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Re: Suggestions for Mode L antenna



Greg:

Thanks for your option.  My antenna building abilities havent been the 
best, so I am looking at commercially made antennas.

What type of coax/feedline should I use  ?  I will probably have the run 
  under 50 ft.  I would hope I dont have to use hardline as that will 
probably be very expensive with the price of copper.  As I get close to 
the antenna, should I shift over to a different type of coax/feedline so 
that I can rotate the antenna to track AO-51 ?

Ron
KA4KYI

Greg D. wrote:
> Hi Ron,
> 
> I've done ok on AO-51 with a homemade helix.  See http://home.wavecable.com/~ko6th at the bottom of the page.  I also have watts in the shack, but a full az/el rotor system.  I don't know how sharp the pattern is for the helix, so I don't know how effective a fixed elevation system will be.  But from the reports I've received, the 10 watts and my 60' of hardline with about 7 feet of RG-214 at each end seems to be quite adequate.
> 
> Good luck,
> 
> Greg  KO6TH
> 
> ----------------------------------------
>> Date: Sun, 11 May 2008 20:49:23 -0500
>> From: rnutter@networkref.com
>> To: amsat-bb@amsat.org
>> Subject: [amsat-bb]  Suggestions for Mode L antenna
>>
>> I am considering purchasing the 1.2 ghz module for my IC-910H.  For my 
>> satellite work, I have my antennas angled at about 20 degrees since I 
>> dont have an az/el rotor.  This setup worked reasonably well with Mode S 
>> this weekend.  What are my chances to be able to work Mode L with this 
>> kind of setup ?  Also, I would appreciate any suggestions for an antenna 
>> that I could use.  With only 10 watts, I am not expecting a great signal 
>> but I would hope to have at least a readable signal.  Also, would 
>> appreciate any suggestions as to coax/feedline that I should look at 
>> buying ?
>>
>> Thanks,
>>
>> Ron
>> KA4KYI
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