| Author |
Message |
    
Kirk
| | Posted on Sunday, November 16, 2003 - 11:20 pm: | 
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Looking at, but not sold on, Maco M103's stacked. Need some experiences on wind-survivability at 80 feet. Windload is no issue for the tower. Has anyone had a good experience with the co-phasing? Many thanks---Kirk |
Ca346
| | Posted on Monday, November 17, 2003 - 4:37 pm: |
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Kirk:
I was talking to someone in the mid-West a month or so ago who had done that to his home antenna's. I believe he used a co-phasing harness sold for the truckers? His signal was good and strong, but even he admitted that when you do that, you are basically splitting your signal strength between the two antenna's. He said he thought he would be needing to increase his power output to make it worthwhile.
I think your better off spending the money on height. The higher we get the antenna. The better the signal... |
Highlander
| | Posted on Monday, November 17, 2003 - 6:49 pm: |
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Id just go with a straight 5 or 6 element instead. I'll bet you spend more money and time on the stacked threes than you would on a single 6 element, and the gain would be close enough on a 5 element to not make much of a difference.
That being said, there was a guy locally that had stacked threes sidse by side and it did work beautifuly.
David
n9rzf |
Bruce
| | Posted on Monday, November 17, 2003 - 9:53 pm: |
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Highlander i agree now at say 440 mhz where you can stack many long boom antennas i would go for stacking .... and increaing capture aera but at 11 meters NAAAA a 5 elm beam should be more than enough |
Bullet
| | Posted on Tuesday, November 18, 2003 - 12:53 pm: |
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kirk,
if your main consideration is gain, go with what bruce and highlander are telling you!
stacked 3's are going to be "around" 10-11dbd gain and thats obtainable from a single 5 or 6 element yagi.
plus not having to make a co-phasing harness,and stacking boom and all the tunning and headaches that come with it.
the rejection of unwanted signals on the stacked 3's might be hard to beat though.
if the goal is a small powerfull beam that takes up little room try homebrewing a 11meter dopple quad w/reflector. should produce "around"10dbd gain and is smaller than stacked PDLII's. and is not a true nightmare to install. abit more advanced to make though. |
Bruce
| | Posted on Tuesday, November 18, 2003 - 1:33 pm: |
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Bullet, Highlander now if you realy want some gain check this guys antenna
http://web.wt.net/~w5un/mba2003.jpg
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Bigbob
| | Posted on Tuesday, November 18, 2003 - 6:19 pm: |
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Bruce,do you suppose he can get out with that rig,or do you think he ought to add a couple more.Bigbob |
Bullet
| | Posted on Tuesday, November 18, 2003 - 8:36 pm: |
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this is what i need for my station, yee hahhh!
id be the man on ch 28 hehe |
Bruce
| | Posted on Tuesday, November 18, 2003 - 9:54 pm: |
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Yep Bullet THATS a Nice antenna i heard him off the moon into tampabay
The antenna is 48 16 elm antennas REAL GAIN +30 DBD ( 32.5 DBI )
Now if you run 1000 watts to this antenna it is the same as 1,000,000 watts to a groundplane
Not to shabby..... |
Kirk
| | Posted on Wednesday, November 19, 2003 - 6:46 pm: |
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Actually Bullet, you hit it on the head. I've never tried a stack on 11 meter and would like to experiment. I have used a 26B2 [2 stacked 13's] Cushcraft...and man...what a beam. I'm moving in the spring and putting up a 72 ft crank with service platform, so I have the ability to do some servicing on the antenna(s). Thanks fellas for your input. I do appreciate everyones comments.--Kirk |
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