[sarex] Re: further late reply regarding ISS simplex

[Kenneth, N5VHO]

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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