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CX2SA > SATDIG 19.07.20 20:24l 604 Lines 21183 Bytes #999 (0) @ WW
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Subj: AMSAT-BB-digest V15 279
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Sent: 200719/1820Z @:CX2SA.SAL.URY.SOAM #:35273 [Salto] FBB7.00e $:AMSATBB15279
From: CX2SA@CX2SA.SAL.URY.SOAM
To : SATDIG@WW
Today's Topics:
1. Amsat - SOTA (Stephen DeVience)
2. AMSAT board election controversy (Robert McGwier)
3. What? (Clint Bradford)
4. Re: AMSAT board election controversy (Fernando Ramirez)
5. AMSAT board election controversy (Clint Bradford)
6. Re: Amsat - SOTA (Ciemon Dunville)
7. Re: AMSAT: RFI from LED bulbs? (Phil Karn)
8. Re: AMSAT: RFI from LED bulbs? (Robert Bruninga)
9. Amsat - SOTA (Michael Tondee)
10. Election Thoughts (Robert MacHale)
11. Recommendation for project website (Leffke, Zachary)
12. Re: Recommendation for project website (lu9cbl@?????.????
----------------------------------------------------------------------
Message: 1
Date: Sat, 18 Jul 2020 19:46:51 -0500
From: Stephen DeVience <sjdevience@?????.???>
To: amsat-bb@?????.???
Subject: [amsat-bb] Amsat - SOTA
Message-ID:
<CAMPfQQB30Of4Tt5zE3Cv5godD=37=HfJEnAtK-XymnC1SRS_uQ@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Hi Oscar,
Lilacsat-2 has not been on the last few days, so it's not a problem on your
end. Its schedule is irregular, and it's usually on for 3-4 days then off
for a few.
If you don't want to buy an Arrow, there are a number of designs online for
crossed or dual band yagis you can make yourself. They won't be as
convenient for SOTA, but work great at home. I've had success using PVC and
copper tubing and I've also seen nice ones made with light wood and stiff
wire.
-Stephen, N8URE
------------------------------
Message: 2
Date: Sat, 18 Jul 2020 20:25:10 -0500
From: Robert McGwier <rwmcgwier@?????.???>
To: amsat bb <amsat-bb@?????.???>
Cc: Brennan Price <brennanprice@???????.???>
Subject: [amsat-bb] AMSAT board election controversy
Message-ID:
<CA+K5gzeGmRPCmc2QPoODeCDJsp-0maf2xTLx0T-PT-tmN_WLKw@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
My statement on the board election:
https://n4hy.blogspot.com/2020/07/amsat-bod-election-controversy.html
--
Bob McGwier
Founder, Federated Wireless, Inc
Founder and Technical Advisor, HawkEye 360, Inc
Adjunct Professor Virginia Tech
Former Chief Scientist: The Ted and Karyn Hume Center for National
Security and Technology
Senior Member IEEE, Facebook: N4HYBob, ARS: N4HY
------------------------------
Message: 3
Date: Sat, 18 Jul 2020 19:11:49 -0700
From: Clint Bradford <clintbradford@???.???>
To: amsat BB <amsat-bb@?????.???>
Subject: [amsat-bb] What?
Message-ID: <252C1F3A-2964-4149-875E-314F03AA25AD@???.???>
Content-Type: text/plain; charset=utf-8
MICHAEL>m.. ome people who do volunteer or charity work for an organization
or make
contributions do so anonymously and without much fanfare ?
What? People are griping about AMSAT Board devisions made secretly ?
How many ways do toy want it?
Someone running for a board decision whose resume includes NO volunteer with
for AMSAT?
Go ahead. Promote mediocrity from someone who wrote -
"I make no bones that I feel that the majority of the [AMSAT-NA] BOD are
doing a true
disservice to AMSAT. That's why we have elections ... I was elated with the
outcome of
the last election. It went just as planned :) I was happy to draw votes
away from other
incumbents during the last election.?
?Blind Faith? was an English music supergroup featuring Clapton, Winwood,
Ginger Baker and Greecg.
To you, ?Blind Faith? is the support of someone who has performed NO
service to AMSAT-NA.
Clint Bradford K6LCS
------------------------------
Message: 4
Date: Sat, 18 Jul 2020 19:20:10 -0700
From: Fernando Ramirez <framirezferrer@?????.???>
To: AMSAT -BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] AMSAT board election controversy
Message-ID:
<CAGHXx8hPsN9OzPOXA6YPYL2phicnWdELZq7K+nuEVG0A9PgMxQ@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Bob,
Thanks for the letting us know your thoughts, although we all know of
Brennan's good moral character, reputation and fairness. I'm sure the whole
GM and all candidates running for office feel the same way.
73
Fernando KF7R
On Sat, Jul 18, 2020, 6:41 PM Robert McGwier via AMSAT-BB <
amsat-bb@?????.???> wrote:
> My statement on the board election:
>
> https://n4hy.blogspot.com/2020/07/amsat-bod-election-controversy.html
>
> --
> Bob McGwier
> Founder, Federated Wireless, Inc
> Founder and Technical Advisor, HawkEye 360, Inc
> Adjunct Professor Virginia Tech
> Former Chief Scientist: The Ted and Karyn Hume Center for National
> Security and Technology
> Senior Member IEEE, Facebook: N4HYBob, ARS: N4HY
> _______________________________________________
> 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, 18 Jul 2020 19:21:48 -0700
From: Clint Bradford <clintbradford@???.???>
To: amsat BB <amsat-bb@?????.???>
Subject: [amsat-bb] AMSAT board election controversy
Message-ID: <0AB847AC-01B7-4748-8DD2-394EF0543B64@???.???>
Content-Type: text/plain; charset=us-ascii
Thank you, Bob, for your honest statement.
Clint Bradford K6LCS
------------------------------
Message: 6
Date: Sun, 19 Jul 2020 09:34:20 +0100
From: Ciemon Dunville <ciemon@?????.???>
To: Oscar Acton <murtonminer@?????.???>
Cc: amsat-bb@?????.???
Subject: Re: [amsat-bb] Amsat - SOTA
Message-ID:
<CAJVD89m0MB0WYzkMH5jmtxkwrYbL_0-73_Pgt2AXaFKtYQyKFQ@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Hi Oscar,
As Dmitry has said you really do need to direct all of your power at the
satellite, and there are some good homemade options out there which won't
cost a fortune to make. Coupled with that directional antenna you certainly
need to know exactly where the satellite is, and my preferred app is
ISS-Detector Pro which only costs a few pounds but will give you all the
information you need. Add a small magnetic compass to your kit and you'll
know exactly where the sats are.
AO-91 and 92 can be incredibly frustrating over Europe, they're seen as
starter sats and consequently you tend to find far too many people having a
go with poor ground stations (high power and vertical antennas) calling all
over the place and frequently not being able to hear themselves on the
downlink. The best way to use those sats for getting some confidence is to
use the lower passes that sit out over the Atlantic.
PO-101 is a good option, although you'll need to check on their schedule
which they post daily on twitter via the @????????? account.
Good luck,
73
Ciemon
G0TRT
On Sun, 19 Jul 2020 at 00:40, Oscar Acton via AMSAT-BB <amsat-bb@?????.???>
wrote:
> Hello,
>
> I am new to satellite operations. I tried to access Lilacsat2 from a SOTA
> summit today and failed. I did manage to call into AO-92 yesterday and I
> was heard by four stations (but I couldn't receive the downlink).
>
> I was using a 2m dipole to transmit (I am fairly confident I was getting
> into the satellite today) and a 2 element 70cm yagi. Now, I think two
> things went wrong. Firstly, I had no way of directing the antenna
> accurately (I had to guess on the angle and azimuth), and secondly, the
> antenna isn't very powerful, is small and isn't tuned brilliantly (it's a
> 70cm yagi but I get SWR of 2.2 on 70cm).
>
> Firstly, I'm wondering how precise you need to be in directing the beam?
> Can I just hold it in the vague direction that the satellite is approaching
> from, or do I need to work out the headings?
>
> Secondly, I am wondering if my equipment is likely to cut it. As I said,
> yesterday I was told that my signal was getting in - quiet but fully
> readable using my Diamond x30. I don't want to transmit if I can't receive
> in case I talk over someone or cause some interference. I won't be able to
> buy an arrow or a powerful beam antenna for around a year, but I am really
> desperate to work the satellites. Wondering if there are any ways that I
> can use my current equipment in order to work it (whether that be from my
> Home QTH or from a SOTA summit).
>
> I have:
> Yaesu FT-2980 (2m only, limited to 10 watts)
> Anytone 868 (8 watts max)
> Baofeng GT-3TP (8 watts max)
> 2 ele 70cm yagi
> 2m dipole
> diamond x50 collinear at the Home QTH
>
> Hoping for some advice.. I would love to hear stories of you working
> satellites during a Summits On The Air activation, and I would be
> interested to hear of your station setup (and whether you have had success
> with a minimal setup like mine).
>
> Best Regards,
>
> Oscar M7OJA (IO94HT)
> _______________________________________________
> 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: 7
Date: Sun, 19 Jul 2020 04:53:33 -0700
From: Phil Karn <karn@????.???>
To: amsat-bb@?????.???
Subject: Re: [amsat-bb] AMSAT: RFI from LED bulbs?
Message-ID: <d73bcf18-9cc1-c266-4d5d-72dfc8b77da2@????.???>
Content-Type: text/plain; charset=utf-8
On 10/22/18 7:49 AM, Paul Andrews wrote:
>
> I have at least 100 RFI generating LED lights in a box in my basement.
> I removed these from my home and my neighbors. I have exchanged bad
> LED lights for good LED lights. My house is 100% incandescent and
> fluorescent. No LEDs as long as I'm operating EME on 144 and 432 MHz.
> LED noise does not reach up into 1296 MHz.
Can you tell us the makes and models of the offending lights? Maybe show
pictures?
Our house is full of LEDs. While I have noise problems they seem to be
coming from the usual culprits -- nearby switching supplies that I'm
methodically finding and fixing or replacing. I don't seem see much
coming from the lights.
With one exception -- when my wife turned on the lights in a room that
isn't used much at the moment, I saw LF noise on my waterfall. Turns out
that fixture contains a CFL that we haven't replaced with an LED yet. So
our experience has been the opposite of yours, though I must point out
that I've been looking mainly at LF through HF these days. I haven't
done a systematic scan of VHF or UHF.
My understanding is that many LED bulbs use series strings of diodes
with the current limited by the reactance of a capacitor. This seems
like it ought to be quieter than the ~20 kHz AC inverter commonly used
in CFLs.
Phil
------------------------------
Message: 8
Date: Sun, 19 Jul 2020 09:43:42 -0400
From: Robert Bruninga <bruninga@????.???>
To: Phil Karn <karn@????.???>
Cc: amsat bb <amsat-bb@?????.???>
Subject: Re: [amsat-bb] AMSAT: RFI from LED bulbs?
Message-ID:
<CALdCfNJfMFVxXMTzhZaU6iDAk1KNmv0qeN2NmyrgfajopSBBAA@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
My take on LED bulbs is that the conventional ones use a DC switching
supply, but the ones with the new "orange filaments" which are actually
strings of series LEDs that add up to about 90 volts and then I assume a
resistor in the base (no switching?)
I dont think one can use a capacitor reactance to drop voltage reliably
(without additional safety limiting devices) because the drop at 60 Hz
might be fine, but the drop when a 1ms high joule transient comes along,
the energy goes right through the capacitor and dumps all that transient
into the LEDs with no protection...Just my theory, I have not proved it in
practice. I do remember reports in the 60's when people were building
their first LED clocks and using a small capacitor to sync to the 60 Hz
line. That sooner or later, a high-rise transient would wipe out the clock?
just theorizing...
> My understanding is that many LED bulbs use series strings of diodes
> > with the current limited by the reactance of a capacitor. This seems
> > like it ought to be quieter than the ~20 kHz AC inverter commonly used
> > in CFLs.
>
>
------------------------------
Message: 9
Date: Sat, 18 Jul 2020 21:28:33 -0400
From: Michael Tondee <mat_62@???????.???>
To: amsat-bb@?????.???
Subject: [amsat-bb] Amsat - SOTA
Message-ID: <c0e617e8-c6db-5397-1556-31cb1a33d9c9@???????.???>
Content-Type: text/plain; charset=utf-8; format=flowed
Might I suggest you look up the WA5VJB "Cheap Yagi" antennas. An Arrow or an
Elk is certainly a nice solution but there are other ways. I built my base
station antennas based on these designs and many have built handheld
antennas like them as well.
73,
Michael, W4HIJ
Message: 7
Date: Sun, 19 Jul 2020 00:37:57 +0100
From: Oscar Acton<murtonminer@?????.???>
To:amsat-bb@?????.???
Subject: [amsat-bb] Amsat - SOTA
Message-ID:
<CABY8qs+p_2UMi-jbRcX9N+kOr6j=9nPZr3SqrgsKDpVXHhX2hg@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Hello,
I am new to satellite operations. I tried to access Lilacsat2 from a SOTA
summit today and failed. I did manage to call into AO-92 yesterday and I
was heard by four stations (but I couldn't receive the downlink).
I was using a 2m dipole to transmit (I am fairly confident I was getting
into the satellite today) and a 2 element 70cm yagi. Now, I think two
things went wrong. Firstly, I had no way of directing the antenna
accurately (I had to guess on the angle and azimuth), and secondly, the
antenna isn't very powerful, is small and isn't tuned brilliantly (it's a
70cm yagi but I get SWR of 2.2 on 70cm).
Firstly, I'm wondering how precise you need to be in directing the beam?
Can I just hold it in the vague direction that the satellite is approaching
from, or do I need to work out the headings?
Secondly, I am wondering if my equipment is likely to cut it. As I said,
yesterday I was told that my signal was getting in - quiet but fully
readable using my Diamond x30. I don't want to transmit if I can't receive
in case I talk over someone or cause some interference. I won't be able to
buy an arrow or a powerful beam antenna for around a year, but I am really
desperate to work the satellites. Wondering if there are any ways that I
can use my current equipment in order to work it (whether that be from my
Home QTH or from a SOTA summit).
I have:
Yaesu FT-2980 (2m only, limited to 10 watts)
Anytone 868 (8 watts max)
Baofeng GT-3TP (8 watts max)
2 ele 70cm yagi
2m dipole
diamond x50 collinear at the Home QTH
Hoping for some advice.. I would love to hear stories of you working
satellites during a Summits On The Air activation, and I would be
interested to hear of your station setup (and whether you have had success
with a minimal setup like mine).
Best Regards,
Oscar M7OJA (IO94HT)
------------------------------
Message: 10
Date: Sun, 19 Jul 2020 17:43:59 +0000 (UTC)
From: Robert MacHale <robert.machale@?????.???>
To: AMSAT BB <amsat-bb@?????.???>
Subject: [amsat-bb] Election Thoughts
Message-ID: <611280701.3937982.1595180639974@????.?????.???>
Content-Type: text/plain; charset=UTF-8
Board Members should exhibit extreme ownership. Asserting Gender
Discrimination or filing Demand Letters is a form of blame and deflection.
Perhaps the new members were underprepared.
Board Members should spend and hour per month communicating; or more. I hope
the feet draggers are replaced. Declining Board Meetings betrays the trust
of the group - a dereliction of duty.
I still believe the legal expenditures were wise and necessary; the gender
discrimination complaint and demand letter were neither.
I support newer - more energetic - more innovative board members.
Robert MacHale. KE6BLR Ham Radio License.?http://www.aprsat.com/predict
.?http://www.spaceCommunicator.club?
. Supporting Boy Scout Merit Badges in Radio, Robotics, and Space Exploration
Silly Joke:?What did the little mountain say to the bigger mountain? Hi Cliff!
He who dares not offend cannot be honest. -- Thomas Paine
------------------------------
Message: 11
Date: Sun, 19 Jul 2020 18:07:31 +0000
From: "Leffke, Zachary" <zleffke@??.???>
To: "AMSAT-BB@?????.???? <AMSAT-BB@?????.???>
Subject: [amsat-bb] Recommendation for project website
Message-ID:
<MN2PR05MB70370205439F2BD37D45C135DF7A0@?????????????.????????.????.???????.??
?>
Content-Type: text/plain; charset="iso-8859-1"
Hi All,
I was wondering if folks had any recommendations for website services for
hosting simple project pages. I do a lot of little side projects and
occasionally folks ask for more details. I tend to keep things scattered
across multiple media (lots on github), and collecting up everything in a
'useful' way isn't very efficient. I've considered making better use of
github markdown, but I'm not sure thats the best way to go for all projects,
particularly if I want to post a lot of images.
Some examples of the types of 'project' sites that I like and am looking to
start include the following:
https://www.w6pql.com/
http://www.w1ghz.org/
https://destevez.net/
Wordpress seems like it might be a good way to go. For the moment I'm just
looking for something simple where I can 'publish' projects a bit better
than just posting code or KiCAD designs on github. Eventually I might
branch out to this new fangled social media stuff...but for the moment I
just want to get the projects written up and posted.
Any and all recommendations would be welcome. I'm not opposed to pay sites
(mainly to remove annoying ads from the page) as long as the interface is
relatively simple and I like the look and feel of things.
Thanks in advance,
-Zach, KJ4QLP
--
Research Associate
Aerospace & Ocean Systems Lab
Ted & Karyn Hume Center for National Security & Technology
Virginia Polytechnic Institute & State University
Work Phone: 540-231-4174
Cell Phone: 540-808-6305
------------------------------
Message: 12
Date: Sun, 19 Jul 2020 15:12:22 -0300
From: "lu9cbl@?????.???? <lu9cbl@?????.???>
To: amsat-bb@?????.???
Subject: Re: [amsat-bb] Recommendation for project website
Message-ID: <d2f99e59-d90d-d269-079a-bf59edf64106@?????.???>
Content-Type: text/plain; charset=utf-8; format=flowed
Do you check the blog style as blogspot??? do you have it for free with
a gmail account.
73s
Mati LU9CBL (http://lu9cbl.blogspot.com/)
El 19/7/2020 a las 15:07, Leffke, Zachary via AMSAT-BB escribi?:
> Hi All,
> I was wondering if folks had any recommendations for website services for
hosting simple project pages. I do a lot of little side projects and
occasionally folks ask for more details. I tend to keep things scattered
across multiple media (lots on github), and collecting up everything in a
'useful' way isn't very efficient. I've considered making better use of
github markdown, but I'm not sure thats the best way to go for all projects,
particularly if I want to post a lot of images.
>
> Some examples of the types of 'project' sites that I like and am looking
to start include the following:
> https://www.w6pql.com/
> http://www.w1ghz.org/
> https://destevez.net/
>
> Wordpress seems like it might be a good way to go. For the moment I'm
just looking for something simple where I can 'publish' projects a bit
better than just posting code or KiCAD designs on github. Eventually I
might branch out to this new fangled social media stuff...but for the moment
I just want to get the projects written up and posted.
>
> Any and all recommendations would be welcome. I'm not opposed to pay
sites (mainly to remove annoying ads from the page) as long as the interface
is relatively simple and I like the look and feel of things.
>
> Thanks in advance,
> -Zach, KJ4QLP
>
>
> --
>
> Research Associate
>
> Aerospace & Ocean Systems Lab
>
> Ted & Karyn Hume Center for National Security & Technology
>
> Virginia Polytechnic Institute & State University
>
> Work Phone: 540-231-4174
>
> Cell Phone: 540-808-6305
>
> _______________________________________________
> 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
--
El software de antivirus Avast ha analizado este correo electr?nico en busca
de virus.
https://www.avast.com/antivirus
------------------------------
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 279
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