Re: What accessories do I need for a TinySA Ultra?
Oh and can someone link to a 0-1Ghz LNA worth buying. And also a link for a backup 50ohm calibration kit? Or how do I test if i buy one to see if its 50ohms?
Links to attenuator worth buying?
And
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asron87@...
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#19690
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Re: What accessories do I need for a TinySA Ultra?
Hi,
Our of the above mentioned items, I bought a set of EMC SMA probes for a few €.
They are very useful for servicing radio equipments without disturbing their circuitry.
You can measure
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Georges Ringotte
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#19689
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Re: What accessories do I need for a TinySA Ultra?
Erik.... are you really the guy that made these? That's awesome to be a beginner and get an answer from the creator. So thank you for that.
What accessories would you recommend?
Is a VLM-33W-2W-S+
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asron87@...
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#19688
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Re: TinySA Ultra Calibration Fail.
Dear all,
Finally the parts arrived, and I started the IC changes.
First, I removed the U22 0 ohm resistor, working as jumper, and place the RF Switch, and do recall. During recall it fault again,
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jocaca.iot@...
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#19687
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Re: What accessories do I need for a TinySA Ultra?
No need for self righteousness. There are RF environments where strong signals can flood an antenna. I can see why such devices would be useful. But I am nowhere near such a RF environment.
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Matthew Rapaport
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#19686
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Re: tinysa ultra attentual and signal level fail
Trying to replace
Input RF switch U22:? AS179-92LF
LNA U14: BGA2817
might need to be replaced
Attenuator U28: PE4312C-Z
Good luck.
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Hugen
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#19685
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Re: tinysa ultra attentual and signal level fail
Impossible to tell
--
Designer of the tinySA
For more info go to https://tinysa.org/wiki
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Erik Kaashoek
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#19684
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Re: Manual fault finding
Thanks. I inaugurated my cheap hot air station and the RF switch gently came off. Now i could jumper it to check the attenuator, but i prefer waiting for the spare part and soldering paste, and keep
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heinrich
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#19683
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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.
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a4notebook
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#19682
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Re: tinysa ultra attentual and signal level fail
Maybe, no
--
Designer of the tinySA
For more info go to https://tinysa.org/wiki
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Erik Kaashoek
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#19681
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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
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Erik Kaashoek
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#19680
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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?
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a4notebook
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#19679
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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
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heinrich
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#19678
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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
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Donald Kirk
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#19677
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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.
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Terry Perdue
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#19676
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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
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Donald Kirk
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#19675
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Re: WinSpectrum III spectrum analyzer application designed for Windows users working with Tiny SA Ultra+
WinSpectrum III v3.0.1.1 ¨C 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
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Xavier Junqu¨¦ i de Fortuny
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#19674
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WinSpectrum III v3.0.1.1 ¨C 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
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Xavier Junqu¨¦ i de Fortuny
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#19673
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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.
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W0LEV
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#19672
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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
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Matthew Rapaport
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#19671
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