On 07/27/2014 09:57 AM, Jim Sanford wrote:
> Tracking doppler on 2m and 70cm was hard enough at field day. I like
> 2GHz and up, but do not want to even think about the doppler.
At least not with analog modes.
High speed digital is very well suited to microwave in LEO as the link
budgets general
On 07/27/2014 12:57 PM, Jim Sanford wrote:
The other thing that is exciting about going digital, is the idea of
CAT-5 (or fiber) to the box at the antenna, not coax.
Yep. Rig at the mast-head, fiber (RF noise-immune) to the shack, and a
control head at the operators position. Or a software-o
Tracking doppler on 2m and 70cm was hard enough at field day. I like
2GHz and up, but do not want to even think about the doppler.
In the KITSAT days, I used an IC-751 as the receive IF. It has a true
FM detector, with discriminator centered at 0-volts. It steps in 1 or
10 Hz increments, ev
On Sat, Jul 26, 2014 at 10:24:15PM -0700, Phil Karn wrote:
> On 07/22/2014 07:49 AM, wa4...@comcast.net wrote:
>
> > SSB/CW birds are the only way to go and if you build it they will
> > come .
>
> Think about what it would be like to tune for Doppler while working SSB
> through a LEO satellite
On 07/22/2014 07:49 AM, wa4...@comcast.net wrote:
> SSB/CW birds are the only way to go and if you build it they will
> come .
Think about what it would be like to tune for Doppler while working SSB
through a LEO satellite on microwave.
Before you say "computer control", work out the effect of
> Now, as far as the bad behavior on SO-50. At least 75% of that is due
> to people who can't hear the thing, but the Fox satellites are going
> to be 13 dB stronger than SO-50 (9 dB advantage due to the 2m
> downlink, about 4 dB due to the 750 mW power output compared to SO-50s
> 250 mW), so hopef
Damon,
They can certainly be frustrating when you have all these lids calling
CQ and keying up who obviously cannot hear the satellite, but there is
a ton of popular demand for FM satellites. I had a lot of people ask
me what FM satellites were working at Dayton and at the hamfest I did
a demo at
I hope someone can launch a 100 of them, single channel ,pileup ,total chaos
,someone keying down on the entire pass what more would you want.
All we need to bust a crazy pile up is a 300 watt mfj amp right? Lets all work
to the good of the satellite part of the hobby. SSB/CW birds are the only w
Just so everyone knows, I find all of this utter ridiculous; and while
I disagree with all of the folks who say "this is just a hobby" (since
many of us are also commercial operators and heavily involved in
ARES/RACES, etc. as certified emergency radio operators), I do believe
that some civility is
I gave up a long time ago trying to make a contact on FM . I heard My downlink
several times , and maybe got one reply . Can't get a word in edgeways with
the regular bunch on there on every pass . Not worth the effort to Me .
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Thanks guys got the information I needed.
Now to get on.
73
Nels W0TUP DN98if
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Hi All
Been away awhile, I'm wondering what FM satellites
are being used now.
Thanks,
Nels W0TUP
North Dakota DN98if
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