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CX2SA > SATDIG 24.10.19 23:55l 1002 Lines 28559 Bytes #999 (0) @ WW
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From: CX2SA@CX2SA.SAL.URY.SOAM
To : SATDIG@WW
Today's Topics:
1. Re: Proximity of HF vertical to my satellite antennas
(jim@?????.????
2. Re: Proximity of HF vertical to my satellite antennas (Kevin)
3. Re: 70cm patch antenna (Ronald G. Parsons)
4. Re: Proximity of HF vertical to my satellite antennas
(Bob Hammond)
5. ISS contact with West Point Ham club (christy hunter)
6. Upcoming ARISS Contact Schedule as of 2019-10-24 16:30 UTC
(aj9n@???.????
7. Re: ISS contact with West Point Ham club (Roy Dean)
8. Returning to satellites and forgot lots (Gary Rogers)
9. Re: Returning to satellites and forgot lots (Mark D. Johns)
10. Re: Returning to satellites and forgot lots (Mike Seguin)
11. South Texas Rove Nov 2nd to 9th (Ron Bondy)
----------------------------------------------------------------------
Message: 1
Date: Thu, 24 Oct 2019 07:26:51 -0700 (PDT)
From: "jim@?????.???? <jim@?????.???>
To: amsat-bb@?????.???
Subject: Re: [amsat-bb] Proximity of HF vertical to my satellite
antennas
Message-ID: <1571927211.7282804@????.?????????.???>
Content-Type: text/plain;charset=UTF-8
No
-----Original Message-----
From: "Bob Hammond via AMSAT-BB" <amsat-bb@?????.???>
Sent: Thursday, October 24, 2019 06:11
To: amsat-bb@?????.???
Subject: [amsat-bb] Proximity of HF vertical to my satellite antennas
My neighbor has a HF vertical (10/15/20 meter trap) that is about 30 feet
from my 2M/70/cm/23cm satellite antennas.
He currently runs 100W and is planning on going to 200W.
Should I be concerned? Will the RF get into my feed lines and blow up my
rig? Or into my antenna rotor cables and fry my controller?
I am still in construction mode for my satellite ground station.
Bob
W7OTJ.
_______________________________________________
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: Thu, 24 Oct 2019 07:44:02 -0700
From: Kevin <wa7fwf@?????.???>
To: amsat-bb@?????.???
Subject: Re: [amsat-bb] Proximity of HF vertical to my satellite
antennas
Message-ID: <18c5c828-39d5-5fbc-5c5a-0cf731f97967@?????.???>
Content-Type: text/plain; charset=utf-8; format=flowed
Bob,
?? Some external preamps like to put a couple diodes back to back on
the input to prevent blowing out the preamp, they will rectify his
signal and create hash, it wont hurt anything but will interfere.
You would have to look at the schematic of your rig to see if it has
similar front end protection.
?? My HF vertical? is 50 feet from my sat antennas and 120 feet from
another set of sat antennas and I get into both and create? a wideband
hash with 100 watts, 500 watts totally wipes out sat reception.
I have been running this way for years and have yet to damage a preamp
or rig.
I have had no issues with rotor cables but I do have some clamp on
ferrites on them.
YMMV
73
Kevin WA7FWF
On 10/24/2019 06:11, Bob Hammond via AMSAT-BB wrote:
> My neighbor has a HF vertical (10/15/20 meter trap) that is about 30 feet
> from my 2M/70/cm/23cm satellite antennas.
>
> He currently runs 100W and is planning on going to 200W.
>
> Should I be concerned? Will the RF get into my feed lines and blow up my
> rig? Or into my antenna rotor cables and fry my controller?
>
> I am still in construction mode for my satellite ground station.
>
> Bob
> W7OTJ.
> _______________________________________________
> 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: 3
Date: Thu, 24 Oct 2019 09:57:23 -0500
From: "Ronald G. Parsons" <w5rkn@?????.???>
To: "AMSAT-BB" <AMSAT-BB@?????.???>
Subject: Re: [amsat-bb] 70cm patch antenna
Message-ID: <FC4E134E015D42379E14DACA22BB84CD@?????????>
Content-Type: text/plain; charset="iso-8859-1"
I have not used a patch antennas on 435 MHz but I have used then extensively
at 900 MHz with great success, both transmit and receive. A simple,
non-fragile antenna with a hemi-spherical pattern.
See also:
https://www.highfrequencyelectronics.com/Mar09/HFE0309_Tutorial.pdf
Ron W5RKN
------------------------------
Message: 4
Date: Thu, 24 Oct 2019 08:25:37 -0700
From: Bob Hammond <propgrinder@?????.???>
To: Kevin <wa7fwf@?????.???>
Cc: amsat-bb@?????.???
Subject: Re: [amsat-bb] Proximity of HF vertical to my satellite
antennas
Message-ID:
<CAKoB7OpbwBK6aisDYYXV9stheQpCjF=wpeUgikGEiHajnJgpmQ@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Thanks all.
What do you all do for a station ground and lightning protection?
Bob
W7OTJ
On Thu, Oct 24, 2019 at 8:00 AM Kevin via AMSAT-BB <amsat-bb@?????.???>
wrote:
> Bob,
> Some external preamps like to put a couple diodes back to back on
> the input to prevent blowing out the preamp, they will rectify his
> signal and create hash, it wont hurt anything but will interfere.
> You would have to look at the schematic of your rig to see if it has
> similar front end protection.
> My HF vertical is 50 feet from my sat antennas and 120 feet from
> another set of sat antennas and I get into both and create a wideband
> hash with 100 watts, 500 watts totally wipes out sat reception.
> I have been running this way for years and have yet to damage a preamp
> or rig.
> I have had no issues with rotor cables but I do have some clamp on
> ferrites on them.
> YMMV
> 73
> Kevin WA7FWF
>
> On 10/24/2019 06:11, Bob Hammond via AMSAT-BB wrote:
> > My neighbor has a HF vertical (10/15/20 meter trap) that is about 30 feet
> > from my 2M/70/cm/23cm satellite antennas.
> >
> > He currently runs 100W and is planning on going to 200W.
> >
> > Should I be concerned? Will the RF get into my feed lines and blow up my
> > rig? Or into my antenna rotor cables and fry my controller?
> >
> > I am still in construction mode for my satellite ground station.
> >
> > Bob
> > W7OTJ.
> > _______________________________________________
> > 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: Thu, 24 Oct 2019 08:31:43 -0700
From: christy hunter <cchunter3@??????????.???>
To: amsat-bb@?????.???
Subject: [amsat-bb] ISS contact with West Point Ham club
Message-ID: <c75ac70b-eadd-3b91-7d75-ef1226aed682@??????????.???>
Content-Type: text/plain; charset=utf-8; format=flowed
pretty neat!
https://www.dvidshub.net/news/348932/ham-radio-club-contacts-speaks-morgan-abo
ard-iss
73 Christy KB6LTY
------------------------------
Message: 6
Date: Thu, 24 Oct 2019 16:44:53 +0000 (UTC)
From: aj9n@???.???
To: amsat-bb@?????.???
Subject: [amsat-bb] Upcoming ARISS Contact Schedule as of 2019-10-24
16:30 UTC
Message-ID: <1986680918.288389.1571935493107@????.?????.???>
Content-Type: text/plain; charset=UTF-8
Upcoming ARISS Contact Schedule as of 2019-10-24 16:30 UTC
?
Quick list of scheduled contacts and events:
?
Liceo Scientifico Teresa Gullace, Rome, Italy,direct via IZ?DIB and I.S.I.S.
? Zaccagna - Galilei? sede ?G. Galilei?, Carrara. Italy, direct via IQ5VR
The ISS callsign is presently scheduled to be IR?ISS
The scheduled astronaut is Luca Parmitano KF5KDP
Contact was successful: Thu 2019-10-24 11:13:40 UTC 79 deg (***)
?
Watch for live stream from Rome at:
https://www.liceogullace.edu.it/collegamento-con-luca-parmitano/
?
?
I.I.S. ?Ciampini-Boccardo?, Novi Ligure, Italy, direct via I1LJV and
I.T.I.S. "Magistri Cumacini", Como, Italy, direct via IZ2MCC
The ISS callsign is presently scheduled to be IR?ISS
The scheduled astronaut is Luca Parmitano KF5KDP
Contact is go for: Fri 2019-10-25 10:24:39 UTC 83 deg
?
Watch for live stream at:
Novi Ligure
school:?https://www.facebook.com/Istituto-Ciampini-Boccardo-210130833074338/
?
Como school:?http://www.arilomazzo.it/ISS-Magistri/
?
?
Golden Oak Montessori, Castro Valley, CA, telebridge via K6DUE
The ISS callsign is presently scheduled to be NA1SS
The scheduled astronaut is Drew Morgan KI5AAA
Contact is go for: Mon 2019-10-28 15:50:06 UTC 82 deg
Watch for live stream at: (***)
https://www.goldenoakmontessori.org/apps/pages/index.jsp?uREC_ID=884592&type=d
&pREC_ID=1787594
?
Young Scientists Program at USC and Vermont Elementary School, Los Angeles,
CA, direct via KN6CHS
The ISS callsign is presently scheduled to be NA1SS
The scheduled astronaut is Luca Parmitano KF5KDP
Contact is go for: Mon 2019-10-28 18:57:35 UTC 70 deg
Watch for live stream at: (***)
http://www.uscannenbergmedia.com/?
?
Farmwell Station Middle School Space Dreamers, Ashburn, VA, direct via K4LRG
The ISS callsign is presently scheduled to be NA1SS
The scheduled astronaut is Drew Morgan KI5AAA
Contact is go for: Tue 2019-10-29 15:01:27 UTC 44 deg
?
Starting at about 14:15 UTC, watch for live stream at: (***)
https://live.myvrspot.com/player?udi=bG91ZG91bg==&c=ZmFybWlzcw==
?
?
?
The ARISS webpage is at https://www.ariss.org/ ???
Note that there are links to other ARISS websites from this site.
?
The main page for Applying to Host a Scheduled Contact may be found at
https://www.ariss.org/apply-to-host-an-ariss-contact.html ???
ARISS Contact Applications (United States)
?
?
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?2019-10-24 16:30 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.
?
https://www.amsat.org/amsat/ariss/news/arissnews.rtf
https://www.amsat.org/amsat/ariss/news/arissnews.txt
?
?
The successful school list has been updated as of 2019-10-24 16:30 UTC. (***)
https://www.amsat.org/amsat/ariss/news/Successful_ARISS_schools.rtf
?
?
?
The ARISS webpage is at https://www.ariss.org/ ???
Note that there are links to other ARISS websites from this site.
?
The main page for Applying to Host a Scheduled Contact may be found at
https://www.ariss.org/apply-to-host-an-ariss-contact.html ???
?
ARISS Contact Applications (United States)
?
The ARISS webpage is at https://www.ariss.org/ ???
Note that there are links to other ARISS websites from this site.
?
?
ARISS Contact Applications (United States)
?
Message to US Educators?
Amateur Radio on the International Space Station?
Contact Opportunity?
?
Call for Proposals?
New Proposal Window is October 1, 2019 to November 30, 2019?
?
The Amateur Radio on the International Space Station (ARISS) Program is
seeking formal and informal education institutions and organizations,
individually or working together, to host an Amateur Radio contact with a
crew member on board the ISS.? ARISS anticipates that the contact would be
held between July 1, 2020 and December 31, 2020. Crew scheduling and ISS
orbits will determine the exact contact dates. To maximize these radio
contact opportunities, ARISS is looking for organizations that will draw
large numbers of participants and integrate the contact into a
well-developed education plan.?
?
The deadline to submit a proposal is November 30, 2019.? Proposal
information and documents can be found at https://www.ariss.org.?
?
The Opportunity?
?
Crew members aboard the International Space Station will participate in
scheduled Amateur Radio contacts. These radio contacts are approximately 10
minutes in length and allow students to interact with the astronauts through
a question-and-answer session.?
?
An ARISS contact is a voice-only communication opportunity via Amateur Radio
between astronauts and cosmonauts aboard the space station and classrooms
and communities. ARISS contacts afford education audiences the opportunity
to learn firsthand from astronauts what it is like to live and work in space
and to learn about space research conducted on the ISS. Students also will
have an opportunity to learn about satellite communication, wireless
technology, and radio science. Because of the nature of human spaceflight
and the complexity of scheduling activities aboard the ISS, organizations
must demonstrate flexibility to accommodate changes in dates and times of
the radio contact.?
?
Amateur Radio organizations around the world with the support of NASA and
space agencies in Russia, Canada, Japan and Europe present educational
organizations with this opportunity. The ham radio organizations' volunteer
efforts provide the equipment and operational support to enable
communication between crew on the ISS and students around the world using
Amateur Radio.??
?
More Information
?
For proposal information and more details such as expectations, proposal
guidelines and proposal form, and dates and times of Information Webinars,
go to https://www.ariss.org .
?
Please direct any questions to?ariss.us.education@?????.????
?
******************************************************************************
******************************************************************************
****************
ARISS Contact Applications (Europe, Africa and the Middle East)
?
Schools and Youth organizations in Europe, Africa and the Middle East
interested in setting up an ARISS radio contact with an astronaut on board
the International Space Station are invited to submit an application from
September to October and from February to April.
Please refer to details and the application form at
www.ariss-eu.org/school-contacts.? Applications should be addressed by email
to:? school.selection.manager@????????.???
?
ARISS Contact Applications (Canada, Central and South America, Asia and
Australia and Russia)
?
Organizations outside the United States can apply for an ARISS contact by
filling out an application.? Please direct questions to the appropriate
regional representative listed below. If your country is not specifically
listed, send your questions to the nearest ARISS Region listed. If you are
unsure which address to use, please send your question to the ARISS-Canada
representative; they will forward your question to the appropriate
coordinator.
?
For the application, go to:? https://www.ariss.org/ariss-application.html.
ARISS-Canada and the Americas, except USA: Steve McFarlane, VE3TBD email to:
ve3tbd@?????.???
ARISS-Japan, Asia, Pacific and Australia: Satoshi Yasuda, 7M3TJZ email to:
ariss@???????.???? Japan Amateur Radio League (JARL) https://www.jarl.org/
ARISS-Russia: Soyuz Radioljubitelei Rossii (SRR) https://srr.ru/
?
?
******************************************************************************
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@?????.??? or aj9n@???.???.
?
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 https://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??
Please note that the HamTV system has been brought back to earth for
troubleshooting.? Please monitor ARISS-EU or ARISS-ON for the very latest
news on the troubleshooting efforts.?
?
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@?????????.???
?
?
The HamTV webpage:? https://www.amsat-on.be/hamtv-summary/
?
?
****************************************************************************
ARISS congratulations the following mentors who have now mentored over 100
schools:
?
Satoshi 7M3TJZ with 136
Francesco IK?WGF with 135 (***)
Sergey RV3DR with 127
Gaston ON4WF with 123
?
****************************************************************************
The webpages listed below were all reviewed for accuracy. Out of date
webpages were removed, and new ones have been added.? If there are additional
ARISS websites I need to know about, please let me know.
?
?
?
Total number of ARISS ISS to earth school events is 1350. (***)
Each school counts as 1 event.??????????????????????????????????
Total number of ARISS ISS to earth school contacts is 1290. (***)
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.
https://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:
South Dakota, Wyoming, American?Samoa, Guam, Northern Marianas Islands, and
the Virgin Islands.
?
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
?
QSL information may be found at:
https://www.ariss.org/qsl-cards.html
?
ISS callsigns: DP?ISS, IR?ISS, NA1SS, OR4ISS, RS?ISS
?
****************************************************************************
Frequency chart for packet, voice, and crossband repeater modes showing
Doppler correction? as of 2005-07-29 04:00 UTC
https://www.amsat.org/amsat/ariss/news/ISS_frequencies_and_Doppler_correction.
rtf
Check out the Zoho reports of the ARISS contacts
?
https://reports.zoho.com/ZDBDataSheetView.cc?DBID=412218000000020415
****************************************************************************
?
Exp. 59 on orbit
Christina Koch
?
Exp. 60 on orbit
Luca Parmitano KF5KDP
Alexander Skvortsov
Drew Morgan KI5AAA
?
Exp. 61 on orbit
Oleg Skripochka
Jessica Meir
?
****************************************************************************
73,
Charlie?Sufana AJ9N
One of the ARISS operation team mentors
?
?
------------------------------
Message: 7
Date: Thu, 24 Oct 2019 12:57:35 -0400
From: Roy Dean <royldean@?????.???>
To: amsat-bb@?????.???
Subject: Re: [amsat-bb] ISS contact with West Point Ham club
Message-ID:
<CADGPg2vQUnHxWnujFsHcxZVhMowa=sb2YfOcVGQKrN+1nnvZGQ@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
I posted this link to the mailing list on Saturday (audio captured by my
satnogs station):
https://network.satnogs.org/observations/1112819/
--Roy
K3RLD
> pretty neat!
>
https://www.dvidshub.net/news/348932/ham-radio-club-contacts-speaks-morgan-abo
ard-iss
> 73 Christy KB6LTY
------------------------------
Message: 8
Date: Thu, 24 Oct 2019 13:56:04 -0400
From: Gary Rogers <grogers9@???.???>
To: amsat-bb@?????.???
Subject: [amsat-bb] Returning to satellites and forgot lots
Message-ID: <36428c9b-21ef-bdc5-82a7-6845066ac5d5@???.???>
Content-Type: text/plain; charset=utf-8; format=flowed
I'm returning to satellite operations after being off the air (entire
station disconnected) for over two decades and am looking to put my
FT-736R back to use in the manner for which it was intended.?? However,
while I'm OK with my 2M setup (rig to amp/pre-amp unit to Eggbeater) I'm
less confident on 70cM, specifically how not to toast the mast mounted
pre-amp. I know that I need to inject the voltage for the pre-amp using
the little control box that came with the pre-amp (Mirage KP-2 series)
but how do I ensure that the voltage drops when I transmit so the
pre-amp is taken out-of-line??? Perhaps there is a FAQ or diagram for
this out there somewhere?
Also, what is being used for CAT control these days if I'm using SatPC32
for tracking?
I feel like such a newb!
Thanks!?? -de Gary WA4YMZ
------------------------------
Message: 9
Date: Thu, 24 Oct 2019 13:48:45 -0500
From: "Mark D. Johns" <mjohns+K0JM@??????.???>
To: Gary Rogers <grogers9@???.???>
Cc: AMSAT <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Returning to satellites and forgot lots
Message-ID:
<CAHKCqnCW-JAqdY4zon3jbz1Z6gpcsxgzAStQrLEwvdxSkbt7Tw@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
SatPC32 will do your CAT control. It's built in, you just have to set it up.
The pre-amp power supply must have some means of sequencing with the
PTT of the radio. Check the instructions and the transceiver manual.
Looking forward to seeing you on the birds.
--
Mark D. Johns
K?JM / M?GZO / ex-9H3DJ / ex-K?MDJ
AMSAT Ambassador & News Service Editor
Brooklyn Park, MN USA EN35hd
-----------------------------------------------
"Heaven goes by favor; if it went by merit,
you would stay out and your dog would go in."
---Mark Twain
On Thu, Oct 24, 2019 at 1:06 PM Gary Rogers via AMSAT-BB
<amsat-bb@?????.???> wrote:
>
> I'm returning to satellite operations after being off the air (entire
> station disconnected) for over two decades and am looking to put my
> FT-736R back to use in the manner for which it was intended.?? However,
> while I'm OK with my 2M setup (rig to amp/pre-amp unit to Eggbeater) I'm
> less confident on 70cM, specifically how not to toast the mast mounted
> pre-amp. I know that I need to inject the voltage for the pre-amp using
> the little control box that came with the pre-amp (Mirage KP-2 series)
> but how do I ensure that the voltage drops when I transmit so the
> pre-amp is taken out-of-line??? Perhaps there is a FAQ or diagram for
> this out there somewhere?
>
> Also, what is being used for CAT control these days if I'm using SatPC32
> for tracking?
>
> I feel like such a newb!
>
> Thanks!?? -de Gary WA4YMZ
>
> _______________________________________________
> 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: Thu, 24 Oct 2019 14:49:22 -0400
From: Mike Seguin <n1jez@?????????????????.???>
To: amsat-bb@?????.???
Subject: Re: [amsat-bb] Returning to satellites and forgot lots
Message-ID:
<df4e10b1-6f9a-18e1-9860-a11ad8ff42d3@?????????????????.???>
Content-Type: text/plain; charset=utf-8; format=flowed
Hi Gary,
Long time!
Why not use the FT-736R to send power up the coax to your preamps if
they can use that. In the FT-736R, there are jumpers to enable 12v on RX
up the coax. You turn on the preamps by pushing the preamp switch in the
upper left corner.
There are some pros/cons of doing this based on TX power used/amps etc.
Sequencing might be better...
I built a small sequencer in to my FT-736R that holds off RF for ~ 100
ms on TX. With that, I can use amps and not worry about 'hot switching'
relays.
Also, if you're using an amp, some of them don't pass DC. (like my 70 cm
Teletec). In that situation, you can externally power the preamp, but
then you have to figure out switching (probably sequencing).
In my case, I wired the "preamp out" voltages to some RCA connectors I
mounted on the back of the FT-736R. I send this up the tower through my
control cable.
For CAT, I use SatPC32. As you know, the FT-736R is kind of brain dead
in that it can only accept a few input commands. It will not send things
like current freq etc back to SatPC32, so you must tune the rig within
SatPC32. Not an issue on the FM birds. A bit of a pain on the linear birds.
I built my own CAT interface. Basically an RS-232 to TTL converter. Lots
of info on the Web.
I still have a copy of your "Working the Easy Sats".
Mike
On 10/24/2019 1:56 PM, Gary Rogers via AMSAT-BB wrote:
> I'm returning to satellite operations after being off the air (entire
> station disconnected) for over two decades and am looking to put my
> FT-736R back to use in the manner for which it was intended.?? However,
> while I'm OK with my 2M setup (rig to amp/pre-amp unit to Eggbeater) I'm
> less confident on 70cM, specifically how not to toast the mast mounted
> pre-amp. I know that I need to inject the voltage for the pre-amp using
> the little control box that came with the pre-amp (Mirage KP-2 series)
> but how do I ensure that the voltage drops when I transmit so the
> pre-amp is taken out-of-line??? Perhaps there is a FAQ or diagram for
> this out there somewhere?
>
> Also, what is being used for CAT control these days if I'm using SatPC32
> for tracking?
>
> I feel like such a newb!
>
> Thanks!?? -de Gary WA4YMZ
>
> _______________________________________________
> 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.
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--
73,
Mike, N1JEZ
"A closed mouth gathers no feet"
------------------------------
Message: 11
Date: Thu, 24 Oct 2019 21:38:13 +0000 (UTC)
From: Ron Bondy <ad0dx@?????.???>
To: AMSAT BB <amsat-bb@?????.???>
Subject: [amsat-bb] South Texas Rove Nov 2nd to 9th
Message-ID: <1221117511.381243.1571953093938@????.?????.???>
Content-Type: text/plain; charset=UTF-8
Hi Everyone,
I will be roving to south Texas on the above dates.
My current plan is as follows:Sat Nov 2nd: EL08/EL09 probably one pass per
grid starting in the late afternoon local
Sun Nov 3rd: EL17/EL18 holiday style, one or two passes per grid
Mon Nov 4th through Fri Nov 8th: EL06 / EL15 / EL16.? We are staying in EL06
and will activate 15 and 16 a few times throughout the week.? Will probably
activate EL06 4 or 5 times.
Sat Nov 9th: EL07 / EL08 Probably one pass from each grid.
I will be active on FM and linear satellites and will tweet passes from
@?????.
Hope to give you a few new grids if you need them from south Texas.
Cheers,
Ron, ad0dx
------------------------------
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 14, Issue 386
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