11 meter yagi?

[Midnight Blue]

I'm wondering if I would benefit from having one, even though I have a Sirio 827.

[Admiral]

A Yagi will get you the dying embers of 11m DX by going directional, if you do go down that route then I personally would keep the Sirio too for omni stuff.
Obviously directional focusses your signal for better results, but it also cuts out 60% of the crap on RX from elsewhere too.

[26TM5890]

it's about 3 db difference between horizontal and vertical. most people using vertical on 11 meters

[Admiral]

it's about 3 db difference between horizontal and vertical. most people using vertical on 11 meters

Are you serious? A simple 3 ele Yagi will give at least 7dB gain over a vertical pole and at least 1dB per extra element.

[Auldgeek]

it's about 3 db difference between horizontal and vertical. most people using vertical on 11 meters

That's just the difference between the polarization planes though. You then need to factor in the front to back ratio, forward gain and beamwidth. You will soon find the yagi a far better proposition, especially if you can afford the space for 4 or more elements.

Therefore, yagi's are definitely better at concentrating your signal in one direction and also very useful at reducing unwanted signals or noise. Verticals by their nature are noisy.
Their advantage is also a disadvantage should you wish to talk to folk in different directions. The vertical cannot usually be beaten in these situations.

Definitely best if you can have both though, then your covered.

[prettypolly]

i use a 3 element quad vertically polarized ..works very well

[26TM5890]

it's about 3 db difference between horizontal and vertical. most people using vertical on 11 meters

That's just the difference between the polarization planes though.

Definitely best if you can have both though, then your covered.

that's exactly what i meant not talking about front to back etc etc

just saying that lot's of people using vertical antenna's on 11 meters that's all

[Sam P]

it's about 3 db difference between horizontal and vertical. most people using vertical on 11 meters

That's just the difference between the polarization planes though.

Definitely best if you can have both though, then your covered.

that's exactly what i meant not talking about front to back etc etc

just saying that lot's of people using vertical antenna's on 11 meters that's all

The polarisation on ground wave is important for local contacts, but is less significant after the wave has refracted through the ionosphere.

[Auldgeek]

The polarisation on ground wave is important for local contacts, but is less significant after the wave has refracted through the ionosphere.

Agreed. Even depends on the type of propagation as this will also affect it, especially 11m as it has "vhf" properties.
In general terms though, stations with directional antennas will have a better chance of hearing and working weaker dx stations.

Definitely have both if you can afford the space.

[Midnight Blue]

Thanks guys. I will make the space. I was thinking that most ops use vertical antennas. If I can achieve better results with a yagi, then it's worth having.

Thanks

[oh5nxo]

Only -3 dB between cross polarized antennas sounds alarming. 10..20...30, no? 3B

Juha

[Tim]

Forget gain, the performance will largely depend on your location, what the conditions are like and how high above the ground you have it. Sometimes you will find that a vertical antenna will perform better than a horizontal and vice versa depending on conditions and various types of propagation. The main advantage of a directional antenna is that you can loose a lot of unwanted stuff off the back of it but even then you can still get back scatter and strong side signals from it and if the other station is transmitting through a vertical antenna you won't always hear them better or bring in a better signal.

[ch25]

Difference between Yagi and vertical on DX is: I hear and work DX/ only background hiss.
Simple as that.
Chris.

[ROTEL240]

If for dx work and there was a pile up for a new dxcc a horizontal beam would be my choice, but for general dx work a vertical is more than up to the job.

[43Echo695]

Are beams on CB permitted by officialdom in the UK now?

73's