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FJR Motorcycle Forums
Technical & Mechanical Problems
Starcom1 Advance PTT-03 VOX Inhibit issue
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<blockquote data-quote="Fred W" data-source="post: 474640" data-attributes="member: 3828"><p>Yes, that's it. Thanks Kirby.</p><p></p><p>On my GMRS radios (using the Motorola Talkabout T5720) there is a red led that comes on when transmitting. It also emits a loud attention tone "BEEP!" each time the PTT is released. Not when the PTT is depressed, but when it is released.</p><p></p><p>The way my unit has been working if I have the VOX dialed up to the appropriate level and the PTT-03 hooked up is the GMRS radio's transmit light flashes on and off at about 1-2 second intervals whenever I am speaking to my passenger. Each time it flashes off there is the loud beep over the headset and it mutes all other audio. I also know that this beep is being transmitted and received by other GMRS radios in the area (annoying). But I never checked to see if my voice audio was being suppressed.</p><p></p><p>I assumed that the starcom engineers would have designed the PTT-3 to inhibit the PTT function, not just block the audio. FRS/GMRS utilizes Frequency Modulation (FM), therefore it is transmitting full power even when not being modulated. So (theoretically at least) it will drain the transmitter's battery to be constantly transmitting blanks.</p><p></p><p>I am certain that my attention tone can be turned off, and I will try running mine this way too.</p></blockquote><p></p>
[QUOTE="Fred W, post: 474640, member: 3828"] Yes, that's it. Thanks Kirby. On my GMRS radios (using the Motorola Talkabout T5720) there is a red led that comes on when transmitting. It also emits a loud attention tone "BEEP!" each time the PTT is released. Not when the PTT is depressed, but when it is released. The way my unit has been working if I have the VOX dialed up to the appropriate level and the PTT-03 hooked up is the GMRS radio's transmit light flashes on and off at about 1-2 second intervals whenever I am speaking to my passenger. Each time it flashes off there is the loud beep over the headset and it mutes all other audio. I also know that this beep is being transmitted and received by other GMRS radios in the area (annoying). But I never checked to see if my voice audio was being suppressed. I assumed that the starcom engineers would have designed the PTT-3 to inhibit the PTT function, not just block the audio. FRS/GMRS utilizes Frequency Modulation (FM), therefore it is transmitting full power even when not being modulated. So (theoretically at least) it will drain the transmitter's battery to be constantly transmitting blanks. I am certain that my attention tone can be turned off, and I will try running mine this way too. [/QUOTE]
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FJR Motorcycle Forums
Technical & Mechanical Problems
Starcom1 Advance PTT-03 VOX Inhibit issue
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