3 ms·

How many of these have they made contacts with?

• i_am_proteus 1y ago
  They all have contacts; they operate by closing a circuit. 73 ;)
  • zikduruqe 1y ago
    H e e H e e (It's not Hi Hi like most people think) Old brass pounder here.
  • Biganon 1y ago
    That was probably the joke.
    • VectorLock 1y ago
      No I was actually wondering how many have been used to send CW messages that people have been able to receive.