[amsat-bb] New M2 LEO Antenna System

Jim Jerzycke kq6ea at verizon.net
Mon Mar 9 01:35:21 UTC 2015

Not to steal the thread, Patrick, but I've digipeated through the ISS 
numerous times using my TH-D7, and now my TH-D72, with a Diamond SRH77CA.

Haven't done it in a while because it got "boring", but it can be easily 
done here on the Left Coast if you pick the pass so some of it is over 
the Pacific.

It's also the only way I work (when I do) the FM satellites, as with 
half the footprint over the ocean, the uplink contention isn't as 

73, Jim  KQ6EA

On 03/08/2015 10:56 PM, Patrick STODDARD (WD9EWK/VA7EWK) wrote:
> Clint,
> How presumptuous of you to think I am "missing the point". If you
> operated more often, you'd hear what many of us regularly experience
> from those that have issues hearing SO-50's weak (250mW) downlink.
> Many of those that have difficulties hearing SO-50 are already using
> Arrows, Elks, or various homebrew equivalents. I know this from my
> e-mail exchanges with many of these satellite operators, ready to
> help them improve their operating situations. Other regular operators
> also do the same thing, and all of us aren't looking for the public
> praise and adulation in helping others. By the way, I thought your name
> was "Clint", not "Allen".
> Allen N5AFV is a long-time satellite operator with lots of experience
> working satellites in many different locations with different combinations
> of radios and antennas over the years. What Allen - and many of us
> who have been on for a while - can do doesn't automatically translate
> to something that works for everyone. My question about the number
> of SO-50 QSOs logged with the HT/whip combination is not a slam
> against Allen, but a simple question to get some context for that
> number.
> As for the ISS, it may be easy to *hear* the ISS downlinks with a whip,
> but I wonder how many are actually *working* it - using the packet
> digipeater, or trying to talk to a crewmember - with a telescoping whip
> or long duckie. Again, context.  We may be able to work the Fox-1
> satellites with those other antennas, given their 2m downlinks that
> should be much easier to hear than what we have currently with SO-50.
> Time will tell. If the AFC on the Fox-1 uplink receiver works as
> advertised, coupled with the strong 2m downlinks, those satellites
> should be very nice for the FM crowds. And I will probably try some
> of those passes with the telescoping whips or long duckies, so I have
> first-hand knowledge to share with others about how well they work
> (or don't work) with the Fox-1 satellites.
> Patrick WD9EWK/VA7EWK
> http://www.wd9ewk.net/
> On Sun, Mar 8, 2015 at 9:44 PM, Clint Bradford <clintbradford at mac.com> wrote:
>> You are missing the point - ESPECIALLY with the ISS and the upcoming AMSAT-NA
>> FOX-1A project with its 2M downlink, providing up to 400mW TX power, and approximately
>> 6db stronger receive signal than having a 440 downlink.
>> SO ... if one's more "simple" antenna is doing well now with SO-50 and the ISS, just
>> imagine how exciting an educational project FOX-1A is going to be!
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