Scanner Antenna Question ---(for 700 MHZ+ and 30- 500MHZ)

Scanner Antenna Question ---(for 700 MHZ+ and 30- 500MHZ)

Post by drag » Tue, 04 Feb 1997 04:00:00

I have a question about scanner antennas. I have built a antenna to pick
up freq. from 30MHZ to 500MHZ and I have also built a discone antenna to
pickup 700MHZ and above frequencies. My question is;

-should I put a y-connector on my roof to connect both of them or should
I run two seperate 50 ohm coax cables directly to my scanner and have
the y-connector connected directly to my scanner? The reason why I ask
this question is that I was wondering if I would get crossover
interference if the y-connector was joined to early in the antenna
signal detection phase. This probably sounds like a stupid question, but
I thought I should ask it anyways before I proceed with this project.

Any help or suggestions would be greatly appreciated.
Norm B.

 
 
 

Scanner Antenna Question ---(for 700 MHZ+ and 30- 500MHZ)

Post by T. J. » Wed, 05 Feb 1997 04:00:00



> I have a question about scanner antennas. I have built a antenna to pick
> up freq. from 30MHZ to 500MHZ and I have also built a discone antenna to
> pickup 700MHZ and above frequencies. My question is;

> -should I put a y-connector on my roof to connect both of them or should
> I run two seperate 50 ohm coax cables directly to my scanner and have
> the y-connector connected directly to my scanner? The reason why I ask
> this question is that I was wondering if I would get crossover
> interference if the y-connector was joined to early in the antenna
> signal detection phase. This probably sounds like a stupid question, but
> I thought I should ask it anyways before I proceed with this project.

> Any help or suggestions would be greatly appreciated.
> Norm B.

I think you'll get the best use if you run seperate coax lines to your
shack and the use and ANTENNA SWITCH to bring one antenna or the other
into use at a time. Hooking both up at once could degrade overall
performance of both.
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