Clear-Com TW-40 / TW-47 operation
Following on from the discussion in this previous thread (I didn't want to hijack that thread - feel free to merge if more appropriate):
http://www.controlbooth.com/forums/sound-music-intercom/28851-clear-com-walkie-talkie-interface.html
[Mod. note: Most members, and CB staff, prefer a "hijacked" thread to a new one on the same/similar topic.]
The TW-40 and TW-47 appear to use the
Call signal to trigger the "push-to-talk" radio mechanism via a
relay. They appear to use the DC-offset in
Clear-Com mode and the 20KHz
call signal tone in TW mode. Now obviously when using a
Clear-Com party-line
system (original or TW), the
Call signal is not required to talk. Does this mean the radio
PTT is only activated while the
Call signal is present? So that would mean that using the regular
Clear-Com wired
beltpack "Mic"
button will allow other wired party-line users to hear, but not radio users. For radio users, the "
Call"
button needs to be pressed for the TW-40/TW-47 to trigger the radio
PTT function.
Am I understanding this correctly? Do people find this works ok operationally (using
Call button for sending audio to radios and Mic
button for wired party-line only)?