[
<% @bts.each_with_index do |bts, index| -%>
<% bts["trx"].each_with_index do |trx, trx_i| -%>
 {
  "index": <%= index %>,
  "trx": <%= trx_i %>,
  "name": "<%= bts["name"] %>",
  "chan": <%= trx["chan"]%>,
  "bsic": <%= bts["bsic"]%>
 }<%= ',' if trx_i < (bts["trx"].size - 1) %>
<% end -%><%= ',' if index < (@bts.size - 1) %>
<% end -%>
]