I am building a Softrock Ensemble RXTX SDR transceiver from a kit. It's nearly done and part of the build instructions are to make a low pass filter. The RXTX can be built for one of four pre defined sets of bands and I am building mine for 30, 20 and 17 meter operation. For those bands the filter in the attachment is to be built. I have a spectrum analyzer available,(HP8568B), but no tracking generator for it. Can I use the incrementing output of my signal generator, (Marconi 2019A), using the up and down arrow keys which goes 80KHz to 1040MHz to feed the filter input, and somehow follow it with my spectrum analyzer? I don't doubt the instructions for the filter, I am just curious to learn and actually "see" it working. Thanks.