| |
CX2SA > SATDIG 29.08.20 15:25l 609 Lines 18308 Bytes #999 (0) @ WW
BID : AMSATBB15356
Read: GUEST
Subj: AMSAT-BB-digest V15 356
Path: IW8PGT<IZ3LSV<DB0ERF<DB0RES<ON0AR<OZ5BBS<CX2SA
Sent: 200829/1322Z @:CX2SA.SAL.URY.SOAM #:38678 [Salto] FBB7.00e $:AMSATBB15356
From: CX2SA@CX2SA.SAL.URY.SOAM
To : SATDIG@WW
Today's Topics:
1. Re: APRS Messaging QSOs (Zach Metzinger)
2. Re: APRS Messaging QSOs (Yono Adisoemarta)
3. Re: APRS Messaging QSOs (aux keyboard) (Robert Bruninga)
4. Re: APRS Messaging QSOs (Robert Bruninga)
5. TS-2000x PROGRAMMING (William Herzberg)
6. Roving DM07/08 gridline (Bob Keating)
7. ElectroSense Up/Down Converter board for 0-6 Ghz (Mike Hoblinski)
8. Re: TS-2000x PROGRAMMING (Burns Fisher)
9. Re: ElectroSense Up/Down Converter board for 0-6 Ghz
(Burns Fisher)
10. Rocket Lab Launch postponed again (Wendy and Terry Osborne)
11. Noise Blanker in FM (John Geiger)
12. Re: Noise Blanker in FM (Phil Karn)
13. Doppler Tracking Discontinuity at TCA - Problem Solved
(Hasan N0AN)
----------------------------------------------------------------------
Message: 1
Date: Wed, 26 Aug 2020 19:14:01 -0500
From: Zach Metzinger <zmetzing@?????.???>
To: amsat-bb@?????.???
Subject: Re: [amsat-bb] APRS Messaging QSOs
Message-ID: <19553954-a666-de9e-14a3-eef2cc0e0b26@?????.???>
Content-Type: text/plain; charset=utf-8; format=flowed
On 08/26/20 16:04, Jeff Johns via AMSAT-BB wrote:
> The barrage of unattended stations that beacon every few seconds.
This is the main problem with ALOHA-like TX scheduling, or lack thereof.[1]
We're using slow, outdated Bell 202 modems to transmit data on 2 meters.
There are better ways, and better technology to do so.
Take, for instance, the proliferation of "sub-1GHz" digital radio modem
chips from TI, ST, NXP, Silicon Labs, ON semi, etc. Many of them can
transmit in most amateur bands between 2m and 928MHz.
Let's get out of the 2m packet mindset and on to higher data rate
networks on 1.25m, 70cm, and 33cm!
I've got a small back-burner project which I hope to share when I get
some time. It is along these lines.
--- Zach
N0ZGO
[1] https://en.wikipedia.org/wiki/ALOHAnet#Pure_ALOHA
------------------------------
Message: 2
Date: Thu, 27 Aug 2020 07:55:30 +0700
From: Yono Adisoemarta <yono_adisoemarta@?????.???>
To: Robert Bankston <ke4al@?????.???>, Robert Bankston
<ke4al@?????.???>
Cc: AMSAT BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] APRS Messaging QSOs
Message-ID: <DFF47455-E44E-4487-996A-DDEAA4E694AF@?????.???>
Content-Type: text/plain; charset=utf-8
Over here in Indonesia, APRS via satellite is busy whenever IO-86 passes
with APRS mode or ISS.
Typically 3-5 stations are exchanging messages.
The equipment ranges from Baofeng HT with aprsdroid on smartphone to a Moxon
antenna up to UISS on a regular computer.
Gotta go, IO-86 is coming in a minute with APRS mode.
73 de Yono - YD0NXX
Jakarta, Indonesia
Sent from my iPhone
> On Aug 27, 2020, at 2:04 AM, Robert Bankston via AMSAT-BB
<amsat-bb@?????.???> wrote:
>
> ?It's a shame that their are not more APRS messaging satellite QSOs being
done via ARISS and other satellites. Is this because...
> * Lack of equipment? * Erratic operational schedules? * Proliferation
of non-attended stations (beacons)? * Too much button pushing?
> Most ops you an HT and very few of those have APRS messaging capability.
Those HT's that do (including mobiles) are a bit clunky and require fast
thumbs to complete all of the necessary steps to complete a QSO. Of course
the more you do it, the more second nature it becomes, but that circles back
to the erratic scheduling.
> One solution could be to develop an app or software with prescribed
message formatting and QSO automation, similar to similar FT8.
> (click on target call in station list) * [Target Call] [My Call] [My
Grid] * [My Call] [Target Call] (Target Grid] * R [Target Grid] * RR [My
Grid] (click on log QSO)
> Single board computers could easily handle the task (even the Pi Zero),
for those worried about keeping their station small. Only thing left would
be a microarduino TNC or soundcard and a couple cables to the HT mic and
earphone jacks.
> Just a thought.
> 73, Robert KE4AL
> _______________________________________________
>
------------------------------
Message: 3
Date: Thu, 27 Aug 2020 10:41:27 -0400
From: Robert Bruninga <bruninga@????.???>
To: "amsat-bb@?????.???? <amsat-bb@?????.???>
Subject: Re: [amsat-bb] APRS Messaging QSOs (aux keyboard)
Message-ID:
<CALdCfN+YSWcfQDjUvu2VThB6yDxm5ypNkWBCMGDp=g7r9vP2gQ@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
What I wish APRS radio manufacturers would do is add parsing on the GPS
port for messages from an external keyboard. Then let hams build the
external keyboard.
The GPS parser is looking for GPXXX strings and could eequlaly well look
for APMSG...
And the external keyboard could generate the APMSG..... message.
Would seem to be a trivial ask...
Bob
On Wed, Aug 26, 2020 at 7:57 PM GEO Badger via AMSAT-BB <amsat-bb@?????.???>
wrote:
> Alas, no longer available.
> ---
> Here is something I used to use to type in messages while mobile with my
> D-700 years ago. It worked great for typing in APRS messages in the Kenwood
> radios...
>
> https://www.eham.net/reviews/view-product?id=4960
>
> I wonder if it is still available, what do you think John?
>
> 73 Jeff kb2m
>
>
>
------------------------------
Message: 4
Date: Thu, 27 Aug 2020 10:58:59 -0400
From: Robert Bruninga <bruninga@????.???>
To: Jeff Johns <jeff30339@?????.???>
Cc: AMSAT Mailing List <Amsat-bb@?????.???>
Subject: Re: [amsat-bb] APRS Messaging QSOs
Message-ID:
<CALdCfN+Ak3P4bxc2L98zeJ5jiGUXqrhTQjP=fn=_gChrUdu6GA@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
>
> > I frequently work
> it using a vintage Kenwood TH-D7 and an Arrow. What makes it more fun
> (challenging) for me is that the D7 cannot store 'canned' messages and I
> have to type out each message in T9 format, live, during the pass.
>
> Hummh.. I do not remember such a limitation. Cannot you just call up an
old message and edit/resend it?
Bob
>
>
------------------------------
Message: 5
Date: Thu, 27 Aug 2020 14:14:52 -0400
From: William Herzberg <wthypsi@?????.???>
To: "amsat-bb@?????.???? <amsat-bb@?????.???>
Subject: [amsat-bb] TS-2000x PROGRAMMING
Message-ID: <20200827182602.8788492E1@??????????.?????.???>
Content-Type: text/plain; charset="utf-8"
HELLO ALL?
Ive been using a TS-2000x for over 3 years now?
Ive been using it for both normal HF as well as the satellites?
Ive found it an excellent satellite rig?
The only problem with it is that its only got 10 pre-programmed memory
channels?
But it does have 300 main memory channels?
I programmed it with all the frequencies used by W1AW?
That give me an excellent indication as to which bands are open?
I often checked the upper HF frequencies to see if the bands are open?
Over the last several weeks, there have been afternoons and evenings when I
was able to hear the broadcasts all the way up to 10 meters?.
Usually the broadcasts cut off above 17 meters?.
Ive found that Its easiest to program the analog sats into the satellite
memories?
That leaves the main channels to program the FM birds?
It does mean that if I am trying to access the FM birds, I have to program
at least 2 channels for each FM satellite?
One channel for uplink, the other for downlink?
It works quite well?..
Ive made 300 contacts through both the FM and the Analog satellites this way?
It also works to monitor the beacon satellites?
I can copy LO-19 quite well?.
That satellites been up for more than 30 years?
It sends a steady carrier?.
But its got a really good signal?
Ive recently acquired an ICOM IC-9700?
It does work quite well?
But I still think my Kenwood works a bit better?
BTW?
Im using the rigs barefoot?less than 80 watts?into an Eggbeater on top of
the roof?
I have a UHF preamp?.
It kicks things up by almost twice the signal strengths?
Ive got to return a 2 meter preamp because it doesn?t work?.
But that should boost up the 2 meter signals?
Good luck all?
Hope to see ya on the birds?
I made my first qsos on the 9700?
Im hoping the new upgrades will boost things up a bit?
73?
de Bill, AA8WH?
Sent from Mail for Windows 10
------------------------------
Message: 6
Date: Thu, 27 Aug 2020 11:48:35 -0700
From: Bob Keating <bkeating1954@?????.???>
To: AMSAT-BB@?????.???
Subject: [amsat-bb] Roving DM07/08 gridline
Message-ID: <dd19fec9-9e29-596c-2ef0-f52cf73bbcac@?????.???>
Content-Type: text/plain; charset=utf-8; format=flowed
I will be on vacation next week in the Eastern Sierra and plan to work
AO-91, AO-92 and PO-101 from the DM07/08 gridline on a holiday schedule
from Wednesday, Sept. 2 to Saturday, Sept. 5. I will post more info once
we arrive. Hope to work you on the birds.
73,
Bob N6REK
------------------------------
Message: 7
Date: Thu, 27 Aug 2020 12:01:56 -0700
From: Mike Hoblinski <hobergenix@?????.???>
To: amsat-bb@?????.???
Subject: [amsat-bb] ElectroSense Up/Down Converter board for 0-6 Ghz
Message-ID:
<CAMpzqDGy5V_avrMjQ_M6H2p3vMdWQXyWV+sD4qm9PHSQ+TzMQQ@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
I read this on the RTL-SDR web site and thought it might be of some
interest.
It's a converter board being developed for a spectrum monitoring project.
Its a
low cost converter board to be used with a RTL-Sdr dongle and a Raspberry
pi board and it may be capable of working up to 13 Ghz.
https://www.rtl-sdr.com/testing-the-electrosense-up-downconverter-expansion-bo
ard-for-0-6-ghz/
ElectroSense Project and Board website.
https://electrosense.org/#!/
Mike
N6IMF
------------------------------
Message: 8
Date: Thu, 27 Aug 2020 15:14:15 -0400
From: Burns Fisher <wb1fj-bb@??????.??>
To: William Herzberg <wthypsi@?????.???>
Cc: "amsat-bb@?????.???? <amsat-bb@?????.???>
Subject: Re: [amsat-bb] TS-2000x PROGRAMMING
Message-ID:
<CABX7KxVbCD+HZ8CVhEpof18sQfuH8MOqiVJ6CV-xaAhgU2bLvQ@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Oh, Bill's mail just made me think that maybe the original writer is asking
how to remotely program the Satellite memories! I never thought of that
since I never have used them. I just use computer aided tuning so all the
satellite memories are on my computer :-)
Burns WB1FJ
On Thu, Aug 27, 2020 at 2:32 PM William Herzberg via AMSAT-BB <
amsat-bb@?????.???> wrote:
> HELLO ALL?
>
> Ive been using a TS-2000x for over 3 years now?
>
> Ive been using it for both normal HF as well as the satellites?
>
> Ive found it an excellent satellite rig?
>
> The only problem with it is that its only got 10 pre-programmed memory
> channels?
>
> But it does have 300 main memory channels?
>
> I programmed it with all the frequencies used by W1AW?
>
> That give me an excellent indication as to which bands are open?
>
> I often checked the upper HF frequencies to see if the bands are open?
>
> Over the last several weeks, there have been afternoons and evenings when
> I was able to hear the broadcasts all the way up to 10 meters?.
>
> Usually the broadcasts cut off above 17 meters?.
>
> Ive found that Its easiest to program the analog sats into the satellite
> memories?
>
> That leaves the main channels to program the FM birds?
>
> It does mean that if I am trying to access the FM birds, I have to program
> at least 2 channels for each FM satellite?
>
> One channel for uplink, the other for downlink?
>
> It works quite well?..
>
> Ive made 300 contacts through both the FM and the Analog satellites this
> way?
>
> It also works to monitor the beacon satellites?
>
> I can copy LO-19 quite well?.
>
> That satellites been up for more than 30 years?
>
> It sends a steady carrier?.
>
> But its got a really good signal?
>
> Ive recently acquired an ICOM IC-9700?
>
> It does work quite well?
>
> But I still think my Kenwood works a bit better?
>
> BTW?
>
> Im using the rigs barefoot?less than 80 watts?into an Eggbeater on top of
> the roof?
>
> I have a UHF preamp?.
>
> It kicks things up by almost twice the signal strengths?
>
> Ive got to return a 2 meter preamp because it doesn?t work?.
>
> But that should boost up the 2 meter signals?
>
> Good luck all?
>
> Hope to see ya on the birds?
>
> I made my first qsos on the 9700?
>
> Im hoping the new upgrades will boost things up a bit?
>
> 73?
> de Bill, AA8WH?
>
> Sent from Mail for Windows 10
>
> _______________________________________________
> 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: https://www.amsat.org/mailman/listinfo/amsat-bb
>
------------------------------
Message: 9
Date: Thu, 27 Aug 2020 17:41:35 -0400
From: Burns Fisher <wb1fj-bb@??????.??>
To: Mike Hoblinski <hobergenix@?????.???>
Cc: AMSAT BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] ElectroSense Up/Down Converter board for 0-6
Ghz
Message-ID:
<CABX7KxW=_tKymV_+cM_CYZiC5JHe3sxyM8=Bfx+tpE84o3DkRQ@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Cool! Thank you!
On Thu, Aug 27, 2020 at 3:05 PM Mike Hoblinski via AMSAT-BB <
amsat-bb@?????.???> wrote:
> I read this on the RTL-SDR web site and thought it might be of some
> interest.
> It's a converter board being developed for a spectrum monitoring project.
> Its a
> low cost converter board to be used with a RTL-Sdr dongle and a Raspberry
> pi board and it may be capable of working up to 13 Ghz.
>
>
>
https://www.rtl-sdr.com/testing-the-electrosense-up-downconverter-expansion-bo
ard-for-0-6-ghz/
>
>
> ElectroSense Project and Board website.
> https://electrosense.org/#!/
>
> Mike
> N6IMF
> _______________________________________________
> 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: https://www.amsat.org/mailman/listinfo/amsat-bb
>
------------------------------
Message: 10
Date: Fri, 28 Aug 2020 14:42:00 +1200
From: Wendy and Terry Osborne <wandtosborne@?????.???>
To: "amsat-bb@?????.???? <amsat-bb@?????.???>, "Selwyn
ZL2BJO@?????.???? <ZL2BJO@?????.???>, Roger Bould
<rogannbould@?????.???>
Subject: [amsat-bb] Rocket Lab Launch postponed again
Message-ID: <cec19752-98ba-dd2d-1b75-50cf563908d8@?????.???>
Content-Type: text/plain; charset=utf-8; format=flowed
The weather at the launch is not looking very good for today or tomorrow.
See: https://twitter.com/RocketLab/status/1299090222462808064
New launch date Sunday 30th August .
See: https://twitter.com/RocketLab/status/1299090967568330752
73,
Terry Osborne ZL2BAC
------------------------------
Message: 11
Date: Fri, 28 Aug 2020 22:01:38 -0500
From: John Geiger <af5cc2@?????.???>
To: AMSAT <amsat-bb@?????.???>
Subject: [amsat-bb] Noise Blanker in FM
Message-ID:
<CAHC1P2-SZrOB8emMfr6n1qPMVZ-4cnyTU_LO4_AwmTL476Nm2Q@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Does anyone on the list know of any satellite radios or 2 meter radios that
have a noise blanker that functions in FM mode? I am getting some bad
noise to my north and northeast that is interfering with the FM sats, so am
looking for a rig that can help with this.
73 John AF5CC
------------------------------
Message: 12
Date: Sat, 29 Aug 2020 01:26:32 -0700
From: Phil Karn <karn@????.???>
To: amsat-bb@?????.???
Subject: Re: [amsat-bb] Noise Blanker in FM
Message-ID: <7329a5d4-9097-2c6b-5400-323c30cc5105@????.???>
Content-Type: text/plain; charset=utf-8
On 8/28/20 20:01, John Geiger via AMSAT-BB wrote:
> Does anyone on the list know of any satellite radios or 2 meter radios that
> have a noise blanker that functions in FM mode? I am getting some bad
> noise to my north and northeast that is interfering with the FM sats, so am
> looking for a rig that can help with this.
>
> 73 John AF5CC
> _______________________________________________
> 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: https://www.amsat.org/mailman/listinfo/amsat-bb
Can you characterize the noise? Impulse? Regular? Power line corona?
------------------------------
Message: 13
Date: Sat, 29 Aug 2020 08:15:34 -0500
From: Hasan N0AN <hbasri.schiers6@?????.???>
To: AMSAT-BB <amsat-bb@?????.???>
Subject: [amsat-bb] Doppler Tracking Discontinuity at TCA - Problem
Solved
Message-ID:
<CAM4UQf2vih=5dK8v=AqO+SqV5P4GEd5MsX66V2y__qBbWg3BSA@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Over the last week or two, I have been getting a 200 Hz discontinuity jump
in my uplink frequency at TCA (Time of Closest Approach), also known as the
zero doppler point. This happened on every bird, every pass. (all mode B,
70cm up, 2m down)
AOS was early, LOS was late, and doppler tracking was non-linear and had
the bad jump at TCA.
Today, thanks to K5GZR and KB7IJ, the problem source was identified and
corrected.
It was caused by a terrible error in the definition of my Home Altitude. I
typed in, 350 meters. The program took it 35,000 meters.
I corrected it and now doppler tracking in SDRC v3.x is perfect.
If anyone else ever gets a set of symptoms like mine, take a look at your
Home QTH altitude setting. Being off by a factor of 100:1 makes a
difference.
73, N0AN
Hasan
------------------------------
Subject: Digest Footer
_______________________________________________
Sent via amsat-bb@?????.???.
AMSAT-NA makes this open forum available to all interested persons worldwide
without requiring membership. Opinions expressed
are solely those of the author, and do not reflect the official views of
AMSAT-NA.
Not an AMSAT member? Join now to support the amateur satellite program!
https://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
End of AMSAT-BB Digest, Vol 15, Issue 356
*****************************************
Read previous mail | Read next mail
| |
