best dual band antenna?

[RyonI]

Hello,
Newbie here

I have AOR AR8000 and sony airband scanner
I want to use an external antenna for the roof.
I'm using 50meters of rg-58 cable.


- which one of the below are consider better? I prefer the second one because its cheaper and seems to be of good quality. but i heard good reviews about the d-777 so i would like to hear users before buying.
and I'm not a professional or something, just want to improve performance


D-777
https://www.ebay.com/itm/Diamond-D-...534252&hash=item23847620c6:g:hWwAAOSwlY1ZFb3s

or

https://www.ebay.com/itm/DBAB-Dual-...344053?hash=item4400cf07b5:g:ke8AAOSw4CFY3Ndi

WBV-60 Watson Scan-King Wideband Vertical


Thanks
Jonathan

 

[AI7PM]

At the end of a 50m (164ft.)long run of RG58? It won't matter. The 10db plus loss you will experience in 50m of RG58 will hve you hearing very close in stuff only.

 

[jonwienke]

^^^What he said. 50 meters of RG-58 cable is going to suck the life out of any antenna you connect to it.

 

[RyonI]

At the end of a 50m (164ft.)long run of RG58? It won't matter. The 10db plus loss you will experience in 50m of RG58 will hve you hearing very close in stuff only.

Interesting.
So what is the common solution to this? maybe an amplifier or some filter?



thanks for your reply

 

[mmckenna]

Yeah, you need to use better coax. 50M of RG-58 certainly isn't doing you any favors.

As for the antenna….
The Watson WBV-60 "claims" 500KHz to 1500MHz, which I find dubious. Technically any antenna, piece of wire, nail, paper clip, etc. will "receive" all over the place, just not very well. When a manufacturer advertises an antenna like this, I get very skeptical. It really makes it sound like they either don't understand what they are selling, or they are trying to deceive the customer, something that happens often in the hobby industry. That alone would probably prevent me from spending money on it.

Not sure about the other two antennas. I've never used either one. Diamond is at least a company I've heard of. The DBAB has a Type N connector, which would be my preference over the UHF/SO-239/M connector on the Diamond.

 

[jonwienke]

Interesting.
So what is the common solution to this? maybe an amplifier or some filter?

Neither. The best solution is to redo your antenna setup so that you don't need so much coax. The shorter the run, the better. The next best approach is to buy better coax, like LMR-400. But that gets expensive.

An amplifier can help to some degree in some cases, but at the cost of adding noise to your signal, as well as possible overloading and intermod interference. Figure out a way to locate your antenna and radio so you don't need so much coax, like 15-20 meters at most.