Re: [amsat-bb] FM birds

2014-07-29 Thread Phil Karn
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

Re: [amsat-bb] FM birds

2014-07-27 Thread Gus
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

Re: [amsat-bb] FM birds

2014-07-27 Thread Jim Sanford
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

Re: [amsat-bb] FM birds

2014-07-27 Thread Diane Bruce
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

Re: [amsat-bb] FM birds

2014-07-26 Thread Phil Karn
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

Re: [amsat-bb] FM birds

2014-07-22 Thread M5AKA
> 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

Re: [amsat-bb] FM birds

2014-07-22 Thread Paul Stoetzer
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

[amsat-bb] FM birds

2014-07-22 Thread wa4hfn
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

[amsat-bb] Fm Birds

2011-03-31 Thread Giacobbe Lauser
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

[amsat-bb] FM birds

2011-02-02 Thread jerry
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 . ___ Sent via AMSAT-BB@ams

[amsat-bb] FM Birds

2010-09-15 Thread Arlon Nelson
Thanks guys got the information I needed. Now to get on. 73 Nels W0TUP DN98if ___ Sent via amsat...@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings:

[amsat-bb] FM Birds

2010-09-15 Thread Arlon Nelson
Hi All Been away awhile, I'm wondering what FM satellites are being used now. Thanks, Nels W0TUP North Dakota DN98if ___ Sent via amsat...@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur