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OU5U Denmark flag Denmark

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Here is an easy way to give your vertical a good f/b (2-3 s units) and aproxx. 4 dB gain. As I only have one vertical (flagpole with a thick cubber wire from top to bottom) in the garden I have to change tuner and length of reflector every time I shift band. Having done that 3 years now, its no big deal, as I have it all prepared. I suggests that you start with the 40m version.

How to tune the antenna: Turn your transmitter on 1-5 watt. Start with the 12 meter vertical, tune the antenna ATU (not the one in your shack) for swr 1:1.

Attach the reflector. You will find that the swr will change. What you have to do now is, to look at your fieldstrenght meter while working on the lenght of the reflector and the ATU. Continue for best swr, should be close to 1:1.

Be aware that reflector-length maybe a little different, it all depence of your ground and ground system (radials) I have 1.5 km of different length, cubber wire in the garden, remember - the more the better.

Distance from ground to the horizontal part of the reflector 10-15 cm.

You might wonder how the reflector stays where you want it to be? I have a ground peg and 30 cm. nylon rope attached to the point where the sloping and horizontal part meets. That means you can hold the reflector in position and in a few seconds change the beam direction of the antenna.

How I`ll know that the ant. works?  Make at simple fieldstrenght meter - place it 30-40 meter infront of the ant. and tune reflector/ATU until you see a stronger signal compared to the vertical without the reflector.

If you have problems with the set-up - give me a call, either on skype or when you hear me on the band. GOOOD luck.

                                    

    

 

My 2 ele. vertical (flagpole-VDA) antenna for 20 meter Gain 4 dB

F/B 20 db and a very low angel of rediation aproxx.

15-20 degrees.

More info and details go to

         Google-   (VE3IKV verticals)

http://www.va3cco.com/images/2015luncheon/VE3IKV_Verticals_VDAs.pdf

Be aware that the feeding point must not exceed 7 meter, if so, the take off angle will go from 15 to 50 degrees

 

Matching antennas can be difficult at times.

 

My rx antenna f/b 25-30 dB

 

 

      K3

Mobile rig ft857d

 

Mobile - Hustler for all bands

                                                                         

                                          

          Those were the days - "I used to have a Vespa myself"

If you are connected to skype feel free to give me a call .Skype Me?!

 

 

Henry! -I don`t care if you can talk to people on Hawaii One      more antenna in the garden and I`ll kill you.

 

                         Foxhunting

                                                    

                                                            My Australian shepheard dog Exie

                 15. of sept.  2016   was a sad day as I lost my best friend Exie.

                                                                              My new dog "Enna"

Many thanks for looking me up - I have been active since 1962. Mostly to find on cw, using a SCHURR key.

Earlier callsigns OX3DX and OY3DX

 

"Give Ireland back to the irish"

 

                                                        My QTH

                                                               Play 24 hour timelapse | Play 30 day timelapse

                                           Click and look how the WX are near my QTH

 

8014894 Last modified: 2017-04-06 08:12:56, 14706 bytes

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