On 8/7/2019 9:18 PM, SCOTT BAUER wrote: > Thanks Todd. I appreciate it. I know they used to use VLF but do not > know if or when they stopped. They continue to use VLF--usually several times a week. Frequencies vary. Most often it is 18.7, 22.7, or 27.2. -- David L. Wilson dwilson314 at verizon.net