[sarex] Re: further late reply regarding ISS simplex

[McGrane]

good try but no cigar! I'm writing about 2 meters VHF where there is very
little doppler and higher power. But with all due respect, where is the
UHF radio located and is it left on?

Maybe we should make some coffee HUH?

pat


On Fri, 11 Aug 2006, Kenneth, N5VHO wrote:

> Oh, I forgot that we do have a simplex frequency the
> ISS uses. 437.55. Problem solved.
> 
> Kenneth - N5VHO
> 
> 
> --- McGrane <tmcgrane at suffolk.lib.ny.us> wrote:
> 
> > 
> > Then take it up with the russians and get their
> > opinion.
> > bantor the idea about. As it is, theres very little
> > phone activity, and
> > maybe, just maybe, if we call them, they might pick
> > up the mike.
> > Thanks if you consider the change. 
> > pat
> > 
> > On Fri, 11 Aug 2006, Kenneth, N5VHO wrote:
> > 
> > > Who did you have in mind to "have their way with
> > the
> > > space program"? Doesn't seem to be to many other
> > folks
> > > running ham radio in their manned space programs. 
> > > 
> > > One group is the Russians who have a lot to do
> > with
> > > ham radio being on ISS. It is after all not
> > located in
> > > the USA segement but the Russian Segment of the
> > ISS.
> > > 
> > > Kenneth - N5VHO
> > > 
> > > --- McGrane <tmcgrane at suffolk.lib.ny.us> wrote:
> > > 
> > > > 
> > > > Hi bob- You must live in a bad area. My fellow
> > > > amateurs always quieted
> > > > down when they heard an astronaut calling
> > someone.
> > > > Seems like you and NASA
> > > > are pretty set in your ways. Dont you think its
> > time
> > > > to let some others
> > > > have their way with the space program?
> > > > I remeber an joke I heard years ago; NASA spent
> > a
> > > > million dollars to
> > > > develop a pen that would write in zero
> > gravity......
> > > > the russians used
> > > > pencils.
> > > > I see no open-mindedness here. pat
> > > > 
> > > > 
> > > > On Fri, 11 Aug 2006, Robert Bruninga wrote:
> > > > 
> > > > > > Hello again- the astronauts will hear
> > everyone
> > > > calling 
> > > > > > whether its split or simplex operation so
> > why
> > > > not make it
> > > > > simplex!
> > > > > 
> > > > > Because many of us live near inconsiderate
> > > > operators that step
> > > > > all
> > > > > Over the downlink by transmitting on the
> > uplink. 
> > > > Simplex is
> > > > > just not a good idea.
> > > > > The downlink should be separate from the
> > uplink so
> > > > that everyone
> > > > > can hear the downlink without interfererence
> > from
> > > > uplink
> > > > > stations.
> > > > > 
> > > > > Bob 
> > > > > 
> > > > > > -----Original Message-----
> > > > > > From: sarex-bounces at AMSAT.Org 
> > > > > > [mailto:sarex-bounces at AMSAT.Org] On Behalf
> > Of
> > > > McGrane
> > > > > > Sent: Friday, August 11, 2006 7:43 PM
> > > > > > To: Kenneth G. (JSC-OC)[BAR] Ransom;
> > > > bruninga at usna.edu
> > > > > > Cc: Manned space BBS
> > > > > > Subject: [sarex] Re: further late reply
> > > > regarding ISS simplex
> > > > > > 
> > > > > > 
> > > > > > Hello again- the astronauts will hear
> > everyone
> > > > calling 
> > > > > > whether its split or simplex operation so
> > why
> > > > not make it
> > > > > simplex!
> > > > > > 
> > > > > > pat
> > > > > > 
> > > > > > 
> > > > > > On Fri, 11 Aug 2006, Ransom, Kenneth G.
> > > > (JSC-OC)[BAR] wrote:
> > > > > > 
> > > > > > > It sounds like your issue is not that
> > split
> > > > frequencies are
> > > > > bad but 
> > > > > > > that multiple uplinks makes it difficult
> > for
> > > > the crew to 
> > > > > > listen to one 
> > > > > > > uplink. ITU region regulations for ground
> > > > station 
> > > > > > operations are the 
> > > > > > > culprit. Space has no borders but Earth
> > does
> > > > so have of the 
> > > > > > problem is 
> > > > > > > getting everyone to agree on a single
> > uplink.
> > > > Not everyone
> > > > > in the 
> > > > > > > world has the same frequency allocations
> > nor
> > > > do they use 
> > > > > > the available 
> > > > > > > spectrum in their region the same way.
> > > > > > > 
> > > > > > > The issue is not the 20-30 miles but the
> > > > number of callers 
> > > > > > in the 2000 
> > > > > > > km wide footprint. The station has to
> > listen
> > > > to all of 
> > > > > > them. Since you 
> > > > > > > can't hear all of them, it becomes
> > difficult
> > > > to know when 
> > > > > > someone is 
> > > > > > > talking or not without guidance from the
> > > > station operator.
> > > > > > > 
> > > > > > > In the MIR days, the crew did not have the
> > > > luxury of near
> > > > > full time 
> > > > > > > satellite communication that provides
> > voice,
> > > > email 
> > > > > > communication and 
> > > > > > > an IP phone that lets them make phone
> > calls.
> > > > If the MIR 
> > > > > > crew wanted to 
> > > > > > > talk to someone, they needed to use the
> > ham
> > > > radio or the 
> > > > > > Russian VHF 
> > > > > > > space to ground system. The ISS crew has
> > > > plenty of options 
> > > > > > to choose 
> > > > > > > from when they want to communicate and it
> > > > depends on the 
> > > > > > personality 
> > > > > > > of the crew as to which ones get utilized.
> > > > > > > 
> > > > > > > Kenneth - N5VHO
> > > > > > > 
> > > > > > > -----Original Message-----
> > > > > > > From: sarex-bounces at AMSAT.Org
> > > > > [mailto:sarex-bounces at AMSAT.Org] On 
> > > > > > > Behalf Of McGrane
> > > > > > > Sent: Thursday, August 10, 2006 6:43 PM
> > > > > > > To: Manned space BBS
> > > > > > > Subject: [sarex] further late reply
> > regarding
> > > > ISS simplex
> > > > > > > 
> > > > > > > 
> > > > > > > Greetings from patrick N2OEQ
> > > > > > > 
> > > > > > > Despite support of the present frequency
> > > > scheme for the ISS
> > > > > I still 
> > > > > > > wish to disagree with the policy of split
> > > > operation with
> > > > > different 
> > > > > > > phone uplinks.
> > > > > > > 
> > > > > > > Back when the MIR was up, the russians
> > > > operated simplex and 
> > > > > > left the 
> > > > > > > radio on to listen for callers.
> > > > > > > On several occasions, I called the MIR
> > > > according to my
> > > > > tracking 
> > > > > > > program and was rewarded several times
> > with a
> > > > response.
> > > > > > > 
> > > > > > > With two different uplink frequencies, the
> > > > astronauts are
> > 
> === message truncated ===
> 
> 
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