Anyone ever swept the MX-3000N Triplexer?

[JoshuaHufford]

I would like to use one of these to split up the signal from the antenna I'm currently using for my railroad audio feed. According to the specs the lowest split on this is 1.6-160MHz, and of course the railband tops out at 161.5725. Wondering if I will loose any performance if I use this or not. I don't have the equipment to do this myself.

Thanks!

 

[Ubbe]

I've swept my triplexer MX627 and the result show that you shouldn't have any problem even going 5MHz out of spec. It's difficult making a low pass filter that pass 160MHz but attenuates enough of 162.5MHz to be noticed.

/Ubbe

 

[prcguy]

I've swept my triplexer MX627 and the result show that you shouldn't have any problem even going 5MHz out of spec. It's difficult making a low pass filter that pass 160MHz but attenuates enough of 162.5MHz to be noticed.

/Ubbe

The response has a lot of ripple, did you terminate the unused port?

 

[Ubbe]

Measurements are a couple of years old and I probably didn't bother to terminate, or even calibrate. You can see that the signal goes above the 0dB line. I just wanted to see what the actual ranges where. My antennas doesn't hold 50 ohm over the whole ranges of the splitter anyhow. My main concern where if the 1-60MHz spec would leave any signal remaining from a 80Mhz frequency that our police and rescue used, and it was just a 1dB loss so the spec where actually 1-80MHz. And the 110-170MHz range specified are actually 100-200MHz.

/Ubbe