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CX2SA > SATDIG 27.05.08 08:57l 479 Lines 16160 Bytes #999 (0) @ WW
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Sent: 080527/0655Z @:CX2SA.LAV.URY.SA #:6012 [Minas] FBB7.00e $:6012_CX2SA
From: CX2SA@CX2SA.LAV.URY.SA
To : SATDIG@WW
Today's Topics:
1. Re: Yubileiny Digital Fm Signal (i8cvs)
2. Re: LVB Tracker 1 Nova fix (Alan)
3. Re: Yubileiny RS30 telemetry (Graham Shirville)
4. RS-30 telemetry hypothesis (Mineo Wakita)
5. Strange Signals from Yubileiny (john heath)
6. ANDE (Nigel Gunn G8IFF/W8IFF)
7. newbie question Icom 910H & LEO antennas (Jim Danehy)
8. Re: Yubileiny(RS30) strange signal (SV1BSX)
9. Re: LVB Tracker 1 Nova fix (Howard Long)
10. Orbit types (Chris Bloy)
11. RS-30: 435.215 vs 435.315 TX power (Henk, PA3GUO)
12. Kantronics 9612+ Modem Mode (David Johnson)
----------------------------------------------------------------------
Message: 1
Date: Mon, 26 May 2008 15:48:58 +0200
From: "i8cvs" <domenico.i8cvs(AT)tin.it>
Subject: [amsat-bb] Re: Yubileiny Digital Fm Signal
To: "Robert Turlington" <rob_g8ate(AT)hotmail.com>, "Amsat Buleitin
Board" <amsat-bb(AT)amsat.org>, "Andy Thomas"
<andythomasmail(AT)yahoo.co.uk>, "John Heath"
<g7hia(AT)btinternet.com>
Message-ID: <002301c8bf37$3fdb43e0$0201a8c0(AT)tin.it>
Content-Type: text/plain; charset="iso-8859-1"
----- Original Message -----
From: "Robert Turlington" <rob_g8ate(AT)hotmail.com>
To: "Amsat Buleitin Board" <amsat-bb(AT)amsat.org>; "Andy Thomas"
<andythomasmail(AT)yahoo.co.uk>; "John Heath" <g7hia(AT)btinternet.com>
Sent: Monday, May 26, 2008 12:32 PM
Subject: [amsat-bb] Yubileiny Digital Fm Signal
>
>
> Hi All
> using Spectogram I analysed the audio signal from Yubileiny as follows:-
> main carrier 2400hz the bandwidth being 120hz wide so far as could tell.
> I estimate that the central carrier was pulsing at 4 times/sec,
> if these figures sound familiar to anybody please let me know!
> Regards Robert G8ATE
>
Hi Robert, G8ATE
The early APT satellites ESSA-8, TIROS and ITOS during 1972 were
transmitting in FM at 136 MHz and after discrimination a continuous
subcarrier of 2400 Hz was extracted.
This subcarrier was AM modulated by the video signal at a rate of 4
pulses /second
The 2400 Hz subcarrier transmitted by the satellite was used by the
ground station as a reference signal to lock in frequency and in phase
a 2400 Hz local oscillator
This generated 2400 Hz signal was then divided by 40 to get a 60 Hz
signal to rotate upon amplification the drum of a Faximile at a syncronized
speed of 4 turns / seconds i.e. at 4 picture lines / second
Alternatively the 2400 Hz signal was divided by 600 to get 4 pulses
per second to syncronize the X axis of an oscilloscope to get the
horizontal scanning at a rate of 4 lines / second and develope the picture
directly on screen using a camera in a dark room.
I still have this equipments in the shak just to remember the early APT
time when the computer was not currently available for the amateur radio.
In a separate email I have sent to you some pictures received from ESSA-8
and ITOS at 4 lines/second.
I hope this helps
73" de
i8CVS Domenico
------------------------------
Message: 2
Date: Mon, 26 May 2008 08:55:06 -0500
From: "Alan" <ve4yz(AT)mts.net>
Subject: [amsat-bb] Re: LVB Tracker 1 Nova fix
To: "'Howard Long'" <howard(AT)howardlong.com>, <amsat-bb(AT)amsat.org>
Message-ID: <BFB31DA0E2484951A00614A995969357(AT)athlon>
Content-Type: text/plain; charset="us-ascii"
Thank you Howard...
Suggestion for the AMSAT LVB Tracker Team; perhaps on future versions of the
assembled kit you might provide a MAX232 chip as a spare part on the USB
models. The USB daughter board needs to be removed and the MAX232 inserted
for reprogramming the PIC as all documentation suggests USB programming is
not reliable.
If anyone has successfully reprogrammed though the USB, please let me know
and I'll try it.
-----Original Message-----
From: amsat-bb-bounces(AT)amsat.org [mailto:amsat-bb-bounces(AT)amsat.org] On
Behalf Of Howard Long
Sent: May 26, 2008 5:39 AM
To: amsat-bb(AT)amsat.org
Subject: [amsat-bb] LVB Tracker 1 Nova fix
Folks
A few weeks ago my attention was drawn to a compatibility problem with Nova
and the LVB Tracker 1. I believe that I have found the fault, but it is not
clear why it has taken so long for this problem to occur, especially as Nova
has been my tracking program of choce for many years! It may only affect
more recent versione of Nova.
I have adjusted the LVB Tecker's Baud Rate Generator slightly to be much
closer to 9600bps. I must have made an error in my calculations all those
years ago, so it was only operating at 9259bps. I have adjusted the BRG by
one to make 9616bps and things seem to be much better now. Technically, we
were only 3.5% out anyway which normally would be OK (ISTR that 5% timing
error is the limit).
Anyway, new 0.9 binaries and source here:
http://www.g6lvb.com/Articles/LVBTrack.hex
http://www.g6lvb.com/Articles/LVBTrack.c
73, Howard G6LVB
_______________________________________________
Sent via AMSAT-BB(AT)amsat.org. Opinions expressed are those of the author.
Not an AMSAT-NA member? Join now to support the amateur satellite program!
Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 3
Date: Mon, 26 May 2008 15:47:44 +0100
From: "Graham Shirville" <g.shirville(AT)btinternet.com>
Subject: [amsat-bb] Re: Yubileiny RS30 telemetry
To: <G0MRF(AT)aol.com>, <amsat-bb(AT)AMSAT.Org>
Message-ID: <009601c8bf3f$77d2d5d0$0412a8c0(AT)allgood.local>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
Hi David,
I have just had a listen down here in West France IN95TV.
Very strong data signal around 435.315 and simultaneous equally strong short
bursts of CW around 435.215...all using just my trusty THF6 handheld (the
same one that was used in Plesetsk!) with a short diamond whip!
As you have said a lovely orbit with nice long passes.....
a bientot
73
Graham
F/G3VZV
------------------------------
Message: 4
Date: Tue, 27 May 2008 00:46:34 +0900
From: Mineo Wakita <ei7m-wkt(AT)asahi-net.or.jp>
Subject: [amsat-bb] RS-30 telemetry hypothesis
To: amsat-bb(AT)amsat.org
Message-ID: <5FC8BF47AD7BD7ei7m-wkt(AT)asahi-net.or.jp>
Content-Type: text/plain; charset=us-ascii
Name Limits Decoding Assignment
-------------------------------------------------------------------------
RS30 Callsign
US N= 100:170 [V] U= N / 10 On board voltage
IBS N= 10:250 [A] I= N / 100 On board current
USUN N= 0:180 [V] U= N / 10 Volts Charge voltage from solar battery
ISUN N= 0:180 [A] I= N / 100 Ampers Charge current from solar battery
ITXA N= 0:170 [A] I= N / 100 Ampers D.C. current of the 435 MHz TX
ITXB N= 0:150 [A] I= N / 100 Ampers D.C. current of the 145 MHz TX
TTXA N= 50:190 [C] T= N - 100 Temperature of the 435 MHz TX
TTXB N= 50:190 [C] T= N - 100 Temperature of the 145 MHz TX
TNAP N= 50:190 [C] T= N - 100 Temperature of the navigation unit
TAB N= 50:190 [C] T= N - 100 Temperature of the inner case
MSEP N= 30:250 [?] T= N - 100 Mode of the separator
MCON N= 30:250 [?] T= N - 100 Mode of the controller
SMA N= 0:255 The operational modes. The housekeeping info. of 435 MHz
SMB N= 0:255 The operational modes. The housekeeping info. of 145 MHz
MRXA N= 0:255 The operational modes. The housekeeping info. of 435 MHz
MRXB N= 0:255 The operational modes. The housekeeping info. of 145 MHz
------------------------------
Message: 5
Date: Mon, 26 May 2008 16:58:13 +0100
From: "john heath" <g7hia(AT)btinternet.com>
Subject: [amsat-bb] Strange Signals from Yubileiny
To: "amsat" <amsat-bb(AT)amsat.org>
Message-ID: <000801c8bf49$4f86c7d0$4101a8c0(AT)MainPC>
Content-Type: text/plain; charset="iso-8859-1"
Is this a possible explanation for the "strange" signals from Yubileiny.
I found it on that well konw source of reliable information WIKIPEDIA
The satellite will broadcast audio and video about the history of the Soviet
and Russian space programmes, as well as signals imitating those broadcast by
Sputnik 1.[2] These signals are intended for reciept by Amateur radio
enthusiasts.
73 John G7HIA
------------------------------
Message: 6
Date: Mon, 26 May 2008 16:15:29 +0000
From: Nigel Gunn G8IFF/W8IFF <nigel(AT)ngunn.net>
Subject: [amsat-bb] ANDE
To: amsat-bb(AT)amsat.org
Message-ID: <483AE221.5010501(AT)ngunn.net>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Anybody got a clear enough sky to see ANDE?
Should be at around 144 thousand feet (flight level 1443 for you pilots)
------------------------------
Message: 7
Date: Mon, 26 May 2008 11:26:00 -0400
From: "Jim Danehy" <jdanehy(AT)cinci.rr.com>
Subject: [amsat-bb] newbie question Icom 910H & LEO antennas
To: <amsat-bb(AT)amsat.org>
Message-ID: <044B4DEF886D42A18BB0FA0BF2919C82(AT)JamesPC>
Content-Type: text/plain; charset="iso-8859-1"
Although licensed for 55 years + , I am just now an SWL on the birds. I did
Oscar 6 in ~ 1975. Having worked and confirmed all of the DXCC countries and
just recently retired, the birds have my interest. I have plenty of 1/2 inch
and 7/8 inch hardline and connectors as well as a Kenpro G 500 elevation
rotor. I have an Elecraft K2 with their transverter and a Microwave Module
with satellite capability for 435. Just need some antennas. I am also thinking
of getting a more modern rig and the Icom 910 caught my eye. A friend of mine
has a Yaseu 736 which he will sell me with 2 and 440 modules. No price
discussed yet but I thought $700 would be my top. As an alternative I thought
about the Icom 910H. The only concern was a comment I read on EHam that it was
not user friendly on the FM birds being more friendly to the JA birds. Is the
910 capable of doing AO 51 OK or is it a pain ? Often information can be
misleading. This is my first post here on the BB. If there is any bird oper!
ator close to Cincinnati, Ohio , I would love to visit your station. I do
have the old style Mirage bricks for 2 and 432 too. I thought of Egg beaters
from M Square but now leaning more toward the 10 foot long circular yagis for
2 and 432.
Any info or comments would be greatly appreciated. Hope to QSO many of you
soon.
73 Jim W9VNE
------------------------------
Message: 8
Date: Mon, 26 May 2008 20:00:34 +0300
From: "SV1BSX" <sv1bsx(AT)yahoo.gr>
Subject: [amsat-bb] Re: Yubileiny(RS30) strange signal
To: <eu-amsat(AT)yahoogroups.com>
Cc: amsat-bb(AT)amsat.org
Message-ID: <001301c8bf52$06a8ac00$0b09a8c0(AT)zeus>
Content-Type: text/plain; format=flowed; charset="windows-1253";
reply-type=original
Hi all,
I heard this afternoon YUBI'y on asceding orbit over E.Europe (14:30 Z).
Signals were 53-57 with just a 6 El Yagi horizontal polarized.
BTW the receiving signal remains to me the..... Woody - Woodpecker !!!
(if you put the Mode to USB.)
The signal was easily received during the whole pass (AT) 435.312,
without signifficant fading.
I observed also that the Doppler-drift was minimal - no significant for
USB, so I think the transmitting signal is probably FM.
I used an external MIC for the recording. In practice the audio was very
good.
I noticed that the transmittion following a tempo , about 60 sec "Woody", 4
sec pause, again 60 sec "Woody", 4 sec pause... etc etc.
A small audio sample is here:
http://sv1bsx.50webs.com/yubi/yubimp3.mp3
73, Mak SV1BSX
----- Original Message -----
From: "Mineo Wakita" <ei7m-wkt(AT)asahi-net.or.jp>
To: <amsat-bb(AT)amsat.org>
Sent: Monday, May 26, 2008 2:35 PM
Subject: [amsat-bb] Yubileiny(RS30) strange signal
>
> I heard today the strange signal like WeatherSat or RTTY
> from Yubileiny(RS30) at 435.315MHz.
> http://www.ne.jp/asahi/hamradio/je9pel/80526yub.wav
>
> de JE9PEL, Mineo Wakita
>
> _______________________________________________
> Sent via AMSAT-BB(AT)amsat.org. Opinions expressed are those of the author.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 9
Date: Mon, 26 May 2008 19:04:42 +0100
From: "Howard Long" <howard(AT)howardlong.com>
Subject: [amsat-bb] Re: LVB Tracker 1 Nova fix
To: "'Howard Long'" <howard(AT)howardlong.com>, <amsat-bb(AT)amsat.org>
Message-ID: <6F6203A4527C4D2CBAAAF556BED8F01C(AT)LAPTOP9>
Content-Type: text/plain; charset="us-ascii"
Folks
Sorry, the URLs I gave were a bit wrong, they should be:
http://www.g6lvb.com/Articles/LVBTracker/LVBTrack.hex
http://www.g6lvb.com/Articles/LVBTracker/LVBTrack.c
Cheers, Howard
-----Original Message-----
From: amsat-bb-bounces(AT)amsat.org [mailto:amsat-bb-bounces(AT)amsat.org] On
Behalf Of Howard Long
Sent: 26 May 2008 11:39
To: amsat-bb(AT)amsat.org
Subject: [amsat-bb] LVB Tracker 1 Nova fix
Folks
A few weeks ago my attention was drawn to a compatibility problem with Nova
and the LVB Tracker 1. I believe that I have found the fault, but it is not
clear why it has taken so long for this problem to occur, especially as Nova
has been my tracking program of choce for many years! It may only affect
more recent versione of Nova.
I have adjusted the LVB Tecker's Baud Rate Generator slightly to be much
closer to 9600bps. I must have made an error in my calculations all those
years ago, so it was only operating at 9259bps. I have adjusted the BRG by
one to make 9616bps and things seem to be much better now. Technically, we
were only 3.5% out anyway which normally would be OK (ISTR that 5% timing
error is the limit).
Anyway, new 0.9 binaries and source here:
http://www.g6lvb.com/Articles/LVBTrack.hex
http://www.g6lvb.com/Articles/LVBTrack.c
73, Howard G6LVB
_______________________________________________
Sent via AMSAT-BB(AT)amsat.org. Opinions expressed are those of the author.
Not an AMSAT-NA member? Join now to support the amateur satellite program!
Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 10
Date: Mon, 26 May 2008 18:20:28 +0100
From: "Chris Bloy" <chris(AT)photofuture.co.uk>
Subject: [amsat-bb] Orbit types
To: amsat-bb(AT)amsat.org
Message-ID: <WorldClient-F200805261820.AA20280002(AT)photofuture.co.uk>
Content-Type: text/plain; charset=us-ascii
Hi all,
How can I tell what type an orbit a satellite is in, say based on Orbitron?
I can see that RS-30 appears to have 100% sunlight and orbits over the Polar
region, so one assumes a Polar Orbit??
Is it as simple as that, I have a talk to give to a scout group, and wanted
to make it a bit more interactive...
Does the amount of sunlight have a different name as well??
Hopefully this makes sense and isn't too stupid!
Thanks..
Chris
------------------------------
Message: 11
Date: Mon, 26 May 2008 20:41:57 +0200 (CEST)
From: "Henk, PA3GUO" <hamoen(AT)iae.nl>
Subject: [amsat-bb] RS-30: 435.215 vs 435.315 TX power
To: <amsat-bb(AT)amsat.org>
Message-ID: <1256.212.61.85.173.1211827317.squirrel(AT)webmail.iae.nl>
Content-Type: text/plain; charset=iso-8859-1
I have the impression that in case
.315 has max output, .215 has low output power (sometimes)
.315 has low output, .215 has high output power (sometimes)
but that both .215 and .315 can be very strong.
For example, 315 was relative weak (FM) for a while,
and at that time .215 was very load with CW.
Object C is now best fit here.
Henk, PA3GUO
------------------------------
Message: 12
Date: Mon, 26 May 2008 19:58:32 +0100
From: David Johnson <dave(AT)g4dpz.me.uk>
Subject: [amsat-bb] Kantronics 9612+ Modem Mode
To: AMSAT-BB <amsat-bb(AT)amsat.org>
Message-ID: <E953D407-31DF-4B3E-AF93-C03F4F45AEA4(AT)g4dpz.me.uk>
Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes
Hi,
I've just acquired a 9612+ I can get it into modem mode at 1200 baud.
Does anyone know if / how it can be used at 9600 baud in modem mode
when using port 2.
73
Dave
------------------------------
_______________________________________________
Sent via amsat-bb(AT)amsat.org. Opinions expressed are those of the author.
Not an AMSAT member? Join now to support the amateur satellite program!
http://amsat.org/mailman/listinfo/amsat-bb
End of AMSAT-BB Digest, Vol 3, Issue 263
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