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CX2SA > SATDIG 09.08.16 22:07l 712 Lines 25815 Bytes #999 (0) @ WW
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To : SATDIG@WW
Today's Topics:
1. DCC Call for Technical Papers: Deadline Extended to August
12th - ARRL/TAPR DCC (Digital Communications Conference), St.
Petersburg, FL, September 16 - 18, 2006 (Mark Thompson)
2. Re: Nusat-1 and Nusat2 (Dani EA4GPZ)
3. Re: Modulating UHF Retro Reflector at RF? (Ross Whenmouth)
4. Re: Uplink frequency of FM satellites (Paul Stoetzer)
5. Re: Uplink frequency of FM satellites (Paul - K6HR)
6. Re: Uplink frequency of FM satellites (Rich/wa4bue)
7. Re: Modulating UHF Retro Reflector at RF? (Daniel Cussen)
8. Re: Uplink frequency of FM satellites (Ronald G. Parsons)
9. Re: Uplink frequency of FM satellites (Ronald G. Parsons)
10. Re: Es'hail-2 re-scheduled for launch in Q3/2017 (PA3GUO)
11. Modulating UHF Retro Reflector at RF? (Roland Zurmely)
12. Re: Uplink frequency of FM satellites (Erich Eichmann)
13. Light duty az-el rotators (Dave Mann)
14. Re: Es'hail-2 re-scheduled for launch in Q3/2017 (Robert McGwier)
----------------------------------------------------------------------
Message: 1
Date: Tue, 9 Aug 2016 06:33:14 +0000 (UTC)
From: Mark Thompson <wb9qzb_groups@xxxxx.xxx>
To: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>,
"freetel-codec2@xxxxx.xxxxxxxxxxx.xxxx
<freetel-codec2@xxxxx.xxxxxxxxxxx.xxx>, "seatcp@xxxxxx.xxxx
<seatcp@xxxxxx.xxx>, "hpsdr@xxxxx.xxxxxxxxx.xxxx
<hpsdr@xxxxx.xxxxxxxxx.xxx>
Subject: [amsat-bb] DCC Call for Technical Papers: Deadline Extended
to August 12th - ARRL/TAPR DCC (Digital Communications Conference),
St. Petersburg, FL, September 16 - 18, 2006
Message-ID:
<1235231484.14098959.1470724394474.JavaMail.yahoo@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
DCC Call for Papers - Deadline Extended to August 12
Technical Papers are being solicited for presentation at the 35th Annual
ARRL/TAPR Digital Communications Conference (DCC), to be held September
16-18 in St Petersburg, Florida.?
Papers will also be published in the Conference Proceedings. Authors do not
need to attend the conference to have their papers included in the
Proceedings.?The submission deadline has been extended to August 12, 2016.?
?The ARRL/TAPR Digital Communications Conference is an international forum
for technically minded radio amateurs to meet and present new ideas and
techniques.?
Paper/presentation topic areas include ? but are not limited to ? software
defined radio (SDR), digital voice, digital satellite communication, digital
signal processing (DSP), HF digital modes, adapting IEEE 802.11 systems for
Amateur Radio, Global Positioning System (GPS), Automatic Position Reporting
System (APRS), Linux in Amateur Radio, AX.25 updates and Internet
operability with Amateur Radio networks.?
?Submit papers to via e-mail (maty@xxxx.xxxx or via post to Maty Weinberg,
KB1EIB, ARRL, 225 Main St, Newington, CT 06111.?Papers will be published
exactly as submitted, and authors will retain all rights.?
http://www.tapr.org/dcc#dcccallforpapers
http://www.tapr.org/dcc
ARRL/TAPR DCC?Saint Petersburg, FL?September 16 - 18, 2016
Call for Technical Papers
Technical papers are solicited for presentation at the ARRL and TAPR Digital
Communications Conference and publication in the Conference Proceedings.
Annual conference proceedings are published by the ARRL.?Presentation at the
conference is not required for publication.
Details on Call for Papers & Submission Guidelines are on TAPR DCC web site. ?
Submission of papers are due by July 31st, 2016 and should be submitted
to:Maty Weinberg, ARRL225 Main StreetNewington, CT 06111or via the Internet
to maty@xxxx.xxx
Note: Papers may continue to be accepted for a short time after deadline?so
please submit your paper as soon as possible if you haven't done so already.
http://www.tapr.org/dcc#dcccallforpapers
Details on Call for Papers
Technical papers are solicited for presentation at the ARRL and TAPR Digital
Communications Conference for publication in the Conference
Proceedings.Annual conference proceedings are published by the ARRL.
Presentation at the conference is not required for publication.The ARRL and
TAPR Digital Communications Conference is an international forum for radio
amateurs to meet, publish their work, and present new ideas and techniques.
Presenters and attendees will have the opportunity to exchange ideas and
learn about recent hardware and software advances, theories, experimental
results, and practical applications. Topics include, but are not limited to:
- Software Defined Radio (SDR)
- Digital voice (D-Star, P25, WinDRM, FDMDV, DRMDV, G4GUO)
- Digital satellite communications
- Global position system
- Precise Timing
- Automatic Packet Reporting System (APRS)
- Short messaging (a mode of APRS)
- Digital Signal Processing (DSP)
- HF digital modes
- Internet interoperability with Amateur Radio networks
- Spread spectrum
- IEEE 802.11 and other Part 15 license-exempt systems adaptable for
Amateur Radio
- Using TCP/IP networking over Amateur Radio
- Mesh and peer to peer wireless networking
- Emergency and Homeland Defense backup digital communications in Amateur
Radio
- Updates on AX.25 and other wireless networking protocols
- Topics that advanced the Amateur Radio art
Submission Guide Lines
Anyone interested in digital communications is invited to submit a paper for
publication in the Conference Proceedings. Presentation at the Conference is
not required for publication. If you know of someone who is doing great
things with digital communications, be sure to personally tell them about
this!See?above?for deadlines and where to submit your paper.Some quick
guidelines:
- Papers should be on 8-1/2 X 11 inch paper with the following margins:
left and right, 0.75 inch; top, 0.8 inch; and bottom, 1 inch (very important).
- Structure of paper should be (see single column example below, two
column should follow a similar format):
- Title
- Author(s) with affiliation
- Abstract (200 words or less)
- Key words (3-5)
- Body
- Reference List
- Papers can be in one- or two-column format.
- Use 12-point Times Roman for the main body of text;?do not?number pages.
- Photos and drawings should have good contrast. Note: a photocopy gives
a good indication of print quality.
- Electronic submissions can be made in any of the following formats:
- Adobe Acrobat PDF;
- Microsoft Word
- Reference citations and other topics not explicitly discussed in this
list should follow a recognized standard format (?APA?, IEEE, etc).
- A biographical page is to be included with the manuscript. It should
contain Name, Address, Phone, and E-mail for each author as well as a short
descriptive paragraph about the first author. The bio page will be used to
contact authors concerning the conference and presentation schedule.
Release form:
A formal release form is not required, but indicate that the paper is being
sent for use in the Proceedings of the ARRL and TAPR Digital Communications
Conference. You are only giving permission for your paper to be printed in
the Proceedings.Example Single Column Page Layout?
Two column would be similar in nature, but with two columns.?View Paper
Example
------------------------------
Message: 2
Date: Tue, 9 Aug 2016 10:13:21 +0200
From: Dani EA4GPZ <daniel@xxxxxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] Nusat-1 and Nusat2
Message-ID: <dc46af07-b884-2956-ada7-0ce0e1be7c78@xxxxxxxx.xxx>
Content-Type: text/plain; charset=windows-1252
El 09/08/16 a las 04:31, Scott escribi?:
> Telemetry from both of those satellites is quite active; while it's fun
> receiving the RF and pulling out the raw hex data, unfortunately there
> is currently NOT a decoder that I am aware of to display meaningful values.
>
> The bulk of the work to get us this far was done by Dani Estevez. His
> work is extraordinary and is documented at:
>
> http://destevez.net/2016/06/trying-to-decode-data-from-nusat/
Thanks for linking my blog, Scott. Unfortunately that's all we can do by
now.
The satellite uses CBOR to compress the telemetry into small binary
packets. Some of the guys at Satellogic (the company that operates the
satellites) were going to send me some details, but nothing received so
far. Probably it's not so easy and they're busy enough.
The downside is that we don't even have a way to check that the packets
are received without bit errors. The last 4 bytes of the packet seem to
be the ones which vary the most, so kudos if someone can recognise that
as a CRC of the packet. I tried for a while, but got nothing.
By the way, it's 40k baud, not 38k4. It eats a huge chunk of spectrum
(about 80kHz).
73,
Dani.
------------------------------
Message: 3
Date: Tue, 9 Aug 2016 20:50:37 +1200
From: Ross Whenmouth <ross@xxxxxxx.xx.xx>
To: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] Modulating UHF Retro Reflector at RF?
Message-ID: <5f660441-6ece-3531-7bf6-17c89e5b9f79@xxxxxxx.xx.xx>
Content-Type: text/plain; charset=windows-1252; format=flowed
Years ago I built a "moving target simulator" for a K-band CW (homodyne)
radar. I simply took the Gunnplexer module out of a K-band automatic
door opener (a 24.125 GHz resonant cavity complete with feed horn, Gunn
diode local oscillator and RX mixer diode) and fed my simulated doppler
AF signal into it's RX mixer diode (I did not energise the Gunn diode -
so the microwave oscillator was NOT operating).
When I illuminated it with 24 GHz RF from the radar, it produced good
reflections at RF + AF and RF - AF. I did not have access to good K-band
microwave test equipment so I was unable to quantify the strength of the
reflections or mixing conversion loss, etc.
So I would say that yes, subject to sufficient link budget, if you had
an antenna in orbit, coupled to a mixer diode, and you drove that mixer
diode with AF modulation, then that antenna will re-radiate the mixing
products of the RF illumination and AF modulation. Would this be an
interesting experiment for an ulta-low-power bird that does not have the
power budget to run an RF transmitter?
73 ZL2WRW
Ross Whenmouth
------------------------------
Message: 4
Date: Tue, 9 Aug 2016 05:08:42 -0400
From: Paul Stoetzer <n8hm@xxxx.xxx>
To: "Ronald G. Parsons" <w5rkn@xxxxx.xxx>
Cc: AMSAT-BB <AMSAT-BB@xxxxx.xxx>
Subject: Re: [amsat-bb] Uplink frequency of FM satellites
Message-ID:
<CABzOSOpAwC5_W6Tc3AdBD7=FwHD=R9G_xFOb0VTqArA60_wpBw@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
There's nothing to suggest that 145.850 isn't it for SO-50.
Measurements after launch showed that the uplink for AO-85 is about 435.172
MHz.
73,
Paul, N8HM
On Monday, August 8, 2016, Ronald G. Parsons <w5rkn@xxxxx.xxx> wrote:
> Is there any good current data on the actual center uplink frequency at
> the satellite of the current crop of FM satellites such as SO-50 and AO-85?
>
> Ron W5RKN
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx <javascript:;>. 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: Mon, 8 Aug 2016 19:56:59 -0700
From: "Paul - K6HR" <paul.hamradio@xxxxxxx.xxx>
To: "'Ronald G. Parsons'" <w5rkn@xxxxx.xxx>, "'AMSAT-BB'"
<AMSAT-BB@xxxxx.xxx>
Subject: Re: [amsat-bb] Uplink frequency of FM satellites
Message-ID: <2A622382187B4D8A9A264F5F8E4566A0@xxxxxx>
Content-Type: text/plain; charset="us-ascii"
Hi Ron,
I just reenlisted with AMSAT and I was sent a laminated page listing what I
assume is the latest information on sats and freqs.
I've attached a picture of the front and back.
Paul Delaney - K6HR
paul.hamradio@xxxxxxx.xxx
http://gw.k6hr.ampr.org:8080
-----Original Message-----
From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of Ronald G.
Parsons
Sent: Monday, August 08, 2016 7:25 PM
To: AMSAT-BB
Subject: [amsat-bb] Uplink frequency of FM satellites
Is there any good current data on the actual center uplink frequency at the
satellite of the current crop of FM satellites such as SO-50 and AO-85?
Ron W5RKN
_______________________________________________
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: 6
Date: Tue, 09 Aug 2016 08:23:35 -0400
From: "Rich/wa4bue" <richard.siff@xxxxxxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] Uplink frequency of FM satellites
Message-ID: <C12E3E2701A04F5AA418FA4E4648489B@xxxxxxx>
Content-Type: text/plain; format=flowed; charset=iso-8859-1;
reply-type=original
Hi all
Except for FD K4AMG has been inactive this summer on the birds.
Could someone update us on the birds and frequencies being used. We may
start this year with a new middle school as many as 40 students and a couple
of lectures in a STEM class. Again this year we will be at Great Bridge HS
electronics class W4GBH. The broadcast radio class has been cancelled,
W4FOS for maybe 2 years. However, we maintain a presence there with both HF
and VHF as a Chesapeake EOC back up and state EOC link. I am also assisting
with the install of their new 10 KW transmitter.
Thank you AMSAT.
God Bless
Rich
W4BUE
GROL
LM AMSAT
richard.siff@xxxxxxx.xxx
------------------------------
Message: 7
Date: Tue, 9 Aug 2016 15:54:15 +0100
From: Daniel Cussen <dan@xxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] Modulating UHF Retro Reflector at RF?
Message-ID:
<CAF3DnKgNoED4DBqm2-9QQvfJYE_8nFb5GqtZDBhSGWEf9Hx9=w@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
There is a CW radar in France on 143.050
I think some EME guys use these as high power beacons off the moon
http://www.itr-datanet.com/~pe1itr/pdf/The%20143.050MHz%20Graves%20Radar%20a%2
0VHF%20Beacon.pdf
------------------------------
Message: 8
Date: Tue, 9 Aug 2016 10:20:24 -0500
From: "Ronald G. Parsons" <w5rkn@xxxxx.xxx>
To: "Paul Stoetzer" <n8hm@xxxx.xxx>
Cc: AMSAT-BB <AMSAT-BB@xxxxx.xxx>
Subject: Re: [amsat-bb] Uplink frequency of FM satellites
Message-ID: <5188ACEEFB7B47ECA2D2559E7036DBE5@xxxxxxxxx>
Content-Type: text/plain; charset="UTF-8"
Thanks Paul,
I had heard that AO-85 was lower than the nominal, 435180, and did a short
test yesterday.
435180 gave acceptable audio and 435168 produced distorted and noisy audio.
I?ll try 435172. The satellite is so busy it?s hard to get a good test in.
Ron W5RKN
From: Paul Stoetzer
Sent: Tuesday, August 09, 2016 4:08 AM
To: Ronald G. Parsons
Cc: AMSAT-BB
Subject: Re: [amsat-bb] Uplink frequency of FM satellites
There's nothing to suggest that 145.850 isn't it for SO-50.
Measurements after launch showed that the uplink for AO-85 is about 435.172
MHz.
73,
Paul, N8HM
On Monday, August 8, 2016, Ronald G. Parsons <w5rkn@xxxxx.xxx> wrote:
Is there any good current data on the actual center uplink frequency at
the satellite of the current crop of FM satellites such as SO-50 and AO-85?
Ron W5RKN
_______________________________________________
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: 9
Date: Tue, 9 Aug 2016 11:50:44 -0500
From: "Ronald G. Parsons" <w5rkn@xxxxx.xxx>
To: "Paul Stoetzer" <n8hm@xxxx.xxx>
Cc: Dave Beumer W?DHB <dave@xxxxx.xxx>, AMSAT-BB <AMSAT-BB@xxxxx.xxx>
Subject: Re: [amsat-bb] Uplink frequency of FM satellites
Message-ID: <D8B99977BE294370A9426FAD8218FC4E@xxxxxxxxx>
Content-Type: text/plain; charset="UTF-8"
I had a little time to test just now before AO-85 got too busy. I was trying
to change a lot of things but at the time of the test, uplink 435175 LHCP
and LHCP on the downlink was the best. Of course a short time later RHCP was
better. "Tumbling Tumbleweeds"
Ron W5RKN
From: Ronald G. Parsons
Sent: Tuesday, August 09, 2016 10:20 AM
To: Paul Stoetzer
Cc: AMSAT-BB
Subject: Re: [amsat-bb] Uplink frequency of FM satellites
Thanks Paul,
I had heard that AO-85 was lower than the nominal, 435180, and did a short
test yesterday.
435180 gave acceptable audio and 435168 produced distorted and noisy audio.
I?ll try 435172. The satellite is so busy it?s hard to get a good test in.
Ron W5RKN
From: Paul Stoetzer
Sent: Tuesday, August 09, 2016 4:08 AM
To: Ronald G. Parsons
Cc: AMSAT-BB
Subject: Re: [amsat-bb] Uplink frequency of FM satellites
There's nothing to suggest that 145.850 isn't it for SO-50.
Measurements after launch showed that the uplink for AO-85 is about 435.172
MHz.
73,
Paul, N8HM
On Monday, August 8, 2016, Ronald G. Parsons <w5rkn@xxxxx.xxx> wrote:
Is there any good current data on the actual center uplink frequency at
the satellite of the current crop of FM satellites such as SO-50 and AO-85?
Ron W5RKN
_______________________________________________
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: 10
Date: Tue, 9 Aug 2016 19:27:22 +0200
From: "PA3GUO" <pa3guo@xxxxxxx.xx>
To: <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] Es'hail-2 re-scheduled for launch in Q3/2017
Message-ID: <000001d1f263$49b24900$dd16db00$@xxxxxxx.xx>
Content-Type: text/plain; charset="us-ascii"
Very sorry to see this fantastic new satellite getting delayed!
I consider it as a major boost to use of high frequencies by
satellite-radio amateurs (beyond the fact that it is a HEO sat).
Well, it IS still a great opportunity to look forward to!!
Henk, PA3GUO, The Netherlands
----
We have been informed by Es'hailSat Qatar Satellite company, that the
launch of Es'hail-2 with the first P4-A geostationary amateur radio
transponder is shifted to Q3/2017.
------------------------------
Message: 11
Date: Tue, 9 Aug 2016 19:17:37 +0000 (UTC)
From: Roland Zurmely <py4zbz@xxxxx.xxx>
To: AMSAT BB <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Modulating UHF Retro Reflector at RF?
Message-ID:
<1682678046.12003427.1470770257196.JavaMail.yahoo@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
> Daniel Cussen dan at post.com?> Tue Aug 9 14:54:15 UTC 2016
> There is a CW radar in France on 143.050
> I think some EME guys use these as high power beacons off the moon
Yes ! Graves radar received in Brazil:
<http://www.qsl.net/py4zbz/graves.htm>
73 de Roland PY4ZBZ
------------------------------
Message: 12
Date: Tue, 9 Aug 2016 22:16:18 +0200
From: Erich Eichmann <erich.eichmann@xxxxxxxx.xx>
To: "Ronald G. Parsons" <w5rkn@xxxxx.xxx>, AMSAT-BB@xxxxx.xxx
Subject: Re: [amsat-bb] Uplink frequency of FM satellites
Message-ID: <4edf048b-ee44-fd77-b87b-04ce478180ad@xxxxxxxx.xx>
Content-Type: text/plain; charset=utf-8; format=flowed
Ron,
if you use SatPC32 you can use the "Upl. Calibr." controls in menu CAT
to correct the uplink frequency in steps of 10, 100 and 1000 Hz (while
you are transmitting) to check which uplink works best. The controls are
disabled with FM-Sats by default. To enable them also for FM sats click
the "V" control to "V+".
73s, Erich, DK1TB
Am 09.08.2016 um 18:50 schrieb Ronald G. Parsons:
> I had a little time to test just now before AO-85 got too busy. I was
trying to change a lot of things but at the time of the test, uplink 435175
LHCP and LHCP on the downlink was the best. Of course a short time later
RHCP was better. "Tumbling Tumbleweeds"
> Ron W5RKN
>
> From: Ronald G. Parsons
> Sent: Tuesday, August 09, 2016 10:20 AM
> To: Paul Stoetzer
> Cc: AMSAT-BB
> Subject: Re: [amsat-bb] Uplink frequency of FM satellites
>
> Thanks Paul,
> I had heard that AO-85 was lower than the nominal, 435180, and did a short
test yesterday.
> 435180 gave acceptable audio and 435168 produced distorted and noisy audio.
> I?ll try 435172. The satellite is so busy it?s hard to get a good test in.
> Ron W5RKN
> From: Paul Stoetzer
> Sent: Tuesday, August 09, 2016 4:08 AM
> To: Ronald G. Parsons
> Cc: AMSAT-BB
> Subject: Re: [amsat-bb] Uplink frequency of FM satellites
>
> There's nothing to suggest that 145.850 isn't it for SO-50.
>
> Measurements after launch showed that the uplink for AO-85 is about
435.172 MHz.
>
> 73,
>
> Paul, N8HM
>
> On Monday, August 8, 2016, Ronald G. Parsons<w5rkn@xxxxx.xxx> wrote:
>
> Is there any good current data on the actual center uplink frequency at
the satellite of the current crop of FM satellites such as SO-50 and AO-85?
>
> Ron W5RKN
> _______________________________________________
> Sent viaAMSAT-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
> _______________________________________________
> Sent viaAMSAT-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: 13
Date: Tue, 9 Aug 2016 15:51:59 -0500
From: Dave Mann <cwo4mann@xxxxxxx.xxx>
To: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Light duty az-el rotators
Message-ID: <4E61E137-D60A-4562-B886-8455419FE869@xxxxxxx.xxx>
Content-Type: text/plain; charset=us-ascii
I'm going to start using the Arrow dual-band antenna with my FT-736. I've
ordered the EA4DX rotor control. Isn't there a combination of inexpensive
tv rotators which I can use? I remember using a "pass-thru" rotator set
when I was DA1BB; two rotators, one for azimuth and one for elevation.
Seems to me I bought them locally. Balanced the horizontal mast with a
weight at one end. That set up was with a Fritzel 2-m and 70-cm helical
set. The channel master rotors I've seen have a flat base. Looks like
Overkill. Any ideas?
73
Dave N4CVX
Sent from my iPad
------------------------------
Message: 14
Date: Tue, 9 Aug 2016 14:58:42 -0600
From: Robert McGwier <rwmcgwier@xxxxx.xxx>
To: PA3GUO <pa3guo@xxxxxxx.xx>
Cc: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] Es'hail-2 re-scheduled for launch in Q3/2017
Message-ID:
<CA+K5gzc540Dr7eNqa6ZFaoRuesMUAwuYS1w8DUYTH3T3GOSROQ@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
It is the nature of going to space usually.
I have one exception. ISRO told my company they wanted to go 6 months
earlier!!
We switched to SpaceX Falcon 9!!
On Tuesday, August 9, 2016, PA3GUO <pa3guo@xxxxxxx.xx> wrote:
> Very sorry to see this fantastic new satellite getting delayed!
> I consider it as a major boost to use of high frequencies by
> satellite-radio amateurs (beyond the fact that it is a HEO sat).
> Well, it IS still a great opportunity to look forward to!!
>
> Henk, PA3GUO, The Netherlands
>
> ----
>
> We have been informed by Es'hailSat Qatar Satellite company, that the
> launch of Es'hail-2 with the first P4-A geostationary amateur radio
> transponder is shifted to Q3/2017.
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx <javascript:;>. 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
>
--
Bob McGwier
Founder, Federated Wireless, Inc
Founder and Technical Advisor, HawkEye 360, Inc
Research Professor Virginia Tech
Chief Scientist: The Ted and Karyn Hume Center for National Security and
Technology
Senior Member IEEE, Facebook: N4HYBob, ARS: N4HY
Faculty Advisor Virginia Tech Amateur Radio Assn. (K4KDJ)
Director of AMSAT
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Subject: Digest Footer
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End of AMSAT-BB Digest, Vol 11, Issue 253
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