Thank you so much for making those measurements! Better than I would’ve expected and your power output data is also very interesting, I’ll have to save up for a version five.

#ubitx #v5 #two-tone

I used my laptop and the Audacity application to generate the 700/1900 Hz two-tone signal. This was fed from the laptop audio output through a variable attenuator with a 10-turn pot. This feeds the mi

#ubitx #v5 #two-tone

Interesting, Now a days, the TX IMD is the most critical parameter on SSB mode. Consider the best on class IMD (called Splatter by the old timers), it is about -35 dbc. Thus, this is what you will hea

#ubitx #v5 #two-tone

All, I just finished measuring the two-tone TX IMD on my v5 uBITX. These are 3rd order products, and I measured relative to either tone. Since the ARRL states their measurements relative to PEP I have

#ubitx #v5 #two-tone

Hi, There are many free Android apps that will generate whatever tones you want. On desktops and laptops, the Linux program "Audacity" is very good for making whatever tones you want too. It will also

#two-tone

He used a digital oscilloscope with FFT capability. Claims that with adjustment, harmonic content is below -50 dB. Mike K5ESS

#two-tone

I don’t get QEX but wonder what method he used to measure the distortion of his circuit. I think the HP334A was useful for that (THD I guess). They still want quite a high price for them on eBay.

#two-tone

The often neglected requirement of a two tone generator is that it should have very very low distortion of its own. Let's imagine that you have a 2 tone generator with 1% distortion. This would be con

#two-tone

As mentioned in a previous posts by Farhan and Raj there is an online generator that can provide two tones for testing. http://www.onlinetonegenerator.com/binauralbeats.html. However if you would like

#two-tone