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CX2SA > SATDIG 15.10.15 09:40l 834 Lines 31452 Bytes #999 (0) @ WW
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To : SATDIG@WW
Today's Topics:
1. Foxtelem and FT-736R (Tom Worthington)
2. Re: Eimac Moonbounce - I8CVS (Thomas Doyle)
3. Symposium Registration (R.T.Liddy)
4. Re: Symposium Registration (Paul Stoetzer)
5. Re: Foxtelem and FT-736R (kb2m@xxxx.xxxx
6. Re: Foxtelem and FT-736R (Tom Worthington)
7. Re: Foxtelem and FT-736R (Tony Langdon)
8. Re: Foxtelem and FT-736R (Chris Thompson)
9. Jamboree on the Air this weekend. (Tom Schuessler)
10. A tip for Gqrx users and report of the copy of FIREBIRD-II
FU3/4 19k2 FSK. (M.Sc. Pavel Milanes Costa)
11. Re: A tip for Gqrx users and report of the copy of
FIREBIRD-II FU3/4 19k2 FSK. (M.Sc. Pavel Milanes Costa)
12. WD9EWK - Wednesday evening in Indiana, working AO-85...
(Patrick STODDARD (WD9EWK/VA7EWK))
13. Re: A tip for Gqrx users and report of the copy of
FIREBIRD-II FU3/4 19k2 FSK. (Koos van den Hout)
----------------------------------------------------------------------
Message: 1
Date: Wed, 14 Oct 2015 08:01:31 -1000
From: Tom Worthington <worth@xxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Foxtelem and FT-736R
Message-ID: <561E987B.2070403@xxxx.xxx>
Content-Type: text/plain; charset=utf-8; format=flowed
I've tried unsuccessfully to decode using the 9600 b output of my FT-857
into a sound card.
The manual for Foxtelem refers to pulling the discriminator signal out
of the Yaesu FT-736R for decoding.
However, it does not suggest a point on the circuit.
I'm thinking to try between Q20 and Q21 on the RX unit. perhaps a 0.1
uf cap to the collector of Q20?
Has anybody else tried this?
Thanks, Tom, NH6Y
------------------------------
Message: 2
Date: Wed, 14 Oct 2015 16:04:01 -0400
From: Thomas Doyle <tomdoyle1948@xxxxx.xxx>
To: "M.Sc. Pavel Milanes Costa" <co7wt@xxxxxx.xx.xx>
Cc: AMSAT <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] Eimac Moonbounce - I8CVS
Message-ID:
<CAHnRQRLyAqZn6OFUaQ-SLrbyuNojt44K4wGJWT8-txmwsWXc2g@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
"Only if the info is alive and moving it will prevail and never die, CD/DVD
are good for a year or two, but no more..."
Another more realistic way of looking at is "Anything that moves will break
- the only unknown is exactly when it will break". Interesting things
happen to hard drives when subjected to intense shock from unexpected
things like earthquakes and nearby explosions.
Buy quality disks, use good quality burners and take some care where you
will store them and you will have much better luck. No one says the
CD/DVD's will "never die" but they will last a lot longer than a couple of
years.
This CLIR study has lots of information on the subject.
http://www.clir.org/pubs/reports/pub121/sec4.html
Here are some suggestions on how you might get better life from your
CD/DVR's.
http://www.recovery-portal.com/shelf-life-of-recordable-cd-dvd-media/
I have many recordable disks that are over 10 years old and they are error
free.
The only truly proven portable long term storage media is papyrus,
parchment and bronze.
https://en.wikipedia.org/wiki/Dead_Sea_Scrolls
Most data on other things comes from accelerated aging studies which are
little better than a shot in the dark.
73 W9KE Tom Doyle
On Mon, Oct 12, 2015 at 7:24 PM, M.Sc. Pavel Milanes Costa <
co7wt@xxxxxx.xx.xx> wrote:
> A flash back from a 3rd country....
>
> El 12/10/15 a las 02:50, Phil Karn escribi?:
>
>> Years ago I came to the conclusion that the best way to preseve digital
>> information is to "keep it spinning"
>>
>
> That's what my team calls a "live repository of information", we in Cuba
> with almost ZERO network available have managed to create a live
> repository... the live example of "Keep it spinning"
>
> A few technical oriented group of people - hamradio operators or not -
> have a huge doc repository (tech papers, articles, blueprints,
> operating/technical manuals/schematics of any type, handbooks, etc) that
> get mirrored as flash drives and huge USB portable HDDs. When some one have
> a new bunch of GBs of good info it notifies the group and the propagation
> of the info begins... every member has it's subject of interest, but we
> have manage to get at least 2 copies of the same info...
>
> Copyrights is not an issue here at least for the moment.
>
> A few times in the year I get request from one or more people of the group
> to meet and recover a few Gb of info about X subject after it's HDD
> collapse, even I had used this trick a few months ago with the loss of my
> 1TB Portable drive to recover the ~25 Gb ham/commercial radio
> manual/schematics folder organized by manufacturer and even the
> CAT/Programming soft for almost all...
>
> Only if the info is alive and moving it will prevail and never die, CD/DVD
> are good for a year or two, but no more...
>
> That's my live example of the "Keep it spinning" of Phil
>
> 73 from Cuba, CO7WT.
>
>
>
> _______________________________________________
> 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 from my computer.
tom ...
------------------------------
Message: 3
Date: Wed, 14 Oct 2015 21:08:30 +0000 (UTC)
From: "R.T.Liddy" <k8bl@xxxxxxxxx.xxx>
To: AMSAT BB <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Symposium Registration
Message-ID:
<312915659.455283.1444856910684.JavaMail.yahoo@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
I'll be attending my first Symposium this weekend in Dayton.
I ordered my Registration on 9/30 on-line. Is there somethingsupposed to be
delivered to my home address? Nothing hasshown up after 2 weeks. Or, am I
supposed to pick it up whenI arrive at the Symposium?
TNX/73, ? ? ? Bob - K8BL
------------------------------
Message: 4
Date: Wed, 14 Oct 2015 17:12:48 -0400
From: Paul Stoetzer <n8hm@xxxx.xxx>
To: "R.T.Liddy" <k8bl@xxxxxxxxx.xxx>
Cc: AMSAT BB <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] Symposium Registration
Message-ID:
<CABzOSOr2cFq6ShE7OAFJb01F3Aac7DQSAPYoY8BUGta27pxmUg@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
Bob,
There will be a registration table here in Dayton where you'll pick up
your badge, copy of the Proceedings, etc.
73,
Paul, N8HM
On Wed, Oct 14, 2015 at 5:08 PM, R.T.Liddy <k8bl@xxxxxxxxx.xxx> wrote:
> I'll be attending my first Symposium this weekend in Dayton.
> I ordered my Registration on 9/30 on-line. Is there somethingsupposed to
be delivered to my home address? Nothing hasshown up after 2 weeks. Or, am I
supposed to pick it up whenI arrive at the Symposium?
> TNX/73, Bob - K8BL
> _______________________________________________
> 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: 5
Date: Wed, 14 Oct 2015 18:04:01 -0400
From: <kb2m@xxxx.xxx>
To: "'Tom Worthington'" <worth@xxxx.xxx>, <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] Foxtelem and FT-736R
Message-ID: <027401d106cc$40afe7a0$c20fb6e0$@xxx>
Content-Type: text/plain; charset="us-ascii"
Tom, you're really testing my memory, but I just can't remember the mod
exactly. I did this mod 15 years ago to a 736 I owned at the time. All I can
say is it does work at 9k6 when done. I'm sure the mod is out there
somewhere.
BWTM
I did find this and I'm 100% sure it's what I did. What a great blast from
the past. Good luck...
---------------------------
by James Miller G3RUH
These notes tell you where to get FM RX audio direct from the
discriminator, and where to modulate the FM TX varactor directly.
These mods are non-destructive and take no more than a few
minutes. The signals bypass the "DATA SOCKET" for high grade FM
operations.
The RX mod is suitable for:
* UOSAT-D 9600 baud downlink and terrestrial links
* 1200 baud AFSK/FM Standard Packet - BUT IT'S UNSQUELCHED.
The TX mod is suitable for:
* FO-20/PACSAT uplink (1200 bps Manchester FM)
* UOSAT-D 9600 baud uplink direct FSK and terrestrial links
* 1200 baud AFSK/FM Standard Packet.
---****---
FT736 - FM Direct from Discriminator
-------------------------------------
Detected FM direct from the receiver discriminator is available
from the RX UNIT at the junction of R91 and C83. These
components are shown in the top right-hand corner of the
schematic.
Proceed thus:
1. Disconnect FT736 from the mains electricity. (Safety).
2. Remove top cover only.
3. RX Unit is the vertical module on the left.
4. Locate R91 which is about 25mm from the top, 50mm from the
radio rear.
the resistor is "on-end", and near a couple of glass diodes.
5. Scrape any paint off R91's free end and wet with solder.
6. Your RXaudio lead should be a fine screened cable; connect
the inner to R91, and the outer braid to a ground point (e.g.
can of TO09)
7. Route the cable out though any convenient aperture in the case.
8. The discriminator sensitivity (FM Normal) as about 6 kHz/volt.
The link....
ftp://ftp.tapr.org/general/9600baud/96man2x0.txt
73 Jeff kb2m
-----Original Message-----
From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of Tom
Worthington
Sent: Wednesday, October 14, 2015 14:02 PM
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Foxtelem and FT-736R
The manual for Foxtelem refers to pulling the discriminator signal out of
the Yaesu FT-736R for decoding.
However, it does not suggest a point on the circuit.
I'm thinking to try between Q20 and Q21 on the RX unit. perhaps a 0.1 uf
cap to the collector of Q20?
Has anybody else tried this?
Thanks, Tom, NH6Y
------------------------------
Message: 6
Date: Wed, 14 Oct 2015 14:21:16 -1000
From: Tom Worthington <worth@xxxx.xxx>
To: kb2m@xxxx.xxxx amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] Foxtelem and FT-736R
Message-ID: <561EF17C.5090804@xxxx.xxx>
Content-Type: text/plain; charset=windows-1252; format=flowed
Thanks Jim
73 and Aloha, Tom, NH6Y
On 10/14/2015 12:04 PM, kb2m@xxxx.xxx wrote:
> Tom, you're really testing my memory, but I just can't remember the mod
> exactly. I did this mod 15 years ago to a 736 I owned at the time. All I can
> say is it does work at 9k6 when done. I'm sure the mod is out there
> somewhere.
>
> BWTM
>
> I did find this and I'm 100% sure it's what I did. What a great blast from
> the past. Good luck...
>
> ---------------------------
> by James Miller G3RUH
>
> These notes tell you where to get FM RX audio direct from the
> discriminator, and where to modulate the FM TX varactor directly.
> These mods are non-destructive and take no more than a few
> minutes. The signals bypass the "DATA SOCKET" for high grade FM
> operations.
>
> The RX mod is suitable for:
>
> * UOSAT-D 9600 baud downlink and terrestrial links
> * 1200 baud AFSK/FM Standard Packet - BUT IT'S UNSQUELCHED.
>
> The TX mod is suitable for:
>
> * FO-20/PACSAT uplink (1200 bps Manchester FM)
> * UOSAT-D 9600 baud uplink direct FSK and terrestrial links
> * 1200 baud AFSK/FM Standard Packet.
>
> ---****---
>
>
>
> FT736 - FM Direct from Discriminator
> -------------------------------------
> Detected FM direct from the receiver discriminator is available
> from the RX UNIT at the junction of R91 and C83. These
> components are shown in the top right-hand corner of the
> schematic.
>
> Proceed thus:
> 1. Disconnect FT736 from the mains electricity. (Safety).
> 2. Remove top cover only.
> 3. RX Unit is the vertical module on the left.
> 4. Locate R91 which is about 25mm from the top, 50mm from the
> radio rear.
> the resistor is "on-end", and near a couple of glass diodes.
> 5. Scrape any paint off R91's free end and wet with solder.
> 6. Your RXaudio lead should be a fine screened cable; connect
> the inner to R91, and the outer braid to a ground point (e.g.
> can of TO09)
> 7. Route the cable out though any convenient aperture in the case.
> 8. The discriminator sensitivity (FM Normal) as about 6 kHz/volt.
>
> The link....
>
> ftp://ftp.tapr.org/general/9600baud/96man2x0.txt
>
>
> 73 Jeff kb2m
>
>
> -----Original Message-----
> From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of Tom
> Worthington
> Sent: Wednesday, October 14, 2015 14:02 PM
> To: amsat-bb@xxxxx.xxx
> Subject: [amsat-bb] Foxtelem and FT-736R
>
> The manual for Foxtelem refers to pulling the discriminator signal out of
> the Yaesu FT-736R for decoding.
> However, it does not suggest a point on the circuit.
> I'm thinking to try between Q20 and Q21 on the RX unit. perhaps a 0.1 uf
> cap to the collector of Q20?
> Has anybody else tried this?
> Thanks, Tom, NH6Y
>
>
------------------------------
Message: 7
Date: Thu, 15 Oct 2015 11:40:05 +1100
From: Tony Langdon <vk3jed@xxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] Foxtelem and FT-736R
Message-ID: <561EF5E5.2060707@xxxxx.xxx>
Content-Type: text/plain; charset=windows-1252
On 15/10/2015 5:01 AM, Tom Worthington wrote:
> I've tried unsuccessfully to decode using the 9600 b output of my FT-857
> into a sound card.
>
> The manual for Foxtelem refers to pulling the discriminator signal out
> of the Yaesu FT-736R for decoding.
> However, it does not suggest a point on the circuit.
> I'm thinking to try between Q20 and Q21 on the RX unit. perhaps a 0.1
> uf cap to the collector of Q20?
> Has anybody else tried this?
Can't help off the top of my head, but ig you google for D-STAR on
FT-736R, you will find mods that will allow true 9600 operation (D-STAR
has similar requirements).
You'll just need to do the Rx side of the mods for telemetry decoding,
but doing Tx as well will give you more options in the future.
--
73 de Tony VK3JED/VK3IRL
http://vkradio.com
------------------------------
Message: 8
Date: Wed, 14 Oct 2015 21:56:14 -0400
From: Chris Thompson <g0kla@xxxx.xxx>
To: Tony Langdon <vk3jed@xxxxx.xxx>
Cc: "AMSAT-BB@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] Foxtelem and FT-736R
Message-ID:
<CAJOf0+tV9MeyQ5qXNT_uR+G5A=JOMA7H9GO0p8GGtHhcqvwszw@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
Yes, it is the G3RUH mod and there is a least one site that shows you in
pictures where to solder the wire as I remember. I did this about a year
ago when I was first testing the software. I get great decodes from the
FT-736R this way.
Use an old headphones cable with the earbuds cutoff as the wire. Then you
have a plug ready to connect to your soundcard! If you have a choice use
Line In rather than Mic on the computer.
Good luck!
73
Chris
On Wed, Oct 14, 2015 at 8:40 PM, Tony Langdon <vk3jed@xxxxx.xxx> wrote:
> On 15/10/2015 5:01 AM, Tom Worthington wrote:
> > I've tried unsuccessfully to decode using the 9600 b output of my FT-857
> > into a sound card.
> >
> > The manual for Foxtelem refers to pulling the discriminator signal out
> > of the Yaesu FT-736R for decoding.
> > However, it does not suggest a point on the circuit.
> > I'm thinking to try between Q20 and Q21 on the RX unit. perhaps a 0.1
> > uf cap to the collector of Q20?
> > Has anybody else tried this?
>
> Can't help off the top of my head, but ig you google for D-STAR on
> FT-736R, you will find mods that will allow true 9600 operation (D-STAR
> has similar requirements).
>
> You'll just need to do the Rx side of the mods for telemetry decoding,
> but doing Tx as well will give you more options in the future.
>
> --
> 73 de Tony VK3JED/VK3IRL
> http://vkradio.com
> _______________________________________________
> 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
>
--
Chris E. Thompson
chrisethompson@xxxxx.xxx
g0kla@xxxx.xxx
------------------------------
Message: 9
Date: Wed, 14 Oct 2015 21:56:35 -0600
From: "Tom Schuessler" <tjschuessler@xxxxxxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Jamboree on the Air this weekend.
Message-ID: <009601d106fd$7f139f60$7d3ade20$@xxx>
Content-Type: text/plain; charset=US-ASCII
This weekend, besides being the AMSAT Space Symposium, will also see the
annual partnership of Amateur Radio and Scouting for the 58th Jamboree on
the Air. JOTA is the largest single scouting event in the world and sees
participation from affiliated scouting organizations in 165 countries. If
you hear "CQ JOTA" on any satellite passes between the evening of Friday
the 16th and the end of the day Sunday the 18th, make it a point to come
back to them. They will have young people watching and hoping that you do.
I will be again running a large JOTA event at the National Scouting Museum
in Irving, TX, EM12nt, and our site will again be using the call, K2BSA/5.
My satellite opportunities this year will be limited to two SO-50 passes,
1656Z and 1835Z on 17 October. The first pass will be low angle with
obstructions but the second will be high and slightly westerly.
Please listen for me, or any other JOTA stations for that matter, and do
give us a call. It is fun to see the eyes of young Scouts light up when
they realize they have been involved with this type of satellite
communications. These kids are our future.
73
Tom Schuessler
N5HYP
------------------------------
Message: 10
Date: Wed, 14 Oct 2015 23:24:37 -0400
From: "M.Sc. Pavel Milanes Costa" <co7wt@xxxxxx.xx.xx>
To: "AMSAT-BB@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] A tip for Gqrx users and report of the copy of
FIREBIRD-II FU3/4 19k2 FSK.
Message-ID: <561F1C74.8090801@xxxxxx.xx.xx>
Content-Type: text/plain; charset=utf-8; format=flowed
I'm playing this night with my linux box and rtl-dsr + Gqrx + Gpredict
to see the 70cm satellite sub-band...
And found a way to identify the sat from the spectrum at a glance in
70cm using the bookmarks of gqrx... very handy feature of this
software... just linux here, not know if windows sdr soft has this
feature...
After playing with satlist.csv (from
http://www.ne.jp/asahi/hamradio/je9pel/satslist.htm) and parsing it to
make it work with gqrx... I fire the Gqrx software, put up the antenna
and watch for any suspicious signal... and the bookmarks on top of the
signals are there, nice....
... (a few minutes after) ... haja !!!!
A packet like signal around 437.4 Mhz, zoom it.... wow, to wide for
normal packet... let's widen the filter to fit... ~25 Khz is enough,
hum... it's bigger than 9600 bauds... lets see what the bookmarks on the
screenm says... FIREBIRD-II FU4 19k2 FSK within the +/- 10khz of
doppler... bingo !!!
Let's run Gpredict to check.... right on the spot... and also
FIREBIRD-II FU3 incoming on range... let's check... right...
So if you use linux and some SDR hardware with Gqrx, you can use the
bookmark function to this purpose, you can actually click & zoom and
then read of the screen to approximate which is the satellite who tx
that signal... all at a glance...
If any of you want to play with this I can send you my bookmark file of
the entire 70cm satellite sub-band, updated with the last info from
http://www.ne.jp/asahi/hamradio/je9pel/satslist.htm just email me a
private msg.
I was not trying to decode, just to prove the usefulness of this
feature, I use the latest gqrx & gpredict from ubuntu PPA.
BTW, none of the FIREBIRD satellites are in the
http://www.amsat.org/status/ page, so I can't update it's state.
73 from Cuba, CO7WT
------------------------------
Message: 11
Date: Wed, 14 Oct 2015 23:33:35 -0400
From: "M.Sc. Pavel Milanes Costa" <co7wt@xxxxxx.xx.xx>
To: "AMSAT-BB@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] A tip for Gqrx users and report of the copy of
FIREBIRD-II FU3/4 19k2 FSK.
Message-ID: <561F1E8F.6060506@xxxxxx.xx.xx>
Content-Type: text/plain; charset=windows-1252; format=flowed
Just spoted GOMX-3 right now using this method... sat hunting is fun... 73
PS: not in http://www.amsat.org/status/ listing also...
73
El 14/10/15 a las 23:24, M.Sc. Pavel Milanes Costa escribi?:
> I'm playing this night with my linux box and rtl-dsr + Gqrx + Gpredict
> to see the 70cm satellite sub-band...
>
> And found a way to identify the sat from the spectrum at a glance in
> 70cm using the bookmarks of gqrx... very handy feature of this
> software... just linux here, not know if windows sdr soft has this
> feature...
>
> After playing with satlist.csv (from
> http://www.ne.jp/asahi/hamradio/je9pel/satslist.htm) and parsing it to
> make it work with gqrx... I fire the Gqrx software, put up the antenna
> and watch for any suspicious signal... and the bookmarks on top of the
> signals are there, nice....
>
> ... (a few minutes after) ... haja !!!!
>
> A packet like signal around 437.4 Mhz, zoom it.... wow, to wide for
> normal packet... let's widen the filter to fit... ~25 Khz is enough,
> hum... it's bigger than 9600 bauds... lets see what the bookmarks on
> the screenm says... FIREBIRD-II FU4 19k2 FSK within the +/- 10khz of
> doppler... bingo !!!
>
> Let's run Gpredict to check.... right on the spot... and also
> FIREBIRD-II FU3 incoming on range... let's check... right...
>
> So if you use linux and some SDR hardware with Gqrx, you can use the
> bookmark function to this purpose, you can actually click & zoom and
> then read of the screen to approximate which is the satellite who tx
> that signal... all at a glance...
>
> If any of you want to play with this I can send you my bookmark file
> of the entire 70cm satellite sub-band, updated with the last info
> from http://www.ne.jp/asahi/hamradio/je9pel/satslist.htm just email
> me a private msg.
>
> I was not trying to decode, just to prove the usefulness of this
> feature, I use the latest gqrx & gpredict from ubuntu PPA.
>
> BTW, none of the FIREBIRD satellites are in the
> http://www.amsat.org/status/ page, so I can't update it's state.
>
> 73 from Cuba, CO7WT
> _______________________________________________
> 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: 12
Date: Thu, 15 Oct 2015 03:46:28 +0000
From: "Patrick STODDARD (WD9EWK/VA7EWK)" <amsat-bb@xxxxxx.xxx>
To: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] WD9EWK - Wednesday evening in Indiana, working
AO-85...
Message-ID:
<CAN6TEUce2Y4ktRJ=mKUtUXh+FWw0KXuchneH1ba-nrxu0NB=Ng@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
Hi!
After flying from Phoenix to Indianapolis, I drove up to Fort Wayne for the
night. On the 125-mile drive, I made two stops to work AO-85 passes. I have
worked from EN70 and EN71 before, but those past occasions were times I
operated from Ohio. Between a freeway rest area and a parking lot for a
large store, I was able to give out these two grids and have fun on the new
bird.
Between pass predictions I printed at home last night and my AmsatDroid
Free app on my mobile phone, I had a good idea when I could work passes. I
decided to focus on AO-85 tonight, even though I basically have my complete
satellite station with me. I decided I would stop about 25 to 30 minutes
before the first of the two AO-85 passes I worked, so I could disassemble
my suitcase and carry-on bags enough to get my gear ready for the pass. I
assembled an Elk antenna, pulled out everything related to my 8-inch HP
tablet and SDRplay receiver, my IC-2820H 2m/70cm FM mobile radio (that was
an item of interest in the Phoenix airport this morning, especially with
its faceplate packed away from the radio), and accessories like an audio
splitter, diplexer, coax, etc. I had everything ready in time to take some
pictures, and tweet a couple of them before the pass.
I used the same setup that I have used at home a couple of times with this
satellite - Icom IC-2820H 2m/70cm FM mobile transceiver for the uplink,
set to transmit in narrow FM; SDRplay SDR receiver, 8-inch Windows 10
tablet with HDSDR, all connected through a diplexer to my Elk log periodic.
I plug an audio splitter into the tablet's headset jack, and split the
receive audio between earbuds for me and a Sony audio recorder. I know I
could also have HDSDR write an audio recording at the same time it writes
an RF recording, but I don't want to risk overloading the tablet.
When 2305 UTC came, I could hear AO-85 after it was up about 2 to 3 degrees
elevation. It sounds like most stations were using narrow FM on the uplink,
as most signals sounded pretty good this evening. I was able to log QSOs
with 7 stations, including Paul N8HM on top of the parking garage next to
the Crowne Plaza hotel in downtown Dayton, site of this weekend's AMSAT
Symposium. During this pass, I could hear XW-2F passing by - just like I
did on Sunday evening back in Phoenix. I saw stations working the XW-2F
transponder, and also saw XW-2F's CW beacon, as I worked AO-85.
After that pass, I drove north to Fort Wayne. I realized that Fort Wayne is
basically at the EN70/EN71 grid boundary, but did not want to try to find a
good spot for that boundary in the dark. I have only been through Fort
Wayne once before, so I'm not familiar with the area. I kept an eye on my
TH-D72A's GPS location, waiting to see EN71 appear on the screen. Once that
happened, I looked for an exit off I-69, and for something like a truck
stop or large parking lot at a store or shopping center to park. Just north
of the grid boundary, I exited the freeway, and found a parking lot just
west of the freeway.
After setting up my gear on the roof of my car, and waiting for AO-85 to
pop up over the western horizon around 0051 UTC, I had no problems hearing
it. I worked 8 stations during this pass, including someone else heading to
Dayton (Wyatt AC0RA - he was in EN60 for this pass). It was also nice to
hear stations from the western USA, like Larry WA6DIR and Jack KC7MG, from
here in Fort Wayne, plus VE4AMU in Manitoba.
Most stations sounded pretty good on both passes. The later pass was a
little harder for me to hear, not keeping up with the fading as well as I
had been doing on the earlier pass. I think more stations were transmitting
in narrow FM tonight. A couple were not, and one sounded so-so at best -
even after trying to adjust the FM settings in HDSDR in an attempt to clean
up the audio. My portable setup worked well from the rooftop of my rental
car in two different locations, a good sign for upcoming activities later
on in the coming week.
The SDRplay is working very well as my receiver for working satellites,
including AO-85. HDSDR's AFC function works well, except in close proximity
to the XW-2F CW beacon and/or transponder signals (the 2305 UTC pass had
both AO-85 and XW-2F in view at EN70). Being able to fine-tune how narrow I
heard the FM signals, and being able to raise the filtering on the low end
of the received signals to eliminate any noise from the telemetry, makes
this a very powerful way to work these passes. I will try to upload the
telemetry from the RF recordings of both passes this evening.
I have uploaded the audio recordings, along with photos and screengrabs,
from both of these passes to my Dropbox space:
http://dropbox.wd9ewk.net/
Again, press F5 if the file/folder listing doesn't appear immediately. I
hope to be able to upload my RF recordings in a day or two from Dayton,
depending on the Internet access at the Symposium hotel. I won't try to
upload them using my mobile phone's hotspot, as they are too big to do
without exhausting my monthly data allowance in a matter of a couple of
days. I hope to have tonight's QSOs uploaded to Logbook of the World
shortly, for those looking to get confirmations for EN70 and/or EN71.
QSL cards will also be available after the trip; please e-mail me with
the QSO details, and I'll send a card if you're in the log.
Tomorrow will be a busy day, between making a quick stop at the border
tripoint where 3 states come together (Indiana, Michigan, and Ohio) and
driving down to Dayton to attend the AMSAT Symposium. Please follow my
@xxxxxx Twitter feed (https://twitter.com/WD9EWK ) for updates on my
activities, and my car should show up on APRS as WD9EWK-9 (visible at
http://aprs.fi/WD9EWK-9 among other places). Day 1 was fun, and there is
a week to go...
73!
Patrick WD9EWK/VA7EWK - Fort Wayne, Indiana
http://www.wd9ewk.net/
Twitter: @xxxxxx
------------------------------
Message: 13
Date: Thu, 15 Oct 2015 09:21:11 +0200
From: Koos van den Hout <koos@xxxxxx.xxxxxx.xx>
To: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] A tip for Gqrx users and report of the copy of
FIREBIRD-II FU3/4 19k2 FSK.
Message-ID: <20151015072111.GB8151@xxxxxx.xxxxxx.xx>
Content-Type: text/plain; charset=us-ascii
Quoting M.Sc. Pavel Milanes Costa who wrote on Wed 2015-10-14 at 23:24:
> After playing with satlist.csv (from
> http://www.ne.jp/asahi/hamradio/je9pel/satslist.htm) and parsing it
> to make it work with gqrx... I fire the Gqrx software, put up the
> antenna and watch for any suspicious signal... and the bookmarks on
> top of the signals are there, nice....
>
> ... (a few minutes after) ... haja !!!!
>
> A packet like signal around 437.4 Mhz, zoom it.... wow, to wide for
> normal packet... let's widen the filter to fit... ~25 Khz is enough,
> hum... it's bigger than 9600 bauds... lets see what the bookmarks on
> the screenm says... FIREBIRD-II FU4 19k2 FSK within the +/- 10khz of
> doppler... bingo !!!
Oooh.. do you have a screenshot to share?
Koos
--
Koos van den Hout, PGP keyid 0xF0D7C263 via keyservers
koos@xxxxxx.xxxxxx.xx
Weather maps from free sources at
http://idefix.net/ http://weather.idefix.net/
------------------------------
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End of AMSAT-BB Digest, Vol 10, Issue 312
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