Testing for Spurious Emissions with the TinySA

[@HOAHamRadio]

Thanks for doing this Jason; I've needed this step by step instruction on how to use the Tiny SA. I'll finally get mine out of the box and give it a go.

[@jcvee15]

When you were first testing the FT5D for harmonics, it looked like you had the output from the radio connected to the output of the attenuator. I thought I read somewhere that that particular attenuator is unidirectional, with the input being on the side of the male SMA connector. Am I misunderstanding this? 73.

[@HamRadio2]

We tested it both ways

[@Will_N4WIL]

Is the attenuator backwards? The one I have the SMA male is the input side.

[@anxanywhere]

Yes, it is and that can damage the attenuator… On minute 20:04, @TheSmokinApe said correctly: the male SMA should be facing radio

[@GoonyMclinux]

Tiny SA is such an underrated device, they can do more than my old full size SA from a few decades ago. 🤣

[@cmarchi128]

Would a ferrite ring help reduce spurious emissions if you put it on a Baofang HT antenna?

[@K5QBF]

Great video, love the TinySA

[@HamRadio2]

Thanks Shane

[@frankthetank3342]

After the FT-60, Yaesu HT's just seems cheaper?

[@billtheunjust]

Damn, that seems like a pretty good price on the roll up Jpoles

[@JoeKrol]

So here’s my dilemma. I will be purchasing my first HF radio a 991a. I am currently studying for my General. Why do I “need” a tinysa? How will this serve me? The radio I have selected has a built in Antenna tuner. I am planning on an inverted V antenna. Is this a nice to have or a need to have. If a need to have why?

[@HamRadio2]

An SA is a Spectrum Analyzer, not an Antenna Analyzer, although you can probably use it for that also. I haven't tried. But if you ever want to use another antenna, an Analyzer is good to have

[@johnputnam7049]

Is there a way to test cell phones for spurious emissions? I'd be willing to bet that phones would be at least as bad as Baofengs. Somebody prove me wrong.

[@lyfandeth]

Cell phones are actually submitted to the FCC and tested BY THE FCC for compliance. Unlike your typical Chinese h/t, which has no certifications. (There are a few FCC approved models for specific purposes, but if you unlock them, all bets are off.)

[@n2rj]

The mfg (eg Apple) have a test lab to do the tests. FCC doesn’t do them directly. The reports are sent to the FCC for them to issue the equipment authorization. They also do expensive SAR testing for RF exposure. Apple for example got dinged for the iPhone 12 in the EU, which allegedly exceeded their limits for RF exposure. They issued a firmware update which corrected it.

[@johnputnam7049]

@@n2rj Thank you for the response Ria. I do recall that Apple got dinged not too long ago.

[@tomhess5055]

KA3RSC hey are you all IT guys?

[@YO3IGA]

Real plesure to listen to you guys. Very informative about TinySA explanations. 73 de YO3IGA

[@HamRadio2]

Thanks