I made my first AM contact today with local ham on 40m, while testing out a newly acquired GRC-9. I have been successful with CW contacts since receiving the old radio but wanted to try out the old Shure Army T-17 carbon mic that shipped with it with on a voice contact. The unit is rated at a mighty 7 watts out on PHONE-HI but according to my QRP watt meter it was belting out 10 watts as I talked. Likely not going to be setting any AM records with it. The other station was running 10 watts on a Yaesu 450D. We are both CW ops so finding his microphone took longer than the contact. The other station told me my modulation was good and it sounded like me. He also reported good frequency stability. One thing that I need to track down... It seems that something responsible for AM modulation isn't powered until key down; so before speaking for the first time, or after a long pause between transmissions, I have to wait 3-5 seconds for something to wake up before speaking. I see no power output on key-down for a few seconds. I suppose it could be the carbon mic. I'm not familiar with their operation, but as there's no output I'm assuming it's a tube filament that isn't powered prior to transmit. Hopefully more knowledgeable individuals can chime in. All-in-all it was fun to "talk" using this antique, with my mouth rather than my fingers (CW) for the first time. I may try checking in on a military AM net but with my limited power it seems unlikely unless there is fantastic propagation.