Review on KJM VHF TX AIS Splitter by Sri Wells

Simple: connect the antenna to the VHF radio and listen to all weather channels, paying attention to the reception quality. I could hear 7 channels out of 10 that my radio can pick up. Now connect the splitter to a 12V power supply, connect it between the antenna and the VHF radio and check the weather channels again. In my case all were muted, some to an inaudible signal or none. Only the strongest channel could still be used. Likewise, the AIS device I connected it to did not show an AIS signal. All fuses are fine so I assume the unit is getting the power it needs, but there is no on/off switch or indicator lights to confirm this. Conclusion: my block in particular was broken from the factory, or it is simply a bad product. Anyway returned. I'll spend $$ on a splitter from a reputable marine electronics manufacturer.