[amsat-bb] Re: Need advice : Eggbeater antenna, preamp, coax

Sebastian w4as at bellsouth.net
Sun Jun 28 19:12:06 PDT 2009

On Jun 28, 2009, at 4:16 PM, Jean-François Ménard wrote:

> Hi,
> I would like to know if there is much difference using a preamp for
> satellite receiving using a M2 Eggbeater antenna ?

I'll add a thought here that I haven't seen anyone reply about.  As  
everyone mentioned, definitely go with a preamp - but think for the  
future.  How much transmitter output power do you have?  If you have  
relatively low power, say 5 watts, you can get an inexpensive preamp.   
However, if you plan to use higher power in the future, perhaps for  
meteor scatter; that low power preamp may no longer be useful.

> And also, is there much difference between a heliax 0.5"  and a RG-8  
> on
> a 50 feet cable run between the antenna and the radio ?

Again, you've received several responses, but one thing hasn't been  
mentioned.  What is your output power?  If you have an HT with a  
couple of watts, that RG-8 may 'eat up' a lot of your power,  
especially if you are going to transmit on 440 Mhz.  Without knowing  
how much power you have, and which birds you plan to use, it's  
difficult to give you a good answer.

> I would really like to optimize my receiving quality but I also want  
> to
> know where to put all my effort first.

"you can't work 'em if you can't hear them"; also don't forget that  
you need to hear yourself FIRST.  Work on hearing your downlink if  
possible before you start to call other stations.  If you can't hear  
yourself, then post about it so we can help you out.  I think it would  
be helpful if you told us which type(s) of rig(s) you will be using.

> I'm new and I cannot invest much money the first year.

When you find a fellow ham who has all the money that's necessary to  
build a perfect station, please let me know!

> Thank to all for your advice.
> 73
> ---
> Jean-François Ménard

73 de W4AS

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