I just paid 23.
Question: I see that the antenna impedance is 50ohm. The scanner uses 75 ohm. I would like to think that using 75 ohm coax for lead in is ok and there is very little, if any loss, if the antenna system is used for receive only and not transmit.
I am going to give it a try. What do you think?
Mike
Has anyone tried this antenna? Reviews?
Question: I see that the antenna impedance is 50ohm. The scanner uses 75 ohm. I would like to think that using 75 ohm coax for lead in is ok and there is very little, if any loss, if the antenna system is used for receive only and not transmit.
I am going to give it a try. What do you think?
Mike
just plug them up with a T conenctor. there are some null issues but mostly you dont care. it will work fine.I'm hoping I can use this with another antenna at the same time on a single scanner. Anyone have experience with this? I presume I need to split the signal at the antenna and feed just one coax.
Not sure where your data comes from. The scanner and antenna spec at 50ohm.
You won't have an issue. Even if you were transmitting, you wouldn't notice anything other than maybe a 0.1 or 0.2 increase in the SWR.
Just use good quality cable and connectors. Seal -everything- that is outdoors really well. RG-6 and the like is good cable if you keep the runs short. If you are expecting to run 100 feet of RG-6 at these frequencies, you will be losing most, if not all, your antenna gain to feed line losses. The higher you go in frequency, the more pronounced feed line loss is. You really should be looking at higher grade coax if your run is longer than 20-30 feet. LMR-400 is a good place to start. LMR-600 or 1/2 inch heliax would be a much better solution.
You can crunch the numbers yourself here: Coax Calculator
3 more! That's awesome, they will make great Christmas presents.I just ordered 3 more.
3 more! That's awesome, they will make great Christmas presents.
I'm hoping I can use this with another antenna at the same time on a single scanner. Anyone have experience with this? I presume I need to split the signal at the antenna and feed just one coax.
Look up duplexers and triplexers on ebay. Thats what im using right now for my scanner and sdr.