DDRR Antenna Loop (Directional Discontinuity Ring Radiator)

[Shadetree Mechanic]

I think this is the kind of antenna that Motormouth Maul has on the top of his jeep. It seems to be too close to the steel roof but I guess that's how it is supposed to work. Can anyone explain what this is and how it works or point me in the right direction? Thanks!

http://alphaxray.info/ax05-dual-ddrr-cb-radio-antennas.html#.XHKpKpXsZLM

 

[Shadetree Mechanic]

More info:
https://cqdx11.com/cb-radio-antennas/cb-radio-antennas-at-barracuda-base/

 

[Alan Blackmon]

I recall reading about the DDRR antenna in a ARRL antenna book I bought as a kid back when I got into CB radio in the 70s. I was fascinated by this antenna. Maybe it is time for me to revisit it?

 

[Mustang 131]

He showed me his mobile DDRR antenna years ago...man does he get out. Pretty sure it doesn't have the gain of a 1/4 wave type. But what do I know. Call him, he loves to talk...and actually knows what he's talking about.
My friend has a commercial made 11m version we used as a "luggage rack" antenna. It was completely stealth on his Dodge. I recall he had another one new in the box, I'll see if I can get a picture.

 

[sp5it]

http://www.antentop.org/005/files/mma005.pdf
http://www.orionmicro.com/ant/ddrr/ddrr1.htm
http://www.cqham.ru/rk3zk/1-2-2.htm

 

[Mustang 131]

Found this gem..a bargain at 1/2 the price.

https://www.ebay.com/itm/JoGunn-SUP...e=STRK:MEBIDX:IT&_trksid=p2060353.m1438.l2649

 

[Slowmover]

The name sure makes it seem fraudulent. Super Sinner

 

[Road Squawker]

Anytime I see an advertisement for a co-phased antenna, I pretty much know that it is mostly B.S.

This antenna is similar to designs found in the arrl handbook and manufactured commercial antennas.

they have a high radiation angle , sometimes referred to as a "cloudwarmer" and perform best for local comms.

This basic design works, but, there is nothing "magic" about it.

 

[Shadetree Mechanic]

I am going to get some parts together and see if I can build one out of stuff I have laying around.

 

[AudioShockwav]

There is another thread here somewhere with some info about this antenna.
They were used by the Navy back in the day.
YouTube had a vid of mmm talking on one on top of a pickup one time.

73
Jeff

 

[brandon7861]

YouTube had a vid of mmm talking on one on top of a pickup one time.

73
Jeff

 

[Shadetree Mechanic]

I surely would not put my head anywhere near that..... Kinda cool how the spark is modulating.

 

[AudioShockwav]

Have a look at this Thread, the DDRR shows up about page 2.

Here is a intetesting Antenna to think about

Ok, we have some great threads about different antennas here, so I want to throw something different out here to talk about. Anyone ever run one of these? The The Joe Gunn Super Sinner RV Antenna. https://www.jogunn.com/antennas/mobile-rv/ They claim both vertical and horzontial with 1 feed...

www.worldwidedx.com

73
Jeff