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CX2SA > SATDIG 29.08.20 20:36l 628 Lines 22831 Bytes #999 (0) @ WW
BID : AMSATBB15357
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Subj: AMSAT-BB-digest V15 357
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Sent: 200829/1833Z @:CX2SA.SAL.URY.SOAM #:38688 [Salto] FBB7.00e $:AMSATBB15357
From: CX2SA@CX2SA.SAL.URY.SOAM
To : SATDIG@WW
Today's Topics:
1. G5400 rotator position pot. (Tom Lubbers K8TL)
2. Proximity to grid line boundary (tjschuessler@???????.????
3. Re: Proximity to grid line boundary (Don KB2YSI)
4. Re: Proximity to grid line boundary (Michael Whitman)
5. Re: Proximity to grid line boundary (Sean K.)
6. Re: Proximity to grid line boundary (tjschuessler@???????.????
7. Re: G5400 rotator position pot. (Kevin)
8. Re: Doppler Tracking Discontinuity at TCA - Problem Solved
(Bruce Perens)
9. Re: Doppler Tracking Discontinuity at TCA - Problem Solved
(Hasan N0AN)
10. FW: G5400 rotator position pot. (Gary)
----------------------------------------------------------------------
Message: 1
Date: Sat, 29 Aug 2020 12:08:42 -0400 (GMT-04:00)
From: Tom Lubbers K8TL <k8tl@?????????.???>
To: AMSAT BB <amsat-bb@?????.???>
Subject: [amsat-bb] G5400 rotator position pot.
Message-ID:
<1803177975.2222.1598717322488@???????????.???.??.?????????.???>
Content-Type: text/plain; charset=UTF-8
Anyone know a source or a replacement pot for the Yaesu G5400 azimuth
rotor. That's the 500 ohm pot that measures the position.
Tom K8TL
------------------------------
Message: 2
Date: Sat, 29 Aug 2020 11:35:51 -0500
From: <tjschuessler@???????.???>
To: <amsat-bb@?????.???>
Subject: [amsat-bb] Proximity to grid line boundary
Message-ID: <003c01d67e22$75b14cf0$6113e6d0$@???????.???>
Content-Type: text/plain; charset="us-ascii"
For my information, as I am not much of a rover, but as I may be doing a
little local grid rove sometime next weekend by request, how far from a grid
boundary can you be for it to count? I found a 4 corners grid boundary in
my area, but it is way rural in a deep clump of vegetation with a dirt road
a couple hundred feet away. What is the maximum deviation from an X
.000000; Y.000000 location for it to be legal as a 4 grid location? I will
probably do a much easier 2 grid line location, but just wondering.
Thanks much.
Tom Schuessler, N5HYP
EM12ms
------------------------------
Message: 3
Date: Sat, 29 Aug 2020 12:46:59 -0400
From: Don KB2YSI <kb2ysi@?????.???>
To: Tom Schuessler <tjschuessler@???????.???>
Cc: AMSAT BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Proximity to grid line boundary
Message-ID:
<CAAJiE8O2DXQR=QvfuGgLVxkqqy2ZrGfFEtG37nUTsszfqEZQTQ@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
The VUCC rules (
http://www.arrl.org/files/file/Awards/VUCC%20Rules%20April%202020.pdf)
state:
(F) Grid boundary lines and grid corners must be established using a GPS
receiver whose map datum is set to WGS84, the global default for curif nt
GPS receivers. The GPS receiver should be set to use WAAS (Wide Area
Augmentation System) if so equipped, since this improves the error figure
to as little as 5 feet. In no case may the GPS receiver show an error
figure in excess of 20 feet. Any modern GPS receiver equipped with WAAS
will easily meet this requirement, as will most older
units without WAAS.
On Sat, Aug 29, 2020, 12:37 Tom Schuessler, N5HYP via AMSAT-BB <
amsat-bb@?????.???> wrote:
> For my information, as I am not much of a rover, but as I may be doing a
> little local grid rove sometime next weekend by request, how far from a
> grid
> boundary can you be for it to count? I found a 4 corners grid boundary in
> my area, but it is way rural in a deep clump of vegetation with a dirt road
> a couple hundred feet away. What is the maximum deviation from an X
> .000000; Y.000000 location for it to be legal as a 4 grid location? I will
> probably do a much easier 2 grid line location, but just wondering.
>
> Thanks much.
>
> Tom Schuessler, N5HYP
> EM12ms
>
>
>
> _______________________________________________
> 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: 4
Date: Sat, 29 Aug 2020 12:54:03 -0400
From: Michael Whitman <michael@?????.???>
To: AMSAT BB <amsat-bb@?????.???>
Cc: Tom Schuessler <tjschuessler@???????.???>
Subject: Re: [amsat-bb] Proximity to grid line boundary
Message-ID: <23EA625E-6F0E-4722-9978-F265ABA4B590@?????.???>
Content-Type: text/plain; charset=us-ascii
You should operate at the spot where your GPS receiver (using the
settings/rules that Don highlighted) reads out *.000000 for a line or
*.000000, *.000000 for a corner.
73,
Michael, N4DCW
--
Michael Whitman
michael@?????.???
Home Grid: EM78
> On Aug 29, 2020, at 12:46 PM, Don KB2YSI via AMSAT-BB <amsat-bb@?????.???>
wrote:
>
> The VUCC rules (
> http://www.arrl.org/files/file/Awards/VUCC%20Rules%20April%202020.pdf)
> state:
>
> (F) Grid boundary lines and grid corners must be established using a GPS
> receiver whose map datum is set to WGS84, the global default for curif nt
> GPS receivers. The GPS receiver should be set to use WAAS (Wide Area
> Augmentation System) if so equipped, since this improves the error figure
> to as little as 5 feet. In no case may the GPS receiver show an error
> figure in excess of 20 feet. Any modern GPS receiver equipped with WAAS
> will easily meet this requirement, as will most older
> units without WAAS.
>
> On Sat, Aug 29, 2020, 12:37 Tom Schuessler, N5HYP via AMSAT-BB <
> amsat-bb@?????.???> wrote:
>
>> For my information, as I am not much of a rover, but as I may be doing a
>> little local grid rove sometime next weekend by request, how far from a
>> grid
>> boundary can you be for it to count? I found a 4 corners grid boundary in
>> my area, but it is way rural in a deep clump of vegetation with a dirt road
>> a couple hundred feet away. What is the maximum deviation from an X
>> .000000; Y.000000 location for it to be legal as a 4 grid location? I will
>> probably do a much easier 2 grid line location, but just wondering.
>>
>> Thanks much.
>>
>> Tom Schuessler, N5HYP
>> EM12ms
>>
>>
>>
>> _______________________________________________
>> 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
>>
> _______________________________________________
> 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: 5
Date: Sat, 29 Aug 2020 17:15:30 +0000 (UTC)
From: "Sean K." <kx9x@?????.???>
To: Tom Schuessler <tjschuessler@???????.???>, Don KB2YSI
<kb2ysi@?????.???>
Cc: AMSAT BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Proximity to grid line boundary
Message-ID: <1504914038.194376.1598721330015@????.?????.???>
Content-Type: text/plain; charset=UTF-8
Hi Tom-
I helped overhaul the VUCC rules when I was at ARRL HQ.
This paragraph spells it out:
"Stations who claim to operate from more than one grid locator
simultaneously (i.e., from the boundary between two grid locators or from
the intersection of four grid locators) must be physically present in all
locators to give multiple locator credit with a single contact. These
stations should be prepared to validate their claim. For a mobile station,
this means parking the vehicle exactly on the line or corner. For a portable
station, this means that the total area occupied by the station's physical
setup, including operating position(s), power source(s), and antenna(s),
must occupy some portion of each of the two/four grid squares
simultaneously. Operators of boundary/corner stations should be prepared to
provide evidence of meeting the simultaneous occupation test if called upon
to do so. Two photographs -- one showing the placement of the GPS receiver
in the station setup, and a close-up legibly showing the GPS reading ? are
typically needed as evidence of compliance. Video foo
tage showing an overview of the operating site and then, uncut and in real
time, zooming in on the GPS display coordinates is even better."
Sean Kutzko Amateur Radio KX9XAMSAT Volunteer
Coordinatorhttps://amsat.org/volunteer
On Saturday, August 29, 2020, 11:48:39 AM CDT, Don KB2YSI via AMSAT-BB
<amsat-bb@?????.???> wrote:
The VUCC rules (
http://www.arrl.org/files/file/Awards/VUCC%20Rules%20April%202020.pdf)
state:
(F) Grid boundary lines and grid corners must be established using a GPS
receiver whose map datum is set to WGS84, the global default for curif nt
GPS receivers. The GPS receiver should be set to use WAAS (Wide Area
Augmentation System) if so equipped, since this improves the error figure
to as little as 5 feet. In no case may the GPS receiver show an error
figure in excess of 20 feet. Any modern GPS receiver equipped with WAAS
will easily meet this requirement, as will most older
units without WAAS.
On Sat, Aug 29, 2020, 12:37 Tom Schuessler, N5HYP via AMSAT-BB <
amsat-bb@?????.???> wrote:
> For my information, as I am not much of a rover, but? as I may be doing a
> little local grid rove sometime next weekend by request, how far from a
> grid
> boundary can you be for it to count?? I found a 4 corners grid boundary in
> my area, but it is way rural in a deep clump of vegetation with a dirt road
> a couple hundred feet away.? What is the maximum deviation from an X
> .000000; Y.000000 location for it to be legal as a 4 grid location?? I will
> probably do a much easier 2 grid line location, but just wondering.
>
> Thanks much.
>
> Tom Schuessler, N5HYP
> EM12ms
>
>
>
> _______________________________________________
> 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
>
_______________________________________________
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: 6
Date: Sat, 29 Aug 2020 12:15:45 -0500
From: <tjschuessler@???????.???>
To: "'Michael Whitman'" <michael@?????.???>, "'AMSAT BB'"
<amsat-bb@?????.???>
Subject: Re: [amsat-bb] Proximity to grid line boundary
Message-ID: <004e01d67e28$08da3c80$1a8eb580$@???????.???>
Content-Type: text/plain; charset="iso-8859-1"
Which is obviously why it is a lot harder to hit a 4 corners location
because it will invariably plop you in a grove of dense vegetation. I will
stick with the two grid on the line on a main rod thing because I can get it
right.
From: Michael Whitman <michael@?????.???>
Sent: Saturday, August 29, 2020 11:54 AM
To: AMSAT BB <amsat-bb@?????.???>
Cc: Don KB2YSI <kb2ysi@?????.???>; Tom Schuessler <tjschuessler@???????.???>
Subject: Re: [amsat-bb] Proximity to grid line boundary
You should operate at the spot where your GPS receiver (using the
settings/rules that Don highlighted) reads out *.000000 for a line or
*.000000, *.000000 for a corner.?
73,
Michael, N4DCW
--
Michael Whitman
mailto:michael@?????.???
Home Grid: EM78
On Aug 29, 2020, at 12:46 PM, Don KB2YSI via AMSAT-BB
<mailto:amsat-bb@?????.???> wrote:
The VUCC rules (
http://www.arrl.org/files/file/Awards/VUCC%20Rules%20April%202020.pdf)
state:
(F) Grid boundary lines and grid corners must be established using a GPS
receiver whose map datum is set to WGS84, the global default for curif nt
GPS receivers. The GPS receiver should be set to use WAAS (Wide Area
Augmentation System) if so equipped, since this improves the error figure
to as little as 5 feet. In no case may the GPS receiver show an error
figure in excess of 20 feet. Any modern GPS receiver equipped with WAAS
will easily meet this requirement, as will most older
units without WAAS.
On Sat, Aug 29, 2020, 12:37 Tom Schuessler, N5HYP via AMSAT-BB <
mailto:amsat-bb@?????.???> wrote:
For my information, as I am not much of a rover, but ?as I may be doing a
little local grid rove sometime next weekend by request, how far from a
grid
boundary can you be for it to count? ?I found a 4 corners grid boundary in
my area, but it is way rural in a deep clump of vegetation with a dirt road
a couple hundred feet away. ?What is the maximum deviation from an X
.000000; Y.000000 location for it to be legal as a 4 grid location? ?I will
probably do a much easier 2 grid line location, but just wondering.
Thanks much.
Tom Schuessler, N5HYP
EM12ms
_______________________________________________
Sent via mailto: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
_______________________________________________
Sent via mailto: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: 7
Date: Sat, 29 Aug 2020 10:17:19 -0700
From: Kevin <wa7fwf@?????.???>
To: amsat-bb@?????.???
Subject: Re: [amsat-bb] G5400 rotator position pot.
Message-ID: <36af93ef-1ad3-de53-8cee-b6e712d0b894@?????.???>
Content-Type: text/plain; charset=utf-8; format=flowed
yaesuparts@?????.??? or 714-827-7600 x 4
On 8/29/2020 9:08 AM, Tom Lubbers K8TL via AMSAT-BB wrote:
> Anyone know a source or a replacement pot for the Yaesu G5400 azimuth
rotor. That's the 500 ohm pot that measures the position.
>
> Tom K8TL
> _______________________________________________
> 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: 8
Date: Sat, 29 Aug 2020 10:52:10 -0700
From: Bruce Perens <bruce@??????.???>
To: Hasan N0AN <hbasri.schiers6@?????.???>
Cc: AMSAT-BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Doppler Tracking Discontinuity at TCA -
Problem Solved
Message-ID:
<CAK2MWOvLYK1LoR1pDuJo=iuHwAqnVtpJOmBf6_L-J3___O0dqA@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
It's a software bug when the software quietly accepts an impossible
parameter.
On Sat, Aug 29, 2020, 6:17 AM Hasan N0AN via AMSAT-BB <amsat-bb@?????.???>
wrote:
> 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
> _______________________________________________
> 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: Sat, 29 Aug 2020 13:15:52 -0500
From: Hasan N0AN <hbasri.schiers6@?????.???>
To: Bruce Perens <bruce@??????.???>
Cc: AMSAT-BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Doppler Tracking Discontinuity at TCA -
Problem Solved
Message-ID:
<CAM4UQf2Rk+FE8cQe_DnbdZgYS9rR_=Pd3G05Dt_xnLLArG+gGg@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Hi Bruce,
I'm sure it should be error trapped when an absolutely crazy value is
input, but I'm not pointing the finger at any programmer, when I, in fact,
input the wrong, really wrong, value.
I'm just glad I found it and now doppler tracking is perfectly even on an
89 degree overhead pass.
Considering all the things done right in the software, way beyond any other
program I've seen, I'm not going to complain.
The program auto-schedules, tracks, prioritizes and presents for decoding
AO-73, EO-88, JO-97, AO-91 and AO-92, with no operator intervention
whatsoever. Any number of birds can be added or deleted.
I can let it run overnight and come down and see every bird's TLM perfectly
decoded.
If I chose to, I could have it IQ record every pass and go back and decode
it again later.
The program is absolutely amazing. The fact that it accepted a ridiculous
input value from me without warning me, is to my way of thinking, small
potatoes. :-)
(SDR-Radio Console v 3.x )
5 EL Yagi > 60' Hardline > Duplexer > ARR GasFET > Funcube Pro+ SDR >
SDRConsole v3
Rotor control by SDRC > PSTrotator
15 deg uptilt yagi (5 EL on 2m, 8 EL on 70cm, interlaced, common feedpoint)
Anyone using an SDR that has not used SDRC for controlling it, for
satellite work, has no idea how enriching an SDR setup with good software
can be.
73, N0AN
Hasan
On Sat, Aug 29, 2020 at 12:52 PM Bruce Perens <bruce@??????.???> wrote:
> It's a software bug when the software quietly accepts an impossible
> parameter.
>
> On Sat, Aug 29, 2020, 6:17 AM Hasan N0AN via AMSAT-BB <amsat-bb@?????.???>
> wrote:
>
>> 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
>> _______________________________________________
>> 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: Sat, 29 Aug 2020 18:27:46 +0000
From: Gary <gary_mayfield@???????.???>
To: "AMSAT-BB@?????.???? <AMSAT-BB@?????.???>
Subject: [amsat-bb] FW: G5400 rotator position pot.
Message-ID:
<CH2PR13MB386406BBE0D417256C3317428A530@?????????????.????????.????.???????.??
?>
Content-Type: text/plain; charset="us-ascii"
I was unable to reply directly.
-----Original Message-----
From: Gary
Sent: Saturday, August 29, 2020 11:43 AM
To: Tom Lubbers K8TL <k8tl@?????????.???>
Subject: RE: [amsat-bb] G5400 rotator position pot.
Tom,
I hate emails that don't answer the questioned asked, but find myself doing
it anyway. When I had a 5400 I was able to repair the pot. There used to be
a wire that twisted as the pot turned. This wire liked to fail from repeated
twisting. You may want to try replacing it.
73,
Gary kk0sd
-----Original Message-----
From: AMSAT-BB <amsat-bb-bounces@?????.???> On Behalf Of Tom Lubbers K8TL
via AMSAT-BB
Sent: Saturday, August 29, 2020 11:09 AM
To: AMSAT BB <amsat-bb@?????.???>
Subject: [amsat-bb] G5400 rotator position pot.
Anyone know a source or a replacement pot for the Yaesu G5400 azimuth
rotor. That's the 500 ohm pot that measures the position.
Tom K8TL
_______________________________________________
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
------------------------------
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 357
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