diff --git a/examples/wifi_tx.grc b/examples/wifi_tx.grc
index e697a0b..f438c56 100644
--- a/examples/wifi_tx.grc
+++ b/examples/wifi_tx.grc
@@ -372,6 +372,267 @@ blocks:
     coordinate: [440, 284]
     rotation: 0
     state: enabled
+- name: osmosdr_sink_0
+  id: osmosdr_sink
+  parameters:
+    affinity: ''
+    alias: ''
+    ant0: ''
+    ant1: ''
+    ant10: ''
+    ant11: ''
+    ant12: ''
+    ant13: ''
+    ant14: ''
+    ant15: ''
+    ant16: ''
+    ant17: ''
+    ant18: ''
+    ant19: ''
+    ant2: ''
+    ant20: ''
+    ant21: ''
+    ant22: ''
+    ant23: ''
+    ant24: ''
+    ant25: ''
+    ant26: ''
+    ant27: ''
+    ant28: ''
+    ant29: ''
+    ant3: ''
+    ant30: ''
+    ant31: ''
+    ant4: ''
+    ant5: ''
+    ant6: ''
+    ant7: ''
+    ant8: ''
+    ant9: ''
+    args: '""'
+    bb_gain0: '20'
+    bb_gain1: '20'
+    bb_gain10: '20'
+    bb_gain11: '20'
+    bb_gain12: '20'
+    bb_gain13: '20'
+    bb_gain14: '20'
+    bb_gain15: '20'
+    bb_gain16: '20'
+    bb_gain17: '20'
+    bb_gain18: '20'
+    bb_gain19: '20'
+    bb_gain2: '20'
+    bb_gain20: '20'
+    bb_gain21: '20'
+    bb_gain22: '20'
+    bb_gain23: '20'
+    bb_gain24: '20'
+    bb_gain25: '20'
+    bb_gain26: '20'
+    bb_gain27: '20'
+    bb_gain28: '20'
+    bb_gain29: '20'
+    bb_gain3: '20'
+    bb_gain30: '20'
+    bb_gain31: '20'
+    bb_gain4: '20'
+    bb_gain5: '20'
+    bb_gain6: '20'
+    bb_gain7: '20'
+    bb_gain8: '20'
+    bb_gain9: '20'
+    bw0: '0'
+    bw1: '0'
+    bw10: '0'
+    bw11: '0'
+    bw12: '0'
+    bw13: '0'
+    bw14: '0'
+    bw15: '0'
+    bw16: '0'
+    bw17: '0'
+    bw18: '0'
+    bw19: '0'
+    bw2: '0'
+    bw20: '0'
+    bw21: '0'
+    bw22: '0'
+    bw23: '0'
+    bw24: '0'
+    bw25: '0'
+    bw26: '0'
+    bw27: '0'
+    bw28: '0'
+    bw29: '0'
+    bw3: '0'
+    bw30: '0'
+    bw31: '0'
+    bw4: '0'
+    bw5: '0'
+    bw6: '0'
+    bw7: '0'
+    bw8: '0'
+    bw9: '0'
+    clock_source0: ''
+    clock_source1: ''
+    clock_source2: ''
+    clock_source3: ''
+    clock_source4: ''
+    clock_source5: ''
+    clock_source6: ''
+    clock_source7: ''
+    comment: ''
+    corr0: '0'
+    corr1: '0'
+    corr10: '0'
+    corr11: '0'
+    corr12: '0'
+    corr13: '0'
+    corr14: '0'
+    corr15: '0'
+    corr16: '0'
+    corr17: '0'
+    corr18: '0'
+    corr19: '0'
+    corr2: '0'
+    corr20: '0'
+    corr21: '0'
+    corr22: '0'
+    corr23: '0'
+    corr24: '0'
+    corr25: '0'
+    corr26: '0'
+    corr27: '0'
+    corr28: '0'
+    corr29: '0'
+    corr3: '0'
+    corr30: '0'
+    corr31: '0'
+    corr4: '0'
+    corr5: '0'
+    corr6: '0'
+    corr7: '0'
+    corr8: '0'
+    corr9: '0'
+    freq0: freq
+    freq1: 100e6
+    freq10: 100e6
+    freq11: 100e6
+    freq12: 100e6
+    freq13: 100e6
+    freq14: 100e6
+    freq15: 100e6
+    freq16: 100e6
+    freq17: 100e6
+    freq18: 100e6
+    freq19: 100e6
+    freq2: 100e6
+    freq20: 100e6
+    freq21: 100e6
+    freq22: 100e6
+    freq23: 100e6
+    freq24: 100e6
+    freq25: 100e6
+    freq26: 100e6
+    freq27: 100e6
+    freq28: 100e6
+    freq29: 100e6
+    freq3: 100e6
+    freq30: 100e6
+    freq31: 100e6
+    freq4: 100e6
+    freq5: 100e6
+    freq6: 100e6
+    freq7: 100e6
+    freq8: 100e6
+    freq9: 100e6
+    gain0: '14'
+    gain1: '10'
+    gain10: '10'
+    gain11: '10'
+    gain12: '10'
+    gain13: '10'
+    gain14: '10'
+    gain15: '10'
+    gain16: '10'
+    gain17: '10'
+    gain18: '10'
+    gain19: '10'
+    gain2: '10'
+    gain20: '10'
+    gain21: '10'
+    gain22: '10'
+    gain23: '10'
+    gain24: '10'
+    gain25: '10'
+    gain26: '10'
+    gain27: '10'
+    gain28: '10'
+    gain29: '10'
+    gain3: '10'
+    gain30: '10'
+    gain31: '10'
+    gain4: '10'
+    gain5: '10'
+    gain6: '10'
+    gain7: '10'
+    gain8: '10'
+    gain9: '10'
+    if_gain0: '30'
+    if_gain1: '20'
+    if_gain10: '20'
+    if_gain11: '20'
+    if_gain12: '20'
+    if_gain13: '20'
+    if_gain14: '20'
+    if_gain15: '20'
+    if_gain16: '20'
+    if_gain17: '20'
+    if_gain18: '20'
+    if_gain19: '20'
+    if_gain2: '20'
+    if_gain20: '20'
+    if_gain21: '20'
+    if_gain22: '20'
+    if_gain23: '20'
+    if_gain24: '20'
+    if_gain25: '20'
+    if_gain26: '20'
+    if_gain27: '20'
+    if_gain28: '20'
+    if_gain29: '20'
+    if_gain3: '20'
+    if_gain30: '20'
+    if_gain31: '20'
+    if_gain4: '20'
+    if_gain5: '20'
+    if_gain6: '20'
+    if_gain7: '20'
+    if_gain8: '20'
+    if_gain9: '20'
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    nchan: '1'
+    num_mboards: '1'
+    sample_rate: samp_rate
+    sync: sync
+    time_source0: ''
+    time_source1: ''
+    time_source2: ''
+    time_source3: ''
+    time_source4: ''
+    time_source5: ''
+    time_source6: ''
+    time_source7: ''
+    type: fc32
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [400, 692.0]
+    rotation: 0
+    state: disabled
 - name: uhd_usrp_sink_0
   id: uhd_usrp_sink
   parameters:
@@ -629,6 +890,7 @@ blocks:
     sd_spec6: ''
     sd_spec7: ''
     show_lo_controls: 'False'
+    start_time: '-1.0'
     stream_args: ''
     stream_chans: '[]'
     sync: pc_clock
@@ -674,10 +936,10 @@ connections:
 - [blocks_multiply_const_vxx_0, '0', foo_packet_pad2_0, '0']
 - [blocks_socket_pdu_0, pdus, ieee802_11_mac_0, app in]
 - [blocks_vector_source_x_0, '0', wifi_phy_hier_0, '0']
+- [foo_packet_pad2_0, '0', osmosdr_sink_0, '0']
 - [foo_packet_pad2_0, '0', uhd_usrp_sink_0, '0']
 - [ieee802_11_mac_0, phy out, wifi_phy_hier_0, mac_in]
 - [wifi_phy_hier_0, '0', blocks_multiply_const_vxx_0, '0']
-- [wifi_phy_hier_0, mac_out, ieee802_11_mac_0, phy in]
 
 metadata:
   file_format: 1