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                > FM-Antennes> High Gain ColinearAluminium ¾ Wave FM antennes>FM high gain colinear aluminum 3 4 wave antenne patatzak
                              FM broadcast antenne HIGH GAIN COLINEAR ALUMINUM ¾ Wave Bekijk groter
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                                • FM broadcast antenne HIGH GAIN COLINEAR ALUMINUM ¾ Wave
                                • FM broadcast antenne HIGH GAIN COLINEAR ALUMINUM ¾ Wave
                                • FM high gain colinear aluminum 3 4 wave antenne 1, 3 KW
                                • FM high gain colinear aluminum 3 4 wave antenne 1, 3 KW
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                            FM high gain colinear aluminum 3 4 wave antenne patatzak

                            PCS-Electronics

                            Nieuw

                                FM broadcast antenne HIGH GAIN COLINEAR ALUMINUM 3 4 Wave ook wel bekend als Patatzak-antenne.

                                Verkijgbaar in 2 uitvoeringen:

                                • 3/4 Wave 1KW N connector
                                • 3/4 Wave 3KW 7/16 DIN

                              Meer details

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                                    € 247,93

                                    Dit product wordt niet los verkocht. U moet minstens 1 stuks toevoegen voor dit product.

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                                          • Vooraf frequentie instellen

                                        Model 

                                          • 3/4 Wave ExterminatorII 1KW N connector

                                          • 3/4 Wave ExterminatorII 3KW 7/16 DIN

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                                AantalPrijsU bespaart
                                2 € 242,97 Tot € 9,92
                                3 € 240,49 Tot € 22,31
                                4 € 238,01 Tot € 39,67
                                5 € 223,14 Tot € 123,97
                                10 € 210,74 Tot € 371,90

                              Meer informatie

                                Product discription:


                                Looking for a solution giving gain similar to 2 bay vertical dipoles with perfect omnidirectional coverage and have some space available at the top of a roof or a tower? Than this is the antenna for you. 2-dipoles mounted at the side of the tower will not give perfect omni-directional coverage; this antenna at the top of a tower will. Produced to exacting standards using state of the art electrical and mechanical designs resulting in superior performance and long service life. When measured against a standard 1/2 wave dipole the 3/4 Wave delivers a massive 5.15 dBi gain across the entire FM Band. All RF connectors are teflon components with specifications that exceed required ratings. Optional we can fully tune your antenna. It then comes fully tuned and assembled, the ExterminatorII can be installed on your tower or mast in a matter of minutes.

                                If you request us to tune the antenna then write your desired frequency during check-out under comments, we then tune your antenna for you. You can always tune your antenna alone with SWR meter and instructions. Note that although antenna is tuned at the factory it is sometimes necessary to make a small adjustment depending on for example nearby objects etc. Some parts may also move slightly during shipping so remember to re-tighten all screws. Antenna ships in fully assembled form, but the two sections are collapsed for easy transport. You will only have to release two screws and extend the two telescopic sections all the way to the two black marker circles, than fix the screws again.

                                What's new in version II:
                                - Singificantly improved connector assembly 
                                - Several other small improvements

                                Advantages:
                                - Perfectly circular coverage when mounted on top of a tower/pole.
                                - Matches or outperforms 2 dipoles
                                - Easier to mount than 2 dipoles

                                Disadvantages:
                                - Not wideband, requires tuning (we do this for you)
                                - NOT SUITABLE for people who don't know how to operate SWR meter or perform simple antenna tuning (take wideband dipoles or multi-bay systems instead please)

                                How much ERP will my transmitter have with this antenna?
                                1KW transmitter: Your ERP will be increased 3dB (2x), 1KW transmitter will give 2KW ERP*
                                2KW transmitter: Your ERP will be increased 3dB (2x), 2KW transmitter will give 4KW ERP*
                                (*) not taking coaxial cable losses into account

                                Tuning instructions:
                                It is recommended that you re-check the SWR before putting antenna into service, nearby objects can slightly de-tune the antenna!

                                1. If you received your antenna pretuned extend the two telescopic sections until the two black marker rings show.
                                If you are retuning to another frequency extend the antenna as shown below (loosen screws and extend the 2 telescopic parts). 
                                If tuning for around 88MHz: Extend fully 
                                If tuning for around 100MHz: Extend 50% 
                                If tuning for around 108MHz: Extend about 25% 

                                2. Mount the bottom part of the antenna to the intended metal pole and tighten with screws firmly 

                                3. If you received antenna pretuned, do not loosen gamma rod.
                                If this is a new untuned antenna or if you are re-tuning loosen the gamma strap so that the gamma rod can move in and out with a bit of effort. Now set the rod so that it is about 1/3 in the black gamma match tube. 

                                4. Connect RigExpert SWR analyzer (AA-170 or better), power it up, press 4 for SWR measurement. (read the PS below if you do not own one).

                                5. Move center frequency to frequency of choice (use Freq - and Freq + buttons), set range to about 20MHz for a start, 
                                you can reduce range later when you get close to the frequency of choice. 

                                6. Press OK to start measurement. The curve minimum needs to be close to zero at the desired Frequency. 

                                7. Change the length of the antenna until you get best SWR at desired frequency. 

                                8. Change gamma rod position until you get best SWR at desired frequency. 

                                9. Repeat 7 and 8 until you get minimal SWR reading possible. 

                                10. Tighten all screws 

                                11. Check SWR again. If needed, correct. 

                                12. You're done! 

                                PS: If you don't have antenna analyser feel free to use SWR meter as well, however do this at minimal power that still makes it possible to get a decent reading out of your SWR meter and at the same time does not endanger the output stage of your transmitter. Never read SWR off the LCD display of your transmitter, USE A REAL SWR meter or antenna analyser.

                                Important: Due to large size and irregular shape of these packages the website often gets shipping cost wrong. Also sometimes we have to use wooden case which adds about 100 euro to the cost of antenna. For exact shipping cost please contact our sales department, be sure to give them your exact address and they will quote you shipping. 

                                Recommended accesories: Grounding kits can be purchased here, they ensure lightning protection. They should be installed at the antenna, at the tower base and at the point of entrance into transmitter building. Also use self-sealing tape on connectors, it fuses into rubber and protects moisture from entering your coaxial cable and antenna system.

                                Some background:
                                There are several similar designs out there, all based on the old SIRIO design. Most of those use very poor gamma match from the CB-radio version which blows very fast. Those also use cheap plastic connectors. Pretty much all of them use low-cost cast heads. Ours is the only version which comes with high-grade CNC machined head. Check the photos. Some of the guys who sell these antennas also claim that they invented them even though the antennas are identical to the old SIRIO design. Ask these guys for patent number and see them strugle.

                                 

                                Technical specs:


                                Frequency range: 87.5 - 108 MHz (check our website for VHF TV version)
                                - Max power rating: 900-1000W (N), 3KW (7/16) - 4kW (EIA)
                                - Impedance: 50Ω unbalanced 
                                - Gain: 5.15 dbi (Upgrades 1KW tx into 2KW ERP tx)
                                - Radiation (H-plane): 360° omni directional 
                                - Polarization: Vertical 
                                - Connector: "N" - 7/16" DIN - EIA
                                - 6MHz Bandwidth at S.W.R. 2:1: 
                                - S.W.R. at res. freq.: ≤ 1.5:1 
                                - Feed system: Gamma match
                                - Option -Tuning: We can pretune the antenna for you (retuning by length adjustment and gamma match adjustment)

                                 

                                Pretuning:

                                Indien u kiest om uw antenne te laten tunen op frequentie, geeft u dit aan middels het vakje aan te zetten (Vooraf frequentie instellen)

                                tijdens het afronden van uw bestelling geeft u in het commentaarveld (Stuur een bericht, Indien u een opmerking over uw bestelling wilt toevoegen, dan kunt u deze hier invoeren.), uw frequentie in

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