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CX2SA > SATDIG 06.10.18 03:24l 990 Lines 42263 Bytes #999 (0) @ WW
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Sent: 181006/0118Z @:CX2SA.SAL.URY.SOAM #:54840 [Salto] FBB7.00e $:AMSATBB13330
From: CX2SA@CX2SA.SAL.URY.SOAM
To : SATDIG@WW
Today's Topics:
1. AO-91/92 Transatlantic (Peter Green)
2. Re: AO-91/92/85 DUV Decode Sovled (Albert van Deursen)
3. CT Qso for WAS Satellite (alex weimer)
4. Re: AO-91/92/85 DUV Decode Sovled (Mark L. Hammond)
5. Re: AO-91/92 Transatlantic (Burns Fisher)
6. Re: AO-91/92 Transatlantic (Burns Fisher)
7. Re: 1957 (B J)
8. Re: 1957 (GEO Badger)
9. Re: Sputnik (Richard Tejera)
10. Was: 1957; now Voyager (Ed K9EK)
----------------------------------------------------------------------
Message: 1
Date: Fri, 05 Oct 2018 21:26:34 +0100
From: Peter Green <peteragreen@??.???>
To: amsat-bb@?????.???
Subject: [amsat-bb] AO-91/92 Transatlantic
Message-ID: <8072D986-7177-4100-87CC-F9CFEFE55D6B@??.???>
Content-Type: text/plain; charset=utf-8
Today via AO-91 I had the privilege of working KB2YSI, Don for his first
transatlantic QSO and W2GIO.
As Don said on twitter it sounded like simplex.
AO-91 and to a lesser degree AO-92 have some great later afternoon passes
(UK time) for the USA and Canada (east coast) and most of the time there is
no one on them.
Quite often there are Europeans calling for the ?DX?
So please be a ?DX? station for us, work FM transatlantic we would love to
hear you.
Best 73
Pete G0ABI
------------------------------
Message: 2
Date: Sat, 6 Oct 2018 00:21:56 +0200
From: "Albert van Deursen" <avdeur@????.??>
To: "'Hasan al-Basri'" <hbasri.schiers6@?????.???>,
<amsat-bb@?????.???>
Cc: 'Burns Fisher' <burns@??????.??>, "'Stephen E. Belter'"
<seb@??????.???>
Subject: Re: [amsat-bb] AO-91/92/85 DUV Decode Sovled
Message-ID: <000c01d45cf9$d3eb6ae0$7bc240a0$@??>
Content-Type: text/plain; charset="UTF-8"
HI Hasan, thanks this info and the clear solution ( considering your
packetstream !) to the issue as you earlier described.
I must admit that I unchecked these 2 equalizer option a few days ago but
wasn't smart enough to consider this action after I suddenly started to rx
frames. (Hadn't had time to check all birds since my mail but with Fox1A
coming up in 26 minutes at 73.9 degress I will do some "eating" and get the
proof of this "pudding" HI
Thanks yr work on this subject. 73 Albert PD0OXW
-----Original Message-----
From: Hasan al-Basri [mailto:hbasri.schiers6@?????.????
Sent: 05 October 2018 18:11
To: amsat-bb@?????.???
Subject: [amsat-bb] AO-91/92/85 DUV Decode Sovled
Thanks to all of you and the last magic bullet from Terry, ZL2BAC.
Setup:
2m EggBeater at 7', 80' 9913 coax
AirSpy HF+, SDR-Console V3.03
FoxTelem 1.06r patched
VBAudio from SDRC > Decoder
Checked L/R audio, not an issue for me, as I was getting audio in both
channels. I unchecked Left Audio, to be safe. (FoxTelem)
Symptom: Could not decode DUV telemetry, did not see Eye fully open, always
smeared, and no squared off peaks in the freq display of FoxTelem.
Solution
1. Not only is there a high pass filter in the Narrow FM setting of SDRC
V3, but *there is a second HiPass* in :
Receive > Options > Equalizer ...in the bottom right hand corner, two
check boxes, Equalizer and 25 Hz filter. They were checked since install, I
had never looked at the Equalizer in all these months of use.
Summary Settings That Work:
SDRC: NFM, 12 kHz
Audio Output Slider 60%
CABLE Input (VB-Audio Virtual Cable)
Narrow FM: Highpas OFF
Receive > Options > Equalizer OFF, HPF OFF
FoxTelem Settings: (Aside from my location/call/etc)
Input Screen:
DUV (not Auto)
Input: CABLE Output (VB-Audio Virtual Cable)
View Filtered Audio
Raised Cosine
Cutoff Freq: 200 Hz
Filter Length: 512
Settings Screen:
All Defaults, except:
FoxTelem Calculates Position
Auto Start Decoder when above horizon
Decoder Options:
Upload to Server
Track Doppler (probably not needed as SDRC is doing this and I'm not using
FunCube)
Store Payloads
Fix Dropped Bits
use Long PRM
Debug Options:
Use Native File Chooser
=================================
My one remaining question:
At the finish of this 15 deg pass, I got 53 Frames, 57 Payloads, and
Queued: 53
When does the queued data get uploaded? It's been half an hour and nothing
has happened and I'm not showing up as a ground station.
Signals were far from outstanding, so I wouldn't say it is hard to get TLM
copied. 15 deg EL on an Eggbeater only 7' off the ground is not a great
pass. Lots of fades, lots of noise much of the time.
Thanks to all for help. Now I can make a habit og grabbing TLM.
73 N0AN
Hasan
------------------------------
Message: 3
Date: Fri, 5 Oct 2018 18:32:56 -0400 (EDT)
From: alex weimer <ingejack@???.???>
To: amsat-bb@?????.???
Subject: [amsat-bb] CT Qso for WAS Satellite
Message-ID: <1997540423.22528.1538778776125@???????.???.???>
Content-Type: text/plain; charset=UTF-8
I would like to have a qso with someone from CT to confirm my last state for
WAS Satellite. I am available most times either on the FM or Linear Sats. I
would like to confirm a contact via LOTW. If any stations in CT are willing
to set up a schedule I would really appreciate it. Please email me to set up
a sked. Thanks in advance Alex (JACK) KC7MG My email is ingejack@???.???
------------------------------
Message: 4
Date: Fri, 05 Oct 2018 18:39:46 -0400
From: "Mark L. Hammond" <marklhammond@?????.???>
To: Hasan al-Basri <hbasri.schiers6@?????.???>,amsat-bb@?????.???
Subject: Re: [amsat-bb] AO-91/92/85 DUV Decode Sovled
Message-ID: <jyfm1y0084okgLP01yfmW9@?????.???>
Content-Type: text/plain; charset="us-ascii"
Great discovery, Hasan. Nice work. That is much better copy than I would
expect from that antenna system.
73,
Mark N8MH
At 11:11 AM 10/5/2018 -0500, Hasan al-Basri wrote:
>Thanks to all of you and the last magic bullet from Terry, ZL2BAC.
>
>Setup:
>2m EggBeater at 7', 80' 9913 coax
>AirSpy HF+, SDR-Console V3.03
>FoxTelem 1.06r patched
>VBAudio from SDRC > Decoder
>
>Checked L/R audio, not an issue for me, as I was getting audio in both
>channels. I unchecked Left Audio, to be safe. (FoxTelem)
>
>Symptom: Could not decode DUV telemetry, did not see Eye fully open, always
>smeared, and no squared off peaks in the freq display of FoxTelem.
>
>Solution
>1. Not only is there a high pass filter in the Narrow FM setting of SDRC
>V3, but *there is a second HiPass* in :
>
>Receive > Options > Equalizer ...in the bottom right hand corner, two
>check boxes, Equalizer and 25 Hz filter. They were checked since install, I
>had never looked at the Equalizer in all these months of use.
>
>Summary Settings That Work:
>
>SDRC: NFM, 12 kHz
>Audio Output Slider 60%
>CABLE Input (VB-Audio Virtual Cable)
>Narrow FM: Highpas OFF
>Receive > Options > Equalizer OFF, HPF OFF
>
>FoxTelem Settings: (Aside from my location/call/etc)
>
>Input Screen:
>DUV (not Auto)
>Input: CABLE Output (VB-Audio Virtual Cable)
>View Filtered Audio
>Raised Cosine
>Cutoff Freq: 200 Hz
>Filter Length: 512
>
>Settings Screen:
>All Defaults, except:
>
>FoxTelem Calculates Position
>Auto Start Decoder when above horizon
>
>Decoder Options:
>Upload to Server
>Track Doppler (probably not needed as SDRC is doing this and I'm not using
>FunCube)
>Store Payloads
>Fix Dropped Bits
>use Long PRM
>
>Debug Options:
>Use Native File Chooser
>=================================
>
>My one remaining question:
>
>At the finish of this 15 deg pass, I got 53 Frames, 57 Payloads, and
>Queued: 53
>
>When does the queued data get uploaded? It's been half an hour and nothing
>has happened and I'm not showing up as a ground station.
>
>Signals were far from outstanding, so I wouldn't say it is hard to get TLM
>copied. 15 deg EL on an Eggbeater only 7' off the ground is not a great
>pass. Lots of fades, lots of noise much of the time.
>
>Thanks to all for help. Now I can make a habit og grabbing TLM.
>
>73 N0AN
>
>Hasan
>_______________________________________________
>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, 5 Oct 2018 19:20:16 -0400
From: Burns Fisher <burns@??????.??>
To: Peter Green <peteragreen@??.???>
Cc: AMSAT BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] AO-91/92 Transatlantic
Message-ID:
<CABX7KxVfTpXaNOCrpVaagC=3mc3MHSfSzHv5j=BS-0q6DS46Vw@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Very nice! I have had a QSO from N. Ireland and the Azores and was very
excited. Never yet have a UK contact!
Burns, WB1FJ FN42 (north eastern US)
On Fri, Oct 5, 2018 at 4:26 PM, Peter Green via AMSAT-BB <amsat-bb@?????.???
> wrote:
> Today via AO-91 I had the privilege of working KB2YSI, Don for his first
> transatlantic QSO and W2GIO.
>
> As Don said on twitter it sounded like simplex.
>
> AO-91 and to a lesser degree AO-92 have some great later afternoon passes
> (UK time) for the USA and Canada (east coast) and most of the time there is
> no one on them.
>
> Quite often there are Europeans calling for the ?DX?
>
> So please be a ?DX? station for us, work FM transatlantic we would love to
> hear you.
>
> Best 73
>
> Pete G0ABI
> _______________________________________________
> 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: 6
Date: Fri, 5 Oct 2018 19:29:43 -0400
From: Burns Fisher <burns@??????.??>
To: Peter Green <peteragreen@??.???>
Cc: AMSAT BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] AO-91/92 Transatlantic
Message-ID:
<CABX7KxUWQ-gdN7HAREMLqxPKoGYQy2EynE8=GCMSr_9ys5Ldxw@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
>
> Never yet have a UK contact!
My total apologies and attempting to step out of any possible political
situation: I mean, of course, that I have not talked to England, Scotland,
or Wales. Nor the Republic of Ireland, but that's a different story...
73s,
Burns WB1FJ
------------------------------
Message: 7
Date: Fri, 5 Oct 2018 23:31:51 +0000
From: B J <va6bmj@?????.???>
To: Graham Shirville <graham@?????????.???>
Cc: AMSAT BB <amsat-bb@?????.???>, Burns Fisher <burns@??????.??>
Subject: Re: [amsat-bb] 1957
Message-ID:
<CAP7QzkPhiQpFpAJoHiaa9c3xrDgmvb5OZEiAFPHb8VqaHhVQeQ@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
<snip>
anyway if we are having a weekend of remininiscencesthen how
> about the first Boeing 747 was rolled out of the factory 50 years ago
> last week? https://www.thisdayinaviation.com/tag/n7470/
<snip>
Don't forget as well that this coming Thursday is the 50th anniversary
of the launch of Apollo 7 with Walter Schirra, Donn Eisele, and Walter
Cunningham:
https://www.nasa.gov/mission_pages/apollo/missions/apollo7.html
Over two months later, Apollo 8 orbited the moon.
73s
Bernhard VA6BMJ @ DO33FL
------------------------------
Message: 8
Date: Sat, 6 Oct 2018 00:21:08 +0000 (UTC)
From: GEO Badger <w3ab@?????.???>
To: "amsat-bb@?????.???? <amsat-bb@?????.???>
Subject: Re: [amsat-bb] 1957
Message-ID: <2102541210.35893.1538785268249@????.?????.???>
Content-Type: text/plain; charset=UTF-8
If anyone is a tube fanatic as I am there is a good write up of the Russian
battery tubes used in Sputnik. They were developed for high acceleration and
vibration conditions as well as operating very well at HF freqs.
https://www.radiomuseum.org/forum/summary_russian_rod_pentodes.html
https://www.radiomuseum.org/forum/russian_subminiature_tubes.html?thread_id=20
0277
?---?
Ciao baby, catch you on the flip side. ??
GEO ???
http://www.w3ab.org
Time flies like an arrow, fruit flies like a banana.
From: Julian Horn <m0nux@??????????.??.??>
To: Burns Fisher <burns@??????.??>
Cc: AMSAT BB <amsat-bb@?????.???>
Sent: Friday, October 5, 2018 7:49 AM
Subject: Re: [amsat-bb] 1957
So, a quick and dirty translation of the PDF using Google Translate - sorry
I dont have time to do the job properly at the minute!
73, Julian M0NUX
The transmitter of the first satellite, Boris STEPANOV (RU3AX), Moscow
? ? ? The launch by the Soviet Union of the first in the history of mankind,
the artificial satellite of the Earth on October 4, 1957, was undoubtedly a
world sensation. Newspapers and magazines, radio and television in all
countries of the world reported this event as the main news of those days.
After all, the apparatus created by man for the first time went beyond the
Earth, opening a new era ?
outer space. Actually, no one did
secrets from the fact that soon it will happen. From July 1, 1957 to
December 31, 1958, the International Geophysical Year was to be held. The
United States of America and the Soviet Union announced in advance that it
would launch launches of artificial earth satellites. But at that time, for
most people on our planet, it all sounded a bit abstract, and the media did
not pay much attention to the upcoming launches.
Meanwhile, intensive training was under way in both countries. Many
technical and organizational issues were tackled, among which not in the
last place is reliable and, most importantly, even the non-expert
understandable registration of the satellite's orbit. This was a significant
factor in the competition between the two powers. Signal reception
The satellite ?from space? onboard the satellite transmitter ? what else
could be more convincing for the general public around the world.
At the end of 1956, we made a decision to involve radio amateurs in
observing the signals of the first satellite to register its entry into
orbit and further flight. A subtle hint of this sounded already in the
January 1957 issue of Radio magazine: "It would be good to mobilize radio
amateurs to receive radio signals that will be sent by satellites ...". And
starting from the June issue, we went to publications on possible orbits of
satellites, on observing their signals (with a lot of necessary technical
details), a description of practical designs for conducting and the
technology of these observations. The July issue also published the official
appeal of the USSR Academy of Sciences to radio amateurs. And then there was
a pause - the expectation of the actual launch of the first satellite.
Naturally, professionals also monitored its launch into orbit, but radio
amateurs were among those who were the first to report to Moscow about
receiving satellite signals and, therefore, about its successful entry into
near-earth orbit.
It goes without saying that radio amateurs were not only interested in
technical characteristics of transmitters installed on the first satellite,
but also some details about what they are. However, then this information,
like many other things related to space, was secret. Interest in the onboard
equipment design of the first AES arose again when the 50th anniversary of
its launch was approaching. Descriptions of amateur radio designs of
transmitters on Soviet rod lamps even appeared on the Internet, but now it
can be said with certainty that they had practically nothing in common with
the transmitter of the first satellite: ...
The radio equipment of the first AES was developed at the enterprise, which
today is called Russian Space Systems (formerly NII-885), one of the
founders of the Russian rocket and space industry, created in 1946. The
article ?The Main Designer? by G. Chliyants and the author of this
publication, published in the February 2011 issue of the magazine ?Radio?,
described the main designer of this research institute, Mikhail Sergeevich
Ryazansky, under whose guidance many radio engineering systems for Mi-cal
industry.
? ? ? ? ? ? Last year, the Russian Space Systems OJSC released a reprint of
a report on the development of an onboard radio station of the first Soviet
artificial satellite of the Earth, which is shown on the cover of this issue
of the magazine. It contains materials on the design and ground testing of
satellite radio equipment. The original report was compiled in 1958.
A noticeable part of it is devoted to the question of choosing the optimal
frequencies for the onboard transmitters of the satellite and their power
based on the data on the Earth's ionosphere at that time. It is interesting
to note that in the form of a popular science article these materials were
published in the magazine "Radio" back in the July 1957 issue!
Without going into details, we note that from the results of this analysis
it followed - with the most adverse assumptions, the frequency of the
transmitter on board should not be lower than 15 MHz. At that time, the
long-range direction finding in the HF in the country worked at frequencies
up to 20 MHz, so this was chosen for the main transmitter. A higher
frequency would be better, but then the available means of direction finding
up to 60 MHz did not provide the necessary accuracy, so a frequency of 40
MHz was chosen for the second transmitter.
Calculations showed that the transmitter signals with an output power of 1 W
can be confidently received on Earth by receivers with a sensitivity of 5
?V. The scheme of the main transmitter ka at a frequency of 20 MHz is shown
in Fig. 1. It was assembled on three 2P19B rod radio tubes. The second
transmitter at a frequency of 40 MHz differs only in the nominal
frequency-determining elements and the matching circuit of the output stage
with the antenna. The frequency of the master oscillator performed on the
VL1 lamp according to the so-called ?Pierce circuit? (the ?anode? function
is performed by the screen grid ), stabilized by a quartz resonator ZQ1. In
both transmitters, the operating frequency of the quartz oscillator was
several kilohertz above 20 MHz. The circuit in the anode circuit of the VL1
is tuned to 20 MHz (in the second transmitter, to 40 MHz). Capacitor C8
symmetrizes this circuit (compensates for the output capacitance of the lamp
of the master oscillator), because th
e output stage of the transmitter is push-pull. It is assembled on lamps
VL2 and VL3 and in general has no features. Note that the filament circuits
of all three lamps are connected in series. Such a solution, if any lamp
failed, would eliminate the energy consumption of this transmitter and
extend the service life of the other. Resistors R4 and R5 are used to
equalize the voltage of the filament on the lamps. There is no pinned data
of induction coils and chokes in the report (this is a report, not a design
documentation!). There is also no data on a trimmer and a dual variable
capacitor, which is set up in the output stage. Constant capacitors, the
ratings of which are not shown in Fig. 1, - tubular KPKS-1 through passage.
The power supply of the onboard radio equipment of the first satellite was
completely autonomous - from silver-zinc batteries. The filament battery
consisted of five elements SCD-70 with a capacity of 140 Ah and provided a
voltage of 7.5 V. The anode battery con
sisted of 86 cells SPD-18 with a capacity of 30 Ah and provided a voltage
of 130 V to supply anode batteries. transmitter chains. It had taps for
powering the screen (90 V) and pentode grids of the output stages (10 V), as
well as the manipulator (20 V). The mass of these batteries was about 50 kg,
i.e. it was a significant part of the mass of the entire satellite. The
batteries were supposed to provide uninterrupted transmitters for 14 days.
Power supplies are not connected to the transmitter housings, which excludes
failure due to accidental short circuits. Since the battery voltage is
higher than the voltage required to supply three lamps, there was a limiting
resistor in its minus circuit (outside the transmitter body). Transmitters
were manipulated by a device on polarized relays by alternately supplying 90
V to screen grids of output cascades. The four antenna beams, which are all
visible in the photographs of the first satellite, are the two beams of the
main transmitter and
two second ones. Figure 2 shows a photograph of a container with
transmitters and a manipulator (it occupies about a fourth of the
container!), And in fig. 3 - the node of one of the transmitters, extracted
from the container. The title page of the report, on which the names of the
main performers of the project are given: M.I. Borisenko, K.I. Greengauz,
V.I. Lappo, A.I. Zinkovsky and the approving signature of M. S. Ryazansky
himself gave us one more surprise. In the 90s, he collaborated with us,
constantly visited the editorial office and published several materials
Abram Isakovich Zinkovsky. We knew him as a competent radio engineer and
accurate author. We knew that before the war I was addicted to short waves
and had the call sign U3DH, that before retirement I worked in a serious
research institute and was somehow connected with space topics. And what was
our surprise when we saw his name on the front page of the report . It turns
out that he was not just ?somehow connected?, b
ut was one of the main performers in creating onboard radio equipment of
the first satellite ? he was responsible for debugging it, design tests and
delivery to the customer. The lead developer of the radio station and the
ground-based device the first satellite was the head of the laboratory,
Vyacheslav Ivanovich Lappo. Theoretical and practical studies of the
propagation of radio waves in the range in which the transmitter worked were
conducted by the head of another laboratory, Konstantin I. Gringauz. And the
project was headed by Mikhail Ivanovich Borisenko. 2 Fig. 3 RADIO No 4, 2013
"RADIO" - ABOUT THE COMMUNICATION
> On 5 Oct 2018, at 14:39, Burns Fisher <burns@??????.??> wrote:
>
> I don't speak or read Russian, but if this is about Sputnik-1, it is clear
> that the Tx has 3 tubes, answering one question!
>
> On Fri, Oct 5, 2018 at 9:00 AM, Hans BX2ABT <hans.bx2abt@???.?????.???>
> wrote:
>
>> A quick search yielded this....
>>
>> ftp://ftp.radio.ru/pub/2013/04/55.pdf
>>
>> Any Russian speakers here?
>>
>>
>>
>> On 10/5/18 8:45 PM, Burns Fisher wrote:
>>
>>> Lots of interesting stuff in the wikipedia article:
>>> https://en.wikipedia.org/wiki/Sputnik_1#Design but it does not say what
>>> the
>>> active device was.? A 1 watt transmitter in 1957?? Must have been tubes,
>>> no?
>>>
>>> An interesting thing I did not know:? It was filled with nitrogen and used
>>> a fan to cool off the electronics!
>>>
>>> On Thu, Oct 4, 2018 at 10:34 PM, JR3MHP <jr3mhp@????.???> wrote:
>>>
>>> Awesome!! Thank you, Bruce!!
>>>>
>>>>
>>>> What kind of devices did they use for transmitting this signal? I wonder
>>>> transistors were good enough for this frequency, but....? vacuum tubes??
>>>>
>>>>
>>>> Best 73,
>>>> Hiro (JR3MHP)
>>>> _______________________________________________
>>>> 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
>>>>
>>>> _______________________________________________
>>> 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
>>>
>>>
>>>
>>> _______________________________________________
>> 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
>>
> _______________________________________________
> 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
_______________________________________________
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: 9
Date: Fri, 05 Oct 2018 17:21:24 -0700
From: Richard Tejera <Saguaroastro@???.???>
To: wa7dxz <wa7dxz@???.???>, 'AMSAT' <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Sputnik
Message-ID: <ealmft2oe4cmvj1uy2kuposh.1538785284342@?????.???????.???>
Content-Type: text/plain; charset=utf-8
According to Wikipedia:
Last contact26 October 1957[4]Decay date4 January 1958
Rick Tejera K7TEJ
Saguaro Astronomy Club
www.SaguaroAstro.org
Thunderbird Amateur Radio Club
www.w7tbc.org
On October 4, 2018, at 22:23, wa7dxz via AMSAT-BB <amsat-bb@?????.???> wrote:
How long was Sputnik in orbit, and for how long was the signal on the
air?Bobwa7dxz
Sent from my Verizon, Samsung Galaxy smartphone
_______________________________________________
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
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Message: 10
Date: Fri, 5 Oct 2018 21:09:10 -0400 (EDT)
From: Ed K9EK <e.krome@???????.???>
To: GEO Badger <w3ab@?????.???>, GEO Badger via AMSAT-BB
<amsat-bb@?????.???>
Subject: [amsat-bb] Was: 1957; now Voyager
Message-ID: <1906098783.134291.1538788151332@???????.???????.???>
Content-Type: text/plain; charset=UTF-8
That rod pentode thing is simply amazing! What great info! Thanks so much.
But that brings up another, related question: Anyone know what kind of
transmitter was used in the Voyager spacecraft? And still working, 40+ years
later.
Thanks!
Ed K9EK
> On October 5, 2018 at 8:21 PM GEO Badger via AMSAT-BB <amsat-bb@?????.???>
wrote:
>
>
> If anyone is a tube fanatic as I am there is a good write up of the
Russian battery tubes used in Sputnik. They were developed for high
acceleration and vibration conditions as well as operating very well at HF
freqs.
> https://www.radiomuseum.org/forum/summary_russian_rod_pentodes.html
>
>
>
https://www.radiomuseum.org/forum/russian_subminiature_tubes.html?thread_id=20
0277
> ?---?
> Ciao baby, catch you on the flip side. ??
> GEO ???
>
> http://www.w3ab.org
>
> Time flies like an arrow, fruit flies like a banana.
>
> From: Julian Horn <m0nux@??????????.??.??>
> To: Burns Fisher <burns@??????.??>
> Cc: AMSAT BB <amsat-bb@?????.???>
> Sent: Friday, October 5, 2018 7:49 AM
> Subject: Re: [amsat-bb] 1957
>
> So, a quick and dirty translation of the PDF using Google Translate -
sorry I dont have time to do the job properly at the minute!
> 73, Julian M0NUX
>
> The transmitter of the first satellite, Boris STEPANOV (RU3AX), Moscow
> ? ? ? The launch by the Soviet Union of the first in the history of
mankind, the artificial satellite of the Earth on October 4, 1957, was
undoubtedly a world sensation. Newspapers and magazines, radio and
television in all countries of the world reported this event as the main
news of those days. After all, the apparatus created by man for the first
time went beyond the Earth, opening a new era ?
> outer space. Actually, no one did
> secrets from the fact that soon it will happen. From July 1, 1957 to
December 31, 1958, the International Geophysical Year was to be held. The
United States of America and the Soviet Union announced in advance that it
would launch launches of artificial earth satellites. But at that time, for
most people on our planet, it all sounded a bit abstract, and the media did
not pay much attention to the upcoming launches.
> Meanwhile, intensive training was under way in both countries. Many
technical and organizational issues were tackled, among which not in the
last place is reliable and, most importantly, even the non-expert
understandable registration of the satellite's orbit. This was a significant
factor in the competition between the two powers. Signal reception
> The satellite ?from space? onboard the satellite transmitter ? what else
could be more convincing for the general public around the world.
> At the end of 1956, we made a decision to involve radio amateurs in
observing the signals of the first satellite to register its entry into
orbit and further flight. A subtle hint of this sounded already in the
January 1957 issue of Radio magazine: "It would be good to mobilize radio
amateurs to receive radio signals that will be sent by satellites ...". And
starting from the June issue, we went to publications on possible orbits of
satellites, on observing their signals (with a lot of necessary technical
details), a description of practical designs for conducting and the
technology of these observations. The July issue also published the official
appeal of the USSR Academy of Sciences to radio amateurs. And then there was
a pause - the expectation of the actual launch of the first satellite.
> Naturally, professionals also monitored its launch into orbit, but radio
amateurs were among those who were the first to report to Moscow about
receiving satellite signals and, therefore, about its successful entry into
near-earth orbit.
> It goes without saying that radio amateurs were not only interested in
> technical characteristics of transmitters installed on the first
satellite, but also some details about what they are. However, then this
information, like many other things related to space, was secret. Interest
in the onboard equipment design of the first AES arose again when the 50th
anniversary of its launch was approaching. Descriptions of amateur radio
designs of transmitters on Soviet rod lamps even appeared on the Internet,
but now it can be said with certainty that they had practically nothing in
common with the transmitter of the first satellite: ...
> The radio equipment of the first AES was developed at the enterprise,
which today is called Russian Space Systems (formerly NII-885), one of the
founders of the Russian rocket and space industry, created in 1946. The
article ?The Main Designer? by G. Chliyants and the author of this
publication, published in the February 2011 issue of the magazine ?Radio?,
described the main designer of this research institute, Mikhail Sergeevich
Ryazansky, under whose guidance many radio engineering systems for Mi-cal
industry.
> ? ? ? ? ? ? Last year, the Russian Space Systems OJSC released a reprint
of a report on the development of an onboard radio station of the first
Soviet artificial satellite of the Earth, which is shown on the cover of
this issue of the magazine. It contains materials on the design and ground
testing of satellite radio equipment. The original report was compiled in
1958.
> A noticeable part of it is devoted to the question of choosing the optimal
frequencies for the onboard transmitters of the satellite and their power
based on the data on the Earth's ionosphere at that time. It is interesting
to note that in the form of a popular science article these materials were
published in the magazine "Radio" back in the July 1957 issue!
> Without going into details, we note that from the results of this analysis
it followed - with the most adverse assumptions, the frequency of the
transmitter on board should not be lower than 15 MHz. At that time, the
long-range direction finding in the HF in the country worked at frequencies
up to 20 MHz, so this was chosen for the main transmitter. A higher
frequency would be better, but then the available means of direction finding
up to 60 MHz did not provide the necessary accuracy, so a frequency of 40
MHz was chosen for the second transmitter.
> Calculations showed that the transmitter signals with an output power of 1
W can be confidently received on Earth by receivers with a sensitivity of 5
?V. The scheme of the main transmitter ka at a frequency of 20 MHz is shown
in Fig. 1. It was assembled on three 2P19B rod radio tubes. The second
transmitter at a frequency of 40 MHz differs only in the nominal
frequency-determining elements and the matching circuit of the output stage
with the antenna. The frequency of the master oscillator performed on the
VL1 lamp according to the so-called ?Pierce circuit? (the ?anode? function
is performed by the screen grid ), stabilized by a quartz resonator ZQ1. In
both transmitters, the operating frequency of the quartz oscillator was
several kilohertz above 20 MHz. The circuit in the anode circuit of the VL1
is tuned to 20 MHz (in the second transmitter, to 40 MHz). Capacitor C8
symmetrizes this circuit (compensates for the output capacitance of the lamp
of the master oscillator), because
the output stage of the transmitter is push-pull. It is assembled on lamps
VL2 and VL3 and in general has no features. Note that the filament circuits
of all three lamps are connected in series. Such a solution, if any lamp
failed, would eliminate the energy consumption of this transmitter and
extend the service life of the other. Resistors R4 and R5 are used to
equalize the voltage of the filament on the lamps. There is no pinned data
of induction coils and chokes in the report (this is a report, not a design
documentation!). There is also no data on a trimmer and a dual variable
capacitor, which is set up in the output stage. Constant capacitors, the
ratings of which are not shown in Fig. 1, - tubular KPKS-1 through passage.
The power supply of the onboard radio equipment of the first satellite was
completely autonomous - from silver-zinc batteries. The filament battery
consisted of five elements SCD-70 with a capacity of 140 Ah and provided a
voltage of 7.5 V. The anode battery c
onsisted of 86 cells SPD-18 with a capacity of 30 Ah and provided a voltage
of 130 V to supply anode batteries. transmitter chains. It had taps for
powering the screen (90 V) and pentode grids of the output stages (10 V), as
well as the manipulator (20 V). The mass of these batteries was about 50 kg,
i.e. it was a significant part of the mass of the entire satellite. The
batteries were supposed to provide uninterrupted transmitters for 14 days.
Power supplies are not connected to the transmitter housings, which excludes
failure due to accidental short circuits. Since the battery voltage is
higher than the voltage required to supply three lamps, there was a limiting
resistor in its minus circuit (outside the transmitter body). Transmitters
were manipulated by a device on polarized relays by alternately supplying 90
V to screen grids of output cascades. The four antenna beams, which are all
visible in the photographs of the first satellite, are the two beams of the
main transmitter an
d two second ones. Figure 2 shows a photograph of a container with
transmitters and a manipulator (it occupies about a fourth of the
container!), And in fig. 3 - the node of one of the transmitters, extracted
from the container. The title page of the report, on which the names of the
main performers of the project are given: M.I. Borisenko, K.I. Greengauz,
V.I. Lappo, A.I. Zinkovsky and the approving signature of M. S. Ryazansky
himself gave us one more surprise. In the 90s, he collaborated with us,
constantly visited the editorial office and published several materials
Abram Isakovich Zinkovsky. We knew him as a competent radio engineer and
accurate author. We knew that before the war I was addicted to short waves
and had the call sign U3DH, that before retirement I worked in a serious
research institute and was somehow connected with space topics. And what was
our surprise when we saw his name on the front page of the report . It turns
out that he was not just ?somehow connected?,
but was one of the main performers in creating onboard radio equipment of
the first satellite ? he was responsible for debugging it, design tests and
delivery to the customer. The lead developer of the radio station and the
ground-based device the first satellite was the head of the laboratory,
Vyacheslav Ivanovich Lappo. Theoretical and practical studies of the
propagation of radio waves in the range in which the transmitter worked were
conducted by the head of another laboratory, Konstantin I. Gringauz. And the
project was headed by Mikhail Ivanovich Borisenko. 2 Fig. 3 RADIO No 4, 2013
"RADIO" - ABOUT THE COMMUNICATION
>
> > On 5 Oct 2018, at 14:39, Burns Fisher <burns@??????.??> wrote:
> >
> > I don't speak or read Russian, but if this is about Sputnik-1, it is clear
> > that the Tx has 3 tubes, answering one question!
> >
> > On Fri, Oct 5, 2018 at 9:00 AM, Hans BX2ABT <hans.bx2abt@???.?????.???>
> > wrote:
> >
> >> A quick search yielded this....
> >>
> >> ftp://ftp.radio.ru/pub/2013/04/55.pdf
> >>
> >> Any Russian speakers here?
> >>
> >>
> >>
> >> On 10/5/18 8:45 PM, Burns Fisher wrote:
> >>
> >>> Lots of interesting stuff in the wikipedia article:
> >>> https://en.wikipedia.org/wiki/Sputnik_1#Design but it does not say what
> >>> the
> >>> active device was.? A 1 watt transmitter in 1957?? Must have been tubes,
> >>> no?
> >>>
> >>> An interesting thing I did not know:? It was filled with nitrogen and
used
> >>> a fan to cool off the electronics!
> >>>
> >>> On Thu, Oct 4, 2018 at 10:34 PM, JR3MHP <jr3mhp@????.???> wrote:
> >>>
> >>> Awesome!! Thank you, Bruce!!
> >>>>
> >>>>
> >>>> What kind of devices did they use for transmitting this signal? I
wonder
> >>>> transistors were good enough for this frequency, but....? vacuum
tubes??
> >>>>
> >>>>
> >>>> Best 73,
> >>>> Hiro (JR3MHP)
> >>>> _______________________________________________
> >>>> 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.
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> >>>>
> >>>> _______________________________________________
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> >>> to all interested persons worldwide without requiring membership.
> >>> Opinions expressed
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> >>>
> >>>
> >>> _______________________________________________
> >> Sent via AMSAT-BB@?????.???. AMSAT-NA makes this open forum available
> >> to all interested persons worldwide without requiring membership.
Opinions
> >> expressed
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> >>
> > _______________________________________________
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Opinions expressed
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AMSAT-NA.
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> _______________________________________________
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>
>
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