2 antennas to one scanner

[I_Am_Infinite]

Is there something that can be used to combine 2 antennas, specifically Yagi antennas into 1 scanner without them interfering with each other? Before I tried a bnc t adapter but the interference and loss made me loss quite a bit of signal strength.

 

[buddrousa]

More information is needed.
Are they the same type and band antennas?
How are they mounted?

 

[I_Am_Infinite]

More information is needed.
Are they the same type and band antennas?
How are they mounted?

2 800 MHz yagis, exactly same 10 db antennas, pointed in 2 different directions to try to get 2 different towers on one scanner.

I already tried before but it was causing interference and dropping the signal on both towers when I had them connected to the scanner with a T shaped bnc adapter. Just wondered if there is another way to hook both to one scanner without interference and not dropping signal

 

[mmckenna]

It can be done, but "T'ing" them together won't work. You need to build a phasing harness to combine them correctly.

 

[buddrousa]

If I remember also Spacing comes into play also.

 

[wtp]

just get another radio...problem solved !
you can never have too many radios ...just look at bud's list above ^

 

[I_Am_Infinite]

It can be done, but "T'ing" them together won't work. You need to build a phasing harness to combine them correctly.

I'll look that up cause I don't know what that means. Thanks for info.

just get another radio...problem solved !
you can never have too many radios ...just look at bud's list above ^

I agree there is never enough, if I cud I would... Just send me 500$ and I'll be right on that 🤣

If I remember also Spacing comes into play also.

They are about 2 feet apart, on above the other

 

[wtp]

just a couple of years ago i bought a used pro-164 for $25.
analog is still useful !
at my desk is the pro-2001
pro2004
pro2035
bc170
bc855xlt
handy for space station, frs, gmrs. murs, businesses, mil air, milair refuel, local airport, and the DEA.

 

[KB2GOM]

just get another radio...problem solved !
you can never have too many radios ...just look at bud's list above ^

too many radios . . . is that even "a thing"?

 

[I_Am_Infinite]

just a couple of years ago i bought a used pro-164 for $25.
analog is still useful !
at my desk is the pro-2001
pro2004
pro2035
bc170
bc855xlt
handy for space station, frs, gmrs. murs, businesses, mil air, milair refuel, local airport, and the DEA.

Nothing around me is analog, it's on on state system for Indiana or its own trunked system. Most of it besides 2 of the 6 things I monitor are simulcast. It sucks wish they all just stayed in 150s MHz even if just digital conventional, or 150s p25 trunked it made things so much easier.

I'm in the worst spot for signal, at my house I get 1 bar cell service it's bad in my town.

too many radios . . . is that even "a thing"?

If I had the money I'd have a couple more SDS 200s, a SDS 150, and an SDS 250 when it comes out, there truly is never enough scanners 🤣

 

[I_Am_Infinite]

I did look up phasing harnesses, that seems way out of my league, I'm way to dumb for that. I seen scanner master had them a long time ago but page ain't available no more.

I can't get up to top of tower now either I actually tried couple months ago to get a tree care guy I used before to get me up there for a decent price but he's to busy and few others don't seem want to mess with it and couple others want way to much money. I'm pretty broke really always.

Maybe I can figure out something I can do, or maybe someone gots more ideas

 

[buddrousa]

Just info for you, build your own cophasing harness. I will be 68 my birthday and just put up a Rohn 50 footer for someone. I dug the 3 foot by 3 foot by 3 foot hole mixed 30 bags of ready mix by hand let it cure for a week then stacked the 5 10 foot sections of Rohn 25 by hand well my Factory Rohn 25/45 Jin Pole.

 

[I_Am_Infinite]

Just info for you, build your own cophasing harness. I will be 68 my birthday and just put up a Rohn 50 footer for someone. I dug the 3 foot by 3 foot by 3 foot hole mixed 30 bags of ready mix by hand let it cure for a week then stacked the 5 10 foot sections of Rohn 25 by hand well my Factory Rohn 25/45 Jin Pole.

I read about it, I truly think it's way over my head to do it, I think I'm to dumb to even try, I'm sure I'd screw up everything and Im essentially broke so trying to get all the stuff needed, then if I screw up multiple times trying..

It seems like learning another language... Even trying to understand what I was reading was making me crazy

 

[buddrousa]

One of the others may chime in I know this is for 150 and 450 but it just may work for you at $75.00

Diamond Antenna SS770R Diamond Antenna Phasing Harnesses | DX Engineering

Free Shipping - Diamond Antenna Phasing Harnesses with qualifying orders of $99. Shop VHF/UHF Antenna Power Dividers at DX Engineering.

www.dxengineering.com

 

[I_Am_Infinite]

One of the others may chime in I know this is for 150 and 450 but it just may work for you at $75.00

Diamond Antenna SS770R Diamond Antenna Phasing Harnesses | DX Engineering

Free Shipping - Diamond Antenna Phasing Harnesses with qualifying orders of $99. Shop VHF/UHF Antenna Power Dividers at DX Engineering.

www.dxengineering.com

That would be great if it will work. I wonder if the have bnc version. With bnc in and bnc out, that wud be amazing. Is try it at end of my coaxs til I can get up there then I can try did it up on tower.

 

[I_Am_Infinite]

Seen this one to but I'm not sure what wud work, if the lengths gotta be different because of difference in height of each antenna and length of the lmr 400

ASC237 - Antenna Specialists Co-Phase Harness For Dual Antennas

ASC237 - Antenna Specialists Co-Phase Harness For Dual Antennas

www.wearecb.com

 

[kc2asb]

just a couple of years ago i bought a used pro-164 for $25.
analog is still useful !
at my desk is the pro-2001
pro2004
pro2035
bc170
bc855xlt
handy for space station, frs, gmrs. murs, businesses, mil air, milair refuel, local airport, and the DEA.

Great radios. I also have a Pro-2001, Pro-2002, and Pro-2006, all working and still useful. Still a lot to hear on analog!

 

[KevinC]

What do you expect to gain by combing the two yagi's?

 

[mmckenna]

Seen this one to but I'm not sure what wud work, if the lengths gotta be different because of difference in height of each antenna and length of the lmr 400

ASC237 - Antenna Specialists Co-Phase Harness For Dual Antennas

ASC237 - Antenna Specialists Co-Phase Harness For Dual Antennas

www.wearecb.com

A CB radio or 2 meter/70 centimeter phasing harness isn't going to work for 800MHz. Phasing harnesses are tuned for the frequency in use.
Also, they need to go at the antenna, so if you can't get to the top of the tower to install it, it's not going to help. Installing one, even one tuned correctly, at the radio isn't going to help.

Based on what you are saying, an option is to just go with a single high gain omnidirectional antenna.

Or, use an antenna switch to select the one you want to use.

And I agree with Kevin, what's the use case here? If these antennas have been up there for a while, how were you using them before?

 

[nd5y]

It's in post #3.

2 800 MHz yagis, exactly same 10 db antennas, pointed in 2 different directions to try to get 2 different towers on one scanner.

Two yagis pointing in random directions using the same feedline won't work with or without a phasing harness.