diff --git a/doc/RADIO_COMPATIBILITY.md b/doc/RADIO_COMPATIBILITY.md
index 32350a0..c4c1799 100644
--- a/doc/RADIO_COMPATIBILITY.md
+++ b/doc/RADIO_COMPATIBILITY.md
@@ -15,10 +15,11 @@ A vendor specific adapter or cable is required for most radios.
 | KFDtool AC100 + KFDtool AC103 | Motorola R2670A/B Communications System Analyzer |
 | KFDtool AC100 + KFDtool AC104 | Kenwood NX-5700/5800/5900 Mobile |
 | KFDtool AC100 + KFDtool AC106 | Kenwood NX-5200/5300/5400 Portable |
-| KFDtool AC100 + Motorola NTN8613 | Motorola XTS Portable |
+| KFDtool AC100 + Motorola NTN8613 | Motorola XTS Portable (excluding XTS4000) |
 | KFDtool AC100 + Motorola HKN6182 | Motorola GCAI Mobile (O CH, M CH, CAN TIB) |
 | KFDtool AC100 + Motorola NNTN7869 | Motorola APX Portable |
 | KFDtool AC100 + Motorola TRN7414 | Motorola W CH, DB25 TIB |
+| KFDtool AC100 + Motorola NTN5664D | Motorola ASTRO Saber Portable |
 
 Radio Compatibility
 -------------------