RSP1A: wobbling spurs around 2.335MHz * n
Posted: Fri Dec 01, 2017 7:38 pm
I am a lucky RSP1 user but now wanted to try the RSP1A.
I swapped the RSP1 with the RSP1A in my installation. The RSP1A seemed to work fine.
But I detected a wobbly (unstable) spur in the 7MHz amateur band which is not present with the RSP1. Tuning through the HF band, I found the fundamental frequency at about 2.335 MHz. I can see the harmonics in the HF band, unfortunately some of them fall into amateur bands.
These spurs seem to be generated by the RSP1A, since I do not see them if I swap back to the RSP1 without changing anything else.
Questions:
- Is this a known issue?
- Is there a solution? (Moving the frequency out of the amateur band is acceptable for me)
Since I am using the RSP1(A) as receiver in my amateur radio station, this would be a show stopper.
I swapped the RSP1 with the RSP1A in my installation. The RSP1A seemed to work fine.
But I detected a wobbly (unstable) spur in the 7MHz amateur band which is not present with the RSP1. Tuning through the HF band, I found the fundamental frequency at about 2.335 MHz. I can see the harmonics in the HF band, unfortunately some of them fall into amateur bands.
These spurs seem to be generated by the RSP1A, since I do not see them if I swap back to the RSP1 without changing anything else.
Questions:
- Is this a known issue?
- Is there a solution? (Moving the frequency out of the amateur band is acceptable for me)
Since I am using the RSP1(A) as receiver in my amateur radio station, this would be a show stopper.