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Use zero-span mode. See tinySA | Main / Capturing OOK ISM Transmissions ( https://tinysa.org/wiki/pmwiki.php?n=Main.ISMTransmissions )

Hello Kurt, thanks for your comments. Answering your questions and indications: 1. S-.meter is always deflected (negative going) because according to the mnual indicates the RF gain control must be

hi, *Help on how to check car remote control?* I wanted to do it with a *digital oscilloscope* but they say it's NOT possible .... So with this tiny can I see not only the carrier RF radio but I am

Replying Jim ,NUOC, yes, I have just tested the zero adjustment and it works as it should, not problem at all. I have two SPR4,s and doing the same procedure with both.

Hi Enrique I have followed the ”saga” about S meter deflection and noticed that cabinet radiation has not been covered. I you have removed the buttom plate of the transceiver it will received

I have the same problem. I think it depends on a low quality photovoltaic inverter (probably Chinese). Andrea, do you know how to intervene? the 6m band, when there is sun is totally unusable, noise

Did you find the source Andrea? Please do share.

piece of consumer junk, a transistor broadcast receiver. returned this receiver twice to the customer saying that it was fixed. It was not fixed. It was now back in for the /third/ time. it would

This is starting to sound like an AVC system problem. Can you zero the S Meter with the zero adjust (section 5.3.5 in the manual) "enriqueeeeee2001 via groups.io" <enriqueeeeee2001@...>

just a remark: manual indicates that the rf gain must be clockwiseI have set full clocwise and the S-meter is totally deflected (negative going) and voltmeter readig is 1, 7 volts lowering the rf gain

The attenuation injected is 130 db , toggle step attenuator plus fixed attenuators. The toggle attenuator works correctly. Meter reading is always fixed to 1,7 v , it does not matter if the coils are

Then you are not attenuating the signal enough. There is clearly a low-enough level to let the meter settle to zero, somewhere between where you are operating and zero signal. You may need over 100dB

But at least the 30 db fixed attenuator should have worked together with the minimum level of the signal generator.

If that is the case then your 100dB of attenuation is not working, it is either not 100dB at 50kHz or it is being bypassed somehow. Jeff

No , S-meter stays deflected with and withaout attenuation and it does not matter tthe output level of the Tiny.? When the signal generator is off goes to zero again. The tone can be heard and zero

So let me get this straight: the S meter says at full scale with 100dB of attenuation and the TinySA set to minimum but the S meter returns to min with the generator disconnected. If that is the case

I've always used Zeners as noiwe generators but have a collection of LEDS. I'll have to give one or several LEDs a try! NoiseCom makes quite a line of noise diodes if you want something "standard" to

The S-meter stays deflected, same? as without attenuation can be seen in the photo. Yes , I have used a DMM and analog multimeter, same lecture 1,7 v no variation tweaking the coils.

For the DMM (voltmeter) are you attaching to the DC level of the AGC or possibly the downconverted IF signal in the first IF? The DMM will not see RF energy at the IF frequency. Also, most AGCs I've

What does the S meter do with the additional attenuation? Dose it still say at full scale? Jeff ________________________________________ Sent: Saturday, May 24, 2025 17:45 To: [email protected]