From the unit in question site
I was referring to Echostation software, not the ADS-SR1
But now that you mention it I'm sure echostation has a t-o-t and most modern mobiles have a t-o-t feature. Even still, it could be keyed up again and again if nobody's paying attention.
That's why repeater require a control operator.
From our friends at the FCC
Retransmitting Signals of Other Stations
Q: May my station retransmit the signals emanating from other amateur stations?
Yes, generally. Section 97.113, however, requires that the control operator of your station manually cause the retransmission because the radio signals of other amateur stations must not be automatically retransmitted.
Q: What do the words "manually" and "automatically" imply?
"Manually" means the retransmission is caused by some immediate physical action, e.g.,activating a push-to-talk key, voice-actuated-switch or similar action, by the control operator. "Automatically" means the retransmission is accomplished by some other means, such as a device which determines that a specific reaction is called for and then causes it to occur.
Q: Are there exceptions where my amateur station may automatically retransmit the radio signals of other amateur stations?
Yes. The Rules provide such accommodation for three types of operation. Section 97.201 accommodates auxiliary stations, Section 97.205 accommodates repeater stations and Section 97.207 accommodates space stations.
Call out the Oh-Oh squad?
Q: Are the rules for simplex repeaters the same as duplex repeaters?
A: A “simplex repeater” is not a repeater according to the FCC
. It does not simultaneously retransmit the signals of another station and it might not retransmit the signals on a different channel or channels, as specified in the FCC’s definition of a repeater.
Since it isn’t a repeater, such a device cannot be operated under automatic control. If a control operator is present and controlling the device, either by local or remote control, then it can be used, but it cannot be left unattended!
On the other hand, it is not limited by the other repeater rules, such as specific repeater frequency limitations. Auxiliary stations must control the simplex repeater and control must be conducted on frequencies authorized for auxiliary operation (above 222.15 MHz,
except 431 to 433 and 435 to 438 MHz).
And there you have it. The key words here are "present and controlling"
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