The picture was taken with help of my HackRF One, which allows to render a spectrum up to 6GHz.
One can clearly see:
- Fundamental: 1GHz
- 2nd Harmonic: 2GHz
- 3rd Harmonic: 3GHz
- 4th Harmonic: 4GHz
- 5th Harmonic: 5GHz
A quick test using an LNB connected to my Promax HD Ranger 50 SE showed that the harmonics can be used at much higher frequencies than the ones specified for the SMA/NWT devices!
Of course, to use the VMA Simple Spectrum Analyser to generate specific harmonic frequencies is a bit cumbersome, as you need to calculate the corresponding fundamental frequency - even if the math is just dividing by the order of the harmonics, it is a pain.
So I added some new functionality to my software:
Of course I added a Harmonics selector to the Sweep Generator, too.
Need an application example? Here you go: use this in combination with the MAX HOLD function of your satellite field meter and you will be able to fully test your LNB's!
Activating the MAX HOLD and using the Sweep Generator, one can test the whole supported frequency band of the LNB. As expected, the SMA/NWT does not produce a really flat signal over the extended frequency range, but it is still OK to do GO/NO GO tests for LNB's and to figure out if there is something really wrong.
Head on to the download page and discover signal generation up to 22GHz with the SMA/NWT devices!
Do you have a different application for the "Harmonics Signal Generation" with the VMA Simple Spectrum Analyser software? Let me know about it!