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CX2SA  > SATDIG   27.10.18 12:12l 679 Lines 24036 Bytes #999 (0) @ WW
BID : AMSATBB13353
Read: GUEST
Subj: AMSAT-BB-digest V13 353
Path: IW8PGT<IR2UBX<IW2OHX<UA6ADV<CX2SA
Sent: 181027/1009Z @:CX2SA.SAL.URY.SOAM #:56664 [Salto] FBB7.00e $:AMSATBB13353
From: CX2SA@CX2SA.SAL.URY.SOAM
To  : SATDIG@WW

Today's Topics:

   1. Re: Falconsat (Mark L. Hammond)
   2. Re: Falconsat (Scott)
   3. Re: Falconsat (Endaf Buckley)
   4. Re: APRS to Moon orbit? (Eric Fort)
   5. UKube-1 falls silent (Hans BX2ABT)
   6. Re: Falconsat (Endaf Buckley)
   7. AO73 FUNcube -1 mode change (Graham Shirville)
   8. Re: APRS to Moon orbit? (Ross Whenmouth)
   9. Re: APRS to Moon orbit? (Robert Bruninga)
  10. Re: APRS to Moon orbit? (Robert Bruninga)
  11. 2018 AMSAT-NA 36th Annual Space Symposium and General Meeting
      Schedule (Robert Bankston)
  12. FLASH:  2018 AMSAT Symposium Tickets (Robert Bankston)
  13. Re: FLASH: 2018 AMSAT Symposium Tickets (Paul Stoetzer)
  14. Re: APRS to Moon orbit? (Nick Pugh)


----------------------------------------------------------------------

Message: 1
Date: Thu, 25 Oct 2018 18:13:16 -0400
From: "Mark L. Hammond" <marklhammond@?????.???>
To: "kb2mjeff@???.???? <kb2m@????.???>
Cc: Amsat <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Falconsat
Message-ID:
<CAPRXzyoyoHZ2yV=QePySzyx=76sdTut4FRjVZK_Tb=iOh50qTA@????.?????.???>
Content-Type: text/plain; charset="UTF-8"

I do :)

Mark N8MH

On Thu, Oct 25, 2018 at 6:02 PM <kb2mjeff@???.???> wrote:

> Is anyone using Falconsat anymore? I just work a pass, it?s been about 5
> months since I?ve last been on.
>
> 73 Jeff kb2m
>
>
> ---
> This email has been checked for viruses by AVG.
> https://www.avg.com
> _______________________________________________
> Sent via AMSAT-BB@?????.???. 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
>
--
Mark L. Hammond [N8MH]


------------------------------

Message: 2
Date: Thu, 25 Oct 2018 18:19:16 -0400
From: Scott <scott23192@?????.???>
To: amsat-bb@?????.???
Subject: Re: [amsat-bb] Falconsat
Message-ID:
<CAJCSnObKmA1eRBf6745FOmH5nHAhR3az3=KiaxWAObopQa_8Xw@????.?????.???>
Content-Type: text/plain; charset="UTF-8"

Hey Jeff!

I check in when the orbits match up with "live" on the radio time.  You'll
see a number of various calls East and from tweets & BBS messages I think
there are probably a greater number out West.  There's a good following in
EU & Japan, too.  Some of the most active folks are in Africa & South
America.

Here's a recent tweet of mine when the downlink was particularly impressive:

https://twitter.com/scott23192/status/1054121958487527429

-Scott,  K4KDR


=============================

On Thu, Oct 25, 2018 at 6:02 PM <kb2mjeff@???.???> wrote:

> Is anyone using Falconsat anymore? I just work a pass, it?s been about 5
> months since I?ve last been on.
>
> 73 Jeff kb2m
>


------------------------------

Message: 3
Date: Thu, 25 Oct 2018 15:03:57 -0700
From: Endaf Buckley <zerosignal@??????.???>
To: "kb2mjeff@???.???? <kb2m@????.???>
Cc: Amsat <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Falconsat
Message-ID: <A5A3B83B-49DC-4E24-995C-A8FD93C3AA03@??????.???>
Content-Type: text/plain; charset=utf-8

I am, mainly on the weekends.

Endaf

N6UTC

Sent from my iPhone

> On Oct 25, 2018, at 14:59, kb2mjeff@???.??? wrote:
>
> Is anyone using Falconsat anymore? I just work a pass, it?s been about 5
months since I?ve last been on.
>
> 73 Jeff kb2m
>
>
> ---
> This email has been checked for viruses by AVG.
> https://www.avg.com
> _______________________________________________
> Sent via AMSAT-BB@?????.???. 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: 4
Date: Thu, 25 Oct 2018 16:12:16 -0700
From: Eric Fort <eric.fort.listmail@??????????????.???>
To: Robert Bruninga <bruninga@????.???>
Cc: amsat-bb@?????.???
Subject: Re: [amsat-bb] APRS to Moon orbit?
Message-ID: <A5F76624-B3BE-436D-AE2C-936FEFB28DD0@??????????????.???>
Content-Type: text/plain;	charset=utf-8

Speaking to aperture of the vhf antenna on the spacecraft.... isn?t aperture
related directly to wavelength?  Ie one wants to maximize ?^2 to maximize
gain.  That being the case, wouldn?t vhf give a smaller aperture for a given
allowable antenna size?.... or am I missing something about spacecraft or
other design criteria that limits these choices, or maybe I just plain have
this completely wrong!  If I missed something or got the relationship
between aperture and wavelength wrong, please educate me.

Af6ep

Sent using SMTP.

> On Oct 25, 2018, at 2:46 PM, Robert Bruninga <bruninga@????.???> wrote:
>
> Here's a crazy idea for APRS to moon orbit (omni antenna).
>
> Unless I did something wrong, I think an Oscar class long yagi, and 250W
> amp and 1200 baud FM packet can be received out near the moon with 3 dB
> margin?  A key factor is that the nearly 16 dB of assumed noise floor we
> have here on the ground at VHF does not exist in deep space.  And VHF
> gives the largest receive aperture for a crossed dipole on the spacecraft.
>
> The omni UHF downlink is a bear.  But with quad UHF long yagis and a 100W
> transmitter at the moon distance we still come up about 12 dB short.  Can
> we make up for that with distributed processing gain from a minimum of 16
> Oscar class ground stations all phased together with the internet and GPS
> precise timing and a little software?
>
> If we could, then we have APRS out to moon orbit, with the downlink
> visible to all via the APRS internet system.  And in digipeating mode, we
> have half-earth coverage half the time when the moon is up.
>
> What did I do wrong?
>
> Bob, Wb4APR
> _______________________________________________
> Sent via AMSAT-BB@?????.???. 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: 5
Date: Fri, 26 Oct 2018 08:13:52 +0800
From: Hans BX2ABT <hans.bx2abt@???.?????.???>
To: amsat-bb@?????.???
Subject: [amsat-bb] UKube-1 falls silent
Message-ID: <26b42e26-3465-d775-0935-db69aba9d391@???.?????.???>
Content-Type: text/plain; charset=utf-8; format=flowed

This was posted on the Southgate ARS website:
http://www.southgatearc.org/news/2018/october/ukube-1-falls-silent.htm#.W9JaBZ
xs200

Luckily I heard this one for the first time mid-August with a strong CW
beacon.
http://bx2abt.com/main/data/_uploaded/media/20180816_0753_145845-ukube1.mp3

Another one bites the dust?



------------------------------

Message: 6
Date: Thu, 25 Oct 2018 15:03:57 -0700
From: Endaf Buckley <zerosignal@??????.???>
To: "kb2mjeff@???.???? <kb2m@????.???>
Cc: Amsat <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Falconsat
Message-ID: <A5A3B83B-49DC-4E24-995C-A8FD93C3AA03@??????.???>
Content-Type: text/plain; charset=utf-8

I am, mainly on the weekends.

Endaf

N6UTC

Sent from my iPhone

> On Oct 25, 2018, at 14:59, kb2mjeff@???.??? wrote:
>
> Is anyone using Falconsat anymore? I just work a pass, it?s been about 5
months since I?ve last been on.
>
> 73 Jeff kb2m
>
>
> ---
> This email has been checked for viruses by AVG.
> https://www.avg.com
> _______________________________________________
> Sent via AMSAT-BB@?????.???. 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: Fri, 26 Oct 2018 10:52:20 +0100
From: Graham Shirville <g.shirville@??????????.???>
To: AMSAT <amsat-bb@?????.???>,	"funcube@???????????.??.???
<funcube@???????????.??.??>,	Brian <g4bip@???????.??.??>
Subject: [amsat-bb] AO73 FUNcube -1 mode change
Message-ID: <1b0aa2e7-16e6-0f98-9518-9741b338c768@??????????.???>
Content-Type: text/plain; charset=utf-8; format=flowed

Hi All,

Just to report that AO73 is now in continuous educational mode with high
power telemetry whilst we continue to investigate the reasons for the
changes in spin rate that are taking place whilst the spacecraft is in
continuous sunlight.

Please enjoy the strong and easy to receive signals!

73
Graham
G3VZV


------------------------------

Message: 8
Date: Fri, 26 Oct 2018 22:50:00 +1300
From: Ross Whenmouth <ross@???????.??.??>
To: amsat-bb@?????.???
Subject: Re: [amsat-bb] APRS to Moon orbit?
Message-ID: <57fc147a-3205-d55c-173c-de8e532e34ab@???????.??.??>
Content-Type: text/plain; charset=utf-8; format=flowed

I strongly suggest using a modulation other than 1200 baud AFSK packet
(AX.25) over NBFM. The path you propose is severely power limited, and
AFSK over NBFM is at about a 7 to 10 dB penalty compared to other
modulations (like BPSK or direct FSK): https://www.rowetel.com/?p=3799

 From my perspective, it would be much easier to connect a PC soundcard
to an SSB transceiver to produce say 25W BPSK / MSK / etc than it would
be to "upgrade" my station to include a 250W amplifier + PSU, etc. Also,
a "9k6 ready" FM transceiver could be used for a direct FSK uplink (1200
bps direct FSK @ 50W ?), and the IF of an FM transceiver can be tapped
before the limiter, mixed down from 455 kHz to say 12 kHz and fed into
the line in of a PC soundcard, permitting a BPSK etc downlink to be
received with an FM rig and demodulated in software on the PC...

AX.25 packet doesn't have any forward error correction, thus a single
bit error results in the whole packet being dropped (we can do better!):
http://www.stensat.org/docs/FX-25_01_06.pdf


Assuming that the bird was in an "earth-synchronous" polar orbit around
the moon, it would always have line of sight to the surface of the
earth, and a gain antenna pointed perpendicular to the plane of the
polar orbit would always face the earth. I believe that getting mass to
lunar orbit is horrendously expensive, so would it make more sense to
use a gain antenna on the satellite? a 100W UHF amplifier (for an omni
antenna) requires quite a bit of power and cooling to operate, and I bet
that cooling a 100W amplifier in a vacuum and microgravity is an
"interesting" engineering challenge...


Dare I say it, but the path loss to / from geostationary earth orbit is
significantly less, the coverage area is still really good (like a 1/3rd
of the earths surface from a single satellite) and we've probably got
far more chance of getting a payload there (es'hail-2...).


73 ZL2WRW
Ross Whenmouth


On 26/10/18 10:59 AM, amsat-bb-request@?????.??? wrote:
> Message: 8
> Date: Thu, 25 Oct 2018 17:46:23 -0400
> From: Robert Bruninga<bruninga@????.???>
> To:amsat-bb@?????.???
> Subject: [amsat-bb] APRS to Moon orbit?
> Message-ID:<9916263926d9b8f446280d0b78967759@????.?????.???>
> Content-Type: text/plain; charset="UTF-8"
>
> Here's a crazy idea for APRS to moon orbit (omni antenna).
>
> Unless I did something wrong, I think an Oscar class long yagi, and 250W
> amp and 1200 baud FM packet can be received out near the moon with 3 dB
> margin?  A key factor is that the nearly 16 dB of assumed noise floor we
> have here on the ground at VHF does not exist in deep space.  And VHF
> gives the largest receive aperture for a crossed dipole on the spacecraft.
>
> The omni UHF downlink is a bear.  But with quad UHF long yagis and a 100W
> transmitter at the moon distance we still come up about 12 dB short.  Can
> we make up for that with distributed processing gain from a minimum of 16
> Oscar class ground stations all phased together with the internet and GPS
> precise timing and a little software?
>
> If we could, then we have APRS out to moon orbit, with the downlink
> visible to all via the APRS internet system.  And in digipeating mode, we
> have half-earth coverage half the time when the moon is up.
>
> What did I do wrong?
>
> Bob, Wb4APR



------------------------------

Message: 9
Date: Fri, 26 Oct 2018 09:05:52 -0400
From: Robert Bruninga <bruninga@????.???>
To: Eric Fort <eric.fort.listmail@??????????????.???>
Cc: amsat-bb@?????.???
Subject: Re: [amsat-bb] APRS to Moon orbit?
Message-ID: <78243947ccb691cfb13de85953229ff4@????.?????.???>
Content-Type: text/plain; charset="UTF-8"

Antenna area goes up as ?^2 but path loss also goes up by ?^2 so for the
same area the overall path loss is the same independent of frequency.  BUT
only with crossed dipoles can you get an omni pattern easily with two simple
wires.  Bob, WB4APR

-----Original Message-----
From: Eric Fort <eric.fort.listmail@??????????????.???>
Sent: Thursday, October 25, 2018 7:12 PM
To: Robert Bruninga <bruninga@????.???>
Cc: amsat-bb@?????.???
Subject: Re: [amsat-bb] APRS to Moon orbit?

Speaking to aperture of the vhf antenna on the spacecraft.... isn?t aperture
related directly to wavelength?  Ie one wants to maximize ?^2 to maximize
gain.  That being the case, wouldn?t vhf give a smaller aperture for a given
allowable antenna size?.... or am I missing something about spacecraft or
other design criteria that limits these choices, or maybe I just plain have
this completely wrong!  If I missed something or got the relationship
between aperture and wavelength wrong, please educate me.

Af6ep

Sent using SMTP.

> On Oct 25, 2018, at 2:46 PM, Robert Bruninga <bruninga@????.???> wrote:
>
> Here's a crazy idea for APRS to moon orbit (omni antenna).
>
> Unless I did something wrong, I think an Oscar class long yagi, and
> 250W amp and 1200 baud FM packet can be received out near the moon
> with 3 dB margin?  A key factor is that the nearly 16 dB of assumed
> noise floor we have here on the ground at VHF does not exist in deep
> space.  And VHF gives the largest receive aperture for a crossed dipole on
> the spacecraft.
>
> The omni UHF downlink is a bear.  But with quad UHF long yagis and a
> 100W transmitter at the moon distance we still come up about 12 dB
> short.  Can we make up for that with distributed processing gain from
> a minimum of 16 Oscar class ground stations all phased together with
> the internet and GPS precise timing and a little software?
>
> If we could, then we have APRS out to moon orbit, with the downlink
> visible to all via the APRS internet system.  And in digipeating mode,
> we have half-earth coverage half the time when the moon is up.
>
> What did I do wrong?
>
> Bob, Wb4APR
> _______________________________________________
> Sent via AMSAT-BB@?????.???. 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: 10
Date: Fri, 26 Oct 2018 09:17:22 -0400
From: Robert Bruninga <bruninga@????.???>
To: amsat-bb@?????.???
Subject: Re: [amsat-bb] APRS to Moon orbit?
Message-ID: <772b5d3c78bb8de4e8135db9a72245bb@????.?????.???>
Content-Type: text/plain; charset="UTF-8"

You may have missed the key element.  The antenna on the spacecraft for
this specific comm link must be omni directional to be considered a
"backup" comm system.  And by definition, omni antennas have 0 dB gain.

Also one cannot tap into an FM IF before the limiter for linear modes
because it does not have the AGC circuitry necessary to maintain linearity
through all stages.  BPSK needs linear stages on both transmit and
receive.  But I do agree that a linear narrowband mode is more likely the
optimum solution for the downlink, but I just wanted to see what was
possible.
Bob

-----Original Message-----
From: AMSAT-BB < Ross Whenmouth
Subject: Re: [amsat-bb] APRS to Moon orbit?

I strongly suggest using a modulation other than 1200 baud AFSK packet
(AX.25) over NBFM. The path you propose is severely power limited, and
AFSK over NBFM is at about a 7 to 10 dB penalty compared to other
modulations (like BPSK or direct FSK): https://www.rowetel.com/?p=3799

 From my perspective, it would be much easier to connect a PC soundcard to
an SSB transceiver to produce say 25W BPSK / MSK / etc than it would be to
"upgrade" my station to include a 250W amplifier + PSU, etc. Also, a "9k6
ready" FM transceiver could be used for a direct FSK uplink (1200 bps
direct FSK @ 50W ?), and the IF of an FM transceiver can be tapped before
the limiter, mixed down from 455 kHz to say 12 kHz and fed into the line
in of a PC soundcard, permitting a BPSK etc downlink to be received with
an FM rig and demodulated in software on the PC...

AX.25 packet doesn't have any forward error correction, thus a single bit
error results in the whole packet being dropped (we can do better!):
http://www.stensat.org/docs/FX-25_01_06.pdf


Assuming that the bird was in an "earth-synchronous" polar orbit around
the moon, it would always have line of sight to the surface of the
earth, and a gain antenna pointed perpendicular to the plane of the
polar orbit would always face the earth. I believe that getting mass to
lunar orbit is horrendously expensive, so would it make more sense to
use a gain antenna on the satellite? a 100W UHF amplifier (for an omni
antenna) requires quite a bit of power and cooling to operate, and I bet
that cooling a 100W amplifier in a vacuum and microgravity is an
"interesting" engineering challenge...


Dare I say it, but the path loss to / from geostationary earth orbit is
significantly less, the coverage area is still really good (like a 1/3rd
of the earths surface from a single satellite) and we've probably got
far more chance of getting a payload there (es'hail-2...).


73 ZL2WRW
Ross Whenmouth


On 26/10/18 10:59 AM, amsat-bb-request@?????.??? wrote:
> From: Robert Bruninga<bruninga@????.???>
>
> Here's a crazy idea for APRS to moon orbit (omni antenna).
>
> Unless I did something wrong, I think an Oscar class long yagi, and 250W
> amp and 1200 baud FM packet can be received out near the moon with 3 dB
> margin?  A key factor is that the nearly 16 dB of assumed noise floor we
> have here on the ground at VHF does not exist in deep space.  And VHF
> gives the largest receive aperture for a crossed dipole on the
spacecraft.
>
> The omni UHF downlink is a bear.  But with quad UHF long yagis and a
100W
> transmitter at the moon distance we still come up about 12 dB short.
Can
> we make up for that with distributed processing gain from a minimum of
16
> Oscar class ground stations all phased together with the internet and
GPS
> precise timing and a little software?
>
> If we could, then we have APRS out to moon orbit, with the downlink
> visible to all via the APRS internet system.  And in digipeating mode,
we
> have half-earth coverage half the time when the moon is up.
>
> What did I do wrong?
>
> Bob, Wb4APR


------------------------------

Message: 11
Date: Fri, 26 Oct 2018 16:25:41 +0000 (UTC)
From: Robert Bankston <ke4al@?????.???>
To: AMSAT BB <amsat-bb@?????.???>
Subject: [amsat-bb] 2018 AMSAT-NA 36th Annual Space Symposium and
General Meeting Schedule
Message-ID: <1404077199.214198.1540571141517@????.?????.???>
Content-Type: text/plain; charset=UTF-8

NEWS FLASH:

The list of papers to be presented at the 2018 AMSAT-NA 36th Annual Space
Symposium and General Meeting, as well as the? AMSAT Ambassador Breakfast
have been added to the Schedule on the AMSAT website.

http://www.amsat.org/symposium-schedule/

73,
Robert KE4AL
2018 AMSAT Symposium Chair


------------------------------

Message: 12
Date: Fri, 26 Oct 2018 19:17:20 +0000 (UTC)
From: Robert Bankston <ke4al@?????.???>
To: AMSAT BB <amsat-bb@?????.???>
Subject: [amsat-bb] FLASH:  2018 AMSAT Symposium Tickets
Message-ID: <1277380687.304287.1540581440057@????.?????.???>
Content-Type: text/plain; charset=UTF-8

We are one week out from the 2018 AMSAT-NA 36th Annual Space Symposium and
General Meeting, November 2-4, at the U.S. Space and Rocket Center,
Huntsville Alabama.

Online ticket sales end at Noon (EST), October 29th. Tickets to the
Symposium can still be purchased at the door, but the price increases to
$70.? Banquet tickets will NOT be available for purchase after Monday.

It is going to be a great Symposium, so don't miss out.

I look forward to all of the eyeball QSOs.

73,
Robert Bankston
2018 AMSAT Symposium Chair


------------------------------

Message: 13
Date: Fri, 26 Oct 2018 15:32:58 -0400
From: Paul Stoetzer <n8hm@????.???>
To: Robert Bankston <ke4al@?????.???>
Cc: AMSAT BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] FLASH: 2018 AMSAT Symposium Tickets
Message-ID:
<CABzOSOr0FkvXoe5Yqt+-xbn1jq4vKtJFQ75quv__Upp8F9Zn4g@????.?????.???>
Content-Type: text/plain; charset="UTF-8"

Online purchases can be made on the AMSAT store at the following link:

https://www.amsat.org/product-category/amsat-symposium/

If any AMSAT members have problems logging into their account, please
email me directly. Any non-AMSAT members should create an account at
checkout (please use your callsign as your username).

73,

Paul, N8HM
On Fri, Oct 26, 2018 at 3:17 PM Robert Bankston via AMSAT-BB
<amsat-bb@?????.???> wrote:
>
> We are one week out from the 2018 AMSAT-NA 36th Annual Space Symposium and
General Meeting, November 2-4, at the U.S. Space and Rocket Center,
Huntsville Alabama.
>
> Online ticket sales end at Noon (EST), October 29th. Tickets to the
Symposium can still be purchased at the door, but the price increases to
$70.  Banquet tickets will NOT be available for purchase after Monday.
>
> It is going to be a great Symposium, so don't miss out.
>
> I look forward to all of the eyeball QSOs.
>
> 73,
> Robert Bankston
> 2018 AMSAT Symposium Chair
> _______________________________________________
> Sent via AMSAT-BB@?????.???. 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: 14
Date: Sat, 27 Oct 2018 05:05:19 -0500
From: "Nick Pugh" <quadpugh@?????????.???>
To: "'Ross Whenmouth'" <ross@???????.??.??>,	<amsat-bb@?????.???>
Subject: Re: [amsat-bb] APRS to Moon orbit?
Message-ID: <fb7801d46ddc$921465b0$b63d3110$@?????????.???>
Content-Type: text/plain;	charset="iso-8859-1"


Check Out LORA The device SX1276 is a transceiver chip with a sensitivity of
-148 dbm the drawback is it achieve this at a penalty of 11 baud. The CAPE
team will fly it on its next mission.

nick

Cell????? 337 258 2527
?
Helping UL become a world Class Engineering ?and Educational School
Disagree I Learn





------------------------------

Subject: Digest Footer

_______________________________________________
Sent via amsat-bb@?????.???.
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 member? Join now to support the amateur satellite program!
http://www.amsat.org/mailman/listinfo/amsat-bb

------------------------------

End of AMSAT-BB Digest, Vol 13, Issue 353
*****************************************


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