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radios:tait_tb7100

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radios:tait_tb7100 [2025/04/17 11:36] – 2e0sipradios:tait_tb7100 [2025/04/17 11:37] (current) – 2e0sip
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   * Likewise any Rx audio outputs on the DB25 system connector are also hard wired to the absent receive radio, so won't output any audio without modification.   * Likewise any Rx audio outputs on the DB25 system connector are also hard wired to the absent receive radio, so won't output any audio without modification.
   * The UI panel requires 13.8v and 3.3v, which is normally taken from the receive radio. In its absence, the paging interface board takes 13.8v from the auxiliary connector on the Tx radio, and drops it down to 3.3v. If the paging interface is removed, the UI panel will malfunction. Modifications are required to resolve this.   * The UI panel requires 13.8v and 3.3v, which is normally taken from the receive radio. In its absence, the paging interface board takes 13.8v from the auxiliary connector on the Tx radio, and drops it down to 3.3v. If the paging interface is removed, the UI panel will malfunction. Modifications are required to resolve this.
 +  * The TB7100 programming software won't program a radio with "standard" firmware, and the TB7100 specific firmware doesn't appear to be publicly available. However, you can use the TM8100 software, and it doesn't appear any functionality is lost.
   * **Warning:** If you power up the repeater whilst modifying it //without// completing all the steps, you may find it starts to transmit at 25w, drawing over 4 amps. Make sure you're using a suitable power supply and a dummy load (The radio should reduce the output power if it detects high SWR, but best to avoid risking it)   * **Warning:** If you power up the repeater whilst modifying it //without// completing all the steps, you may find it starts to transmit at 25w, drawing over 4 amps. Make sure you're using a suitable power supply and a dummy load (The radio should reduce the output power if it detects high SWR, but best to avoid risking it)
  
radios/tait_tb7100.1744889760.txt.gz · Last modified: 2025/04/17 11:36 by 2e0sip