Differences

This shows you the differences between two versions of the page.

--- radios:tait_tb7100 [2025/04/17 10:14] – 2e0sip
+++ radios:tait_tb7100 [2025/04/17 11:37] (current) – 2e0sip
@@ Line 15: / Line 15: @@
 In my opinion this is worth the effort, as the chassis provides a nice 1U rack mount platform with power distribution and suitable cooling for high duty cycle operation, and room for some combination of a duplexer, AC power supply, NinoTNC, MMDVM, or Raspberry Pi.
-=== Notes ===
+==== Notes ====
   * The speaker and volume control on the UI board are hard wired to the absent receive radio, so monitoring the transmit side isn't possible 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 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)
-=== Files ===
+==== Conversion - Duplex Repeater ====
+To convert the pager transmitter into a duplex repeater, you will need to transplant in an Rx radio, 3x ribbon cables, a DC power lead, and appropriate coax / connectors / duplexer (optional)
+==== Files ====
 {{ :radios:tait_multitone_paging_interface_fitting.pdf |}}
 {{ :radios:tait_multitone_pager_module.pdf |}}