Stumbled across this today and I can honestly say I've never seen one of these before. Pretty pricey, but an interesting antenna.
http://www.claw.deltaloop.it/en/
73,
Brett
http://www.claw.deltaloop.it/en/
73,
Brett
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Multi band delta loop beam
- Thread starter 2RT307
- Start date
some of the data number don't add up...........how does a 15.4 foot boom have a 4.2 turning radius?
13.3 dBi on both 15 and 20?
perhaps I am missing something
looks well made, but,..... I'm not even gonna try to figure out the price in US$
13.3 dBi on both 15 and 20?
perhaps I am missing something
looks well made, but,..... I'm not even gonna try to figure out the price in US$
Last edited:
RatsoW8
Supporting Member, W9WDX ARC Member - WD8T
They used feet for the boom length and meters for the turn radius. Silly Italianos. Next the'y be trying to sell us amplifiers.
turning radius would be 2.1m. half boom length!. And the gain figures look a bit strange to.More gain on 15m and 20m than 10m ,even though its 3el on 10 and 2 on 15 and 20.
Close but you have to take into account how wide it is as well. Half the boom length would apply if it did not have any elements. One of my antennas, a Cushcraft A3WS for 12/17m, has a boom length of 14 feet but a turning radius of 14.4 feet due to the element length. The other has a 14 foot boom as well but a turning radius of 21 feet. Good old Pythagoras had that one covered with his theorem.
Spiderbeam is fine, but I wouldn't use it as permanent antenna.
After having dozens of different HF antennas I strongly suggest to use full size beams mono or multi band. No traps, lossless matching, always resonant where it should be.
To buy: http://ant-depot.com/index.php rock solid performance and build quality.
To buy or build by yourself: http://sp3gem.smoczyk.pl/index.php?option=com_content&task=view&id=77&Itemid=63 and http://sp3gem.smoczyk.pl/index.php?option=com_content&task=view&id=78&Itemid=62
For those two antennas all dimensions are given and it can be built at home.
KLM KT34XA but that is really pricey one - dunno why, because in Poland it was sold second hand for 300-400$
A friend of mine have KLM, but as we tested multiple times GB312 outperforms KLM at the same height. I heard and worked DX a little over backround noise, he heard only background hiss.
Mike
After having dozens of different HF antennas I strongly suggest to use full size beams mono or multi band. No traps, lossless matching, always resonant where it should be.
To buy: http://ant-depot.com/index.php rock solid performance and build quality.
To buy or build by yourself: http://sp3gem.smoczyk.pl/index.php?option=com_content&task=view&id=77&Itemid=63 and http://sp3gem.smoczyk.pl/index.php?option=com_content&task=view&id=78&Itemid=62
For those two antennas all dimensions are given and it can be built at home.
KLM KT34XA but that is really pricey one - dunno why, because in Poland it was sold second hand for 300-400$
A friend of mine have KLM, but as we tested multiple times GB312 outperforms KLM at the same height. I heard and worked DX a little over backround noise, he heard only background hiss.
Mike
RatsoW8
Supporting Member, W9WDX ARC Member - WD8T
I didn't catch that...4.2m is just the total boom length in feet converted to meters.
My mistake. BRAIN FART.!!! forgot about element length as CK said.4.2m is most likely 1/2 the length of the top wire on the 20m reflector Hence turn radius.
Dont get me wrong I love deltas But a 3 band interlaced delta is one big ass antenna, and it's top heavy with some serious wind loading