[sarex] Re: Future ISS amateur radio modes

Robert Bruninga bruninga at usna.edu
Tue May 1 18:01:50 PDT 2007

Another option would be for packets on ISS to be on 145.825
always.  That has historically been the channel for AX.25


We hope to establish that as a permanent fixture in space with
all satellllites that are capable of digipeating being on that
same frequency so that access becomes transparent to the users.

Bob, Wb4APR 

> -----Original Message-----
> From: sarex-bounces at AMSAT.Org 
> [mailto:sarex-bounces at AMSAT.Org] On Behalf Of Darrell
> Sent: Tuesday, May 01, 2007 7:58 PM
> To: sarex at AMSAT.Org
> Subject: [sarex] Re: Future ISS amateur radio modes
> Could the two channels used for casual crew to ham contacts 
> (144.49/145.80 & 
> 145.20/145.80) be programmed to send a subaudible tone?
> The subaudible tone would only be on the downlink from the 
> ISS and not 
> required for uplink stations. Let me be very clear on this, I 
> am not asking 
> for the subaudible tone squelch to be turned on at the ISS,
just a 
> subaudible tone encoded into the transmission from the ISS on 
> 145.80 and 
> only on the two channels used for crew to ham communications.
> The subaudible tone would not be sent on the packet repeater
> (145.99/145.80) or other channels that use 145.800 as the
> This would allow those of us who would like to monitor 145.80 
> for contacts 
> with the crew to set our own receiver subaudible tone 
> squelch. We then 
> would only hear signals from the ISS when a crew member was
> contacts. The squelch would not open for packet, etc.
> For those who want to hear everything, nothing would change.
> Darrell
> On April 29, 2007 04:40 pm, Patrick McGrane wrote:
> > Greetings
> >
> > I read rogers mail pushing for packet on ISS. I have a 
> different opinion
> > to express. For years, the ISS transmitted a very 
> unchallenging Packet
> > mode devoid of real communications with the crew. After 
> listening for
> > many passes for years waiting to hear a crewmember call CQ 
> the packet
> > noise began to grow on me like chinese water torture. To 
> me, without the
> > capability to communicate with the crew, the aprs packet
mode is
> > frivolous robotic stuff. Sorry, But I'm not the military 
> type. I realize
> > the crew is busy, or otherwise uninterested, but I prefer 
> to communicate
> > with the crew or others directly. I'm thankful for the 
> times the d700 was
> > placed in cross-band repeat mode. It was the next best 
> thing to talking
> > to the crew. Please use it in the future.
> >
> > Thank you, 73, patrick N2OEQ
> -- 
> Darrell Bellerive
> Amateur Radio Stations VA7TO and VE7CLA
> Grand Forks, British Columbia, Canada
> ----
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