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Reviews Categories | Antennas: VHF/UHF+ Omnidirectional: verticals, mobile, etc | SIRIO CX 4 68 70MHz Vertical Help

Reviews Summary for SIRIO CX 4 68 70MHz Vertical
Reviews: 2 Average rating: 1.0/5 MSRP: $Around 70
Description: This antenna is a 3/4 wave, coaxial, vertical J-pole style antenna for the 4M band.
Product is in production.
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GM4FVM Rating: 2/5 May 5, 2019 15:37 Send this review to a friend
Great while it lasted  Time owned: more than 12 months
This was the best performing 4m vertical I ever had. However, after about a year it died and I found that water had got in, filled it up, passed through the plug and down the coax, ruining the coax too.
It wasn't as if I had not tried. I have three other Sirio antennas and I have carefully protected them against water getting in. I did the same with this one. I carefully bound all the joints up with self amalgamating tape. When I took it down I threw it in the garage but after a long time there I find that my tape is still water tight. The antenna has failed at the bottom of the single element section. There is a small joiner there which has split both vertically and then radially. It looks like water got in, froze, it split, and then it was curtains.
I do not agree that it is hopeless like the other reviewer. If you could keep the water out of it you would have a great antenna - and Sirio sell them for commercial use so there must be some way of doing it.
Maybe surround the whole thing in blue shrinkwrap?
I gave away my Sandpiper 5/8th when I got this and I had to buy another Sandpiper when it got water logged. Still, I have now scrapped the Sirio and it is good for holding up the bird netting in the garden.
G4IPZ Rating: 0/5 Feb 7, 2014 14:32 Send this review to a friend
Rubbish!  Time owned: more than 12 months
Looks good but performs badly in the rain.
Seems to leak like a sieve and fills up with water and/or condensation.
In the dry it will happily perform at 1.2:1 but wait until the weather changes then you can sit and watch the SWR rise.
Mine regularly topped in excess of 5:1 because it had got around half a glass of water in it.
I've stripped it down and rebuilt it twice now, adding masses of waterproofing, sealant and tape and STILL the damn thing gets full of water.
Avoid unless its all you can get your hands on.

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