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siro SY27~3 vagi antenna; putting together
Topic Started: Thursday, 24. September 2015, 22:56 (2,434 Views)
Cozzmik
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26 Charlie Tango 465

RadioDaze
Friday, 25. September 2015, 10:37
Cozzmik
Friday, 25. September 2015, 10:31
SY27-3 the clue is in the name ;)


27mhz and 3 element :doh: :clap:
How did you work that out, under electrical data (the important bit) it says:

– Frequency range: tunable from 26.5 to 30 MHz

No mention of 27 there :clap: :cheers:

How does it get tuned.... a scotch mist extender? or a Cozzmik ATU ?

Oh dear :wave:




I worked it out by the original instructions that came with my sy27-3...thats how :whistle:


As an owner of said antenna i gave info :thumb:

and calm down dear your getting all Radiodaze again (a name used by anyone getting all stroppy when someone disagrees)

Edited by Cozzmik, Friday, 25. September 2015, 10:51.








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Farmer Richard
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26 Charlie Tango 986

That is to say if you have a 27-3 model put together as instructions and without the need to cut the SWR will be 1:1 from 27.200 to 27.800
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RadioDaze
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Farmer Richard
Friday, 25. September 2015, 10:41
Just looked and all the models for sale seem to be 27-3 models.
Perhaps yours was old stock?
More importantly is what model Andy has and what his instructions say.
Mine is an SY-3 (on the box) and this is the manual and for 27.5 it says cut.

http://www.sirioantenne.it/product-manual/Id-098_10-09-2011.pdf

If you don't, it is your own choice.
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Deleted User
Deleted User

Yep your right Geoff,it does say cut it but if you can adjust the element by sliding it and get the same result why cut it.............................

So if cut mine for 27.500,what do i do if i want to then use it on 26.500 im :censor: .............................
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Cozzmik
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26 Charlie Tango 465


Time to :wave:

Edited by Cozzmik, Friday, 25. September 2015, 10:49.








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Farmer Richard
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26 Charlie Tango 986

Or maybe its this?
http://www.dnd.hu/uploads/termek_doc/Sirio_SY_27-4.pdf
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Nubster
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26 Charlie Tango 050

Plus how long have you owned and been using a beam Geoff I didnt think you thought highly of people using them

Life is too short, so ave a laugh now n then never know you might like it
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Farmer Richard
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26 Charlie Tango 986

And this is my last comment on this.
To repeat.
"More importantly is what model Andy has and what his instructions say."
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RadioDaze
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Lagerland
Friday, 25. September 2015, 10:47
Yep your right Geoff,it does say cut it but if you can adjust the element by sliding it and get the same result why cut it.............................

So if cut mine for 27.500,what do i do if i want to then use it on 26.500 im :censor: .............................
Thanks Dave.

If you want to drill holes you could try that and shorten the elements that way. Depends if you are going to be floating about into amateur bands. I knew for fact I won't be so was cool for the cut. Chop Chop :pirate2:

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RadioDaze
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Nubster
Friday, 25. September 2015, 10:50
Plus how long have you owned and been using a beam Geoff I didnt think you thought highly of people using them
This is not relevant to the original post, which is getting the beam working nicely.

The original poster says the antenna is an SY-3 in the topic title.

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Deleted User
Deleted User

Andy had the destructions,he just didnt understand them.........................
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Cozzmik
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26 Charlie Tango 465

RadioDaze
Friday, 25. September 2015, 10:58
Nubster
Friday, 25. September 2015, 10:50
Plus how long have you owned and been using a beam Geoff I didnt think you thought highly of people using them
This is not relevant to the original post, which is getting the beam working nicely.

The original poster says the antenna is an SY-3 in the topic title.

Read sy27-3 :RTFM: NOT SY-3


27 as in 27mhz.... :muppet:








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Nubster
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26 Charlie Tango 050

RadioDaze
Friday, 25. September 2015, 10:58
Nubster
Friday, 25. September 2015, 10:50
Plus how long have you owned and been using a beam Geoff I didnt think you thought highly of people using them
This is not relevant to the original post, which is getting the beam working nicely.

The original poster says the antenna is an SY-3 in the topic title.

It is relevant when your telling people how to use something that not so long back you said you had no idea how they worked and was not interested in using one .because if your giving out information you should at least know what you are talking about
Edited by Nubster, Friday, 25. September 2015, 11:13.

Life is too short, so ave a laugh now n then never know you might like it
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RadioDaze
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Nubster
Friday, 25. September 2015, 11:13
RadioDaze
Friday, 25. September 2015, 10:58
Nubster
Friday, 25. September 2015, 10:50
Plus how long have you owned and been using a beam Geoff I didnt think you thought highly of people using them
This is not relevant to the original post, which is getting the beam working nicely.

The original poster says the antenna is an SY-3 in the topic title.

It is relevant when your telling people how to use something that not so long back you said you had no idea how they worked and was not interested in using one .because if your giving out information you should at least know what you are talking about
I do, that is the thing.

Ultimately I am trying to assist, that is my motive, what's yours ?
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Nubster
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26 Charlie Tango 050

RadioDaze
Friday, 25. September 2015, 11:14
Nubster
Friday, 25. September 2015, 11:13
RadioDaze
Friday, 25. September 2015, 10:58

Quoting limited to 3 levels deep
It is relevant when your telling people how to use something that not so long back you said you had no idea how they worked and was not interested in using one .because if your giving out information you should at least know what you are talking about
I do, that is the thing.
PMSL Yeah right you do

Life is too short, so ave a laugh now n then never know you might like it
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RadioDaze
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Nubster
Friday, 25. September 2015, 11:15
RadioDaze
Friday, 25. September 2015, 11:14
Nubster
Friday, 25. September 2015, 11:13

Quoting limited to 3 levels deep
I do, that is the thing.
PMSL Yeah right you do
Bit quick to quote me there, there is a question for you, that needs answering before anything more is said.
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quazar one
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26CT1145 / 163CT1145

Am asuming it is old stock Richard am at work atm but will check the instructions that came with it and compare them with ones mark gave me when I get home
Remember radio is a hobby forget that and you cease to enjoy it what ever radio,s you own !!! if you want to escape the hubbub of daily life for a while then discover our lovely inland waterways
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Cozzmik
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26 Charlie Tango 465

Im sure it will go together fine Andy....any help i can give on the sy27-3 just ask mate :thumb:








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Nik Gnashers
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26 Charlie Tango 573

I have owned myself, as many of my friends, the Sirio SY 27-3 Yagi.

It is a little different to many other manufacturers, in the way the elements connect to the boom, but none in all the years I have been operating have ever needed to be cut.

They are Italian antenna's, and so are tuned for the EU/CEPT frequencies (like all Sirio's), but you can adjust the gamma match to get them resonant slightly up/down the 11m band, which includes the 11m freeband section, and the UKFM 27/81 too.

To be honest, if it is tuned for optimum SWR and Impedance at 27.500, then it will have a low enough SWR from 26.00 to 28.000 to be perfectly safe and usable across all of those frequencies, as mine and many of my friends were, as they do have quite a good bandwidth for a Yagi.

Thank you Dave (OGGY) for the offer of help, it's members like you who really make this place the best group around :thumb:
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Oggy
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You don't need to cut it at all, there is a clue in the name SY27-3 "Sirio Yagi 27 megs-3 elements.".
They are built for 11 meters and whilst can be used for 10 meters all the element spacings are wrong for that.
Whilst a 1.1:1 VSWR is ideal for any antenna why do you think Geoff a 2:1 is so bad......maybe come back to me with just how many % of forward power is lost with that figure (you will be very surprised just how little is lost). :RTFM:
Radio Amateurs with more than one band antennas would be jiggered without a tuner.
The majiority of efficent antennas have a very narrow bandwidth and need a tuner at each end.
For instance my Vortex Quasar 64 has a low VSWR on mid band and UKFM but I use a SEM Z Match for 10 meters on it.
Thanks for the comment Nik I try to help where I can
BTW I'd make the same offer on Transmission 1 ;)
Joking aside CT is certainly a good place for help :thumb:

Edited by Oggy, Friday, 25. September 2015, 19:10.
European Citizens' Band Federation (ECBF) Delegate For The United Kingdom.
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