diff --git a/example/resources.conf.prod b/example/resources.conf.prod
index 8b498d02..b0a679ec 100644
--- a/example/resources.conf.prod
+++ b/example/resources.conf.prod
@@ -69,6 +69,8 @@ bts:
   addr: 10.42.42.51
   band: GSM-1800
   ciphers: [a5_0, a5_1]
+  trx_list:
+    - arfcn: 878
   osmo_trx:
         launch_trx: false
         clock_reference: external
diff --git a/src/osmo_gsm_tester/resource.py b/src/osmo_gsm_tester/resource.py
index 1b180764..aa41b984 100644
--- a/src/osmo_gsm_tester/resource.py
+++ b/src/osmo_gsm_tester/resource.py
@@ -60,6 +60,7 @@ RESOURCES_SCHEMA = {
         'bts[].num_trx': schema.UINT,
         'bts[].max_trx': schema.UINT,
         'bts[].trx_list[].addr': schema.IPV4,
+        'bts[].trx_list[].arfcn': schema.INT,
         'bts[].trx_list[].hw_addr': schema.HWADDR,
         'bts[].trx_list[].net_device': schema.STR,
         'bts[].trx_list[].nominal_power': schema.UINT,