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Re: P3D information



And for some reason you think this is a ham radio problem???

Dan Schultz wrote:
> 
> Well once again I stirred up some controversy. Let's go over today's
> feedback:
> 
> >Yes, I lived in an apartment once too. But you know, I worked my ass
> off, saved money and bought a home WHERE I MADE SURE I COULD PUT UP
> ANTENNAS. Anyone who doesn't think they can do the same thing is fooling
> themselves. I've worked hard and worked my butt off to be able to have
> what I have today and for anyone to call me an elitist because of what I
> have insults me.
> 
> No insult was intended. I was only answering back at the people who
> proclaim Zero Tolerance for "technology bigots".
> 
> I could probably buy a house also, if I didn't think I might be moving
> to another job in a year or two. I am happy  that you were able to
> choose a house in a neighborhood where you can put up antennas. Some
> hams don't have that luxury no matter how hard they work their ass off.
> Once the XYL falls in love with some house that's close to a good school
> and a good shopping mall and the kids soccer field, no amount of arguing
> about ham radio is going to change her mind. I can just imagine how the
> conversation goes: "But sweetheart, we can't buy this house, they don't
> allow antennas here...." Nope. Your ass is toast in that scenario. For
> most of us ham radio is only a hobby and our choices about where we live
> are driven by more serious considerations. Do you really believe that
> only homeowners should operate satellites? Why shouldn't a lowly college
> student be able to operate from his dorm room, if we can make it
> possible for him to do so?
> 
> >So let's drop this whine of "I can't operate this mode because... " bit
> and figure out a way to do it if it really is important.
> 
> I did figure out a way, and I'm not whining. Just working on my S band
> helix for my camera tripod.
> 
> >Second, C band TVRO dishes are not at all rusting away
> 
> Look on Ebay, C band TVRO dishes can be had almost for free if you are
> willing to haul them away. I know you and other techies still use them,
> and when I do buy a house I'm going to get one too so that I can watch
> NASA TV without interruption and without having to pay for it. But the
> rest of the non-techie world has gone to DSS.
> 
> >That same $1500 needs to be spent on the FT-847 for mode B must be
> spent for your digital microwave modes too.
> 
> Where do we get the idea that the only way we can get on the air is by
> buying a $1500 radio from Japan? Yes I know that many hams don't like to
> solder kits together for one reason or another, but in a few years you
> won't have to.
> 
> >Perhaps. But there are a lot about the microwave bands that we do not
> know  yet since we've never had a bird with greater than an S band
> downlink. What will doppler shift or antenna pointing be like on 10 GHz?
> Will we have rain scatter problems, etc, etc. All cool and fun stuff to
> find out, but these bands are a question as to their "ease." There is
> also the cost. Not only do you have to buy the "IF rig" but all the
> transverters as well. Microwaves are much more costly.
> 
> Today they are, because they have not been accepted by the mainstream of
> users. There is no inherent reason why they need to be. After P3D is
> successfully in orbit, once the market is there, there will be
> inexpensive microwave gear on the market and you won't need an RF lab to
> get it up and running.
> 
> Yes, the microwave and digital modes on P3D will be experimental for a
> few years after launch while the techies work out the unknowns. But a
> few years from now MFJ and TenTec and other similar companies will have
> microwave and/or digital satellite appliances that you can use right out
> of the box, for no more than the cost of a good GPS receiver or a DSS TV
> receiver. Look at the little QRP rigs that are available for the HF
> bands, or the KK7B radios in QST over the past decade. They will cover
> any band including the microwaves. For wideband digital modes, you could
> buy the IF module from Symek, add a local oscillator for the band of
> your choice, and there you go. No need to pay $300 to modify your FT-847
> for wideband.
> 
> If you find a good deal on Mode B equipment at a hamfest, go ahead and
> buy it. It will be around for the lifetime of Phase 3D, 10 years or
> more. The debate will happen when we build the next satellite, smaller
> and cheaper than P3D and no room for multiple bands and antennas. Will
> we build another Mode B satellite, or will we decide to leave Mode B
> behind?
> 
> >   Anyone who has worked >100 countries via satellite on VHF, UHF and
> Microwave bands knows that <10% of DX operations were active on
> microwave satellite bands during the 90's...
> 
> This only reflects the fact that <10% of all satellite operators in any
> country were active on microwave bands in the 90's. It might not be much
> different next year.
> But the year after that?
> 
> It is silly to argue about these things. Time will tell which is best.
> 
> Dan Schultz N8FGV
> 
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