Be sure to watch in 720P! Hope you enjoy it!!
Digital Level Meter:
Darkwood Designs - Audio Level Meters by Paul Marshall
http://www.darkwooddesigns.co.uk/pc2/meters.html
Check Sample Rate “CheckSR” Utility and how to use:
How to “NBEMS/FLDIGI Sound Card Calibration” by Jeffery Kopacak at:
https://www.jeffreykopcak.com/2015/10/19/nbemsfldigi-sound-card-calibration/
or download only at:
http://www.k8jtk.org/drive/ham_radio/digital_modes/checksr/CheckSR.exe
SignaLink USB Troubleshooting, Technical FAQ, and Operating Tips:
http://www.tigertronics.com/slusbts.htm#Common%20Problems