Re: What accessories do I need for a TinySA Ultra?
Some people like to have a spare or backup set of calibration kits in case one gets lost or misplaced. Myself, I have a set for my NanoVNA H and a set for my H4. Both NanoVNAs are in separate cases
By Clyde Lambert · #19663 ·