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CX2SA > SATDIG 30.08.18 20:45l 867 Lines 28388 Bytes #999 (0) @ WW
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Sent: 180830/1836Z @:CX2SA.SAL.URY.SOAM #:52084 [Salto] FBB7.00e $:AMSATBB13297
From: CX2SA@CX2SA.SAL.URY.SOAM
To : SATDIG@WW
Today's Topics:
1. Cat control cable for FT736R (alex weimer)
2. Re: controller for g5500 rotor (Peter Goodhall (2M0SQL))
3. Re: controller for g5500 rotor (John)
4. Re: Thoughts on AZ/EL rotors (Daniel Holmes)
5. Upcoming ARISS Contact Schedule as of 2018-08-30 04:00 UTC
(aj9n@???.????
6. Re: Thoughts on AZ/EL rotors (Daniel Holmes)
7. Re: Thoughts on AZ/EL rotors (JoAnne Maenpaa)
8. Wanted: Andrew hardline (Norm n3ykf)
9. Radio selection: FT-818 vs IC-7100 (Daniel Holmes)
10. For sale: IC-821H (Matthew Stevens)
11. Ruby Payne-Scott - a must read into the history of
radio-astronomy. (Arthur Feller, W4ART)
----------------------------------------------------------------------
Message: 1
Date: Wed, 29 Aug 2018 14:45:46 -0400 (EDT)
From: alex weimer <ingejack@???.???>
To: amsat-bb@?????.???
Subject: [amsat-bb] Cat control cable for FT736R
Message-ID: <1419364916.2193439.1535568346209@???????.???.???>
Content-Type: text/plain; charset=UTF-8
Does anyone know what Cat control ttl-rs232 cable to use on a Yaesu Ft736 to
use for SATPC32 ?? Thank you
------------------------------
Message: 2
Date: Wed, 29 Aug 2018 21:30:38 +0100
From: "Peter Goodhall (2M0SQL)" <peter@????????.??.??>
To: Dave Webb KB1PVH <kb1pvh@?????.???>
Cc: Amsat <amsat-bb@?????.???>, jimki6wj@?????????.???
Subject: Re: [amsat-bb] controller for g5500 rotor
Message-ID:
<CAFvUaiprvjLfYiT1CJWTDYDhaPgjei5LxiqCfPqMYWAxeB=JAQ@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
ERC-M is my choice at the moment, seems to outperform the FoxDelta ST2
and the configuration options are way nicer!
Peter, 2M0SQL
On Wed, 29 Aug 2018 at 17:55, Dave Webb KB1PVH <kb1pvh@?????.???> wrote:
>
> Here's my answer to this same question about a month ago.
>
> Here are some of the popular rotor interfaces in no particular order.
>
> LVB Tracker from AMSAT
> https://www.amsat.org/product/lvb-tracker-complete/
>
> ERC-M
> http://www.vibroplex.com/contents/en-us/d79.html
>
> EA4TX controller https://ea4tx.com/en/products-page/ars-usb/
>
> Fox Delta ST2
> http://www.foxdelta.com/products/st2-rs232.htm
>
> Green Heron RT21
> https://www.greenheronengineering.com/RT_Overview.php
>
> Dave-KB1PVH
>
>
> Sent from my Galaxy S9
>
> On Wed, Aug 29, 2018, 12:47 PM James Brown <jimki6wj@?????????.???> wrote:
>
> > I am using a Fox Delta controller with my G5500. I am unable to
> > calibrate it and make it function correctly. I do not see the controller
> > that was available for years on the AMSAT website. What controllers are
> > available to replace the FOX Delta? It will interface with sat32pc.
> > Jim KI6WJ
> > _______________________________________________
> > 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: http://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: http://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 3
Date: Wed, 29 Aug 2018 21:42:05 +0100
From: "John" <john@?????.???.??>
To: "'Peter Goodhall \(2M0SQL\)'" <peter@????????.??.??>, "'Dave Webb
KB1PVH'" <kb1pvh@?????.???>
Cc: 'Amsat' <amsat-bb@?????.???>, jimki6wj@?????????.???
Subject: Re: [amsat-bb] controller for g5500 rotor
Message-ID: <025401d43fd8$bf970ba0$3ec522e0$@?????.???.??>
Content-Type: text/plain; charset="us-ascii"
Agreed, the through-hole kits are a doddle to build, the prebuilt smd kits
are equally good, and in fact Peter is using my first ERC-M!
It was so good I bought another... And that's 3 I've put in production in
different places now. The support on their Yahoo! Group is fantastic too.
73,
John (XLX)
-----Original Message-----
From: AMSAT-BB <amsat-bb-bounces@?????.???> On Behalf Of Peter Goodhall
(2M0SQL)
Sent: 29 August 2018 21:31
To: Dave Webb KB1PVH <kb1pvh@?????.???>
Cc: Amsat <amsat-bb@?????.???>; jimki6wj@?????????.???
Subject: Re: [amsat-bb] controller for g5500 rotor
ERC-M is my choice at the moment, seems to outperform the FoxDelta ST2 and
the configuration options are way nicer!
Peter, 2M0SQL
On Wed, 29 Aug 2018 at 17:55, Dave Webb KB1PVH <kb1pvh@?????.???> wrote:
>
> Here's my answer to this same question about a month ago.
>
> Here are some of the popular rotor interfaces in no particular order.
>
> LVB Tracker from AMSAT
> https://www.amsat.org/product/lvb-tracker-complete/
>
> ERC-M
> http://www.vibroplex.com/contents/en-us/d79.html
>
> EA4TX controller https://ea4tx.com/en/products-page/ars-usb/
>
> Fox Delta ST2
> http://www.foxdelta.com/products/st2-rs232.htm
>
> Green Heron RT21
> https://www.greenheronengineering.com/RT_Overview.php
>
> Dave-KB1PVH
>
>
> Sent from my Galaxy S9
>
> On Wed, Aug 29, 2018, 12:47 PM James Brown <jimki6wj@?????????.???> wrote:
>
> > I am using a Fox Delta controller with my G5500. I am unable to
> > calibrate it and make it function correctly. I do not see the
> > controller that was available for years on the AMSAT website. What
> > controllers are available to replace the FOX Delta? It will interface
with sat32pc.
> > Jim KI6WJ
> > _______________________________________________
> > 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:
> > http://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: http://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: http://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 4
Date: Wed, 29 Aug 2018 19:17:02 -0600
From: Daniel Holmes <danielh@???????????.???>
To: AMSAT BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Thoughts on AZ/EL rotors
Message-ID: <0C5D286A-72ED-4319-B8E3-26C80ABE12D2@???????????.???>
Content-Type: text/plain; charset=utf-8
I?ve got an old cheap Meade auto star telescope system. I?m planning on
attaching my Arrow to it with some 3d printed brackets (no dovetail). I can
control it via computer, and I?ve verified it can track fast enough. It
doesn?t look like it?ll handle anything heavier than the standard Arrow
though?I?d have to beef up the motor gearboxes.
Has anyone tried adapting an AZ/EL telescope drive system?
Dan
Sent from my iPad. Fewer misspellings, more errors.
> On Aug 1, 2018, at 7:40 PM, Mike Sprenger <mikesprenger@?????.???> wrote:
>
> Keith
>
> I?ve built several of the arduinos and loaded the K3NG code (excellent
stuff) to drive 2nd hand Yaesu 5400s which all works great w/SATPC32
>
> Mail me direct if I can help.
>
> Thanks,
> Mike
> W4UOO
>
> Sent from my iPhone
>
>> On Aug 1, 2018, at 1:56 PM, Corey Shields <cshields@?????.???> wrote:
>>
>> If you're comfortable with flashing an arduino and soldering a shield,
>> there is an open design for a G-5500 controller at the url below. It
>> works with the K3NG rotator controller arduino code (links are in that
>> page). A LOT cheaper than the GS232A!
>>
>>
https://gitlab.com/librespacefoundation/satnogs/g5500-ardushield/tree/master
>>
>> Cheers,
>> -Corey KB9JHU
>>
>> On Wed, Aug 1, 2018 at 1:47 PM, Keith E. Brandt, WD9GET
>> <wd9get@?????.???> wrote:
>>> I've been using the sats with my Arrow and HT and am considering the jump
>>> to a more robust station. I'm pretty well set with my TS-2000 and I can
>>> figure out antennas, but the interwebs are a major tangle of articles
about
>>> tracking systems, and I'm having problems sorting out the info overload.
>>>
>>> I'm in south Texas and planning a permanent installation, so weather
>>> hardiness is necessary. This seems to me to rule out SatNOGs and Portable
>>> Rotation systems. The main alternative I'm seeing is the Yaesu G-5500
(Alfa
>>> Spid is more than I'm wanting to spend). Where things get really murky is
>>> the computer interface. The GS232A is a bit on the expensive side. There
>>> are many alternatives, but many are no longer in production or are
>>> technically outdated.
>>>
>>> What I'm looking for from the group is recommendations for Az-El rotor
>>> systems and computer interfaces (I'm using SATPC32 and HRD for the
tracking
>>> software).
>>>
>>> Thanks & 73,
>>> Keith WD9GET
>>>
>>> --
>>> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>>>
>>> * Keith E. Brandt, WD9GET wd9get@?????.??? <wd9get@?????.???>*
>>>
>>> 'Christianity and science are opposed?but only in the same sense as my
>>> thumb and forefinger are opposed - and between them I can grasp
>>> everything.' ?Sir William Bragg (Nobel Prize for Physics- 1915)
>>>
>>> *This message transmitted with 100% recycled electrons
>>>
>>> *xb*
>>> _______________________________________________
>>> 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: http://www.amsat.org/mailman/listinfo/amsat-bb
>>
>>
>>
>> --
>> Corey Shields
>> _______________________________________________
>> 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: http://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: http://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 5
Date: Wed, 29 Aug 2018 22:51:09 -0400
From: aj9n@???.???
To: amsat-bb@?????.???
Subject: [amsat-bb] Upcoming ARISS Contact Schedule as of 2018-08-30
04:00 UTC
Message-ID: <16588bddfb4-1ebc-7d43@?????????????.???.???????.???>
Content-Type: text/plain; charset=utf-8
Upcoming ARISS Contact Schedule as of 2018-08-30 04:00 UTC
Quick list of scheduled contacts and events:
?
Study Hall, Lucknow, Uttar Pradesh, India, telebridge via K6DUE
The ISS callsign is presently scheduled to be NA1SS
The scheduled astronaut is Serena Aunon-Chancellor KG5TMT
Contact postponed per school request. (***)
?
Mendez Fundamental Intermediate School, Santa Ana, CA, direct via AA6TB
The ISS callsign is presently scheduled to be NA1SS
The scheduled astronaut is Ricky Arnold KE5DAU
Contact is a go for: Thu 2018-09-06 16:49:52 UTC 81 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@?????.??? 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?
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@?????????.???
****************************************************************************
ARISS congratulations the following mentors who have now mentored over 100
schools:?
Satoshi 7M3TJZ with 133
Francesco IK?WGF with 132
Gaston ON4WF with 123
Sergey RV3DR with 107
****************************************************************************
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.
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?2018-08-30 04:00 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 1252.
Each school counts as 1?event.
Total number of ARISS ISS to earth school contacts is 1199.
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:
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 2018-08-29 03:00 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. 55 on orbit
Drew Feustel
Oleg Artemyev
Ricky Arnold KE5DAU
?
Exp. 56 on orbit
Serena Aunon-Chancellor KG5TMT
Alexander Gerst KF5ONO
Sergei Propopev
****************************************************************************
73,
Charlie?Sufana AJ9N
One of the ARISS operation team mentors
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
------------------------------
Message: 6
Date: Wed, 29 Aug 2018 20:48:29 -0600
From: Daniel Holmes <danielh@???????????.???>
To: AMSAT BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Thoughts on AZ/EL rotors
Message-ID: <A29B3F9C-6EFA-4AD3-983D-39463742A6AD@???????????.???>
Content-Type: text/plain; charset=utf-8
Cool. My other scope mounts are equatorials, so I?d rather not go through a
meridian flip. It?s the guts of an old DS Meade, runs on 12V, and tracks I
think well enough for radio. Next up is an Arduino wireless based unit to be
able to rotate the Arrow circularly. But that shouldn?t be too hard-I?m
having more trouble figuring out Fusion 360 to design the brackets.
Thanks for the advice. I?ll keep everyone posted with my progress.
Dan N7NKR
Sent from my iPad. Fewer misspellings, more errors.
> On Aug 29, 2018, at 8:27 PM, Richard Tejera <Saguaroastro@???.???> wrote:
>
> Dan, it should work, I bought a used one (not ready to cannibalize my good
one) on eBay. I've got to fix the AZ bearing as it is stuck and doesn't
rotate without getting an error.
>
> I've tracked the ISS visually with it and it does track well.
>
> Adding or updating the elements is pretty easy using the hand paddle.
Essentially like adding a comet.
>
> Please keep me posted on your progress, I'd be interested in comparing
notes.
>
> Rick Tejera K7TEJ
> Saguaro Astronomy Club
> www.SaguaroAstro.org
> Thunderbird Amateur Radio Club
> www.w7tbc.org
>
> On August 29, 2018, at 18:17, Daniel Holmes <danielh@???????????.???> wrote:
>
> I?ve got an old cheap Meade auto star telescope system. I?m planning on
attaching my Arrow to it with some 3d printed brackets (no dovetail). I can
control it via computer, and I?ve verified it can track fast enough. It
doesn?t look like it?ll handle anything heavier than the standard Arrow
though?I?d have to beef up the motor gearboxes.
>
> Has anyone tried adapting an AZ/EL telescope drive system?
>
> Dan
>
> Sent from my iPad. Fewer misspellings, more errors.
>
>> On Aug 1, 2018, at 7:40 PM, Mike Sprenger <mikesprenger@?????.???> wrote:
>>
>> Keith
>>
>> I?ve built several of the arduinos and loaded the K3NG code (excellent
stuff) to drive 2nd hand Yaesu 5400s which all works great w/SATPC32
>>
>> Mail me direct if I can help.
>>
>> Thanks,
>> Mike
>> W4UOO
>>
>> Sent from my iPhone
>>
>>> On Aug 1, 2018, at 1:56 PM, Corey Shields <cshields@?????.???> wrote:
>>>
>>> If you're comfortable with flashing an arduino and soldering a shield,
>>> there is an open design for a G-5500 controller at the url below. It
>>> works with the K3NG rotator controller arduino code (links are in that
>>> page). A LOT cheaper than the GS232A!
>>>
>>>
https://gitlab.com/librespacefoundation/satnogs/g5500-ardushield/tree/master
>>>
>>> Cheers,
>>> -Corey KB9JHU
>>>
>>> On Wed, Aug 1, 2018 at 1:47 PM, Keith E. Brandt, WD9GET
>>> <wd9get@?????.???> wrote:
>>>> I've been using the sats with my Arrow and HT and am considering the jump
>>>> to a more robust station. I'm pretty well set with my TS-2000 and I can
>>>> figure out antennas, but the interwebs are a major tangle of articles
about
>>>> tracking systems, and I'm having problems sorting out the info overload.
>>>>
>>>> I'm in south Texas and planning a permanent installation, so weather
>>>> hardiness is necessary. This seems to me to rule out SatNOGs and Portable
>>>> Rotation systems. The main alternative I'm seeing is the Yaesu G-5500
(Alfa
>>>> Spid is more than I'm wanting to spend). Where things get really murky is
>>>> the computer interface. The GS232A is a bit on the expensive side. There
>>>> are many alternatives, but many are no longer in production or are
>>>> technically outdated.
>>>>
>>>> What I'm looking for from the group is recommendations for Az-El rotor
>>>> systems and computer interfaces (I'm using SATPC32 and HRD for the
tracking
>>>> software).
>>>>
>>>> Thanks & 73,
>>>> Keith WD9GET
>>>>
>>>> --
>>>> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>>>>
>>>> * Keith E. Brandt, WD9GET wd9get@?????.??? <wd9get@?????.???>*
>>>>
>>>> 'Christianity and science are opposed?but only in the same sense as my
>>>> thumb and forefinger are opposed - and between them I can grasp
>>>> everything.' ?Sir William Bragg (Nobel Prize for Physics- 1915)
>>>>
>>>> *This message transmitted with 100% recycled electrons
>>>>
>>>> *xb*
>>>> _______________________________________________
>>>> 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: http://www.amsat.org/mailman/listinfo/amsat-bb
>>>
>>>
>>>
>>> --
>>> Corey Shields
>>> _______________________________________________
>>> 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: http://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: http://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: http://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 7
Date: Thu, 30 Aug 2018 07:59:13 -0500
From: "JoAnne Maenpaa" <k9jkm@???????.???>
To: "'AMSAT BB'" <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Thoughts on AZ/EL rotors
Message-ID: <001e01d44061$4098fb40$c1caf1c0$@???>
Content-Type: text/plain; charset="UTF-8"
Hi Dan,
> Has anyone tried adapting an AZ/EL telescope drive system?
G6LVB experimented with a telescope drive as an antenna tracker a long time
ago (like back around 2005) so Rick's experiments are more timely.
Photos and a short article are posted at:
http://www.g6lvb.com/etx125.htm
Howard does point out that he needed counterweights to balance the stress on
the drive system's mechanical parts.
--
73 de JoAnne K9JKM
k9jkm@?????.???
------------------------------
Message: 8
Date: Thu, 30 Aug 2018 09:31:16 -0400
From: Norm n3ykf <normanlizeth@?????.???>
To: "<,amsat-bb@?????.???????? <amsat-bb@?????.???>
Subject: [amsat-bb] Wanted: Andrew hardline
Message-ID:
<CAJUhCTOguaGmdZR11-Y9=pkw22t3Ou=Yt=3qBd8qv_6TEFBAZg@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
The larger the better. 1 5/8" preferred, but any larger cable will be
considered.
Must be within driving distance of upstate NY.
Norm n3ykf
------------------------------
Message: 9
Date: Thu, 30 Aug 2018 09:06:04 -0600
From: Daniel Holmes <danielh@???????????.???>
To: AMSAT BB <amsat-bb@?????.???>
Subject: [amsat-bb] Radio selection: FT-818 vs IC-7100
Message-ID: <CA8A3FF0-76E5-4D54-BD78-F82F8FF7E73E@???????????.???>
Content-Type: text/plain; charset=utf-8
Hi everyone, time for another ?what radio is right for me? thread. I haven?t
seen one compare these two: IC-7100 and an FT-818. Primarily looking at
satellite work, but I?m also interested in HF digital (primarily FT8). I?ve
already got an Arrow antenna, and a potatoFeng. Right now I use an SDR to
receive, and CubicSDR works pretty well for that-I?ve gotten adept at moving
the tuning while using the Armstrong method of Alt/Az locating. I haven?t
tried transmitting, just because my HT has pretty poor transmit
characteristics. So I feel I?m pretty good on the full duplex issue.
Cost isn?t an issue, with the current rebate on the IC-7100 they are close
enough to not matter. And the accessories needed will balance out (for the
Icom, tuner and power supply, for the Yaesu, tuner, and signalink-I have an
adequate power supply).
For the short term (6 months or so) most of my satellite operating is going
to be from a card table in the back yard, or portable. HF will be a little
more permanent, so each radio will have to be disconnected, moved, and setup
again for satellite stuff. That?s the paralysis?the FT will probably be
easier to move, but the IC is more sensitive.
So I think my criteria is coming down to ergonomics of operating vs
sensitivity and HF power. I use MacDoppler for tracking, and will probably
rely on it for downlink shift on the radios, with my SDR as backup. Oh, I
already do QRP CW on 20, so I?m not too nervous about power of the 818.
Thanks,
Dan
Sent from my iPad. Fewer misspellings, more errors.
------------------------------
Message: 10
Date: Thu, 30 Aug 2018 12:35:16 -0400
From: Matthew Stevens <matthew@?????????.???>
To: amsat-bb@?????.???
Subject: [amsat-bb] For sale: IC-821H
Message-ID: <530125A5-3D2E-446F-B364-DE46257A2E42@?????????.???>
Content-Type: text/plain; charset=utf-8
I?ve got my IC-821H up for sale, including heil and non-heil mic adapters,
fused power cord with power poles, the original hand mic, pelican-style
case, original plastic wrapped manual and schematics, and 10?/11? UHV/VHF
ABR LNR240UF cables for an Arrow.
I?m asking $700 plus whatever shipping winds up.
You can view pics of the rig via the link below
https://twitter.com/matt_nj4y/status/1035199489605332993
73,
- Matthew nj4y
Sent from my iPhone
------------------------------
Message: 11
Date: Thu, 30 Aug 2018 12:47:54 -0400
From: "Arthur Feller, W4ART" <afeller@????.???>
To: AMSAT-BB <amsat-bb@?????.???>
Subject: [amsat-bb] Ruby Payne-Scott - a must read into the history of
radio-astronomy.
Message-ID: <EC3866B3-78C3-449E-B854-F06B2F5B5CD0@????.???>
Content-Type: text/plain; charset=us-ascii
https://www.nytimes.com/2018/08/29/obituaries/ruby-payne-scott-overlooked.html
?imp_id=581465759&action=click&module=Features&pgtype=Homepage
<https://www.nytimes.com/2018/08/29/obituaries/ruby-payne-scott-overlooked.htm
l?imp_id=581465759&action=click&module=Features&pgtype=Homepage>
To thrive in life, you need three bones: a wish bone, a back bone, and a
funny bone.
- Reba McEntire
http://afeller.us <http://afeller.us/>
------------------------------
Subject: Digest Footer
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------------------------------
End of AMSAT-BB Digest, Vol 13, Issue 297
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