Copper Talk » Open Forum » Archived Messages » 2002 » Archived Messages 12/01/2001 to 01/31/2002 » CoPhased A99. Does this work? « Previous Next »

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Magnum410
Posted on Friday, January 11, 2002 - 6:59 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)
I have seen A kit to cophase two Antron 99s together, Does this work? I am running an Imax2000 now will cophasing two A99s together give me better recieve/transmit?
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bruce
Posted on Friday, January 11, 2002 - 8:28 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)
the answer is yes hygain put out a flyer on how to make a beam out of 2 vert antennas somewhere i have it
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Forummaster
Posted on Friday, January 11, 2002 - 10:22 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)
Magnum410,

Copper sells a cophase kit for the A99, check it out at -->

http://www.copperelectronics.com/cgi-bin/checkitout/checkitout.cgi?catalogSTORE:CKIE:prodA65-00074+
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Scrapiron63
Posted on Saturday, January 12, 2002 - 9:47 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)
I don't know how this co-phase design works, if it makes a directional antenna, or more like co-phase antennas on a truck. I know some guys that came up with a design that makes the co-phaseing like a two element beam. That makes it necessary for a rotor, and a better mounting structure like a tower. Since your gonna have to invest in a rotor and tower, why not go with a real beam, especially since the cost of two A99s, plus the co-phasing kit would cost more than a M103 beam, which I think works much better. scrapiron
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jyd
Posted on Saturday, January 12, 2002 - 10:21 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)
DIRECTIONAL,like A beam
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bruce
Posted on Saturday, January 12, 2002 - 10:58 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)
scrap who it works SIMPLY is you feed the antennas with coax now you add or remove a lengh of coax from one antenna and depending on how you do it you have ENDFIRE or BROADSIDE signals. you can play all kinds of tricks with that the result a crude but efective 2 el beam. Hams on 80, 40 and 20 meters have done this for years your AM broadsact stations use this method too. The cost well it isnt cheep and you got to do it right but how many people can turn a 80 meter beam? As for towers in my county putting up a tower you have to have a engeneer sign off on it ant it has to withstand 130 mile per hour winds which no tower i know of is rated at. Most dont get the permit and few get caught me i play it safe with a MFJ vert and dypoles