Forums › SA Series Discussions › SA44B (ARM / Pi2 version) for spur hunting › Reply To: SA44B (ARM / Pi2 version) for spur hunting
Andy
Hi Ron,
I’ve had the SA44b/TG44 combo for a few years and it has revolutionised my homebrewing activities. Tuning for ‘maximum smoke’ is now consigned to history and I really enjoy spur-hunting and harmonic measuring when I’m setting up a new rig. The small bandwidths available on the SA44b come in handy for sweeping filters too.
It’s amazing to see how a small tweak of (say) the post TX mixer filter or the LO injection can cause the spurs to change in amplitude over the spectrum and it’s easy to set up a rig for best cleanliness rather than ‘max out’.
I usually set myself a target of -60dBc or better for all unwanted outputs and it can sometimes be a (rather pleasurable) struggle to achieve the last few dB.
Computer here is a Win10 i5 laptop clocked at 2.8 GHz with 8 GB of RAM, but it runs almost as well on my old W7 P6200 laptop @2.1 GHz with 1GB ram.
Hope this helps. I’m sure you’ll find the SA44b very useful – and the price is right!
Andy G1HBE.
