On 6/16/19 1:39 PM, Joe Herdler wrote: > So if I push this while the loop current is on and the TTY is > ready to either send or receive, the machine should start > making the "chunk chunk chunk" sound that it does when > the loop current is turned off? Yes. -- "I am a river to my people." Jeff-1.0 WA6FWI www.foxsmercantile.com