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When I run a sweep with Max-hold for a few hours I notice that the PC disconnects the TinySA Ultra USB connection. I have to restart the TinySA Ultra and the software to get it going again. I wonder

Yes, bottom end of the specified frequency range is 100 kHz. I'd ignore anything below that. The 28 kHz is highly likely due to a near-by or connecged switching charger or supply. They all produce

I get the same signal at a level of -48 dB on my Ultra with a short on the antenna input.? It is a spur generated inside the tinySA. *BUT* - You are operating below the published performance specs

28kHz is well below the specified lower frequency limit of the TinySA Ultra, which is stated as being 100kHz. The fact you are seeing that signal, with no antenna, suggests a very dirty switching

I think you are on the right track.

The charger might switch at that frequency. How does it perform with everything disconnected - no charger, no PC/laptop, and no USB cable? Dave - W?LEV [email protected]> wrote: --

Valis, Use the appropriate cables to try the same setup when connected to a 50ohm dummy load. The device may be picking up stray signals in the shack, and the dummy load should reduce any stray EMF

Thx no nothing attached, I observed it go from -43 dB to + 10db and back down into -40s. Had antenna connected at first, then disconnected just? and it was lying on the table on but not connected to

I should let Eric, its creator, chime in on this one. . . . However, any digital electronic system will generate low and high frequency energy as a basic result of its operation. Have a good

Do you have a USB cable attached? If so, try it without. Bob S

Is the tiny sa ultra capable of glitching and self generating a 28khz signal? Even without an antenna? Please see attached. Thanks. Valis

thank you for the hint and the picture, i will fix the headphone socket with some glue - before it will get loose..

Thank you for a quick reply. I too am very interested in the new tinySA ULTRA plus. Regards, F wrote:

Hi everyone, I ran into some trouble while developing a PC app to control the TinySA Ultra in signal generator mode via USB.? I had the output on/off control and output level working but when I went

Hi MDW, Come off line with your address and I'll send you 2ea 30db 1W attn, no charge. (CONUS only, these items were part of a pkg I cannot sell overseas, sorry) Mike C. Sand Mtn GA

This bit my former employer in a wireless intercom beltpack we made. TRRS jacks didn't hold up as well as the XLrs. All it took was a dangling headset cable to snag on something as the user moved and

Audio jacks on my walkmans were first to go. My solution with limited equipment and skills was to wire it to the pcb and let it "float" in the flimsy plastic chasis. MP3 players and later phones or

Yes, very interesting ... Is it possible to have some preview of the features of the new device ? ;-)

" the improved tinySA ULTRA *plus* " Wait - what's this? ?What did I miss? ?Like I need another tinySA. ?But, progress is progress...

I see this kind of stuff all the time, and I think it comes from Engineers and CAD layout folks who never repaired things before they went to engineering school. There are times when SMT connectors