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CX2SA > SATDIG 03.11.16 00:01l 912 Lines 32822 Bytes #999 (0) @ WW
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From: CX2SA@CX2SA.SAL.URY.SOAM
To : SATDIG@WW
Today's Topics:
1. Re: ISS Digipeater is back! On UHF this time (437.550MHz)! (Scott)
2. Re: ISS Digipeater is back! On UHF this time (437.550MHz)!
(Robert Bruninga)
3. Re: ISS Digipeater is back! On UHF this time (437.550MHz)!
(Zach Metzinger)
4. ISS Digipeater is back! On UHF this time (437.550MHz)! (KO6TZ Bob)
5. HFsat 21/29 MHz + UBAKUSAT 145/435 Linear Transponder (M5AKA)
6. Re: ISS Digipeater is back! On UHF this time (437.550MHz)!
(mvivona@xxxxx.xxxx
7. Re: ISS Digipeater is back! On UHF this time (437.550MHz)! (Bob)
8. Outernet Cube Sats (Mike Hoblinski)
9. Re: ISS Digipeater is back! On UHF this time (437.550MHz)!
(Dave Taylor)
10. Re: ISS Digipeater is back! On UHF this time (437.550MHz)!
(mvivona@xxxxx.xxxx
11. Re: Outernet Cube Sats (M5AKA)
----------------------------------------------------------------------
Message: 1
Date: Wed, 2 Nov 2016 11:36:23 -0400
From: "Scott" <scott23192@xxxxx.xxx>
To: "AMSAT BB" <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] ISS Digipeater is back! On UHF this time
(437.550MHz)!
Message-ID: <19485DE817A1495B86F12E81C92DF117@xxxxxxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
Appreciate that reminder, Bob.
I'm not so lazy that turning the dial is the end of the world, but for the
sake of argument does anyone know of a dual-band (or just UHF) FM radio that
is capable of doppler tuning via DDE (or similar) interfaces from tracking
software like Orbitron.
Thanks!
-Scott, K4KDR
------------------------------------------------------------------------------
--
-----Original Message-----
From: Robert Bruninga
Sent: Wednesday, November 02, 2016 11:06 AM
To: AMSAT BB
Subject: Re: [amsat-bb] ISS Digipeater is back! On UHF this time
(437.550MHz)!
Great! But... Everyone must remember, UHF packet is *not* appliance
operating.
You must oppositely tune for Doppler on the uplink starting low, and going
high, while tuning the downlink High and going low. Best to pre-program 5
channels and switch during the event. If you do not do this, you are
simplky QRM to everyone else, blocking their successes with your failures.
Bob
-----Original Message-----
From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of John Brier
Sent: Wednesday, November 02, 2016 10:52 AM
To: AMSAT BB
Subject: [amsat-bb] ISS Digipeater is back! On UHF this time (437.550
MHz)!
I didn't see this on amsat-bb yet.
I plan on trying the upcoming 16:45 UTC pass.
https://twitter.com/RF2Space/status/793559573240115200
"#ARISS ISS packet system now operational on UHF (437.550 MHz). #hamradio"
http://issfanclub.com/node/41954#comment-18163
"Due to the failure of the VHF radio in the Columbus module the packet
system on 145.825 is not possible. The crew just swapped the radio for the
UHF equivalent and packet is now operational on 437.550 MHz.
The Kenwood D700 radios were augmented a couple years ago by a Kenwood
D710E radio that was dedicated to SSTV operations. The Russian team soon
afterwards adopted the D710E as their only operational radio but it was
never configured for packet operations.
The ARISS team is working on flying replacement D710GA models to replace
and unify all the hardware. Target for delivery is late 2017.
Submitted by N5VHO on Tue, 2016-11-01 17:14."
73, John Brier KG4AKV
------------------------------
Message: 2
Date: Wed, 2 Nov 2016 12:00:31 -0400
From: Robert Bruninga <bruninga@xxxx.xxx>
To: AMSAT BB <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] ISS Digipeater is back! On UHF this time
(437.550MHz)!
Message-ID: <61e9a289509d43aa4fdcc1f599965d0c@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
> I'm not so lazy that turning the dial is the end of the world,
I may be reading too much into that statement, but just to be clear...
it is not that simple... On most FM rigs you cannot turn the knob both
ways at once, to the left for TX and to the right for RX . You have to
tune the TX and RX in opposite directions at the same time every 2 minutes
or so. Hence, the suggestion to pre-tune the -/+10, -/+5 , 0, +/-5, and
+/-10 kHz offsets in 5 memories to make it trivial to make the 5 steps
during the pass.
-----Original Message-----
From: Robert Bruninga
Sent: Wednesday, November 02, 2016 11:06 AM
To: AMSAT BB
Subject: Re: [amsat-bb] ISS Digipeater is back! On UHF this time
(437.550MHz)!
Great! But... Everyone must remember, UHF packet is *not* appliance
operating.
You must oppositely tune for Doppler on the uplink starting low, and going
high, while tuning the downlink High and going low. Best to pre-program 5
channels and switch during the event. If you do not do this, you are
simplky QRM to everyone else, blocking their successes with your failures.
Bob
-----Original Message-----
From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of John Brier
Sent: Wednesday, November 02, 2016 10:52 AM
To: AMSAT BB
Subject: [amsat-bb] ISS Digipeater is back! On UHF this time (437.550
MHz)!
I didn't see this on amsat-bb yet.
I plan on trying the upcoming 16:45 UTC pass.
https://twitter.com/RF2Space/status/793559573240115200
"#ARISS ISS packet system now operational on UHF (437.550 MHz). #hamradio"
http://issfanclub.com/node/41954#comment-18163
"Due to the failure of the VHF radio in the Columbus module the packet
system on 145.825 is not possible. The crew just swapped the radio for the
UHF equivalent and packet is now operational on 437.550 MHz.
The Kenwood D700 radios were augmented a couple years ago by a Kenwood
D710E radio that was dedicated to SSTV operations. The Russian team soon
afterwards adopted the D710E as their only operational radio but it was
never configured for packet operations.
The ARISS team is working on flying replacement D710GA models to replace
and unify all the hardware. Target for delivery is late 2017.
Submitted by N5VHO on Tue, 2016-11-01 17:14."
73, John Brier KG4AKV
_______________________________________________
Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available to
all interested persons worldwide without requiring membership. Opinions
expressed are solely those of the author, and do not reflect the official
views of AMSAT-NA.
Not an AMSAT-NA member? Join now to support the amateur satellite program!
Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 3
Date: Wed, 2 Nov 2016 11:06:34 -0500
From: Zach Metzinger <zmetzing@xxxxx.xxx>
To: AMSAT BB <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] ISS Digipeater is back! On UHF this time
(437.550MHz)!
Message-ID: <23be5077-f9be-127e-ec69-d8e2d73ff1e7@xxxxx.xxx>
Content-Type: text/plain; charset=windows-1252
On 11/02/16 11:00, Robert Bruninga wrote:
>> I'm not so lazy that turning the dial is the end of the world,
>
> I may be reading too much into that statement, but just to be clear...
>
> it is not that simple... On most FM rigs you cannot turn the knob both
> ways at once, to the left for TX and to the right for RX . You have to
> tune the TX and RX in opposite directions at the same time every 2 minutes
> or so. Hence, the suggestion to pre-tune the -/+10, -/+5 , 0, +/-5, and
> +/-10 kHz offsets in 5 memories to make it trivial to make the 5 steps
> during the pass.
However, on multi-mode rigs which have computer control, that can be
done via the PC (updating both RX and TX freqs).
--- Zach
------------------------------
Message: 4
Date: Wed, 2 Nov 2016 11:39:42 -0700
From: KO6TZ Bob <my.callsign@xxxxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] ISS Digipeater is back! On UHF this time
(437.550MHz)!
Message-ID: <357799f6-2cf2-1661-3c36-aee24f4f6c18@xxxxxxx.xxx>
Content-Type: text/plain; charset=utf-8; format=flowed
ISS APRS Digi is back up and working just fine on 437.550.
Using my IC-910h, SatPC32_ISS, UZ7HO, and UISS, everything worked like
it is supposed to.
The last pass was short, but made 1.5 contacts.
BOB
KO6TZ
=====================
1:Fm KO6TZ To APRS Via RS0ISS,ARISS <UI pid=F0 Len=27 >[11:17:54]
=3356.77N\11630.82WA DM13rw
1:Fm KC7MG-9 To APRS Via RS0ISS* <UI pid=F0 Len=44 >[11:18:11]
=3253.45N/11142.30W-Hello from AZ. DM42 grid
1:Fm KO6TZ To APRS Via RS0ISS,ARISS <UI pid=F0 Len=38 >[11:18:22]
:KC7MG-9 :BOB Desert Hot Spg CA DM13
1:Fm KC7MG-9 To APRS Via RS0ISS* <UI pid=F0 Len=23 >[11:19:05]
KO6TZ ACK DE KC7MG DM42
1:Fm KO6TZ To APRS Via RS0ISS,ARISS <UI pid=F0 Len=27 >[11:19:13]
:BLN0QSLs :KE0KHA-7,KC7MG-9
------------------------------
Message: 5
Date: Wed, 2 Nov 2016 19:52:35 +0000 (UTC)
From: M5AKA <m5aka@xxxxx.xx.xx>
To: AMSAT BB <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] HFsat 21/29 MHz + UBAKUSAT 145/435 Linear
Transponder
Message-ID: <311658105.1365767.1478116355777@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
HFsat will have 21 to 29 MHz transponder
https://amsat-uk.org/2016/11/02/hfsat-will-have-21-to-29-mhz-transponder/
Turkey's UBAKUSAT linear transponder satellite to deploy 2017
https://amsat-uk.org/2016/11/02/ubakusat-linear-transponder-satellite/
Ham radio in National Geographic film Before Mars
https://amsat-uk.org/2016/10/26/ham-radio-in-national-geographic-film-before-m
ars/
Raspberry Pi could generate ISS HamTV video
https://amsat-uk.org/2016/10/24/raspberry-pi-iss-hamtv/
IARU issue Amateur-Satellite Service spectrum requirements
https://amsat-uk.org/2016/10/24/iaru-amateur-satellite-spectrum/
Join AMSAT-UK
https://amsat-uk.org/2016/09/27/autumn-fall-oscar-news/
73 Trevor M5AKA
----
AMSAT-UK?http://amsat-uk.org/
Twitter?https://twitter.com/AmsatUK
Facebook https://facebook.com/AmsatUK
YouTube?https://youtube.com/AmsatUK
----
------------------------------
Message: 6
Date: Wed, 2 Nov 2016 21:06:50 +0000 (UTC)
From: "mvivona@xxxxx.xxxx <mvivona@xxxxx.xxx>
To: Robert Bruninga <bruninga@xxxx.xxx>, AMSAT BB <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] ISS Digipeater is back! On UHF this time
(437.550MHz)!
Message-ID: <816927597.641425.1478120810880@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
Robert,
I'm not following your explanation, please help me understand.
If the ISS is transmitting and receiving on 437.55, why would you split your
TX and RX offset directions?Seems to me like you would TX and RX high on the
approach and TX and RX low as it passes by. Both on the same frequency just
like you would do on SO-50.
Michael KC4ZVA
From: Robert Bruninga <bruninga@xxxx.xxx>
To: AMSAT BB <amsat-bb@xxxxx.xxx>
Sent: Wednesday, November 2, 2016 12:00 PM
Subject: Re: [amsat-bb] ISS Digipeater is back! On UHF this time
(437.550MHz)!
> I'm not so lazy that turning the dial is the end of the world,
I may be reading too much into that statement, but just to be clear...
it is not that simple...? On most FM rigs you cannot turn the knob both
ways at once, to the left for TX and to the right for RX .? You have to
tune the TX and RX in opposite directions at the same time every 2 minutes
or so.? Hence, the suggestion to pre-tune the -/+10, -/+5 , 0, +/-5, and
+/-10? kHz offsets in 5 memories to make it trivial to make the 5 steps
during the pass.
-----Original Message-----
From: Robert Bruninga
Sent: Wednesday, November 02, 2016 11:06 AM
To: AMSAT BB
Subject: Re: [amsat-bb] ISS Digipeater is back! On UHF this time
(437.550MHz)!
Great!? ? But... Everyone must remember, UHF packet is *not* appliance
operating.
You must oppositely tune for Doppler on the uplink starting low, and going
high, while tuning the downlink High and going low.? Best to pre-program 5
channels and switch during the event.? If you do not do this, you are
simplky QRM to everyone else, blocking their successes with your failures.
Bob
-----Original Message-----
From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of John Brier
Sent: Wednesday, November 02, 2016 10:52 AM
To: AMSAT BB
Subject: [amsat-bb] ISS Digipeater is back! On UHF this time (437.550
MHz)!
I didn't see this on amsat-bb yet.
I plan on trying the upcoming 16:45 UTC pass.
https://twitter.com/RF2Space/status/793559573240115200
"#ARISS ISS packet system now operational on UHF (437.550 MHz). #hamradio"
http://issfanclub.com/node/41954#comment-18163
"Due to the failure of the VHF radio in the Columbus module the packet
system on 145.825 is not possible. The crew just swapped the radio for the
UHF equivalent and packet is now operational on 437.550 MHz.
The Kenwood D700 radios were augmented a couple years ago by a Kenwood
D710E radio that was dedicated to SSTV operations. The Russian team soon
afterwards adopted the D710E as their only operational radio but it was
never configured for packet operations.
The ARISS team is working on flying replacement D710GA models to replace
and unify all the hardware. Target for delivery is late 2017.
Submitted by N5VHO on Tue, 2016-11-01 17:14."
73, John Brier KG4AKV
_______________________________________________
Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available to
all interested persons worldwide without requiring membership. Opinions
expressed are solely those of the author, and do not reflect the official
views of AMSAT-NA.
Not an AMSAT-NA member? Join now to support the amateur satellite program!
Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
_______________________________________________
Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
to all interested persons worldwide without requiring membership. Opinions
expressed
are solely those of the author, and do not reflect the official views of
AMSAT-NA.
Not an AMSAT-NA member? Join now to support the amateur satellite program!
Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 7
Date: Wed, 2 Nov 2016 17:28:39 -0400
From: Bob <WB4SON@xxxxx.xxx>
To: "mvivona@xxxxx.xxxx <mvivona@xxxxx.xxx>
Cc: AMSAT BB <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] ISS Digipeater is back! On UHF this time
(437.550MHz)!
Message-ID:
<CAPonRZ94meKcUFR61FFAE_+ZuTGHGnei09sCBHMxX70Ok3oTJg@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
As the ISS is approaching, the Doppler Effect causes the frequency you need
to listen to, to appear to be higher. So you tune your RX to a higher
frequency.
Likewise as ISS approaches you, the Doppler Effect causes you transmit
frequency to be higher. But the ISS isn't adjusting for that, so you need
to transmit on a LOWER frequency in order to be heard by the ISS.
The adjustments are always in the opposite direction.
73, Bob, WB4SON
On Wed, Nov 2, 2016 at 5:06 PM, mvivona--- via AMSAT-BB <amsat-bb@xxxxx.xxx>
wrote:
> Robert,
> I'm not following your explanation, please help me understand.
>
> If the ISS is transmitting and receiving on 437.55, why would you split
> your TX and RX offset directions?Seems to me like you would TX and RX high
> on the approach and TX and RX low as it passes by. Both on the same
> frequency just like you would do on SO-50.
>
> Michael KC4ZVA
>
> From: Robert Bruninga <bruninga@xxxx.xxx>
> To: AMSAT BB <amsat-bb@xxxxx.xxx>
> Sent: Wednesday, November 2, 2016 12:00 PM
> Subject: Re: [amsat-bb] ISS Digipeater is back! On UHF this time
> (437.550MHz)!
>
> > I'm not so lazy that turning the dial is the end of the world,
>
> I may be reading too much into that statement, but just to be clear...
>
> it is not that simple... On most FM rigs you cannot turn the knob both
> ways at once, to the left for TX and to the right for RX . You have to
> tune the TX and RX in opposite directions at the same time every 2 minutes
> or so. Hence, the suggestion to pre-tune the -/+10, -/+5 , 0, +/-5, and
> +/-10 kHz offsets in 5 memories to make it trivial to make the 5 steps
> during the pass.
>
> -----Original Message-----
>
> From: Robert Bruninga
> Sent: Wednesday, November 02, 2016 11:06 AM
> To: AMSAT BB
> Subject: Re: [amsat-bb] ISS Digipeater is back! On UHF this time
> (437.550MHz)!
>
> Great! But... Everyone must remember, UHF packet is *not* appliance
> operating.
>
> You must oppositely tune for Doppler on the uplink starting low, and going
> high, while tuning the downlink High and going low. Best to pre-program 5
> channels and switch during the event. If you do not do this, you are
> simplky QRM to everyone else, blocking their successes with your failures.
>
> Bob
>
> -----Original Message-----
> From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of John Brier
> Sent: Wednesday, November 02, 2016 10:52 AM
> To: AMSAT BB
> Subject: [amsat-bb] ISS Digipeater is back! On UHF this time (437.550
> MHz)!
>
> I didn't see this on amsat-bb yet.
>
> I plan on trying the upcoming 16:45 UTC pass.
>
> https://twitter.com/RF2Space/status/793559573240115200
>
> "#ARISS ISS packet system now operational on UHF (437.550 MHz). #hamradio"
>
> http://issfanclub.com/node/41954#comment-18163
>
> "Due to the failure of the VHF radio in the Columbus module the packet
> system on 145.825 is not possible. The crew just swapped the radio for the
> UHF equivalent and packet is now operational on 437.550 MHz.
>
> The Kenwood D700 radios were augmented a couple years ago by a Kenwood
> D710E radio that was dedicated to SSTV operations. The Russian team soon
> afterwards adopted the D710E as their only operational radio but it was
> never configured for packet operations.
>
> The ARISS team is working on flying replacement D710GA models to replace
> and unify all the hardware. Target for delivery is late 2017.
>
> Submitted by N5VHO on Tue, 2016-11-01 17:14."
>
> 73, John Brier KG4AKV
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available to
> all interested persons worldwide without requiring membership. Opinions
> expressed are solely those of the author, and do not reflect the official
> views of AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership. Opinions
> expressed
> are solely those of the author, and do not reflect the official views of
> AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>
>
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership. Opinions
> expressed
> are solely those of the author, and do not reflect the official views of
> AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>
------------------------------
Message: 8
Date: Wed, 2 Nov 2016 14:31:46 -0700
From: Mike Hoblinski <hobergenix@xxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Outernet Cube Sats
Message-ID:
<CAMpzqDFAZTvwoeR17QupDYsBrDPpbsPWzi-Qkh+gV9V86RTCTA@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
I believe they are planning 3 cube sats from what I ran across
on their forum.
UHF downlink, VHF uplink 420 ? 450 MHz Transmit frequency covering the
amateur bands 130 ? 150 MHz Receive frequency covering the amateur bands
Transmit output power adjustable from 27 to 33 dBm o Adjustable in 3 dBm
steps 9600 baud GMSK, and 1200 baud AFSK data rates Implements AX.25
protocol encoding/decoding DTMF backdoor l Low-power Flash-based FPGA
Beacon (CW) mode Simple digital interfaces
Here is a link to their project
https://www.clyde.space/our-missions/10-outernet
Mike Hoblinski
N6IMF
------------------------------
Message: 9
Date: Wed, 02 Nov 2016 17:43:32 -0400
From: Dave Taylor <dave.w8aas@xxxxxxx.xxx>
To: "mvivona@xxxxx.xxxx <mvivona@xxxxx.xxx>
Cc: AMSAT BB <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] ISS Digipeater is back! On UHF this time
(437.550MHz)!
Message-ID: <9CD58BF4-BE81-412F-AE76-55AEB56777FC@xxxxxxx.xxx>
Content-Type: text/plain; charset=us-ascii
Michael, the opposite offsets are because all Doppler correction must be
done on the ground. For example, when range is decreasing, the Doppler
raises apparent frequency in both directions, up and down. That means you
will hear 437.55 from ISS at a higher frequency. But, you must transmit at
a lower frequency, so that ISS will hear you at 437.55 after the Doppler
raises the frequency.
Dave, W8AAS
> On Nov 2, 2016, at 5:06 PM, mvivona--- via AMSAT-BB <amsat-bb@xxxxx.xxx>
wrote:
>
> Robert,
> I'm not following your explanation, please help me understand.
>
> If the ISS is transmitting and receiving on 437.55, why would you split
your TX and RX offset directions?Seems to me like you would TX and RX high
on the approach and TX and RX low as it passes by. Both on the same
frequency just like you would do on SO-50.
>
> Michael KC4ZVA
>
> From: Robert Bruninga <bruninga@xxxx.xxx>
> To: AMSAT BB <amsat-bb@xxxxx.xxx>
> Sent: Wednesday, November 2, 2016 12:00 PM
> Subject: Re: [amsat-bb] ISS Digipeater is back! On UHF this time
(437.550MHz)!
>
>> I'm not so lazy that turning the dial is the end of the world,
>
> I may be reading too much into that statement, but just to be clear...
>
> it is not that simple... On most FM rigs you cannot turn the knob both
> ways at once, to the left for TX and to the right for RX . You have to
> tune the TX and RX in opposite directions at the same time every 2 minutes
> or so. Hence, the suggestion to pre-tune the -/+10, -/+5 , 0, +/-5, and
> +/-10 kHz offsets in 5 memories to make it trivial to make the 5 steps
> during the pass.
>
> -----Original Message-----
>
> From: Robert Bruninga
> Sent: Wednesday, November 02, 2016 11:06 AM
> To: AMSAT BB
> Subject: Re: [amsat-bb] ISS Digipeater is back! On UHF this time
> (437.550MHz)!
>
> Great! But... Everyone must remember, UHF packet is *not* appliance
> operating.
>
> You must oppositely tune for Doppler on the uplink starting low, and going
> high, while tuning the downlink High and going low. Best to pre-program 5
> channels and switch during the event. If you do not do this, you are
> simplky QRM to everyone else, blocking their successes with your failures.
>
> Bob
>
> -----Original Message-----
> From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of John Brier
> Sent: Wednesday, November 02, 2016 10:52 AM
> To: AMSAT BB
> Subject: [amsat-bb] ISS Digipeater is back! On UHF this time (437.550
> MHz)!
>
> I didn't see this on amsat-bb yet.
>
> I plan on trying the upcoming 16:45 UTC pass.
>
> https://twitter.com/RF2Space/status/793559573240115200
>
> "#ARISS ISS packet system now operational on UHF (437.550 MHz). #hamradio"
>
> http://issfanclub.com/node/41954#comment-18163
>
> "Due to the failure of the VHF radio in the Columbus module the packet
> system on 145.825 is not possible. The crew just swapped the radio for the
> UHF equivalent and packet is now operational on 437.550 MHz.
>
> The Kenwood D700 radios were augmented a couple years ago by a Kenwood
> D710E radio that was dedicated to SSTV operations. The Russian team soon
> afterwards adopted the D710E as their only operational radio but it was
> never configured for packet operations.
>
> The ARISS team is working on flying replacement D710GA models to replace
> and unify all the hardware. Target for delivery is late 2017.
>
> Submitted by N5VHO on Tue, 2016-11-01 17:14."
>
> 73, John Brier KG4AKV
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available to
> all interested persons worldwide without requiring membership. Opinions
> expressed are solely those of the author, and do not reflect the official
> views of AMSAT-NA.
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------------------------------
Message: 10
Date: Wed, 2 Nov 2016 21:46:01 +0000 (UTC)
From: "mvivona@xxxxx.xxxx <mvivona@xxxxx.xxx>
To: Bob <WB4SON@xxxxx.xxx>
Cc: AMSAT BB <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] ISS Digipeater is back! On UHF this time
(437.550MHz)!
Message-ID: <523002179.674964.1478123161686@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
OK, now it makes sense. I had to draw some pictures to get it straight in my
head. Thanks for explaining.
I was attempting to compare it with SO-50, but since you TX on VHF it's not
an issue.
Cheers,?Michael KC4ZVA
From: Bob <WB4SON@xxxxx.xxx>
To: "mvivona@xxxxx.xxxx <mvivona@xxxxx.xxx>
Cc: Robert Bruninga <bruninga@xxxx.xxx>; AMSAT BB <amsat-bb@xxxxx.xxx>
Sent: Wednesday, November 2, 2016 5:28 PM
Subject: Re: [amsat-bb] ISS Digipeater is back! On UHF this time
(437.550MHz)!
As the ISS is approaching, the Doppler Effect causes the frequency you need
to listen to, to appear to be higher.? So you tune your RX to a higher
frequency.
Likewise as ISS approaches you, the Doppler Effect causes you transmit
frequency to be higher.? But the ISS isn't adjusting for that, so you need
to transmit on a LOWER frequency in order to be heard by the ISS.
The adjustments are always in the opposite direction.
73, Bob, WB4SON
On Wed, Nov 2, 2016 at 5:06 PM, mvivona--- via AMSAT-BB <amsat-bb@xxxxx.xxx>
wrote:
Robert,
I'm not following your explanation, please help me understand.
If the ISS is transmitting and receiving on 437.55, why would you split your
TX and RX offset directions?Seems to me like you would TX and RX high on the
approach and TX and RX low as it passes by. Both on the same frequency just
like you would do on SO-50.
?Michael KC4ZVA
? ? ? From: Robert Bruninga <bruninga@xxxx.xxx>
?To: AMSAT BB <amsat-bb@xxxxx.xxx>
?Sent: Wednesday, November 2, 2016 12:00 PM
?Subject: Re: [amsat-bb] ISS Digipeater is back! On UHF this time
(437.550MHz)!
> I'm not so lazy that turning the dial is the end of the world,
I may be reading too much into that statement, but just to be clear...
it is not that simple...? On most FM rigs you cannot turn the knob both
ways at once, to the left for TX and to the right for RX .? You have to
tune the TX and RX in opposite directions at the same time every 2 minutes
or so.? Hence, the suggestion to pre-tune the -/+10, -/+5 , 0, +/-5, and
+/-10? kHz offsets in 5 memories to make it trivial to make the 5 steps
during the pass.
-----Original Message-----
From: Robert Bruninga
Sent: Wednesday, November 02, 2016 11:06 AM
To: AMSAT BB
Subject: Re: [amsat-bb] ISS Digipeater is back! On UHF this time
(437.550MHz)!
Great!? ? But... Everyone must remember, UHF packet is *not* appliance
operating.
You must oppositely tune for Doppler on the uplink starting low, and going
high, while tuning the downlink High and going low.? Best to pre-program 5
channels and switch during the event.? If you do not do this, you are
simplky QRM to everyone else, blocking their successes with your failures.
Bob
-----Original Message-----
From: AMSAT-BB [mailto:amsat-bb-bounces@ amsat.org] On Behalf Of John Brier
Sent: Wednesday, November 02, 2016 10:52 AM
To: AMSAT BB
Subject: [amsat-bb] ISS Digipeater is back! On UHF this time (437.550
MHz)!
I didn't see this on amsat-bb yet.
I plan on trying the upcoming 16:45 UTC pass.
https://twitter.com/RF2Space/ status/793559573240115200
"#ARISS ISS packet system now operational on UHF (437.550 MHz). #hamradio"
http://issfanclub.com/node/ 41954#comment-18163
"Due to the failure of the VHF radio in the Columbus module the packet
system on 145.825 is not possible. The crew just swapped the radio for the
UHF equivalent and packet is now operational on 437.550 MHz.
The Kenwood D700 radios were augmented a couple years ago by a Kenwood
D710E radio that was dedicated to SSTV operations. The Russian team soon
afterwards adopted the D710E as their only operational radio but it was
never configured for packet operations.
The ARISS team is working on flying replacement D710GA models to replace
and unify all the hardware. Target for delivery is late 2017.
Submitted by N5VHO on Tue, 2016-11-01 17:14."
73, John Brier KG4AKV
______________________________ _________________
Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available to
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Subscription settings: http://www.amsat.org/mailman/ listinfo/amsat-bb
______________________________ _________________
Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
to all interested persons worldwide without requiring membership. Opinions
expressed
are solely those of the author, and do not reflect the official views of
AMSAT-NA.
Not an AMSAT-NA member? Join now to support the amateur satellite program!
Subscription settings: http://www.amsat.org/mailman/ listinfo/amsat-bb
______________________________ _________________
Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
to all interested persons worldwide without requiring membership. Opinions
expressed
are solely those of the author, and do not reflect the official views of
AMSAT-NA.
Not an AMSAT-NA member? Join now to support the amateur satellite program!
Subscription settings: http://www.amsat.org/mailman/ listinfo/amsat-bb
------------------------------
Message: 11
Date: Wed, 2 Nov 2016 21:48:15 +0000 (UTC)
From: M5AKA <m5aka@xxxxx.xx.xx>
To: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] Outernet Cube Sats
Message-ID: <1177958606.1500220.1478123295358@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
Katherine Courtney, Chief Executive of the UK Space Agency, visited Clyde
Space today and inspected an Outernet CubeSat. See the picture at
https://twitter.com/kcourtneybis/status/793759872357629953
73 Trevor M5AKA
On Wednesday, 2 November 2016, 21:32, Mike Hoblinski
<hobergenix@xxxxx.xxx> wrote:
I believe they are planning 3 cube sats from what I ran across
on their forum.
UHF downlink, VHF uplink 420 ? 450 MHz Transmit frequency covering the
amateur bands 130 ? 150 MHz Receive frequency covering the amateur bands
Transmit output power adjustable from 27 to 33 dBm o Adjustable in 3 dBm
steps 9600 baud GMSK, and 1200 baud AFSK data rates Implements AX.25
protocol encoding/decoding DTMF backdoor l Low-power Flash-based FPGA
Beacon (CW) mode Simple digital interfaces
Here is a link to their project
https://www.clyde.space/our-missions/10-outernet
Mike Hoblinski
N6IMF
_______________________________________________
Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
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------------------------------
Subject: Digest Footer
_______________________________________________
Sent via amsat-bb@xxxxx.xxx.
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End of AMSAT-BB Digest, Vol 11, Issue 355
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