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CX2SA > SATDIG 27.05.16 15:34l 878 Lines 33865 Bytes #999 (0) @ WW
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Subj: AMSAT-BB-digest V11 167
Path: IW8PGT<CX2SA
Sent: 160527/1322Z @:CX2SA.SAL.URY.SOAM #:44223 [Salto] FBB7.00e $:AMSATBB11167
From: CX2SA@CX2SA.SAL.URY.SOAM
To : SATDIG@WW
Today's Topics:
1. Re: HF-HF satellite (Alan)
2. Re: HF Satellite Transponder (?ilvinas Atko?i?nas)
3. Re: HF Satellite Transponder (M5AKA)
4. Re: AMSAT Demonstration Station at the Dayton HamventionRecap
(Paulo PV8DX)
5. Re: AMSAT Demonstration Station at the Dayton Hamvention
Recap (PY5LF)
6. Re: HF-HF satellite (horizon?) (Robert Bruninga)
7. Fw: HF-HF satellite (R.T.Liddy)
8. Re: HF-HF satellite (horizon?) (Andrew Glasbrenner)
9. Re: HF-HF satellite (Robert Switzer)
----------------------------------------------------------------------
Message: 1
Date: Fri, 27 May 2016 04:10:42 -0500
From: Alan <wa4sca@xxxxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] HF-HF satellite
Message-ID: <000001d1b7f7$a51d9700$ef58c500$@xxxxx.xxx>
Joe,
Some of the new dongles cover 10 meters, and the price is down below $100
for at least one, the
Airspy.
While not technically a receiver, I have a radio shack HTX-100, still seen
at larger hamfests for
$40-75, which would work well. I used it as part of my AO-40 telemetry
system. Don't recall I have
ever used it for TX.
73s,
Alan
WA4SCA
<-----Original Message-----
<From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of Joe
<Sent: Thursday, May 26, 2016 10:32 PM
<To: Andrew Glasbrenner <glasbrenner@xxxxxxxxxx.xxx>
<Cc: amsat-bb@xxxxx.xxx
<Subject: Re: [amsat-bb] HF-HF satellite
<
<example please?
<
<Joe WB9SBD
<Sig
<The Original Rolling Ball Clock
<Idle Tyme
<Idle-Tyme.com
<http://www.idle-tyme.com
<On 5/26/2016 10:26 PM, Andrew Glasbrenner wrote:
<> 10m all modes receivers are cheap.
<>
<> 73, Drew KO4MA
<>
<>> On May 26, 2016, at 11:09 PM, Joe <nss@xxx.xxx> wrote:
<>>
<>> I would just miss the full duplex possibility mode "A" gives you.
<>>
<>> Joe WB9SBD
<>> Sig
<>> The Original Rolling Ball Clock
<>> Idle Tyme
<>> Idle-Tyme.com
<>> http://www.idle-tyme.com
<>>> On 5/26/2016 9:20 PM, Greg D wrote:
<>>> Got my vote for 15 up and 10 down. RS-12 was my second satellite (RS-10
<>>> was the first).
<>>>
<>>> As noted, the entry to Ham radio is not via HF these days, but with no
<>>> HEO sats, one can stretch the footprint pretty well with an HF bird,
<>>> working it well below the horizon. That might attract more usage of the
<>>> HF bands, and revitalize a lost mode of communication with some really
<>>> bizarre propagation.
<>>>
<>>> Greg KO6TH
<>>>
<>>>
<>>> _______________________________________________
<>>> 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
<>> _______________________________________________
<>> 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
<>
<>
<>
<
<_______________________________________________
<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: 2
Date: Fri, 27 May 2016 13:15:56 +0300
From: ?ilvinas Atko?i?nas <zilvinas.atkociunas@xxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] HF Satellite Transponder
Message-ID:
<CAHFd=yYY=JyNL_F_YKtWgS1Od_-F=BiKF+oPWywnQaicG4nUQQ@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
Bit OT: 6m beacon too?
------------------------------
Message: 3
Date: Fri, 27 May 2016 10:37:52 +0000 (UTC)
From: M5AKA <m5aka@xxxxx.xx.xx>
To: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] HF Satellite Transponder
Message-ID:
<850125490.407185.1464345472616.JavaMail.yahoo@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
The 50 MHz band is right on the boundary between HF and VHF.
Now it can't be allocated as a Downlink since it isn't allocated to the
Amateur Satellite Service but what about an Uplink in that band ? It would
operate in a similar manner to OSCAR-7 Mode B which has a receiver outside
the ITU allocated Amateur Satellite segment.
A 50 to 29 MHz transponder would be good.
ITU WRC-19 will have an Agenda Item for a global Primary Amateur Allocation
at 50 MHz. Unfortunately that is for Terrestrial only not Satellite but
arguably that wouldn't prevent an uplink receiver being flown.
Clearly worth lobbying ARRL and IARU to work towards getting a Satellite
Downlink allocation at 50 MHz for future sats.
73 Trevor M5AKA
------------------------------
Message: 4
Date: Fri, 27 May 2016 07:46:34 -0400
From: "Paulo PV8DX" <paulopv8dx@xxxxx.xxx>
To: "Paul Stoetzer" <n8hm@xxxx.xxx>, <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] AMSAT Demonstration Station at the Dayton
HamventionRecap
Message-ID: <5D64804B8BC648E4AE715253C55B7EAC@xxxxxxxxxxxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
I Paul
Excellent report.
I was very happy to hear John K8YSE say:
Were present two distinguished friends. PY2DM and PY5LF
I thank you and also to KD8CAO by contact on Saturday.
Congratulations to AMSAT team.
73 de Paulo PV8DX
LABRE/ARRL
AMSAT-BR/AMSAT-NA member
FJ92pt - VUCC SAT
www.labre-rr.org
http://amsat-br.org/
Boa Vista-Roraima
pv8dx@xxxx.xxx
-----Mensagem Original-----
From: Paul Stoetzer
Sent: Thursday, May 26, 2016 11:31 PM
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] AMSAT Demonstration Station at the Dayton
HamventionRecap
Good evening,
This was my first year running the AMSAT demonstration station at the
Dayton Hamvention after Keith Pugh, W5IU, had run it for many years.
After volunteering at the demo station the past couple of years, I
knew what to expect: a poor horizon to the north (due to the arena),
high levels of RF (including lids running FM simplex inside the
satellite subband on 2m), and lots of fun demoing satellite operation
to curious newcomers as well as meeting many satellite operators I've
worked on the satellites in person.
The core of the demo station was similar to past years. I brought my
pair of Yaesu FT-817s (known fondly among many satellite operators as
a Yaesu FT-1634) as well as a Windows 10 tablet and a FUNcube Dongle
Pro+. The antenna was an Arrow II 146/437-10BP and I also brought a
cheap Optera camera tripod. In addition, John Papay, K8YSE, brought
his Icom IC-910H, laptop, and Arrow antenna on a speaker stand with a
mount that allowed a smooth way to change polarity throughout the
pass. With this mix of equipment, we were able to demonstrate several
methods of satellite operating: computer controlled Doppler tuning of
a transceiver designed for satellite operating, manual Doppler tuning
with a pair of VHF/UHF all-mode transceivers, and use of an SDR
receiver with a VHF/UHF all-mode receiver for full-duplex operating on
linear transponders.
The demo area was up and running by the time the outdoor areas of the
Hamvention opened at 8:00am on Friday morning. Our first pass was an
XW-2A pass at 8:17am, with K8YSE operating his IC-910H and KD8CAO
running the antenna. The demos were generally a two man operation with
one operator at the radio and one serving as the antenna rotor. After
this pass, we listened to the 70cm PSK31 signal from NO-84 and a few
packet bursts from the ISS using the FUNcube Dongle Pro+ and Windows
10 tablet before a pair of AO-85 passes and an XW-2F pass operated by
K8YSE.
By special request, the AO-73 transponder was activated a day area and
was available for Friday morning's demos. I operated the 10:51am pass
with my pair of Yaesu FT-817s. A video of this pass is available on
the AMSAT North America Facebook page:
https://www.facebook.com/groups/7828379515/permalink/10154235785829516/
Later, I operated an SO-50 and FO-29 pass with that pair of FT-817s as
well, but had to fight strong desense. After those two passes, I
grabbed a diplexer I had brought and placed it on the 2m transmit side
(to filter out the third harmonic from the transmitter) and
experienced no further desense problems with my setup. PY5LF captured
part of the SO-50 pass on video:
https://www.youtube.com/watch?v=wVPb1a9NqxQ K8YSE then operated the
rest of the FO-29, AO-7, and SO-50 passes that afternoon.
On Saturday morning, we opened with listening (and decoding a bit) to
the PSK31 beacon on NO-84. Unfortunately, we did not have HF transmit
capability. The signal from NO-84's PSK31 transponder is very good and
I highly recommend anyone who can transmit on 10m at 25-50 watts and
receive a 70cm FM signal give it a try.
After working an XW-2F pass with the pair of FT-817s, I decided to
give the SDR receiver a try and made one QSO each on XW-2C and XW-2A
using the SDR as a downlink receiver. This was the first time I had
tried doing this and it was fun, though I definitely need some more
practice with it! I also tried the SDR receiver on AO-73 and FO-29 and
made a couple of QSOs.
Shortly after the ARRL Youth Forum ended around noon, a large crowd
began to arrive at the demo area. Nine-year old Hope Lea, KM4IPF, who
had given a talk at the Youth Forum operated a pass of SO-50 around
12:19pm and made many QSOs from coast-to-coast. A video of this pass
is available from the AMSAT North America Facebook page:
https://www.facebook.com/james.g.lea/videos/10154297928734363/
After the SO-50 pass, we made several QSOs on FO-29 and then listened
to the SPROUT digitalker. The SPROUT digitalker is generally active on
Saturday passes. A video of this pass is available here:
https://www.youtube.com/watch?v=4FRNZkMb5yM
K8YSE then operated the Saturday afternoon passes of FO-29, AO-7, and
AO-85 with his Icom IC-910H setup. Highlights included several of us
passing around the microphone to work Paulo, PV8DX, in Brazil.
We got an early start on Sunday morning, operating a pass of AO-85 to
the northeast using my dual FT-817 setup just prior to 8:00am.
Although I was the only person in the demo area, I made three QSOs on
AO-85, holding the antenna myself and leaning over the table to
operate the radio. After this, I operated a pass of XW-2F around
8:30am. For the 8:44am XW-2A pass, ARRL Media & Public Relations
Manager Sean Kutzko, KX9X, took the microphone and made several QSOs
on that pass while I pointed the antenna. Although I did have a tripod
for the antenna, I was simply using the stock camera tripod mount and
had no way to adjust polarity. Since polarity is so critical while
operating satellites, the operators who pointed the antenna while
using my Arrow generally took the antenna off the tripod and held it
in their hand for quick polarity adjustments. K8YSE's speaker stand
mount demonstrated a good way to mount an Arrow antenna on a tripod
while retaining adequate control over polarity.
The next pass after this was a low western pass of XW-2C where I made
several QSOs. At 9:37am, we operated a pass of AO-85 and made QSOs
from coast-to-coast. A video of AMSAT VP of Operations Drew
Glasbrenner, KO4MA, at the microphone is available at:
https://www.youtube.com/watch?v=xrmzym39X5E
I would note that we were using a pair of FT-817s, barefoot, on that
pass and were able to make several QSOs with just 5 watts, mostly full
quieting. Though AO-85 can often take a bit more power to get in to,
QSOs using 5 watts and an Arrow antenna are very possible.
Passes of SO-50, AO-73, and FO-29 rounded out the demos for the
Hamvention and we were QRT at 12:12pm on Sunday, but not before
working MI6GTY in Northern Ireland on FO-29. It was nice to get Europe
in the log from the Dayton Hamvention demo station and it was our last
QSO of the 2016 Hamvention.
The AMSAT demo station has been a fun place to spend a majority of the
last three Dayton Hamventions and I would encourage all satellite
operators and those curious about satellite operation to visit the
station outside of Ball Arena (near the ARRL and AMSAT booth areas)
next May. Volunteers and guest operators are always sought!
A few pictures are posted on the AMSAT North America Facebook page:
https://www.facebook.com/groups/7828379515/permalink/10154235785829516/
(The AMSAT North America Facebook group is very active - in fact,
traffic has likely surpassed the traffic on the AMSAT-BB. If you are
not a member, I would encourage you to check it out
https://www.facebook.com/groups/7828379515/?qsefr=1)
Thanks to the following for volunteering at the demo station (and
apologies if I missed anyone):
Mark Hammond, N8MH
Drew Glasbrenner, KO4MA
John Papay, K8YSE
Doug Papay, KD8CAO
Art Payne, VE3GNF
Wyatt Dirks, AC0RA
Michael Kirkhart, KD8QBA
John Brier, KG4AKV
Jeff Griffin, KB2M
Hope Lea, KM4IPF
Sean Kutzko, KX9X
Thanks to the following for providing equipment for the demo station:
Mike Young, WB8CXO (Batteries)
Keith Pugh, W5IU (DC power distribution)
73,
Paul Stoetzer, N8HM
Secretary, AMSAT-NA
Washington, DC
P. S. I did not keep logs at the demo station, though I will remember
if I worked you! If you need a card or LoTW upload for EM79, please
let me know.
_______________________________________________
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: 5
Date: Fri, 27 May 2016 10:05:23 -0300
From: PY5LF <py5lf@xxxxxxxxxxxxx.xxx.xx>
To: Paul Stoetzer <n8hm@xxxx.xxx>
Cc: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] AMSAT Demonstration Station at the Dayton
Hamvention Recap
Message-ID:
<CAAy53m4XTiK0J6D_On8QsxFH-SHNc=mUv+ApWYYywv=Ykh=rnQ@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
Paul
Congratulations , you did it very well !
73
2016-05-27 0:31 GMT-03:00 Paul Stoetzer <n8hm@xxxx.xxx>:
> Good evening,
>
> This was my first year running the AMSAT demonstration station at the
> Dayton Hamvention after Keith Pugh, W5IU, had run it for many years.
> After volunteering at the demo station the past couple of years, I
> knew what to expect: a poor horizon to the north (due to the arena),
> high levels of RF (including lids running FM simplex inside the
> satellite subband on 2m), and lots of fun demoing satellite operation
> to curious newcomers as well as meeting many satellite operators I've
> worked on the satellites in person.
>
> The core of the demo station was similar to past years. I brought my
> pair of Yaesu FT-817s (known fondly among many satellite operators as
> a Yaesu FT-1634) as well as a Windows 10 tablet and a FUNcube Dongle
> Pro+. The antenna was an Arrow II 146/437-10BP and I also brought a
> cheap Optera camera tripod. In addition, John Papay, K8YSE, brought
> his Icom IC-910H, laptop, and Arrow antenna on a speaker stand with a
> mount that allowed a smooth way to change polarity throughout the
> pass. With this mix of equipment, we were able to demonstrate several
> methods of satellite operating: computer controlled Doppler tuning of
> a transceiver designed for satellite operating, manual Doppler tuning
> with a pair of VHF/UHF all-mode transceivers, and use of an SDR
> receiver with a VHF/UHF all-mode receiver for full-duplex operating on
> linear transponders.
>
> The demo area was up and running by the time the outdoor areas of the
> Hamvention opened at 8:00am on Friday morning. Our first pass was an
> XW-2A pass at 8:17am, with K8YSE operating his IC-910H and KD8CAO
> running the antenna. The demos were generally a two man operation with
> one operator at the radio and one serving as the antenna rotor. After
> this pass, we listened to the 70cm PSK31 signal from NO-84 and a few
> packet bursts from the ISS using the FUNcube Dongle Pro+ and Windows
> 10 tablet before a pair of AO-85 passes and an XW-2F pass operated by
> K8YSE.
>
> By special request, the AO-73 transponder was activated a day area and
> was available for Friday morning's demos. I operated the 10:51am pass
> with my pair of Yaesu FT-817s. A video of this pass is available on
> the AMSAT North America Facebook page:
> https://www.facebook.com/groups/7828379515/permalink/10154235785829516/
>
> Later, I operated an SO-50 and FO-29 pass with that pair of FT-817s as
> well, but had to fight strong desense. After those two passes, I
> grabbed a diplexer I had brought and placed it on the 2m transmit side
> (to filter out the third harmonic from the transmitter) and
> experienced no further desense problems with my setup. PY5LF captured
> part of the SO-50 pass on video:
> https://www.youtube.com/watch?v=wVPb1a9NqxQ K8YSE then operated the
> rest of the FO-29, AO-7, and SO-50 passes that afternoon.
>
> On Saturday morning, we opened with listening (and decoding a bit) to
> the PSK31 beacon on NO-84. Unfortunately, we did not have HF transmit
> capability. The signal from NO-84's PSK31 transponder is very good and
> I highly recommend anyone who can transmit on 10m at 25-50 watts and
> receive a 70cm FM signal give it a try.
>
> After working an XW-2F pass with the pair of FT-817s, I decided to
> give the SDR receiver a try and made one QSO each on XW-2C and XW-2A
> using the SDR as a downlink receiver. This was the first time I had
> tried doing this and it was fun, though I definitely need some more
> practice with it! I also tried the SDR receiver on AO-73 and FO-29 and
> made a couple of QSOs.
>
> Shortly after the ARRL Youth Forum ended around noon, a large crowd
> began to arrive at the demo area. Nine-year old Hope Lea, KM4IPF, who
> had given a talk at the Youth Forum operated a pass of SO-50 around
> 12:19pm and made many QSOs from coast-to-coast. A video of this pass
> is available from the AMSAT North America Facebook page:
> https://www.facebook.com/james.g.lea/videos/10154297928734363/
>
> After the SO-50 pass, we made several QSOs on FO-29 and then listened
> to the SPROUT digitalker. The SPROUT digitalker is generally active on
> Saturday passes. A video of this pass is available here:
> https://www.youtube.com/watch?v=4FRNZkMb5yM
>
> K8YSE then operated the Saturday afternoon passes of FO-29, AO-7, and
> AO-85 with his Icom IC-910H setup. Highlights included several of us
> passing around the microphone to work Paulo, PV8DX, in Brazil.
>
> We got an early start on Sunday morning, operating a pass of AO-85 to
> the northeast using my dual FT-817 setup just prior to 8:00am.
> Although I was the only person in the demo area, I made three QSOs on
> AO-85, holding the antenna myself and leaning over the table to
> operate the radio. After this, I operated a pass of XW-2F around
> 8:30am. For the 8:44am XW-2A pass, ARRL Media & Public Relations
> Manager Sean Kutzko, KX9X, took the microphone and made several QSOs
> on that pass while I pointed the antenna. Although I did have a tripod
> for the antenna, I was simply using the stock camera tripod mount and
> had no way to adjust polarity. Since polarity is so critical while
> operating satellites, the operators who pointed the antenna while
> using my Arrow generally took the antenna off the tripod and held it
> in their hand for quick polarity adjustments. K8YSE's speaker stand
> mount demonstrated a good way to mount an Arrow antenna on a tripod
> while retaining adequate control over polarity.
>
> The next pass after this was a low western pass of XW-2C where I made
> several QSOs. At 9:37am, we operated a pass of AO-85 and made QSOs
> from coast-to-coast. A video of AMSAT VP of Operations Drew
> Glasbrenner, KO4MA, at the microphone is available at:
> https://www.youtube.com/watch?v=xrmzym39X5E
>
> I would note that we were using a pair of FT-817s, barefoot, on that
> pass and were able to make several QSOs with just 5 watts, mostly full
> quieting. Though AO-85 can often take a bit more power to get in to,
> QSOs using 5 watts and an Arrow antenna are very possible.
>
> Passes of SO-50, AO-73, and FO-29 rounded out the demos for the
> Hamvention and we were QRT at 12:12pm on Sunday, but not before
> working MI6GTY in Northern Ireland on FO-29. It was nice to get Europe
> in the log from the Dayton Hamvention demo station and it was our last
> QSO of the 2016 Hamvention.
>
> The AMSAT demo station has been a fun place to spend a majority of the
> last three Dayton Hamventions and I would encourage all satellite
> operators and those curious about satellite operation to visit the
> station outside of Ball Arena (near the ARRL and AMSAT booth areas)
> next May. Volunteers and guest operators are always sought!
>
> A few pictures are posted on the AMSAT North America Facebook page:
> https://www.facebook.com/groups/7828379515/permalink/10154235785829516/
> (The AMSAT North America Facebook group is very active - in fact,
> traffic has likely surpassed the traffic on the AMSAT-BB. If you are
> not a member, I would encourage you to check it out
> https://www.facebook.com/groups/7828379515/?qsefr=1)
>
> Thanks to the following for volunteering at the demo station (and
> apologies if I missed anyone):
>
> Mark Hammond, N8MH
> Drew Glasbrenner, KO4MA
> John Papay, K8YSE
> Doug Papay, KD8CAO
> Art Payne, VE3GNF
> Wyatt Dirks, AC0RA
> Michael Kirkhart, KD8QBA
> John Brier, KG4AKV
> Jeff Griffin, KB2M
> Hope Lea, KM4IPF
> Sean Kutzko, KX9X
>
> Thanks to the following for providing equipment for the demo station:
>
> Mike Young, WB8CXO (Batteries)
> Keith Pugh, W5IU (DC power distribution)
>
> 73,
>
> Paul Stoetzer, N8HM
> Secretary, AMSAT-NA
> Washington, DC
>
> P. S. I did not keep logs at the demo station, though I will remember
> if I worked you! If you need a card or LoTW upload for EM79, please
> let me know.
> _______________________________________________
> 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: Fri, 27 May 2016 09:08:10 -0400
From: Robert Bruninga <bruninga@xxxx.xxx>
To: Amsat BB <AMSAT-BB@xxxxx.xxx>
Subject: Re: [amsat-bb] HF-HF satellite (horizon?)
Message-ID:
<CALdCfNLdSO-GJNCL7s7VpDEoH-pqswx=WTiQyhCsjOLk74Fb7w@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
> As noted, the entry to Ham radio is not via HF these days, but with no
> HEO sats, one can stretch the footprint pretty well with an HF bird,
Is this true? On one hand, it makes sense, but on the other hand, the
closer to the horizon the smaller the angle of incidence and the thicker
the ionosphere becomes. It woiuld seem to me maybe that this would bend
the user's horizon waves downward and therefore miss the satellite.
In other words, I'm thinking that an HF satellite with a footprint that is
2000 miles in diameter would in fact only have an operational range that is
less than that due to bending at those low angles.
On the other hand, some could argue that some ionospheric bending coiuld do
the opposite and enhance somewhat beyond the line of sight horizon... Which
is it?
Bob, WB4APR
------------------------------
Message: 7
Date: Fri, 27 May 2016 13:14:24 +0000 (UTC)
From: "R.T.Liddy" <k8bl@xxxxxxxxx.xxx>
To: AMSAT BB <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Fw: HF-HF satellite
Message-ID:
<1057104064.334192.1464354864069.JavaMail.yahoo@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
The RS Birds were fantastic! ?I worked a lot of Mode A with
a 2M all-mode to a Ringo Ranger and an HF XCVR to a
Tribander. ?Sat tracking in the early days was with an AMSAT
OSCAR-LOCATOR (Rotating mylar discs over a global map!!).
Once computerized, I used a Radio?Shack TRS-80 with a program
I think was called Sat-Tracker(??). Ah, the Good Ol' Days!!
73, ?Bob K8BL ? (AMSAT since 1979)
From: Alan <wa4sca@xxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Sent: Friday, May 27, 2016 5:10 AM
Subject: Re: [amsat-bb] HF-HF satellite
Joe,
Some of the new dongles cover 10 meters, and the price is down below $100
for at least one, the
Airspy.
While not technically a receiver, I have a radio shack HTX-100, still seen
at larger hamfests for
$40-75, which would work well.? I used it as part of my AO-40 telemetry
system.? Don't recall I have
ever used it for TX.
73s,
Alan
WA4SCA
<-----Original Message-----
<From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of Joe
<Sent: Thursday, May 26, 2016 10:32 PM
<To: Andrew Glasbrenner <glasbrenner@xxxxxxxxxx.xxx>
<Cc: amsat-bb@xxxxx.xxx
<Subject: Re: [amsat-bb] HF-HF satellite
<
<example please?
<
<Joe WB9SBD
<Sig
<The Original Rolling Ball Clock
<Idle Tyme
<Idle-Tyme.com
<http://www.idle-tyme.com
<On 5/26/2016 10:26 PM, Andrew Glasbrenner wrote:
<> 10m all modes receivers are cheap.
<>
<> 73, Drew KO4MA
<>
<>> On May 26, 2016, at 11:09 PM, Joe <nss@xxx.xxx> wrote:
<>>
<>> I would just miss the full duplex possibility mode "A" gives you.
<>>
<>> Joe WB9SBD
<>> Sig
<>> The Original Rolling Ball Clock
<>> Idle Tyme
<>> Idle-Tyme.com
<>> http://www.idle-tyme.com
<>>> On 5/26/2016 9:20 PM, Greg D wrote:
<>>> Got my vote for 15 up and 10 down.? RS-12 was my second satellite (RS-10
<>>> was the first).
<>>>
<>>> As noted, the entry to Ham radio is not via HF these days, but with no
<>>> HEO sats, one can stretch the footprint pretty well with an HF bird,
<>>> working it well below the horizon.? That might attract more usage of the
<>>> HF bands, and revitalize a lost mode of communication with some really
<>>> bizarre propagation.
<>>>
<>>> Greg? KO6TH
<>>>
<>>>
<>>> _______________________________________________
<>>> 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
<>> _______________________________________________
<>> 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
<>
<>
<>
<
<_______________________________________________
<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
_______________________________________________
Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
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expressed
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Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 8
Date: Fri, 27 May 2016 09:17:05 -0400
From: "Andrew Glasbrenner" <glasbrenner@xxxxxxxxxx.xxx>
To: "'Robert Bruninga'" <bruninga@xxxx.xxx>, "'Amsat BB'"
<AMSAT-BB@xxxxx.xxx>
Subject: Re: [amsat-bb] HF-HF satellite (horizon?)
Message-ID: <000001d1b81a$10b78c60$3226a520$@xxx>
Content-Type: text/plain; charset="us-ascii"
With RS-12, when 10m was open, the satellite could be hard to hear at lower
elevations. However, you could sometimes hear it (and use it) while it was
on the other side of the planet.
Here's a good write-up from DXCC #1 on RS-12:
http://www.amsat.org/amsat/archive/amsat-bb/200202/msg00707.html
73, Drew KO4MA
-----Original Message-----
From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of Robert
Bruninga
Sent: Friday, May 27, 2016 9:08 AM
To: Amsat BB
Subject: Re: [amsat-bb] HF-HF satellite (horizon?)
> As noted, the entry to Ham radio is not via HF these days, but with no
> HEO sats, one can stretch the footprint pretty well with an HF bird,
Is this true? On one hand, it makes sense, but on the other hand, the
closer to the horizon the smaller the angle of incidence and the thicker the
ionosphere becomes. It woiuld seem to me maybe that this would bend the
user's horizon waves downward and therefore miss the satellite.
In other words, I'm thinking that an HF satellite with a footprint that is
2000 miles in diameter would in fact only have an operational range that is
less than that due to bending at those low angles.
On the other hand, some could argue that some ionospheric bending coiuld do
the opposite and enhance somewhat beyond the line of sight horizon... Which
is it?
Bob, WB4APR
_______________________________________________
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------------------------------
Message: 9
Date: Fri, 27 May 2016 13:20:11 +0000 (UTC)
From: Robert Switzer <rs2atmink@xxxxx.xxx>
To: Joe <nss@xxx.xxx>, Andrew Glasbrenner <glasbrenner@xxxxxxxxxx.xxx>
Cc: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] HF-HF satellite
Message-ID:
<815112292.300724.1464355211281.JavaMail.yahoo@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
I would think the RTL-SDR might work on 10m
Rob KA2CZU
On Thursday, May 26, 2016 11:32 PM, Joe <nss@xxx.xxx> wrote:
example please?
Joe WB9SBD
Sig
The Original Rolling Ball Clock
Idle Tyme
Idle-Tyme.com
http://www.idle-tyme.com
On 5/26/2016 10:26 PM, Andrew Glasbrenner wrote:
> 10m all modes receivers are cheap.
>
> 73, Drew KO4MA
>
>> On May 26, 2016, at 11:09 PM, Joe <nss@xxx.xxx> wrote:
>>
>> I would just miss the full duplex possibility mode "A" gives you.
>>
>> Joe WB9SBD
>> Sig
>> The Original Rolling Ball Clock
>> Idle Tyme
>> Idle-Tyme.com
>> http://www.idle-tyme.com
>>> On 5/26/2016 9:20 PM, Greg D wrote:
>>> Got my vote for 15 up and 10 down.? RS-12 was my second satellite (RS-10
>>> was the first).
>>>
>>> As noted, the entry to Ham radio is not via HF these days, but with no
>>> HEO sats, one can stretch the footprint pretty well with an HF bird,
>>> working it well below the horizon.? That might attract more usage of the
>>> HF bands, and revitalize a lost mode of communication with some really
>>> bizarre propagation.
>>>
>>> Greg? KO6TH
>>>
>>>
>>> _______________________________________________
>>> 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
>> _______________________________________________
>> 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
>
>
>
_______________________________________________
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
------------------------------
Subject: Digest Footer
_______________________________________________
Sent via amsat-bb@xxxxx.xxx.
AMSAT-NA makes this open forum available to all interested persons worldwide
without requiring membership. Opinions expressed
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Not an AMSAT member? Join now to support the amateur satellite program!
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------------------------------
End of AMSAT-BB Digest, Vol 11, Issue 167
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