div class=trans-pagebuttonPage 1button div class=trans-image amp-img class=trans-thumb alt=Page 1: · So you can listen the SOOHE tone make a double beat between these two signals Only on please set the mode switch USB position Then change the mode switch to CW position you src=https:reader034fdocumentsinreader034viewer20220421205e99e6d28876237e3e6fb0afhtml5thumbnails1jpg width=142 height=106 layout=responsive amp-img divdivdiv class=trans-pagebuttonPage 2button div class=trans-image amp-img class=trans-thumb alt=Page 2: · So you can listen the SOOHE tone make a double beat between these two signals Only on please set the mode switch USB position Then change the mode switch to CW position you src=https:reader034fdocumentsinreader034viewer20220421205e99e6d28876237e3e6fb0afhtml5thumbnails2jpg width=142 height=106 layout=responsive amp-img divdivdiv class=trans-pagebuttonPage 3button div class=trans-image amp-img class=trans-thumb alt=Page 3: · So you can listen the SOOHE tone make a double beat between these two signals Only on please set the mode switch USB position Then change the mode switch to CW position you src=https:reader034fdocumentsinreader034viewer20220421205e99e6d28876237e3e6fb0afhtml5thumbnails3jpg width=142 height=106 layout=responsive amp-img divdivdiv class=trans-pagebuttonPage 4button div class=trans-image amp-img class=trans-thumb alt=Page 4: · So you can listen the SOOHE tone make a double beat between these two signals Only on please set the mode switch USB position Then change the mode switch to CW position you src=https:reader034fdocumentsinreader034viewer20220421205e99e6d28876237e3e6fb0afhtml5thumbnails4jpg width=142 height=106 layout=responsive amp-img divdivdiv class=trans-pagebuttonPage 5button div class=trans-image amp-img class=trans-thumb alt=Page 5: · So you can listen the SOOHE tone make a double beat between these two signals Only on please set the mode switch USB position Then change the mode switch to CW position you...