900 mhz Tranny ant.  
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All Forums >> Radios, Batteries, Clubhouse and more >> Aerial Photography and Video >> 900 mhz Tranny ant.
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900 mhz Tranny ant. - 4/22/2008 5:33:45 PM   
copterviews



Posts: 69
Joined: 1/3/2004
From: Myrtle Beach, SC, USA
Status: offline 		Hey guys,
I just switched over to 2.4 on my models (flying) and also switched From 2.4 to 900mhz on my down-link, Range video stuff (500), working good with stock ant. but very limited range about 300 feet, I purchased the flat 6 db gain patch ant. and it made the situation much better, but is there a better transmitter ant. available for my down-link as well?



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Thanks,
Brett Horton
       Post #: 1

RE: 900 mhz Tranny ant. - 4/22/2008 6:15:42 PM   
moogly



Posts: 132
Joined: 9/15/2006
From: minnetonka, MN, USA
Status: offline 		Wow you should be getting alot more than 300 feet I use a 2.4GHZ (I just can't use my spectrum raiod with it) and a 8dbi patch the TX is only 200mw and I have a least 1000 feet or more. you can't do much on the TX side are you in a bad aera alot of interfeance? trees cars poles? sound like somthing not right was you 2.4Ghz working good ? if so what power and what antenna?
What patch anntena did you buy are you sure it @ 900MHz?

(in reply to copterviews)
       Post #: 2

RE: 900 mhz Tranny ant. - 4/22/2008 6:52:33 PM   
copterviews



Posts: 69
Joined: 1/3/2004
From: Myrtle Beach, SC, USA
Status: offline 		not using 2.4 any longer (it worked great by the way)
900 mhz currently.



_____________________________

Thanks,
Brett Horton

(in reply to moogly)
       Post #: 3

RE: 900 mhz Tranny ant. - 4/22/2008 8:00:54 PM   
moogly



Posts: 132
Joined: 9/15/2006
From: minnetonka, MN, USA
Status: offline 		I meant are you sure you patch anntena is tuned to (set for) 900MHz and not 2.4GHz?
because a 2.4Ghz Patch will still pick up 900 just not much?

(in reply to copterviews)
       Post #: 4

RE: 900 mhz Tranny ant. - 4/23/2008 12:46:10 AM   
copterviews



Posts: 69
Joined: 1/3/2004
From: Myrtle Beach, SC, USA
Status: offline 		.........


_____________________________

Thanks,
Brett Horton

(in reply to moogly)
       Post #: 5

RE: 900 mhz Tranny ant. - 4/29/2008 6:03:14 AM   
lvspark



Posts: 348
Joined: 4/19/2002
From: WALLA WALLA, WA,
Status: offline 		For your TX
http://www.hyperlinktech.com/productfamily.aspx?id=88

(in reply to copterviews)
       Post #: 6

RE: 900 mhz Tranny ant. - 4/29/2008 6:04:35 PM   
copterviews



Posts: 69
Joined: 1/3/2004
From: Myrtle Beach, SC, USA
Status: offline 		Thanks,
I have read....... some people say that these ant. do not do anything even degrade the signal?
Do you have personal experience with this ant. I did order my patch ant. from them and it seemed to help alot, but I like to optimize my system.
Thanks for the reply.



_____________________________

Thanks,
Brett Horton

(in reply to lvspark)
       Post #: 7

RE: 900 mhz Tranny ant. - 4/29/2008 6:13:37 PM   
lvspark



Posts: 348
Joined: 4/19/2002
From: WALLA WALLA, WA,
Status: offline 		I have not used these antenna specifically, but have used lots of duckies in the past on many different freq. The highter the dB on those omni's the better. I don't believe they would be worse at all. Depends upon the mfg and center freq the antenna is at from the factory. Many times I have had to cut or extend the element length to tune it to my exact freq for best performance. Fine tuning can make 1000's of feet of difference... (probably even on your stock antenna)??

(in reply to copterviews)
       Post #: 8

RE: 900 mhz Tranny ant. - 4/29/2008 6:17:26 PM   
copterviews



Posts: 69
Joined: 1/3/2004
From: Myrtle Beach, SC, USA
Status: offline 		Do not have a meter
But I do thank you for the info.
It is worth a shot, only $20



_____________________________

Thanks,
Brett Horton

(in reply to lvspark)
       Post #: 9

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