[amsat-bb] Re: Suggestions for Mode L antenna
rnutter at networkref.com
Mon May 12 05:50:44 PDT 2008
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 ?
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 at networkref.com
>> To: amsat-bb at 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 ?
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