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CX2SA > SATDIG 09.05.17 18:05l 809 Lines 24804 Bytes #999 (0) @ WW
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Subj: AMSAT-BB-digest V12 122
Path: IW8PGT<IZ3LSV<I0OJJ<N6RME<CX2SA
Sent: 170509/1559Z @:CX2SA.SAL.URY.SOAM #:6866 [Salto] FBB7.00e $:AMSATBB12122
From: CX2SA@CX2SA.SAL.URY.SOAM
To : SATDIG@WW
Today's Topics:
1. K3IO email problems (Tom Clark)
2. ITF-2 Operation Announcement: F2D Telemetry Downlink
(?????????????)
3. Icom 9100 data on receive port (shakeel -ur-rehman)
4. Dinner Tickets For Dayton (Martha)
5. Re: [amsat-fox] K3IO email problems (RT)
6. Dowkey microwave 62-110 (Nestor Punales)
7. Re: Dowkey microwave 62-110 (Zach Metzinger)
8. SatPC32 Element update (Paul Baldock)
9. Polyitan-1 (John Mac)
10. Upcoming ARISS Contact Schedule as of 2017-05-09 07:00 UTC
(AJ9N@xxx.xxxx
11. Re: share a room Dayton (Nick Pugh)
12. Re: Polyitan-1 (Pierros Papadeas)
13. Solar RFI? (Robert Bruninga)
14. Re: Solar RFI? (Greg Stahlman)
----------------------------------------------------------------------
Message: 1
Date: Mon, 8 May 2017 04:39:35 -0400
From: Tom Clark <tom.k3io@xxxxx.xxx>
To: AMSAT BoD <bod@xxxxx.xxx>, "senior-officers@xxxxx.xxxx
<senior-officers@xxxxx.xxx>, Rick HamblyW2GPS <rick@xxxxxx.xxx>, Brian
Gaffney <beg@xxxxxxx.xxx>, Brian Gaffney <beg@xxxxxxxxxxxx.xxx>, Jean
Clark <jeanmgclark@xxxxxxx.xxx>, Mollie Palmer
<molliegp11@xxxxx.xxx>, John Glover <jngglover@xxx.xxx>, "'Ma, Chopo
(GSFC-698.0)'" <chopo.ma-1@xxxx.xxx>, 'Ed Himwich'
<Ed.Himwich@xxxx.xxx>, 'Arthut Niell' <aniell@xxxxxxxx.xxx.xxx>, Alan
Whitney <awhitney@xxxxxxxx.xxx.xxx>, Alan Rogers
<aeer@xxxxxxxx.xxx.xxx>, AMSAT/MSS Mission <phase4@xxxxx.xxx>, AMSAT
ASCENT Program <ascent@xxxxx.xxx>, amsat-fox <amsat-fox@xxxx.xxx.xxx>,
Bob McGwier <rwmcgwier@xxxxx.xxx>, Sharon McGwier
<smmcgwier@xxxxx.xxx>, Martha Saragovitz <martha@xxxxx.xxx>, Bdale
Garbee <bdale@xxx.xxx>, amsat-bb@xxxxx.xxxx gerrie Checkon
<gcheckon@xxxxx.xxx>, Kate Hutton <k6htn@xxxx.xxx>
Cc: Tom Clark <tom.k3io@xxxxx.xxx>
Subject: [amsat-bb] K3IO email problems
Message-ID: <cdbaafe9-f925-770e-822d-fb42bbea5a96@xxxxx.xxx>
Content-Type: text/plain; charset=utf-8; format=flowed
Sometime in April, my old "K3IO@xxxxxxx.xxxx email address went extinct
due to Verizon making a unilateral decision to get out of the email
business. They had an ill-conceived (and IMHO quite user hostle) scheme
to hand over all their responsibilities to AOL.COM. As a result, all my
old Verizon email archives were lost and I am no longer getting any mail
thru the Verizon hose.
As of immediately, use "TOM.K3IO@xxxxx.xxx <mailto:tom.k3io@xxxxx.xxx>"
for any future mail, and also please resend anything of importance to me
from April.
73 de Tom, K3IO
------------------------------
Message: 2
Date: Mon, 8 May 2017 19:45:05 +0900
From: ????????????? <yui.tsukuba@xxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] ITF-2 Operation Announcement: F2D Telemetry
Downlink
Message-ID:
<CAFHw2aaPM__LPxTbpkCmfrscOgdB1zRjgFkRD3t2n13QOw0sqA@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
All,
We?ll announce about ITF-2 operation.
F2D telemetry test which was announced 5/4(UTC), has been done. So, we will
plan F2D telemetry downlink around the world in several days as below.
Content: F2D telemetry downlink
Date: May. 8th, 17:30 ~ May. 14th, 24:00(UTC)
In the period of this test, F2D telemetry can be received in the passes
which is in the period of system A. It is now difficult to predict which
communication system is switched, A or B, due to the problem of some data
missing in ITF-2 memory. So, the plan may be changed. Please note this.
Reception reports can be submitted at:
https://operationitf-2.blogspot.jp/p/blog-page_58.html
Looking forward to your reception reports!!
Atsushi Yasuda, JI1OEH
University of Tsukuba Satellite project
------------------------------
Message: 3
Date: Mon, 8 May 2017 15:14:46 +0000 (UTC)
From: shakeel -ur-rehman <shakeelj2k@xxxxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Icom 9100 data on receive port
Message-ID: <2110495735.6641506.1494256486040@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
Hi All
I am ICOM 9100 user and I have read that it has many control commands which
can be used command icom 9100. How to execute that control commands. can I
execute it through windows hyperterminal.
I have tried to run local radio AM band on icom 9100. I am interested to
read the data on receive port of the icom 9100 and put it in my text file.
anyone can help the steps which i need to accompish thi task.
I have connected Icom 9100 through USB cable. and com3 and com4 are being
shown in the control panel of my windows system. any help will be
appreciated please.
Regards
shakeel
------------------------------
Message: 4
Date: Mon, 8 May 2017 11:21:32 -0400
From: Martha <martha@xxxxx.xxx>
To: AMSAT BB <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Dinner Tickets For Dayton
Message-ID:
<CAPk0USxQXwrwV9kYeNakn5p5HpTwAfkQ56cvOAJj66d-c2PqeQ@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
If you are planning to attend the AMSAT-TAPR dinner in Dayton, you must
purchase your tickets online at the AMSAT store (amsat.org) . We will not
be selling tickets at Dayton
--
73- Martha
------------------------------
Message: 5
Date: Mon, 8 May 2017 11:57:07 -0400
From: RT <rtassi@xxxxxxxxxxxx.xxx>
To: tom.k3io@xxxxx.xxxx bod@xxxxx.xxxx senior-officers@xxxxx.xxxx
rick@xxxxxx.xxxx beg@xxxxxxx.xxxx beg@xxxxxxxxxxxx.xxxx
jeanmgclark@xxxxxxx.xxxx molliegp11@xxxxx.xxxx jngglover@xxx.xxxx
chopo.ma-1@xxxx.xxxx Ed.Himwich@xxxx.xxxx aniell@xxxxxxxx.xxx.xxxx
awhitney@xxxxxxxx.xxx.xxxx aeer@xxxxxxxx.xxx.xxxx phase4@xxxxx.xxxx
ascent@xxxxx.xxxx amsat-fox@xxxx.xxx.xxxx rwmcgwier@xxxxx.xxxx
smmcgwier@xxxxx.xxxx martha@xxxxx.xxxx bdale@xxx.xxxx
amsat-bb@xxxxx.xxxx gcheckon@xxxxx.xxxx k6htn@xxxx.xxx
Subject: Re: [amsat-bb] [amsat-fox] K3IO email problems
Message-ID: <15be8c74deb-5a05-28361@xxxxxxxxxx.xxxx.xxx.xxx>
Content-Type: text/plain; charset=utf-8
Tom,
And FYI to all,
Verizon had been sending out notices of their decision to stop email, they
are doing it region by region, some may have not seen the change yet.? FIOS
here has not done it yet.
I believe Verizon is the parent of both verizon and AOL, no sense doing
verizon email when aol was doing it
I did the DSL AOL migration,? nothing was lost, all folders transferred,? it
was quick and no problems encountered.??? Nothing at all is changed.? Also
you keep your verzon email address,? I even use my legacy bellatlantic.???
But you need to do it before the cut off.
It may be too late Tom, but suggest contact Verizon support, if not done
already,? they may still have your folders stored somewhere..?
73 ES GL
Ron N3AEA
-----Original Message-----
From: Tom Clark <tom.k3io@xxxxx.xxx>
To: AMSAT BoD <bod@xxxxx.xxx>; senior-officers <senior-officers@xxxxx.xxx>;
Rick HamblyW2GPS <rick@xxxxxx.xxx>; Brian Gaffney <beg@xxxxxxx.xxx>; Brian
Gaffney <beg@xxxxxxxxxxxx.xxx>; Jean Clark <jeanmgclark@xxxxxxx.xxx>; Mollie
Palmer <molliegp11@xxxxx.xxx>; John Glover <jngglover@xxx.xxx>; 'Ma, Chopo
(GSFC-698.0)' (GSFC-698.0)' <chopo.ma-1@xxxx.xxx>; 'Ed Himwich'
<Ed.Himwich@xxxx.xxx>; 'Arthut Niell' <aniell@xxxxxxxx.xxx.xxx>; Alan
Whitney <awhitney@xxxxxxxx.xxx.xxx>; Alan Rogers <aeer@xxxxxxxx.xxx.xxx>;
AMSAT/MSS Mission <phase4@xxxxx.xxx>; AMSAT ASCENT Program
<ascent@xxxxx.xxx>; amsat-fox <amsat-fox@xxxx.xxx.xxx>; Bob McGwier
<rwmcgwier@xxxxx.xxx>; Sharon McGwier <smmcgwier@xxxxx.xxx>; Martha
Saragovitz <martha@xxxxx.xxx>; Bdale Garbee <bdale@xxx.xxx>; amsat-bb
<amsat-bb@xxxxx.xxx>; gerrie Checkon <gcheckon@xxxxx.xxx>; Kate Hutton
<k6htn@xxxx.xxx>
Cc: Tom Clark <tom.k3io@xxxxx.xxx>
Sent: Mon, May 8, 2017 4:40 am
Subject: [amsat-fox] K3IO email problems
Sometime in April, my old "K3IO@xxxxxxx.xxxx email address went extinct due
to Verizon making a unilateral decision to get out of the email business.
They had an ill-conceived (and IMHO quite user hostle) scheme to hand over
all their responsibilities to AOL.COM. As a result, all my old Verizon email
archives were lost and I am no longer getting any mail thru the Verizon hose.
As of immediately, use "TOM.K3IO@xxxxx.xxxx for any future mail, and also
please resend anything of importance to me from April.
73 de Tom, K3IO
------------------------------
Message: 6
Date: Mon, 8 May 2017 11:51:16 -0700
From: Nestor Punales <kd2akp@xxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Dowkey microwave 62-110
Message-ID:
<CAAqiCg7URt2OgOUbOTJEjBDEgJA3nEEM+9asAAVOmjPCMEOLkg@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
Hello to all,
I am thinking on using the Dowkey Microwave 62-110 relay switch on my 2
meter crossed elements yagi to switch polarization, I was wondering if
anyone else here have done something similar.
Any input would be much appreciated!
Nestor K6JTT DM12kr
------------------------------
Message: 7
Date: Mon, 8 May 2017 13:57:48 -0500
From: Zach Metzinger <zmetzing@xxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] Dowkey microwave 62-110
Message-ID: <8c108f29-3f3f-837e-5472-658ec2be5e02@xxxxx.xxx>
Content-Type: text/plain; charset=windows-1252
On 05/08/17 13:51, Nestor Punales wrote:
> Hello to all,
>
> I am thinking on using the Dowkey Microwave 62-110 relay switch on my 2
> meter crossed elements yagi to switch polarization, I was wondering if
> anyone else here have done something similar.
>
> Any input would be much appreciated!
Hello Nestor,
You might try going this route:
http://www.w6pql.com/using_inexpensive_relays.htm
--- Zach
N0ZGO
------------------------------
Message: 8
Date: Mon, 08 May 2017 16:42:39 -0700
From: Paul Baldock <pbaldock@xxxxxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] SatPC32 Element update
Message-ID:
<20170508234252.C241E677FF@xxxxxxxx.xxxx.xx.xxxxxxxxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"; format=flowed
Does SatPC32 have a way of automatically updating elements to a
schedule, such as every day?
Thanks
- Paul KW7Y
------------------------------
Message: 9
Date: Tue, 9 May 2017 11:15:39 +1000
From: John Mac <vk2fak@xxxxx.xxx>
To: AMSAT-BB@xxxxx.xxx
Subject: [amsat-bb] Polyitan-1
Message-ID:
<CANiF7qMKpukm7aUiXwpEtz2CF1XwsJBZ9GyCRAC18shG3pkwEQ@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
Hi all... Just had a pass of Polyitan-1 and did nor see any transmission,
is this Sat operational ?, it has been in recent days.
John
------------------------------
Message: 10
Date: Tue, 9 May 2017 03:48:34 -0400
From: AJ9N@xxx.xxx
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Upcoming ARISS Contact Schedule as of 2017-05-09
07:00 UTC
Message-ID: <109aca.10345508.4642ce52@xxx.xxx>
Content-Type: text/plain; charset="ISO-8859-1"
Upcoming ARISS Contact Schedule as of 2017-05-09 07:00 UTC
Quick list of scheduled contacts and events:
Ecole College Park School, Saskatoon, Saskatchewan, Canada, telebridge via
W6SRJ
The ISS callsign is presently scheduled to be NA1SS
The scheduled astronaut is Jack Fisher K2FSH
Contact was successful: Mon 2017-05-08 18:19:40 UTC 59 deg (***)
Virginia Reinhardt Elementary School, Rockwall, TX, telebridge via W6SRJ
(***)
The ISS callsign is presently scheduled to be NA1SS
The scheduled astronaut is Thomas Pesquet KG5FYG (***)
Contact is a go for: Mon 2017-05-15 15:28:09 UTC 71 deg (***)
****************************************************************************
**
ARISS is always glad to receive listener reports for the above contacts.
ARISS thanks everyone in advance for their assistance. Feel free to send
your reports to aj9n@xxxxx.xxx or aj9n@xxx.xxx.
****************************************************************************
***
ARISS is always glad to receive listener reports for the above contacts.
ARISS thanks everyone in advance for their assistance. Feel free to send
your reports to aj9n@xxxxx.xxx or aj9n@xxx.xxx.
Listen for the ISS on the downlink of 145.8? MHz.
*****************************************************
**************************
All ARISS contacts are made via the Kenwood radio unless otherwise noted.
****************************************************************************
***
Several of you have sent me emails asking about the RAC ARISS website and
not being able to get in. That has now been changed to
http://www.ariss.org/
Note that there are links to other ARISS websites from this site.
****************************************************************************
Looking for something new to do? How about receiving DATV from the ISS?
If interested, then please go to the ARISS-EU website for complete
details. Look for the buttons indicating Ham Video.
http://www.ariss-eu.org/
If you need some assistance, ARISS mentor Kerry N6IZW, might be able to
provide some insight. Contact Kerry at kbanke@xxxxxxxxx.xxx
****************************************************************************
ARISS congratulations the following mentors who have now mentored over 100
schools:
Satoshi 7M3TJZ with 123
Gaston ON4WF with 123
Francesco IK?WGF with 119
****************************************************************************
The webpages listed below were all reviewed for accuracy. Out of date
webpages were removed and new ones have been added. If there are additi
onal
ARISS websites I need to know about, please let me know.
Note, all times are approximate. It is recommended that you do your own
orbital prediction or start listening about 10 minutes before the listed
time.
All dates and times listed follow International Standard ISO 8601 date and
time format YYYY-MM-DD HH:MM:SS
The complete schedule page has been updated as of 2017-05-09 07:00 UTC.
(***)
Here you will find a listing of all scheduled school contacts, and
questions, other ISS related websites, IRLP and Echolink websites, and
instructions for any contact that may be streamed live.
http://www.amsat.org/amsat/ariss/news/arissnews.rtf
http://www.amsat.org/amsat/ariss/news/arissnews.txt
Total number of ARISS ISS to earth school events is 1138. (***)
Each school counts as 1 event.
Total number of ARISS ISS to earth school contacts is 1097. (***)
Each contact may have multiple schools sharing the same time slot.
Total number of ARISS supported terrestrial contacts is 47.
A complete year by year breakdown of the contacts may be found in the
file.
http://www.amsat.org/amsat/ariss/news/arissnews.rtf
Please feel free to contact me if more detailed statistics are needed.
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
The following US states and entities have never had an ARISS contact:
Arkansas, Delaware, South Dakota, Wyoming, American Samoa, Guam, Northern
Marianas Islands, and the Virgin Islands.
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
QSL information may be found at:
http://www.ariss.org/qsl-cards.html
ISS callsigns: DP?ISS, IR?ISS, NA1SS, OR4ISS, RS?ISS
****************************************************************************
The successful school list has been updated as of 2017-05-09 07:00 UTC.
(***)
http://www.amsat.org/amsat/ariss/news/Successful_ARISS_schools.rtf
Frequency chart for packet, voice, and crossband repeater modes showing
Doppler correction as of 2005-07-29 04:00 UTC
http://www.amsat.org/amsat/ariss/news/ISS_frequencies_and_Doppler_correction
.rtf
Listing of ARISS related magazine articles as of 2006-07-10 03:30 UTC.
http://www.amsat.org/amsat/ariss/news/ARISS_magazine_articles.rtf
Check out the Zoho reports of the ARISS contacts
https://reports.zoho.com/ZDBDataSheetView.cc?DBID=412218000000020415
****************************************************************************
Exp. 50 on orbit
Peggy Whitson
Thomas Pesquet KG5FYG
Oleg Novitskiy
Exp. 51 on orbit (***)
Jack Fisher K2FSH
Fyodor Yurchikhin RN3FI
****************************************************************************
73,
Charlie Sufana AJ9N
One of the ARISS operation team mentors
------------------------------
Message: 11
Date: Tue, 9 May 2017 04:29:50 -0500
From: "Nick Pugh" <quadpugh@xxxxxxxxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] share a room Dayton
Message-ID: <00c901d2c8a6$d06b6070$71422150$@xxxxxxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"
.
Hello Amsat-ers
I got the last reservation for 2 queen beds at the Fairborn motel for
Saturday night and would like to split the room expenses. Please reply if
you are interested
Thanks
nick
Office 337 593 8700
Cell 337 258 2527
Helping UL become a world Class Engineering and Educational School
_______________________________________________
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: Tue, 9 May 2017 11:28:59 +0300
From: Pierros Papadeas <pierros@xxxxxxxx.xx>
To: John Mac <vk2fak@xxxxx.xxx>
Cc: AMSAT-BB@xxxxx.xxx
Subject: Re: [amsat-bb] Polyitan-1
Message-ID:
<CAJWHm0ydfB3t7AxSyJOW__WEQfqiFEC46fOhVPzy7BbTmPfhQg@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
Last time we had POLYITAN-1 on SatNOGS was 2nd of May:
https://network.satnogs.org/observations/?bad=1&unvetted=1&good=1&norad=40042
We added 3 observations for today to check for sure.
~pierros
On Tue, May 9, 2017 at 4:15 AM, John Mac <vk2fak@xxxxx.xxx> wrote:
> Hi all... Just had a pass of Polyitan-1 and did nor see any transmission,
> is this Sat operational ?, it has been in recent days.
>
>
> John
> _______________________________________________
> 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
--
Pierros Papadeas
http://pierros.papadeas.gr
pierros@xxxxxxxx.xx
------------------------------
Message: 13
Date: Tue, 9 May 2017 10:30:07 -0400
From: Robert Bruninga <bruninga@xxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Solar RFI?
Message-ID: <b7ea5930a62bc4a03c2ef878ef87597f@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
RFI from Solar?
With solar now cheaper than coal, solar is exploding in to neighborhoods
with favorable progressive policies.
But, they can produce lots of RFI with significant impact on Hams operating
HF.
With 16 kW of solar on my roof, I feel in a good position to be proactive
in documenting the overall impact of solar on HF operations.
We?ve seen QST articles on the very high RFI levels from solar systems that
use microinverters and optimizers located at every single panel on the roof
which are a nightmare to filter, while string inverters are easy to filter
at the one location on the ground.
My thoughts are to come up with a standard test that Hams near solar
installations can do to document any RFI. Although none of us will have
standard calibrated antennas or receivers, we can at least make comparative
measurements to background noise levels. Either with the array on and off
or between day and night at a fixed distance from the array.
I believe the part 15 limits for unintentional radiators is for 100 uV/m at
a distance of 30 meters (100 feet). On a 1 meter portable antenna I
calculate that is equivalent to 36uV or within a dB of S9. That?s a lot of
noise (if I did that right)?
And if it was a full size dipole say on 20m, then the allowable noise would
be 20 over S9 (again, if I did that right) Wow.
If anyone wants to submit measurements Ill collect them.
My suggestion is to take a portable HF rig (FT-817 or TH-F6 or TH-D74) and
an approximate 1m whip antenna and report at 100 feet from the array, the S
readings with the array on and with it off (or day vs night).
I welcome more expertise in this area. Although this is not an AMSAT
issue, this is the only email group I?m on that might have people with
those easy portable HF radios.
Bob, WB4APR
------------------------------
Message: 14
Date: Tue, 9 May 2017 08:49:37 -0700
From: "Greg Stahlman" <kj6ko@xxxxxxxxx.xxx>
To: "'Robert Bruninga'" <bruninga@xxxx.xxx>, <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] Solar RFI?
Message-ID: <00a101d2c8db$ddb25290$9916f7b0$@xxx>
Content-Type: text/plain; charset="utf-8"
Problem is, solar MFGR?s are exempt from Part-15, BUT, the operators are
not! At least that?s the way I read it.
100uV/M is a LOT! Especially when trying to run weak signal stuff! My
neighbor?s is about 18db over night time noise floor!
I heard good things about ?Micro Inverters? vs the more common ?Optimizers?,
which are basically a DC-DC converter on the back of the panel, and they
were right! I had a 7KW system put on my roof but demanded they use
Microinverters and I hear NOTHING!! Very quiet!
The Optimizers are a HUGE nuisance from 80M through 6M and even on 2M.
Regardless if they fall under the 100uV/M, the main rule of Part 15 states
simply ??must not cause harmful interference, even if it results in the
improper operation of the interfering device.?
73
From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of Robert
Bruninga
Sent: Tuesday, May 09, 2017 7:30 AM
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Solar RFI?
RFI from Solar?
With solar now cheaper than coal, solar is exploding in to neighborhoods
with favorable progressive policies.
But, they can produce lots of RFI with significant impact on Hams operating
HF.
With 16 kW of solar on my roof, I feel in a good position to be proactive
in documenting the overall impact of solar on HF operations.
We?ve seen QST articles on the very high RFI levels from solar systems that
use microinverters and optimizers located at every single panel on the roof
which are a nightmare to filter, while string inverters are easy to filter
at the one location on the ground.
My thoughts are to come up with a standard test that Hams near solar
installations can do to document any RFI. Although none of us will have
standard calibrated antennas or receivers, we can at least make comparative
measurements to background noise levels. Either with the array on and off
or between day and night at a fixed distance from the array.
I believe the part 15 limits for unintentional radiators is for 100 uV/m at
a distance of 30 meters (100 feet). On a 1 meter portable antenna I
calculate that is equivalent to 36uV or within a dB of S9. That?s a lot of
noise (if I did that right)?
And if it was a full size dipole say on 20m, then the allowable noise would
be 20 over S9 (again, if I did that right) Wow.
If anyone wants to submit measurements Ill collect them.
My suggestion is to take a portable HF rig (FT-817 or TH-F6 or TH-D74) and
an approximate 1m whip antenna and report at 100 feet from the array, the S
readings with the array on and with it off (or day vs night).
I welcome more expertise in this area. Although this is not an AMSAT
issue, this is the only email group I?m on that might have people with
those easy portable HF radios.
Bob, WB4APR
_______________________________________________
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
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engine 15387 (20170509) __________
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------------------------------
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 12, Issue 122
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