| Author |
Message |
    
Dale
Senior Member
Username: Dale
Post Number: 1678
Registered: 12-2002
| | Posted on Friday, February 25, 2011 - 5:43 pm: | 
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do anyone know of anyone using this antenna?
theres alot of videos on youtube about it.
dale/a.k.a.hotrod
cef426
cvc#64
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Mayor513
Intermediate Member
Username: Mayor513
Post Number: 195
Registered: 3-2002
| | Posted on Thursday, March 10, 2011 - 12:44 pm: |
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--Yeah, I wish a few people would hurry up and buy one, lol. I've seen the videos as well on You Tube and like what I see. It's expensive (in my opinion), but it somehow covers from at least 25.5-30 Mhz with 2.0 or less SWR. There have been many times I wish I had one antenna that would work for both CB and 10 meter frequencies, and this looks like it would fit the bill. Two antennas in one. At first I was disappointed it didn't handle a ton of power, but when on 10 meters, I never use more than 100 watts on FM, anyway.
--Somehow this antenna doesn't have radials like the Maco V58 I had, but that is fine with me as I will be moving late this year or early next year and I will have neighbors close by and they won't have to look at the "unsightly" radials, lol. |
Dale
Senior Member
Username: Dale
Post Number: 1681
Registered: 12-2002
| | Posted on Thursday, March 10, 2011 - 6:17 pm: |
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if its as good as i hear sounds like
should be like a imax2k. but i dunno for sure.
unlike the imax ive heard the sirio doesnt
create rfi in the shack. ive actually seen
videos on u tube comparing the two antennas
must be the rf choke on the sirio.also like
the imax ,the sirio doesnt have the radials
dale/a.k.a.hotrod
cef426
cvc#64
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Tech833
Moderator
Username: Tech833
Post Number: 1932
Registered: 8-2002
| | Posted on Thursday, March 17, 2011 - 10:50 am: |
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I seriously doubt the gainmaster is going to beat an Imax2000 with GPK by as much as some claim. I'll reserve complete judgment until I am able to put a gainmaster on the test range. That may happen.
Your radio 'Mythbuster' since 1998
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Dale
Senior Member
Username: Dale
Post Number: 1685
Registered: 12-2002
| | Posted on Saturday, March 19, 2011 - 10:49 am: |
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well if/when this happens I'll be waiting patiently for your results
dale/a.k.a.hotrod
cef426
cvc#64
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Casey
New member
Username: Casey
Post Number: 4
Registered: 11-2010
| | Posted on Monday, April 04, 2011 - 5:37 am: |
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You guys will like this!
I have used these 4 antennas in the last year:
Hy-gain Penetrator 500
A1-Antennas Interceptor I-10K
Imax-2000
Sirio Gain Master
I-10K - Sold it.
Imax - use it for camnping & lending to friends who need to borrow until they afford a new antenna if theirs got broke.
Penetrator-500 - Keeping it as a back-up.
Sirio Gain Master - Using it and it's the only omni that's ever beat the Hy-gain Penetrator-500 (which beat the I-10k until I lengthened it to .64 & retuned the Tuba, uhm, Clarinet, oops, I mean TROMBONE match) and I run a 667 into it, no problem.
Tunes flat swr (>1.4:1) from 25.800 - 29.650 without a tuner.
F'n AWESOME antenna.
Will absolutely outperform the I-10k & Mr.Coily at wattage levels below ~800w pep, over that stay away!!
It's a bit finicky and requires it's own 'space'.
Either use insulators in the guy wires or non-metallic guy lines so it is nowhere near another antenna, tree, roof, wires, etc.
The Sirio Gain Master is a balanced antenna so anything in it's 'near-field' can upset the pattern for the worse.
When I first tried it, it was 1/2 wavelength from the Penetrator but the same height. It sucked. The mast / coax I had it on was previously used for my Imax, and the Imax was S-8.4 at 10 miles, the Penetrator was S-8.9 to Paul, 10 miles away. I put the Gain Master up where the Imax had been and it was S-7, all on the analog meter on Paul's Icom Pro3.
Took the Penetrator down and out of the area and the Sirio Gain Master came up to S-9.5!(They weren't in-line to the receiving station, but side-by-side)
Moved the Sirio Gain Master to the Penetrator mast and it dropped to S-9.1 to Paul @ 10 miles.
About 1 needle width better than the P-500 at 10 miles, but it keeps getting stronger the further out you talk.
At 80 miles the Sirio GM was S-4 where the P-500 was S-2.5 on a Kenwood TS-440 meter. Same mast, radio, coax.
In a nutshell, @ 10 miles:
A99 = S-7
Maco V5/8 = S-8
Imax, I-10K = S-9
Penetrator-500, I-10K .64 = S-9+3db
Sirio Gain Master = S-9+5db
This was seen on a 1973 vintage E.F. Johnson Messenger 223 meter that could pass for 6 months old it's so pristine and still has all original Johnson Tubes!
- And I'm now hearing Europe right through East-Coast DX, where I never before heard them unless I switched to the Quad and pointed over the North Pole from here in Northern Calif.
Best $180 you could spend on your <800w pep station.
---
Pic of an E.F.J. Messenger 223: http://www.shadowstorm.com/cb/rigs/Johnson-Messenger-223-2.jpg
...why is it saying "New User"? - I signed up like 7 years ago!?! |
Dale
Senior Member
Username: Dale
Post Number: 1694
Registered: 12-2002
| | Posted on Monday, April 04, 2011 - 6:24 pm: |
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thanks for report.ive tested some of the
same antennas with same results. how high is your gain master
dale/a.k.a.hotrod
cef426
cvc#64
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Casey
New member
Username: Casey
Post Number: 7
Registered: 11-2010
| | Posted on Monday, April 04, 2011 - 7:52 pm: |
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They were all tested at the same height, 40' to the base.
Nothing's built like the $339 I-10K though, except maybe the Mr.Coily at FIVE HUNDRED DOLLARS!
Can't say the $169 Gain Master won't hold up to over 100mph, but I plan to add another smaller fiberglass section to the top, making 5 total and shortening each one below it by sliding more of each section inside the one below it so it has a stronger, faster taper for less wind loading and even greater strength.
It already shows only about 1/2 the flex of the Imax in the wind.
The Gain Master makes 50mph wind appear to be only 30mph. - I dig it!
It also looks real sharp and has/needs no radials to increase the neighbor 'notice factor'!
I recommend wrapping black electrical tape over the red coax coil to keep it fresh looking underneath otherwise it will noticeably fade to a washed-out pink within 4-5 months.
I've also had a LW-150 but the Penetrator out-talked it so I sold it. |
Wi_544
New member
Username: Wi_544
Post Number: 1
Registered: 12-2012
| | Posted on Wednesday, January 02, 2013 - 1:42 pm: |
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got my gainmaster up, only at about 20',, within a 1/2 hour i had a contact in hawaii, then the next day i got ireland and italy, so many signals i never even heard with the 1/4 wave base antenna. also the gainmaster has way less static. great antenna |
Dale
Senior Member
Username: Dale
Post Number: 1914
Registered: 12-2002
| | Posted on Thursday, January 03, 2013 - 2:42 pm: |
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ive heard alot of good things about this one
hows it locally wi 544
dale/a.k.a.hotrod
cef426
cvc#64
454 [dx numbers]
38lsb
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Wi_544
New member
Username: Wi_544
Post Number: 2
Registered: 12-2012
| | Posted on Monday, January 07, 2013 - 1:19 pm: |
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local is great also, one guy i talk to about 40 miles away i could just hardly make him out before and now he comes in loud and strong and he can also here me much better now. also heard and made contact with some other guys that are 40+ miles away that i never heard before with the other antenna |
Dale
Senior Member
Username: Dale
Post Number: 1920
Registered: 12-2002
| | Posted on Tuesday, January 08, 2013 - 12:29 pm: |
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just curious what was your other antenna?
dale/a.k.a.hotrod
cef426
cvc#64
454 [dx numbers]
38lsb
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Wi_544
New member
Username: Wi_544
Post Number: 3
Registered: 12-2012
| | Posted on Wednesday, January 09, 2013 - 11:02 am: |
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1/4 wave ground plane and 1/2 wave vertical dipole |
