ÿþ<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head lang="en-GB"><title>Reception of local radio stations - Switch for two antennas</title> <META content="More local radios are received if two antennas are used. A small antenna switch is made of a coax T-adapter." name="description"> <META content="antenna switch, T-adapter, T-connector, coax, antenna socket" name="keywords"></head> <body lang="en-GB" bgcolor="#ddeeee"> <table border="2" bordercolor="#c0c0ff" bgcolor="#a0a0ff" width="775" lang="en-GB" align="center"><tr> <td align="center"><img style="WIDTH: 765px; HEIGHT: 124px" src="http://www.morefmradio.dk/Logo_moreFMradio.gif" align=middle alt="logo"> <HR size="2" color="#c0c0ff"><br> <table width="740" align="center"><tr><td> <table cols="3" border="2" bordercolor="#c0c0ff" bgcolor="#ffffad" cellpadding="11" align="center"><tr> <td border="2" bordercolor="#c0c0ff" bgcolor="#d0d0ff" width="80" valign="top"><font face="arial" size="3" color="#ffffff"><br><br><br>&nbsp; &nbsp; Content <table cellpadding="3" cellspacing="5" colls="1"> <tr><td bgcolor="#66aacc"><font face="arial" size="2" color="#ffffff"><a href="http://www.morefmradio.dk/index.html">Homepage </a></font></td></tr> <tr><td bgcolor="#66aacc"><font face="arial" size="2" color="#ffffff"><a href="http://www.morefmradio.dk/Signal_strength_and_interference.html">Strength and interference</a></font></td></tr> <tr><td bgcolor="#66aacc"><font face="arial" size="2" color="#ffffff"><a href="http://www.morefmradio.dk/Antenna_type.html">Antenna <br>type</a></font></td></tr> <tr><td bgcolor="#66aacc"><font face="arial" size="2" color="#ffffff"><a href="http://www.morefmradio.dk/FM_radio_receiver.html">FM radio receiver</a></font></td></tr> <tr><td bgcolor="#66aacc"><font face="arial" size="2" color="#ffffff"><a href="http://www.morefmradio.dk/Listening_test.html">Listening <br>test</a></font></td></tr> <tr><td bgcolor="#66aacc"><font face="arial" size="2" color="#ffffff"><a href="http://www.morefmradio.dk/Measurement_test.html">Measurement test</a></font></td></tr> <tr><td bgcolor="#66aacc"><font face="arial" size="2" color="#ffffff"><a href="http://www.morefmradio.dk/Summary_of_listening_and_measurement_tests.html">Summary of tests</a></font></td></tr> <tr><td bgcolor="#66aacc"><font face="arial" size="2" color="#ffffff"><a href="http://www.morefmradio.dk/Switch_for_two_antennas.html">Antenna switch</a></font></td></tr> <tr><td bgcolor="#66aacc"><font face="arial" size="2" color="#ffffff"><a href="http://www.morefmradio.dk/Replacement_of_ceramic_filters_in_radio_receivers.html">Replacement of filters</a></font></td></tr> </table></font></td> <td border="2" bordercolor="#c0c0ff"><font face="arial" color="#0000FF" size="4">Switch for two antennas</font><HR size="2" color="#c0c0ff"><font face="arial" size="3"> <br> It is an advantage to use two dipole antennas in connection with a stationary radio system so that the antenna with the strongest signal and the least splatter can be selected. In this way more weak local radio stations can be received in good quality. <br> <a href="http://www.morefmradio.dk/T-adapter_open.JPG"> <img style="WIDTH: 125px; HEIGHT: 120px" src="http://www.morefmradio.dk/T-adapter_open.JPG" align="right" hspace="10" alt="T-adapter, open"></a> <br> A small antenna switch with coax sockets can be used. However, I have not found such a switch on the market and have made my own of a coax T-adapter that is used to split an antenna signal to two receivers. <br><br> The T-adapter is opened cautiously, so it does<br><a href="http://www.morefmradio.dk/T-adapter_with_switch_open.JPG"> <img style="WIDTH: 125px; HEIGHT: 131px" src="http://www.morefmradio.dk/T-adapter_with_switch_open.JPG" align="right" hspace="10" alt="T-adapter with switch, open"></a> not break in the thin bending along the edge. Ring core and wires are removed. A hole is made in the side of the T-adapter, and a switch is fixed in the hole. The center pin of the switch is connected to the center terminal of the female socket. The two other pins are connected to each their center terminal of the two male sockets. The T-adapter is closed and the switch is ready to be used. <br><br> <a href="http://www.morefmradio.dk/T-adapter_with_switch_closed.JPG"> <img style="WIDTH: 125px; HEIGHT: 104px" src="http://www.morefmradio.dk/T-adapter_with_switch_closed.JPG" align="right" hspace="10" alt="T-adapter with switch, closed.JPG"></a> The two antennas are connected to the male sockets, and the female socket is put in the antenna socket on the back side of the receiver. If there is enough room over or beside the receiver a hand can easily be put in behind the receiver to operate the switch. <br><br> </font></td><td border="2" bordercolor="#c0c0ff" width="80" valign="middle" bgcolor="#d0d0ff"><font face="arial" size="3"><br><br><br></font><br><br></td></tr></table></td></tr></table><br></td></tr></table> <script language="javascript1.2" src="http://www.parameter.dk/counter/48c8b1faf410504fbe6301bc149ad788"></script> </body> </html>