| Author |
Message |
    
Milkman21218
Intermediate Member
Username: Milkman21218
Post Number: 463
Registered: 1-2004
| | Posted on Wednesday, June 22, 2011 - 6:06 am: | 
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I need help finding a higher DB Gain (Would like it to be 10-13DB) antenna for a 2 meter repeater. Something like a Station Master. Is there anything that Tech 833, or anyone can recommend?
Izzy
CEF#502
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Funtimebob
Intermediate Member
Username: Funtimebob
Post Number: 283
Registered: 5-2002
| | Posted on Wednesday, June 22, 2011 - 7:15 am: |
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Diamond 510
workman UV300/Tram 1481
There is a guy on e-bay that sells the Tram/Workman for under $100. called CQantenna
73 De Bubba
Honorary O.F.
D.O.M. Club (Junior Auxiliary)
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Sitm
Intermediate Member
Username: Sitm
Post Number: 444
Registered: 1-2004
| | Posted on Wednesday, June 22, 2011 - 9:17 am: |
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The Diamond X510HDM was designed for strength and performance and is pre-tuned to achieve maximum gain in both the 2m and 70cm amateur bands. (2m: 3 x 5/8 and 70cm: 8 x 5/8). It has a 3 section fiberglass radome with overlapping outer shells for added strength. It comes with stainless steel mounting hardware and radials and strong-waterproof joint couplings. It can also handle high power operation with a capacity of 330 watts 144-148 and 250 watts 440-450 MHz.
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X510HDM Specifications
Frequency: 2M/70CM (146-148 and 440-450 MHz)
Gain: 8.3/11.7 dB
Power: 230/250 watts
Connector: UHF (M-type)
Height: 17.2 feet
Weight: 5 Lbs.
Wind Rating: 90 MPH
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The Diamond X510HDN is the same antenna as the X510HDM but features an N connector rather than a UHF (M-type) connector. |
Milkman21218
Intermediate Member
Username: Milkman21218
Post Number: 464
Registered: 1-2004
| | Posted on Monday, July 04, 2011 - 10:56 pm: |
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Thanks guys! But I'm looking for a commercial 2m antenna to be installed on a 2m repeater. And I was thinking that Tech833 could recommend one with plenty of real DB gain.
Izzy
CEF#502
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Tech237
Moderator
Username: Tech237
Post Number: 1454
Registered: 4-2004
| | Posted on Tuesday, July 05, 2011 - 12:15 pm: |
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Last repeater I setup I made my own hi-gain antenna - 6 bay co-linear using aluminium rod and then set inside a pvc pipe as the repeater was located on a mountain that had a high ice coverage 6 months of the year ( read no access to site). 6 years later, the antenna and site are still running well.
Tech237
N7AUS
God only made some many perfect head, on the rest he put hair.
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Funtimebob
Intermediate Member
Username: Funtimebob
Post Number: 286
Registered: 5-2002
| | Posted on Tuesday, July 05, 2011 - 2:57 pm: |
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The Diamond 510 and a few of it's "clones" are about as high in gain that you are going to find on the commercial market for a vertical antenna.
I would be more concerned in checking out the build quality on Eham.
If you want anything with more gain you would probably have to either build it yourself or contact a manufacturer to see if they are willing to build a special order (probably not).
Yahoo groups has a repeater builder group that might be a good source for information but I am pretty sure that it will likely all lead back to the Diamond.
73
If Life Gives you Melons you may be Dyslexic
73 De Bubba Honorary O.F.
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Starface
Senior Member
Username: Starface
Post Number: 3036
Registered: 1-2005
| | Posted on Tuesday, July 05, 2011 - 6:13 pm: |
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http://lakelandarc.org/downloads/stationmaster.pdf |
Tech833
Moderator
Username: Tech833
Post Number: 2001
Registered: 8-2002
| | Posted on Tuesday, July 05, 2011 - 9:36 pm: |
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One of the best pieces I have seen written about repeater antennas was on GMRSweb magazine. Do a web search for: "GMRS repeater antennas" +popularwireless.com It's the first result that comes up on Google.
You won't get 10-13 dB gain on VHF. UHF yes, VHF, no. Any repeater antenna that advertises that kind of gain on VHF was obviously measured by the same outfit that says an Antron 99 has 9.9 dB gain on 11m.
In order to get 10 to 13 dB gain on VHF, the antenna would be over 30 feet tall.
Your radio 'Mythbuster' since 1998
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Milkman21218
Intermediate Member
Username: Milkman21218
Post Number: 465
Registered: 1-2004
| | Posted on Tuesday, July 12, 2011 - 11:59 am: |
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Thanks Tech833 and everyone else.
Izzy
CEF#502
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