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CX2SA > SATDIG 15.03.20 20:30l 780 Lines 27899 Bytes #999 (0) @ WW
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Sent: 200315/1823Z @:CX2SA.SAL.URY.SOAM #:26768 [Salto] FBB7.00e $:AMSATBB1581
From: CX2SA@CX2SA.SAL.URY.SOAM
To : SATDIG@WW
Today's Topics:
1. Re: Ni-Cd's on Satellites and MASS advantage! (Jim White)
2. adding pics and nicads in space (Mr B r a d)
3. Knwd TH-D74A question (Steve Kristoff)
4. Re: Knwd TH-D74A question (Steve Kristoff)
5. Re: Knwd TH-D74A question (JoAnne K9JKM)
6. ANS-075 AMSAT News Service Weekly Bulletins (Paul Stoetzer)
7. Re: Ni-Cd's on Satellites and MASS advantage! (Jerry Buxton)
8. Re: adding pics and nicads in space (John Brier)
9. KENWOOD TH-D74A (Gerald Witalec)
10. Re: KENWOOD TH-D74A (JoAnne K9JKM)
11. High Power and Rudeness (Brad Smith)
----------------------------------------------------------------------
Message: 1
Date: Sat, 14 Mar 2020 14:53:01 -0600
From: Jim White <jim@?????????????????.???>
To: amsat-bb@?????.???
Subject: Re: [amsat-bb] Ni-Cd's on Satellites and MASS advantage!
Message-ID:
<a75338d9-6c69-bfa7-a916-54ec47f93134@?????????????????.???>
Content-Type: text/plain; charset=utf-8; format=flowed
Another data point.
Falconsat 3 has F size Sanyo NiCads that have survived several instances
of being pulled down to less than 1V causing a CPU reset during more
than 12 years on orbit.? Last time I looked at the telemetry the peak
charged voltage was less than .1V / cell below the original voltage.?
They just keep taking abuse and going, going.
Jim
On 3/14/2020 10:53 AM, Robert Bruninga via AMSAT-BB wrote:
> We have used NiCds on all of my 4 satellites with no battery problems.
>
> They are robust, and survive all student mistakes and require no Battery
> management system when paired with a matching solar panel design. IE, as
> th batteries approach full charge is the same point where the solar panel
> voltage maxes. Also NiCd's can be safely overcharged at 10% indefinitely
> with no concern. (you only get an hour in the sun and then 35 minutes
> eclipse)...
>
> Yes, they are twice as heavy as Lithium, but the advantages FAR outweigh
> the criticality of Lithium concerns and complexity of the BMS and total
> failure on overcharge or undercharge.
>
> And MASS is an advantage! PSAT and BRICSAT-1 are identical 1.5U cubesats
> launched at the same time in May 2015. But PSAT with big C cell NiCd's was
> made heavier with lead ballast to 2.3kg. BRICSAT (1.7 kg) with lightweight
> Lithiums has already decayed in November. PSAT is predicted to last 2 more
> years! Same thing for identical RAFT and MARSCOM cubesats back in 2006.
> RAFT was ballasted up and lasted TWICE as long as MARSCOM.
>
> For comm satellites, there is no reason to come in under mass. Always
> ballast up to the maximum the launcher will allow!
>
> Bob, WB4APR
>
> On Fri, Mar 13, 2020 at 5:58 PM Pedro Converso via AMSAT-BB <
> amsat-bb@?????.???> wrote:
>
>> LO-19 (aka LUSAT) after 30 years in space is emitting day and night a
>> strong carrier.
>>
>> What is amazing that after over 2 millions charge/discharge cycles its
>> vintage NI-CD batteries are still able to receive and hold charge.
>>
>> It is known that Lithium based batteries usually halve charge capacity
>> after +/- 400 cycles, probably you noticed that on your portable
>> device. https://batteryuniversity.com/_img/content/lithium2.jpg
>>
>> This is just a comment for future satellite plans if long duration is
>> part of the objective.
>>
>> 73, lu7abf, Pedro
>> _______________________________________________
>> 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: 2
Date: Sat, 14 Mar 2020 21:28:58 +0000 (UTC)
From: Mr B r a d <jhill_81@?????.???>
To: amsat-bb@?????.???
Subject: [amsat-bb] adding pics and nicads in space
Message-ID: <259401620.729563.1584221338753@????.?????.???>
Content-Type: text/plain; charset=UTF-8
3rd party pics?Imgur?test
and perhaps nicads in space don't get the gunk build up on the vent that we
see on failed units on earth??has anyone seen the gunk on a failed nicad
from space ?
|
|
|
| | |
|
|
|
| |
Imgur
Imgur
working LEO Ham Sats with a 5 watt H/T
|
|
|
photo from a 20m sstv qso
ko6kL
------------------------------
Message: 3
Date: Sat, 14 Mar 2020 17:37:08 -0400
From: "Steve Kristoff" <skristof@???????.???>
To: amsat-bb@?????.???
Subject: [amsat-bb] Knwd TH-D74A question
Message-ID: <2bb6bd4921799d181fc3f5f888874bd0@???????.???>
Content-Type: text/plain; charset=UTF-8
I just got a Kenwood TH-D74A. I'm trying to enter my callsign so I can do
APRS. I got the AI9IN part, but how do I enter the - (dash) that goes before
the SSID? I can't find the instructions for that anywhere.
(I admit to finding the programming of this radio to be a little
overwhelming. I can't even get past entering my callsign.)
Steve AI9IN
?
------------------------------
Message: 4
Date: Sat, 14 Mar 2020 17:50:13 -0400
From: "Steve Kristoff" <skristof@???????.???>
To: amsat-bb@?????.???
Subject: Re: [amsat-bb] Knwd TH-D74A question
Message-ID: <b240ec9a4c34212a3c4b502b2358a9e2@???????.???>
Content-Type: text/plain; charset=UTF-8
Never mind. I figured it out. (Still a little overwhelming.)
Steve AI9IN
?
----- Original Message -----
From: Steve Kristoff via AMSAT-BB (amsat-bb@?????.????
Date: 03/14/20 17:38
To: amsat-bb@?????.???
Subject: [amsat-bb] Knwd TH-D74A question
I just got a Kenwood TH-D74A. I'm trying to enter my callsign so I can do
APRS. I got the AI9IN part, but how do I enter the - (dash) that goes before
the SSID? I can't find the instructions for that anywhere.
(I admit to finding the programming of this radio to be a little
overwhelming. I can't even get past entering my callsign.)
Steve AI9IN
_______________________________________________
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, 14 Mar 2020 18:26:17 -0500
From: JoAnne K9JKM <k9jkm@???????.???>
To: amsat-bb@?????.???
Subject: Re: [amsat-bb] Knwd TH-D74A question
Message-ID: <5E6D6819.5020206@???????.???>
Content-Type: text/plain; charset=utf-8; format=flowed
Hello Steve,
> I just got a Kenwood TH-D74A ...
There are a couple of Kenwood TH-D74A articles posted at:
https://www.amsat.org/station-and-operating-hints/
--
73 de JoAnne K9JKM
k9jkm@?????.???
------------------------------
Message: 6
Date: Sat, 14 Mar 2020 17:08:04 -0700
From: Paul Stoetzer <n8hm@????.???>
To: ans@?????.???? AMSAT BB <amsat-bb@?????.???>
Subject: [amsat-bb] ANS-075 AMSAT News Service Weekly Bulletins
Message-ID:
<CABzOSOq5Vubfp+G1MRAcPc=n05iakpGNJ6HTZEDgCqFZSMoayg@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
AMSAT NEWS SERVICE
ANS-075
The AMSAT News Service bulletins are a free, weekly news and infor-
mation service of AMSAT, The Radio Amateur Satellite Corporation. ANS
publishes news related to Amateur Radio in Space including reports on
the activities of a worldwide group of Amateur Radio operators who
share an active interest in designing, building, launching and commun-
icating through analog and digital Amateur Radio satellites.
The news feed on http://www.amsat.org publishes news of Amateur
Radio in Space as soon as our volunteers can post it.
Please send any amateur satellite news or reports to:
ans-editor at amsat.org.
You can sign up for free e-mail delivery of the AMSAT News Service
Bulletins via the ANS List; to join this list see:
http://www.amsat.org/mailman/listinfo/ans
In this edition:
* 38th Annual AMSAT Space Symposium and Annual General Meeting Announced
* Update from the AMSAT President
* ARISS Video of SpaceX CRS-20 Launch Carrying IORS
* Minor Update to FoxTelem Released
* Use the NO-84 PSK31 Transponder Now!
* ARISS News
* Hamfests, Conventions, Maker Faires, and Other Events
* Upcoming Satellite Operations
* Satellite Shorts from All Over
SB SAT @ AMSAT $ANS-075.01
ANS-075 AMSAT News Service Weekly Bulletins
AMSAT News Service Bulletin 075.01
From AMSAT HQ KENSINGTON, MD.
DATE March 15, 2020
To All RADIO AMATEURS
BID: $ANS-075.01
38th Annual AMSAT Space Symposium and Annual General Meeting Announced
AMSAT is pleased to announce that the 38th Annual AMSAT Space Sym-
posium and Annual General Meeting will be held on Friday, October 16th
- Sunday, October 18th at the Crowne Plaza Suites: MSP Airport - Mall
of America in Bloomington, Minnesota.
The Crowne Plaza Suites is conveniently located adjacent to the Amer-
ican Blvd station on the Metro Blue Line, providing easy access to the
Minneapolis-Saint Paul International Airport, downtown Minneapolis,
and the Mall of America.
The AMSAT Board of Directors will meet on Wednesday, October 14th and
Thursday, October 15th at the hotel.
Further details, including hotel reservation information, tours, and
other events will be shared in the coming months.
[ANS thanks the 2020 AMSAT Symposium Committee for the above infor-
mation]
--------------------------------------------------------------------
Update from the AMSAT President
The past six weeks since becoming AMSAT President has flown by with
great speed. Thankfully I?m not travelling at 27,000 km/hour like our
popular satellite AO-91. Speaking with many of our volunteers and
members, I?ve felt the level of excitement and enthusiasm for the
great launch opportunities ahead.
As mentioned in ANS-047, one of my tasks was to speak with the
Directors and convene a meeting to conduct AMSAT corporate business.
Tuesday, March 3, AMSAT held an informal working session for the Board
of Directors. We are moving forward with a called Board of Directors
meeting scheduled on Tuesday, March 17. The next meeting will allow
Directors to put forward motions for new business, hear a status
update from our officers, and set future trajectory.
The amateur radio community has felt the impact of COVID-19
(Coronavirus) with the cancellation of some regional events. Even as
this health emergency has been raised to World Health Organization
(WHO)?s highest level, its Director-General Tedros Adhanom Ghebreyesus
remains hopeful that COVID-19 can be curtailed. AMSAT is closely
monitoring the upcoming 2020 Hamvention being held over 60 days away
in Xenia, Ohio. The Dayton Amateur Radio Association (DARA) has
publicly stated they are following guidance from the State of Ohio and
Greene County. Barring further information from DARA, AMSAT will
continue to make plans for our representation at the 2020 Hamvention.
AMSAT officers are also working on contingency plans if Hamvention is
canceled. These plans include virtual presentations and other real-
time online activities during Hamvention weekend.
Our next edition of the AMSAT Journal will be going through the
editing review process soon. It will contain more detailed information
about the health of AMSAT, its mission status, and share exciting news
for 2020. If you?re not a member receiving the Journal, please
consider joining at our website www.amsat.org.
73,
Clayton
W5PFG
AMSAT President
[ANS thanks AMSAT President Clayton Coleman, W5PFG, for the above in-
formation]
+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+
Purchase AMSAT Gear on our Zazzle storefront.
25% of the purchase price of each product goes
towards Keeping Amateur Radio in Space
https://www.zazzle.com/amsat_gear
+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+
ARISS Video of SpaceX CRS-20 Launch Carrying IORS
On Friday, March 6, 2020 at 11:50 EST, SpaceX CRS-20 was successfully
launched from Pad 40 at Kennedy Space Center. This was also a signif-
icant launch for ARISS since this cargo mission was carrying our
Interoperable Radio System to the International Space Station.
This system will greatly enhance our capabilities on board Station
involving our school contacts with the crew and both our current and
planned future educational experiments. A special thanks to all who
have donated and continue to donate to our ARISS Next-Generation Hard-
ware Upgrade Fundrazr at our website www.ariss.org. You are making it
all happen!!
I was able to attend the launch along with several other ARISS volun-
teers and have created a short video of the experience from our view-
ing location at the Banana Creek ViewPoint. Please note that you will
hear two moderators on the video. One is actually at our site,
announcing the launch. Another audio feed is coming from the PA system
there and is delayed 30 seconds from real time, so try not to get too
confused as you listen in.
Hope you enjoy the video.
Dave, AA4KN, ARISS PR
The video can be found at https://tinyurl.com/ANS-075-ARISS
[ANS thanks Dave Jordan, AA4KN, ARISS Public Relations for the above
information]
--------------------------------------------------------------------
Minor Update to FoxTelem Released
FoxTelem has been updated to version 1.08z5 and the latest version is
here:
http://amsat.us/FoxTelem/windows/
http://amsat.us/FoxTelem/linux/
http://amsat.us/FoxTelem/mac/
This is not a mandatory upgrade. It fixes some minor bugs that caused
crashes and corrects the calculation of the bit SNR for the Dot Pro-
duct BPSK detector.
If you use the Dot Product detector and you care about the measured
bit signal to noise ratio, then you want to upgrade. Note that if you
use Find Signal in IQ mode then the bit SNR level is used to determine
if the signal is found. Because the level has changed you will need to
adjust the threshold value. Email Chris Thompson at g0kla at arrl.net
if you need more information.
Please let me know if you see any issues, or log them on GitHub here:
https://github.com/ac2cz/FoxTelem/issues
[ANS thanks Chris Thompson, AC2CZ/G0KLA, AMSAT FoxTelem Developer for
the above information]
--------------------------------------------------------------------
Use the NO-84 PSK31 Transponder Now!
Amid reports that NO-84's battery is weakening, Bob Bruninga, WB4APR,
shared the following message:
Before PSAT (NO-84) dies, don?t miss out on trying out its HF 28.120
PSK31 uplink transponder (435.350 MHz FM downlink). Apparently its
battery is weakening and cannot make it through some eclipses. And
the orbit only has 2 years left (Battery probably wont last that
long).
But in the sun, it should work fine. PSK31 Xponder is always enabled,
all it needs is to see PSK31 on the Ten-meter uplink.
It will also send down an SSTV image (in the same waterfall) once
every 2 minutes if the sun power is good.
[ANS thanks Bob Bruninga, WB4APR, for the above information]
--------------------------------------------------------------------
ARISS News
Turkey Space Camp, Izmir, Turkey, telebridge via W5RRR
The ISS callsign is presently scheduled to be NA1SS
The scheduled astronaut is Drew Morgan KI5AAA
Contact is go for Option #4: Thu 2020-03-19 08:59:54 UTC 37 deg
The ARISS webpage is at https://www.ariss.org/
Note that there are links to other ARISS websites from this site.
[ANS thanks Charlie Sufana, AJ9N, of the ARISS Operations Team, for
the above information]
+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+
Need new satellite antennas? Purchase Arrows, Alaskan Arrows,
and M2 LEO-Packs from the AMSAT Store. When you purchase through
AMSAT, a portion of the proceeds goes towards
Keeping Amateur Radio in Space.
https://amsat.org/product-category/hardware/
+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+
Hamfests, Conventions, Maker Faires, and Other Events
AMSAT Ambassadors provide presentations, demonstrate communicating
through amateur satellites, and host information tables at club
meetings, hamfests, conventions, maker faires, and other events.
Note: Due to the COVID-19 situation, please check these events' web-
sites for up-to-date status information.
Current schedule:
March 21, 2020, Scottsdale Amateur Radio Club Hamfest, Scottsdale, AZ
March 28, 2020, Tucson Spring Hamfest, Tucson, AZ
April 4, 2020 River Bend Wireless and Mechanical Society Presentation
Faribault, MN
April 18, 2020 Brainerd Area Amateur Radio Club Hamfest, Brainerd, MN
May 2, 2020 Arrowhead Radio Amateurs Club Hamfest, Superior, WI
May 2, 2020, Cochise Amateur Radio Assoc. Hamfest, Sierra Vista, AZ
May 8-9, 2020 Prescott Hamfest, Prescott, AZ
May 15-17, Hamvention, Xenia, OH
June 12-13, 2020, Ham-Con, Plano, TX
The following events scheduled to have an AMSAT presence have been
CANCELED:
March 21, 2020, Midwinter Madness Hamfest, Buffalo, MN
March 29, 2020, Vienna Wireless Winterfest, Annandale, VA
[ANS thanks Robert Bankston, KE4AL, AMSAT VP-User Services for the
above information]
+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+
AMSAT, along with our ARISS partners, is developing an amateur
radio package, including two-way communication capability, to
be carried on-board Gateway in lunar orbit.
Support AMSAT's projects today at https://www.amsat.org/donate/
+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+
Upcoming Satellite Operations
- Big Bend National Park (DL88) March 16-17, 2020
Ron AD0DX and Doug N6UA will operate from Big Bend National Park to
put grid DL88 on the air. Details will be added here, as they come
available, but you are more than welcome to keep an eye on their
individual Twitter feeds: https://twitter.com/ad0dx and
https://twitter.com/dtabor
- Red River Gorge, KY (EM87) March 19-24, 2020
Michael, N4DCW will be in Red River Gorge, Kentucy, March 19th
through 24th. Watch Michael?s Twitter feed for more info
https://twitter.com/MWimages
- Midwinter Madness Rove: (EN24, EN25, EN34) March 20-21, 2020
Mitch, AD0HJ, will roving three central Minnesota grids just prior to
the Midwinter Madness Hobby Electronics Show in Buffalo, MN on March
21st, 2020. Look for him to activate grids EN24/EN25/EN35 on the eve-
ning of March 20th through the evening of March 21st, 2020. Check
Mitch?s Twitter feed for updates on his planned satellite pass sche-
dule: https://twitter.com/AD0HJ
- River Bend Wireless Rove (EN22, EN33, EN34, EN42, EN43, EN44) April
2-4, 2020
Mitch AD0HJ is looking to add six more grids to his rover basket just
before the April 4th AMSAT presentation/demonstration at the River
Bend Wireless and Mechanical Society in Faribault, MN. Mitch will be
activating the EN43/EN44 grid line on April 2nd, the EN32/EN42 grid
line on April 3rd, and the EN33/EN34 grid line on April 4th, 2020.
Watch Mitch?s Twitter feed as the dates approach for a detailed sche-
dule. https://twitter.com/AD0HJ
- From the Mountains to the Bay (CM88,89,98,99 DM09,19,29 DN00,01,02,10,
11,20,21) April 12-21, 2020
RJ, WY7AA, is hitting the asphalt again, roving from Wyoming to Vaca-
ville, CA. He?s attending a class from April 15-19, so most of the
roving will be outside of this time. Grids to be covered include:
CM88,89,98,99 DM09,19,29 DN00,01,02,10,11,20,21. Specific pass details
will be posted on WY7AA QRZ page and Twitter
(https://twitter.com/WY7AA) as the trip approaches.
[ANS thanks Robert Bankston, KE4AL, AMSAT VP-User Services for the
above information]
--------------------------------------------------------------------
Satellite Shorts From All Over
+ A Doppler.sqf file posted on the AMSAT-UK website listed FM freq-
uencies for several satellites carrying linear transponders. Operators
are reminded that FM is not to be used on linear transponders. (ANS
thanks AMSAT-UK for this information)
+ On March 10th, March 10, 2020, the AMSAT-SM group was formed in
connection with the closure of the AMSAT-SM organization. The process
of creating AMSAT-SM for the future began after the 2019 annual meet-
ing and now we are ready to continue with AMSAT-SM in a new and simp-
ler way. All activities that were part of the old AMSAT-SM are now
transferred to the new group. The website will be updated in March
with new steering guidelines and other relevant information. Welcome
with us into the future. AMSAT-SM is Amateur Radio via Satellite!
(ANS thanks SM0TGU from AMSAT-SM for this information)
+ ARRL has announced a new book entitled "Amateur Radio Satellites for
Beginners" by Steve Ford, WB8IMY. It can be purchased at
http://www.arrl.org/shop/Amateur-Radio-Satellites-for-Beginners/ (ANS
thanks the ARRL for this information)
+ The CAS-4B beacon is again sending telemetry after sending only a
continuous tone for the past few weeks. (ANS thanks John Papay, K8YSE,
for this information)
---------------------------------------------------------------------
In addition to regular membership, AMSAT offers membership in the
President's Club. Members of the President's Club, as sustaining
donors to AMSAT Project Funds, will be eligible to receive addi-
tional benefits. Application forms are available from the AMSAT
Office.
Primary and secondary school students are eligible for membership
at one-half the standard yearly rate. Post-secondary school students
enrolled in at least half time status shall be eligible for the stu-
dent rate for a maximum of 6 post-secondary years in this status.
Contact Martha at the AMSAT Office for additional student membership
information.
73 and remember to help Keep Amateur Radio in Space,
This week's ANS Editor,
Paul Stoetzer, N8HM
n8hm at amsat dot org
------------------------------
Message: 7
Date: Sat, 14 Mar 2020 22:01:22 -0500
From: Jerry Buxton <n0jy@?????.???>
To: amsat-bb@?????.???
Subject: Re: [amsat-bb] Ni-Cd's on Satellites and MASS advantage!
Message-ID: <19a96437-e9fa-8176-c4e2-2cb26fa9d619@?????.???>
Content-Type: text/plain; charset=utf-8
Amen.
Jerry Buxton, N?JY
On 3/14/2020 11:53, Robert Bruninga via AMSAT-BB wrote:
> We have used NiCds on all of my 4 satellites with no battery problems.
>
> They are robust, and survive all student mistakes and require no Battery
> management system when paired with a matching solar panel design. IE, as
> th batteries approach full charge is the same point where the solar panel
> voltage maxes. Also NiCd's can be safely overcharged at 10% indefinitely
> with no concern. (you only get an hour in the sun and then 35 minutes
> eclipse)...
>
> Yes, they are twice as heavy as Lithium, but the advantages FAR outweigh
> the criticality of Lithium concerns and complexity of the BMS and total
> failure on overcharge or undercharge.
>
> And MASS is an advantage! PSAT and BRICSAT-1 are identical 1.5U cubesats
> launched at the same time in May 2015. But PSAT with big C cell NiCd's was
> made heavier with lead ballast to 2.3kg. BRICSAT (1.7 kg) with lightweight
> Lithiums has already decayed in November. PSAT is predicted to last 2 more
> years! Same thing for identical RAFT and MARSCOM cubesats back in 2006.
> RAFT was ballasted up and lasted TWICE as long as MARSCOM.
>
> For comm satellites, there is no reason to come in under mass. Always
> ballast up to the maximum the launcher will allow!
>
> Bob, WB4APR
>
>
------------------------------
Message: 8
Date: Sat, 14 Mar 2020 23:29:43 -0400
From: John Brier <johnbrier@?????.???>
To: Mr B r a d <jhill_81@?????.???>
Cc: AMSAT BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] adding pics and nicads in space
Message-ID:
<CALn0fKO02aY_x_DFLp1DkBBwcs9TQohn+jGfCQE5Jk5R=aV1kA@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Don't see the URL to imgur. Try copy and paste from the address bar?
73, John Brier KG4AKV
On Sat, Mar 14, 2020, 17:30 Mr B r a d via AMSAT-BB <amsat-bb@?????.???>
wrote:
> 3rd party pics Imgur test
> and perhaps nicads in space don't get the gunk build up on the vent that
> we see on failed units on earth? has anyone seen the gunk on a failed nicad
> from space ?
>
>
> |
> |
> |
> | | |
>
> |
>
> |
> |
> | |
> Imgur
>
> Imgur
>
> working LEO Ham Sats with a 5 watt H/T
> |
>
> |
>
> |
>
> photo from a 20m sstv qso
> ko6kL
> _______________________________________________
> 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: Sun, 15 Mar 2020 14:12:09 +0000 (UTC)
From: Gerald Witalec <jplanner@?????????.???>
To: amsat-bb@?????.???
Subject: [amsat-bb] KENWOOD TH-D74A
Message-ID: <1738936939.877515.1584281529222@????.?????.???>
Content-Type: text/plain; charset=UTF-8
JoAnne,I believe the TH-D74A is NOT duplex receive so how is that working
out for you contacting the SATS?
Jerry...W8RQM
------------------------------
Message: 10
Date: Sun, 15 Mar 2020 09:15:21 -0500
From: JoAnne K9JKM <k9jkm@???????.???>
To: amsat-bb@?????.???
Subject: Re: [amsat-bb] KENWOOD TH-D74A
Message-ID: <5E6E3879.9090000@???????.???>
Content-Type: text/plain; charset=windows-1252; format=flowed
Hello Jerry,
> I believe the TH-D74A is NOT duplex receive so how is that
> workiing out for you contacting the SATS?
I don't own a TH-D74A so I can't really tell you.
I was passing along a reminder to Steve where AMSAT has posted the
information. It might help others too.
--
73 de JoAnne K9JKM
k9jkm@?????.???
------------------------------
Message: 11
Date: Sun, 15 Mar 2020 18:15:39 +0000 (UTC)
From: Brad Smith <corlissbs@???.???>
To: amsat-bb@?????.???
Subject: [amsat-bb] High Power and Rudeness
Message-ID: <350589021.987762.1584296139513@????.?????.???>
Content-Type: text/plain; charset=UTF-8
I have been working satellites since 2013. Today, I was roving on a grid
line and worked the two East birds, AO-91 and 92. After I gave out my call
and said "grid line" and gave the grids, guys tried to call me but no one
would let them in on either bird, nor let me take them. The power was so
high that my portable rig didn't have a chance. The entire pass, was this
way. I have never seen such rudeness and greed on the birds. One particular
guy dominated both passes. There was not one break at all. Is this what we
have become? A free for all? Anybody who heard me and needs the grids, pleas
email me. Brad KC9UQR grid line EN54/64.?
------------------------------
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------------------------------
End of AMSAT-BB Digest, Vol 15, Issue 81
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