I have that signal generator and it isn't great. It's very noisy for low amplitude (<100mV) signals. It is useful for some quick tests, but you can't trust it at low signal levels. I've not tried to generate quadrature signals with it, not sure if its capable.
I've had some success using my computer's sound card as a quadrature signal generator for audio frequencies, but the DAC is not fast enough for fully testing the T41.
On Saturday, May 17th, 2025 at 7:32 AM, John Owens K1JO via groups.io <johnowenschina@...> wrote:
[Edited Message Follows]
I'm looking for test equipment suggestions. I have an oscilloscope, DVM, LCR meter but need enough equipment to at least finish this T-41...doubt I will live long enough to build anything more complicated ;-)
In the DSP and SDR book they mention an audio signal generator with quadrature and a spectrum analyzer. Any suggestions on models that won't break the bank but are sufficient for building, testing and tuning the T-41?
Anyone advice on this signal generator, not sure if it can generate quadrature? https://www.amazon.com/Professional-Generator-Seesii-Precision-Dual-Channel/dp/B08T9H9FBY/ref=asc_df_B08T9H9FBY?mcid=b9e572b8f8e63e6fbdcf4c21c805b61f&hvocijid=15043490532578762466-B08T9H9FBY-&hvexpln=73&tag=hyprod-20&linkCode=df0&hvadid=721245378154&hvpos=&hvnetw=g&hvrand=15043490532578762466&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9002666&hvtargid=pla-2281435177858&th=1
