| |
CX2SA > SATDIG 12.04.16 14:57l 542 Lines 17595 Bytes #999 (0) @ WW
BID : AMSATBB11116
Read: GUEST
Subj: AMSAT-BB-digest V11 116
Path: IW8PGT<HB9CSR<IK2XDE<DB0RES<DB0EEO<DB0GOS<ON0AR<F1OYP<WA7V<CX2SA
Sent: 160412/1254Z @:CX2SA.SAL.URY.SOAM #:42103 [Salto] FBB7.00e $:AMSATBB11116
From: CX2SA@CX2SA.SAL.URY.SOAM
To : SATDIG@WW
Today's Topics:
1. Channel master rotor (jeffory broughton)
2. Re: Channel master rotor (Pedro Sousa)
3. Tried ISS SSTV but nothing heard (Koos van den Hout)
4. Re: Subject: Re: Link budgets for upcoming HEO/GEO sats
(John Toscano)
5. AO-85 (Jeff)
6. Re: Tried ISS SSTV but nothing heard (skristof@xxxxxxx.xxxx
7. ISS SSTV (Frank Krizan)
8. Re: Subject: Re: Link budgets for upcoming HEO/GEO sats
(Mike Seguin)
9. Ao85 doppler sqf file (jeffory broughton)
10. Modify a tv rotor for sat use (jeffory broughton)
11. Re: ISS SSTV (Bob Cutter)
12. SSTV on ISS (Bob Cutter)
13. Re: Ao85 doppler sqf file (Jeff)
14. Ao85 doppler,sqf (jeffory broughton)
15. Rig in for repair (Richard Lawn)
16. ISS SSTV Active (Nitin Muttin)
----------------------------------------------------------------------
Message: 1
Date: Mon, 11 Apr 2016 14:31:12 -0400
From: jeffory broughton <jefforybroughton@xxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Channel master rotor
Message-ID:
<CACm2je1kwFcLRJeBmrUOGFrq4Oe1WHEhaO_vy5e3AOSUN2bCkg@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
A rotor needs to be able to provide feedback voltage to the controller.
This rotor does not.I did see a modification where a person added a 10 turn
pot in the rotor motor driven off a gear to provide feedback voltage so the
controller knows where the rotor is looking.
jeff broughton WB8RJY
------------------------------
Message: 2
Date: Mon, 11 Apr 2016 18:38:33 +0000
From: Pedro Sousa <pedro@xxxxxxxxxx.xxxx>
To: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] Channel master rotor
Message-ID: <570BEF29.90203@xxxxxxxxxx.xxxx>
Content-Type: text/plain; charset=windows-1252; format=flowed
Any suggestion on a TV rotor good enough to provide a fixed elevation
antenna setup? And that would connect to HRD or SatPC32.
73 Pedro CU2ZG
On 11/04/2016 18:31, jeffory broughton wrote:
> A rotor needs to be able to provide feedback voltage to the controller.
> This rotor does not.I did see a modification where a person added a 10 turn
> pot in the rotor motor driven off a gear to provide feedback voltage so the
> controller knows where the rotor is looking.
>
> jeff broughton WB8RJY
> _______________________________________________
> 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
>
---
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus
--
This message has been scanned for viruses and
dangerous content by MailScanner, and is
believed to be clean.
------------------------------
Message: 3
Date: Mon, 11 Apr 2016 21:59:55 +0200
From: Koos van den Hout <koos@xxxxxx.xxxxxx.xx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Tried ISS SSTV but nothing heard
Message-ID: <20160411195955.GA30957@xxxxxx.xxxxxx.xx>
Content-Type: text/plain; charset=us-ascii
In one of the articles about the current ISS SSTV event was a starting time
of 19:25 UTC, and the pass over my QTH JO22NC started at 19:28 UTC. So I
was out with the whole setup and a strong arm to aim the antenna at the ISS
in the hope of receiving something.
But nothing was received. The fun part is that an ISS pass shortly after
sundown gives a visual aid to aim the antenna at, but no signal received.
Also noticed at http://www.dk3wn.info/p/?p=70934
--
Koos van den Hout PGP keyid 0xF0D7C263 via keyservers
IPv6: Think ::/0, act ::1.
http://idefix.net/ Are you ready to start supporting IPv6?
------------------------------
Message: 4
Date: Mon, 11 Apr 2016 15:39:18 -0500
From: John Toscano <tosca005@xxx.xxx>
To: Bob Freeman <uwaveguy@xxxxx.xxx>
Cc: AMSAT BB <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] Subject: Re: Link budgets for upcoming HEO/GEO
sats
Message-ID:
<CABGf72piO+EoV3vPUaROsQ3d0tN3-aTFuVa5JysMu4pFnrWn=A@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
I don't know that the polarization has been fully decided at this point.
But one discussion I heard was talking about designing a dual-band feed
horn so a single dish would suffice for both uplink and downlink. They were
saying that one band would be vertically polarized, and the other would be
horizontally polarized, to help get as much isolation between the two bands
as possible. So, we are looking at linear polarization, or more precisely,
two different linear polarizations at 90 degrees from one another.
The FTA Satellite TV LNB that we are experimenting with for the 10 GHz
downlink typically fit into a circular holder on the offset feed arm, and
you can simply rotate the whole feedhorn in the holder to vertical,
horizontal, or anywhere in between, and then clamp it down. Folks with two
dishes to isolate the uplink from the downlink will simply have to use a
feedhorn with the correct (TBD) polarization on the 5 GHz uplink.
Typically, a homebrewed feedhorn often uses a SMA Coaxial to Waveguide
adapter, and the polarization is determined by whether the SMA connector
enters the mouth of the waveguide from the top, bottom, or side. So,
getting the right polarization is mostly a matter of knowing which band
will be polarized which way.
John
On Mon, Apr 11, 2016 at 9:56 AM, Bob Freeman <uwaveguy@xxxxx.xxx> wrote:
> Hello,
>
> Have been monitoring the link budget discussion and have questions about
> polarization. Unlike the 2m and 70cm LEOs, I assume the spacecraft will be
> stabilized with a fixed polarization and not susceptible to Faraday
> rotation. What polarization is planned for the satellite for up and down
> link and do we need to start designing polarizers for the link?
>
> Keep up the great work!
>
> Regards,
> Bob
> KI4SBL
> http://ki4sbl.dodropin.org/CNCTRK
> _______________________________________________
> 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: Mon, 11 Apr 2016 16:41:06 -0400
From: "Jeff" <kb2m@xxxxxxx.xxx>
To: "Amsat" <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] AO-85
Message-ID: <36BFFA91C80A4CEC981118537188F559@xxxxxxx>
Content-Type: text/plain; charset="iso-8859-1"
Anyone have a good SatPC32 frequency pair for AO-85?
73 Jeff kb2m
------------------------------
Message: 6
Date: Mon, 11 Apr 2016 17:00:21 -0400
From: skristof@xxxxxxx.xxx
To: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] Tried ISS SSTV but nothing heard
Message-ID: <16af9edb7ef11b10a3bd01689ce234d4@xxxxxxx.xxx>
Content-Type: text/plain
No signal heard here from ISS on 2048 UTC pass. 89 degree max elevation
on this one. Even my little set up here should have heard something if
they were transmitting.
Steve AI9IN
EM79ji
On 2016-04-11 15:59, Koos van den Hout wrote:
> In one of the articles about the current ISS SSTV event was a starting time
> of 19:25 UTC, and the pass over my QTH JO22NC started at 19:28 UTC. So I
> was out with the whole setup and a strong arm to aim the antenna at the ISS
> in the hope of receiving something.
>
> But nothing was received. The fun part is that an ISS pass shortly after
> sundown gives a visual aid to aim the antenna at, but no signal received.
>
> Also noticed at http://www.dk3wn.info/p/?p=70934 [1]
Links:
------
[1] http://www.dk3wn.info/p/?p=70934
------------------------------
Message: 7
Date: Mon, 11 Apr 2016 16:01:13 -0500
From: Frank Krizan <frank.krizan@xxxxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] ISS SSTV
Message-ID: <FDD78A4A-0B7B-4499-8131-B86D3DB98B56@xxxxxxx.xxx>
Content-Type: text/plain; charset=us-ascii
Hi all,
Nothing heard on 2045Z pass over Dallas, TX
73, Frank K5HS
------------------------------
Message: 8
Date: Mon, 11 Apr 2016 17:37:29 -0400
From: Mike Seguin <n1jez@xxxxxxxxxxxxxxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] Subject: Re: Link budgets for upcoming HEO/GEO
sats
Message-ID: <570C1919.7030908@xxxxxxxxxxxxxxxxx.xxx>
Content-Type: text/plain; charset=windows-1252; format=flowed
Hi John,
On these ku band hd lnb's we're playing with for 10 GHz, you do have to
be careful with the voltage fed to them as that is how they switch
polarity remotely.
Typically, vertical is 12-14.5v and horizontal is 16-18v
Mike
On 4/11/2016 4:39 PM, John Toscano wrote:
> I don't know that the polarization has been fully decided at this point.
> But one discussion I heard was talking about designing a dual-band feed
> horn so a single dish would suffice for both uplink and downlink. They were
> saying that one band would be vertically polarized, and the other would be
> horizontally polarized, to help get as much isolation between the two bands
> as possible. So, we are looking at linear polarization, or more precisely,
> two different linear polarizations at 90 degrees from one another.
>
> The FTA Satellite TV LNB that we are experimenting with for the 10 GHz
> downlink typically fit into a circular holder on the offset feed arm, and
> you can simply rotate the whole feedhorn in the holder to vertical,
> horizontal, or anywhere in between, and then clamp it down. Folks with two
> dishes to isolate the uplink from the downlink will simply have to use a
> feedhorn with the correct (TBD) polarization on the 5 GHz uplink.
> Typically, a homebrewed feedhorn often uses a SMA Coaxial to Waveguide
> adapter, and the polarization is determined by whether the SMA connector
> enters the mouth of the waveguide from the top, bottom, or side. So,
> getting the right polarization is mostly a matter of knowing which band
> will be polarized which way.
>
> John
>
> On Mon, Apr 11, 2016 at 9:56 AM, Bob Freeman <uwaveguy@xxxxx.xxx> wrote:
>
>> Hello,
>>
>> Have been monitoring the link budget discussion and have questions about
>> polarization. Unlike the 2m and 70cm LEOs, I assume the spacecraft will be
>> stabilized with a fixed polarization and not susceptible to Faraday
>> rotation. What polarization is planned for the satellite for up and down
>> link and do we need to start designing polarizers for the link?
>>
>> Keep up the great work!
>>
>> Regards,
>> Bob
>> KI4SBL
>> http://ki4sbl.dodropin.org/CNCTRK
>> _______________________________________________
>> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
>> to all interested persons worldwide without requiring membership. Opinions
>> expressed
>> are solely those of the author, and do not reflect the official views of
>> AMSAT-NA.
>> Not an AMSAT-NA member? Join now to support the amateur satellite program!
>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership. Opinions
expressed
> are solely those of the author, and do not reflect the official views of
AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>
--
73,
Mike, N1JEZ
"A closed mouth gathers no feet"
------------------------------
Message: 9
Date: Mon, 11 Apr 2016 18:18:11 -0400
From: jeffory broughton <jefforybroughton@xxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Ao85 doppler sqf file
Message-ID:
<CACm2je2B3k1mdf28VxUC+N2UuPoNDX6eR-FG_zwHKqzCCGOf0Q@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
Use these two freq in ur doppler.sqf file
145.977 mhz
435.172 mhz
Keep your AFC on if you have it,your rig will latch on to the rx freq and
not let go.
jeff broughton
------------------------------
Message: 10
Date: Mon, 11 Apr 2016 18:47:18 -0400
From: jeffory broughton <jefforybroughton@xxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Modify a tv rotor for sat use
Message-ID:
<CACm2je1jJDiX4huruX7VcnMKAsQTViuNCrr=3zNTcVzdX286bg@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
Here is the link to add feedback to a TV rotor to drive your controller and
use with satpc32.
http://www.dougbraun.com/rotor_mod.html
jeff broughton
------------------------------
Message: 11
Date: Mon, 11 Apr 2016 16:49:27 -0600
From: Bob Cutter <ki0g@xxxxx.xxx>
To: Frank Krizan <frank.krizan@xxxxxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] ISS SSTV
Message-ID: <D8C947DC-06C3-4C83-87F3-41EE8875558D@xxxxx.xxx>
Content-Type: text/plain; charset=us-ascii
Note on the ARISS page, dated 4/11, says no output from transmitter.
Bob KI0G
> On Apr 11, 2016, at 3:01 PM, Frank Krizan <frank.krizan@xxxxxxx.xxx> wrote:
>
> Hi all,
>
> Nothing heard on 2045Z pass over Dallas, TX
>
> 73, Frank K5HS
>
> _______________________________________________
> 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: Mon, 11 Apr 2016 16:54:11 -0600
From: Bob Cutter <ki0g@xxxxx.xxx>
To: amsat-bb <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] SSTV on ISS
Message-ID: <5409A6ED-2337-4A29-AB49-5F3A00C27376@xxxxx.xxx>
Content-Type: text/plain; charset=us-ascii
Update (April 11, 2016)
Looks like the start will be delayed. Seems the hardware is having issues
and not transmitting. Troubleshooting is in work.
From the ARISS blog
------------------------------
Message: 13
Date: Mon, 11 Apr 2016 19:02:53 -0400
From: "Jeff" <jeff_griffin@xxxxxxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] Ao85 doppler sqf file
Message-ID: <915E18128CFB4DF1BAC7BB86EC63A245@xxxxxxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
Interesting. The last time I used AFC was on the AO-51 2.4 gig FM D/L. The
d/l freq is now spot on, but the u/l is still off. It's hard to find the
right freq pair on a touchy FM bird like AO-85 without being a nuisance :-)
73 Jeff kb2m
-----Original Message-----
From: jeffory broughton
Sent: Monday, April 11, 2016 6:18 PM
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Ao85 doppler sqf file
Use these two freq in ur doppler.sqf file
145.977 mhz
435.172 mhz
Keep your AFC on if you have it,your rig will latch on to the rx freq and
not let go.
jeff broughton
_______________________________________________
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: 14
Date: Mon, 11 Apr 2016 19:36:57 -0400
From: jeffory broughton <jefforybroughton@xxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Ao85 doppler,sqf
Message-ID:
<CACm2je35_wLX9cR7yCVTthd5EHapOYS2LMHZ0iUoURZSt3Pd4A@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
That pair works perfect.
Use wb tx low mic gain
Of nb tx with higher mic gain
Monitor your D.L.for cleanest audio.
Good luck.
jeff broughton
------------------------------
Message: 15
Date: Mon, 11 Apr 2016 21:06:03 -0400
From: Richard Lawn <rjlawn@xxxxx.xxx>
To: Amsat BB <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Rig in for repair
Message-ID:
<CADQmrTEi5Tt4fMSHNdL6pW6GamkwYFNOgS_zHWq2rjMKrL9GRA@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
I'll be off the birds for about 2 weeks while my 9100 is getting the ALC
overshoot problem taken care of by icom techs. I wouldn't have bothered but
I plan to begin to try some eme operation with an amp so I didn't want to
risk frying the finals.
I'll miss the birds!
73
Rick, W2JAZ
--
Sent from Gmail Mobile
------------------------------
Message: 16
Date: Tue, 12 Apr 2016 07:41:22 +0000 (UTC)
From: Nitin Muttin <vu3tyg@xxxxx.xx.xx>
To: AMSAT BB <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] ISS SSTV Active
Message-ID:
<1852417458.982081.1460446882362.JavaMail.yahoo@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
SSTV active during the 7.35 UTC pass over India?73
Nitin [VU3TYG]
------------------------------
Subject: Digest Footer
_______________________________________________
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 member? Join now to support the amateur satellite program!
http://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
End of AMSAT-BB Digest, Vol 11, Issue 116
*****************************************
Read previous mail | Read next mail
| |
