A99

[Mark Scannura]

Question, does the A99 and similar multi piece antennas like the Imax radiate from the top section?

 

[wavrider]

http://cbradiomagazine.com/Feb 2007/The A99 - a best seller.htm

http://home.ptd.net/~n3cvj/antennagainmyth.htm

https://www.w8ji.com/end-fed_vertical.htm

A99 is basically a 1/2 wl vertical and radiates as such. Ground plane kits help eliminate come of the cmc common with this type of antenna.

 

[357magnum]

Always thought about the GP kit for mine and never bit the bullet . But that's a whole other thread to get re-hashed again . Some have said yes others no .

 

[kopcicle]

https://www.worldwidedx.com/threads/a99-question.220046/page-2#post-601655

I'm not much for linking to this particular site but this is the exception

http://www.copperelectronics.com/discus4/messages/7750/9224.html?1009557886

Make up your own mind ...

 

[undertaker]

Ran one for years talked all over the world.............

 

[kopcicle]

Ran one for years talked all over the world.............

So, you never imagined there was something better ?

 

[Ranch55]

I'm currently running the A-99 . I use it as my quick and easy backup whenever I need to take down my main antenna for maintenance.
It seems to transmit almost as well as my 1982 model Penetrator 500, but that is all.
The A-99 is no where as good on the receive as my Penetrator 500 .....Doesn't even come close.
And it also pulls in a lot of RF type static noise, and I do mean a lot .....
I am way out in the very rural ranch country, so no city static noises, no neighbors, and no overhead power lines.
It is just plain noisy on the receive.

 

[dave457]

So, you never imagined there was something better ?

There is always something better no matter what you have,

If its in your budget and works for you, thats all that matters

 

[Mark Scannura]

Does the A99 radiate from the top section?

 

[wavrider]

Mark it radiates along the length of the 1/2 wave vertical to an extent.

Current maxima is above the feed point and below the tip of the vertical.

And in some cases when installation is not correct then the coax will also be part of the antenna and radiate also.

1/2 wl vertical radiation pattern
https://www.google.com/search?q=hal...=2ahUKEwjEwO7mvrPaAhVCUK0KHRGBB70QsAR6BAgAEDo

A99 vertical radiation pattern

https://www.google.com/search?q=a99...=2ahUKEwjjgKGAv7PaAhVMiqwKHYjSDcgQsAR6BAgAECo

 

[wavrider]

A lot of pictures so YOU CAN DETERMINE for yourself how a 1/2 wl verticle radiates.

 

[357magnum]

Ahh the memories , my first base antenna was a 1/4 wave GP from RS I believe it was under $20 it got destroyed in the blizzard of "78" here in RI . I went to a Big Stick then an A-99 receive on that cheap RS antenna was superb compared to the Fiberglass ones . jmo

 

[Mark Scannura]

A lot of pictures so YOU CAN DETERMINE for yourself how a 1/2 wl verticle radiates.

Yes, thanks for that.

 

[Staybolt]

Cb neigbor down the road ran one for years and loved it. The ice busted it and now he runs a p 500 and isnt quite as happy.

 

[Low_Boy]

I have had a A99 up for about 7 or 8 years works great. And it will tune with my HF internal tuner for 12, 10, 15, 17 and I do not recall 20 meters. So I am very happy with it. I can hear stations that my friends cant and they run 2000's I am up about 23' at the base.