[amsat-bb] Re: AO-7 question

Ron Overdrive ronoverdrive at tehfurry.com
Thu Jun 10 11:43:58 PDT 2010

As far as I can tell looking at AMSAT's website and the AO-7 Log & Resource
site I'm not seeing anything mentioning EIRP. Everything says to keep your
power low like 5 watts or less. I'm not sure what kind of antenna gain
they're assuming when they say that. I pretty much always operate low power
as it is and the only indicator they give is if you hear FM noise while in
SSB, unfortunately being a new ham I do not know what that sounds like.

On Thu, Jun 10, 2010 at 2:31 PM, Samudra Haque <samudra.haque at gmail.com>wrote:

> Hi does the spec specify the output power as EIRP or not?
> If EIRP the antenna gain needs to be part of the equation and
> therefore you need to reduce your transmission power to avoid desense
> at the receiver on orbit. If the spec does not specify then there
> should be a receiver senstivity figure already published which would
> be useful in a link budget equation.
> Sent on the road... If urgent call (202) 812-3325
> On Jun 10, 2010, at 12:46 PM, Ron Overdrive
> <ronoverdrive at tehfurry.com> wrote:
> > One thing I always noticed is that its recommended to not exceed 5
> > watts
> > when operating on AO-7, but I'm not seeing anything about maximum
> > gain to
> > use. I have an Arrow II handheld yagi and on the 440 side supposedly
> > it has
> > a 10dbd gain which would give me effectively 50 watts output
> > assuming no
> > losses. So my question in a nutshell is, what is the maximum
> > recommended
> > radiated power recommended with this bird?
> >
> > ~73, KC2WQW Ron
> > _______________________________________________
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> > author.
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