| |
CX2SA > SATDIG 02.06.16 20:47l 848 Lines 28487 Bytes #999 (0) @ WW
BID : AMSATBB11179
Read: GUEST
Subj: AMSAT-BB-digest V11 179
Path: IW8PGT<HB9CSR<IK2XDE<DB0RES<DB0EEO<DB0GOS<ON0AR<OZ5BBS<CX2SA
Sent: 160602/1829Z @:CX2SA.SAL.URY.SOAM #:44696 [Salto] FBB7.00e $:AMSATBB11179
From: CX2SA@CX2SA.SAL.URY.SOAM
To : SATDIG@WW
Today's Topics:
1. NO-84 APRStt? (Peter Laws N5UWY)
2. Re: NO-84 APRStt? (Paul Stoetzer)
3. Re: EsHail Microwave transponder satellite (Luc Leblanc)
4. Re: NO-84 APRStt? (Peter Laws N5UWY)
5. Re: EsHail Microwave transponder satellite (?ilvinas Atko?i?nas)
6. Re: EsHail Microwave transponder satellite (Edward R Cole)
7. EsHail Microwave transponder satellite (Remco)
8. Re: EsHail Microwave transponder satellite_ 2.4 Ghz / 10.5
Ghz dual-band feed (Michael R. Lengruesser)
9. Re: AMSAT @ White Mountain Hamfest (Show Low AZ), this
Saturday (Patrick STODDARD (WD9EWK/VA7EWK))
10. Re: NO-84 APRStt? (and darned beacons) (Robert Bruninga)
11. Re: NO-84 APRStt? (and darned beacons) (Peter Laws)
12. Purchased LVB tracker (Edward R Cole)
13. Re: NO-84 APRStt? (and darned beacons) (skristof@xxxxxxx.xxxx
----------------------------------------------------------------------
Message: 1
Date: Wed, 1 Jun 2016 19:49:08 -0500
From: Peter Laws N5UWY <n5uwy@xxxx.xxx>
To: AMSAT-BB <AMSAT-BB@xxxxx.xxx>
Subject: [amsat-bb] NO-84 APRStt?
Message-ID:
<CANVAiQ9L2KW8P87_qmfpsvyxC+sinPivKfund2bOfLRRBxwuxA@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
How often is that mode enabled? Just passed over EM15 and I could
hear occasional AX.25 on 145.825 but no answer from a DTMF burst ...
--
Peter Laws | N5UWY | plaws plaws net | Travel by Train!
------------------------------
Message: 2
Date: Wed, 1 Jun 2016 20:52:53 -0400
From: Paul Stoetzer <n8hm@xxxx.xxx>
To: Peter Laws N5UWY <n5uwy@xxxx.xxx>
Cc: AMSAT-BB <AMSAT-BB@xxxxx.xxx>
Subject: Re: [amsat-bb] NO-84 APRStt?
Message-ID:
<CABzOSOp6OFomdRCg-2gk+wuWSaP=5FzfaK6g+PcWAydwmWU58g@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
NO-84 only supports traditional APRS packets, when the digipeater is on.
Future satellites are planned with APRStt payloads. I defer to WB4APR
on that discussionh!
73,
Paul, N8HM
On Wed, Jun 1, 2016 at 8:49 PM, Peter Laws N5UWY <n5uwy@xxxx.xxx> wrote:
> How often is that mode enabled? Just passed over EM15 and I could
> hear occasional AX.25 on 145.825 but no answer from a DTMF burst ...
>
> --
> Peter Laws | N5UWY | plaws plaws net | Travel by Train!
> _______________________________________________
> 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: 3
Date: Thu, 02 Jun 2016 00:14:43 -0400
From: "Luc Leblanc" <lucleblanc6@xxxxxxxxx.xx>
To: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] EsHail Microwave transponder satellite
Message-ID: <574FB2B3.26362.335A766@xxxxxxxxxxx.xxxxxxxxx.xx>
Content-Type: text/plain; charset=ISO-8859-1
In the AO-40 era i was using this setup to mount one dish and one BBQ grill
antenna on the
same mount. I could also mount another smaller dish on this mounting.
See pictures on http://www.qsl.net/ve2dwe/
Luc Leblanc VE2DWE
> > I asked a manufacturer of feeds (...) and they said
> > a dual feed was not possible. Uplink is circular and
> > downlink is linear using a normal LNB.
>
> But linear is a subset of "circular", so, couldn?t we use a dish that is 40%
> larger (to make up the 3 dB loss of going linear) and use a linear feed on
> the uplink so it can be cross polarized with the downlink and thus get maybe
> 20 dB of isolation? Maybe that 20 dB of isolation is still not enough?
>
> Bob, WB4aPR
>
> However many Europeans may have one dish for TV anyway. It is relatively
> easy to mount two LNBs on one dish for 2 different satellite positions, so
> one dish for household TV with a second LNB for Eshail sat, The LNB that is
> offset from prime focus will see a smaller gain than prime focus so a
> slightly larger dish may be needed and a separate dedicated dish for
> circular uplink. That is not to say it could not be done, but to have both
> at the same focal point is not a good idea.
>
> A rotator is not needed for EsHail as it is proper geostationary.
>
> Zilvinas
> So do you currently have satellite TV, how big, and what satellite is it
> pointing at?
> Also what is your location?
>
> On 01/06/2016, Robert Bruninga <bruninga@xxxx.xxx> wrote:
> > Im not following this closely, but if the bands were cross polarized,
> > it should be possible...?
> > Bob, WB4APR
> >
> > -----Original Message-----
> > From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of John
> > Toscano
> > Sent: Wednesday, June 01, 2016 1:23 PM
> > To: Zilvinas Atkociunas
> > Cc: amsat-bb@xxxxx.xxx
> > Subject: Re: [amsat-bb] EsHail Microwave transponder satellite
> >
> > I don't think it is possible to create a dual-band dish feed that
> > covers
> > 2.4 and 10.5 GHz. AMSAT folks are working hard on a 5G/10G dual-band
> > feed, and that is difficult. Even more complicated is your desire to
> > use a commercial 10G satellite TV LNB as one of the two feeds. I think
> > you are going to have to use two antennas for those 2 bands. The 10G
> > dish with satellite TV LNB for one of them, and either a separate dish
> > or a loop yagi or something else for the uplink. A Yaesu Az/El rotor
> > can handle a pair of antennas, in fact it is almost a re
> >
> > On Wed, Jun 1, 2016 at 6:19 AM, Zilvinas Atkociunas <
> > zilvinas.atkociunas@xxxxx.xxx> wrote:
> >
> >> Hi all,
> >>
> >> Any ideas how to use two antennas with single dish ? (one of them SAT
> >> LNB)
> >>
> >> LY2SS
>
------------------------------
Message: 4
Date: Wed, 1 Jun 2016 22:35:57 -0500
From: Peter Laws N5UWY <n5uwy@xxxx.xxx>
To: AMSAT-BB <AMSAT-BB@xxxxx.xxx>
Subject: Re: [amsat-bb] NO-84 APRStt?
Message-ID:
<CANVAiQ8OvVL-rrcey=7AM7SgoFPF6aDa=6FOa0y0LiBwdkiqZA@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
On Wednesday, June 1, 2016, Paul Stoetzer <n8hm@xxxx.xxx> wrote:
> NO-84 only supports traditional APRS packets, when the digipeater is on.
>
> Future satellites are planned with APRStt payloads. I defer to WB4APR
> on that discussionh!
>
It was Qikcom-2 I was reading about and somehow designated it NO-84 (in my
defense, it's all the same people! :-) ).
Maybe WB4APR can update us on the status of the former (which is not the
latter!).
http://aprs.org/qikcom-2.html
--
Sent from Gmail Mobile
------------------------------
Message: 5
Date: Thu, 2 Jun 2016 09:21:58 +0300
From: ?ilvinas Atko?i?nas <zilvinas.atkociunas@xxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] EsHail Microwave transponder satellite
Message-ID:
<CAHFd=yam2QfsN_9CT_kwtD9EqS4=BdpdLLa8+4k9_NhnLzV-Tg@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
Dan,
I am thinking/leaning to solely portable antenna system (in both terms -
compact ant lightweight - even umbrella style(?) because I don't like the
idea of separate dishes/antennas.
At the moment I have these things bought:
for uplink hackrf + 4W PA http://tinyurl.com/zyrr2ow (will test soon)
for downlink same hackrf + Octagon PLL LNB
This will be simplex solution but I don't think it's bad idea considering
satellite constant position/orientation. (no Doppler/az/el tracking issues)
So time to think about antenna(s)...
Zilvis LY2SS in KO05Nq
2016-06-01 22:00 GMT+03:00 Daniel Cussen <dan@xxxx.xxx>:
> I asked a manufacturer of feeds (RFHAMDESIGN) and they said a dual
> feed was not possible. Uplink is circular and downlink is linear using
> a normal LNB.
>
> However many Europeans may have one dish for TV anyway. It is
> relatively easy to mount two LNBs on one dish for 2 different
> satellite positions, so one dish for household TV with a second LNB
> for Eshail sat, The LNB that is offset from prime focus will see a
> smaller gain than prime focus so a slightly larger dish may be needed
> and a separate dedicated dish for circular uplink. That is not to say
> it could not be done, but to have both at the same focal point is not
> a good idea.
>
> A rotator is not needed for EsHail as it is proper geostationary.
>
> Zilvinas
> So do you currently have satellite TV, how big, and what satellite is
> it pointing at?
> Also what is your location?
>
> On 01/06/2016, Robert Bruninga <bruninga@xxxx.xxx> wrote:
> > Im not following this closely, but if the bands were cross polarized, it
> > should be possible...?
> > Bob, WB4APR
> >
> > -----Original Message-----
> > From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of John
> Toscano
> > Sent: Wednesday, June 01, 2016 1:23 PM
> > To: ?ilvinas Atko?i?nas
> > Cc: amsat-bb@xxxxx.xxx
> > Subject: Re: [amsat-bb] EsHail Microwave transponder satellite
> >
> > I don't think it is possible to create a dual-band dish feed that covers
> > 2.4 and 10.5 GHz. AMSAT folks are working hard on a 5G/10G dual-band
> feed,
> > and that is difficult. Even more complicated is your desire to use a
> > commercial 10G satellite TV LNB as one of the two feeds. I think you are
> > going to have to use two antennas for those 2 bands. The 10G dish with
> > satellite TV LNB for one of them, and either a separate dish or a loop
> yagi
> > or something else for the uplink. A Yaesu Az/El rotor can handle a pair
> of
> > antennas, in fact it is almost a re
> >
> > On Wed, Jun 1, 2016 at 6:19 AM, ?ilvinas Atko?i?nas <
> > zilvinas.atkociunas@xxxxx.xxx> wrote:
> >
> >> Hi all,
> >>
> >> Any ideas how to use two antennas with single dish ? (one of them SAT
> >> LNB)
> >>
> >> LY2SS
> >>
> _______________________________________________
> 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: Thu, 02 Jun 2016 00:53:00 -0800
From: Edward R Cole <kl7uw@xxxxxxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] EsHail Microwave transponder satellite
Message-ID: <201606020853.u528r093020801@xxxxxxxxx.xxxxxxxxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"; format=flowed
Dual-band feed arrangements have been done on dishes used for eme. A
classic is 432/1296 feed of VK3UM or similar arrangement 432/2304:
crossed dipole feed on 432 with cyl 1296 horn in the center of a
large circular reflector plane. But higher in mw wg horn feeds are
normal. Hard to get two horns in the same spot (focus).
However, I have a cylindrical wg horn made by W1GHZ which feeds
24-GHz via wg into a smaller diameter wg section opening into a
larger section which is fed 10-GHz via wg coax probe. But this is
not designed for dual-band duplex operation.
At NASA duplex operation was accomplished using wg diplexers which
cut-off RF at a higher frequency thru phasing techniques. 2.115-GHz
Tx/2.295-GHz Rx.
Another famous NASA operation used something called a dichroic
plate. The plate was put across the mouth of a feehorn so that only
8.4 GHz signals would penetrate the fine holes in the plate but
reflect 2.2 GHz. The Plate was angled to reflect the lower frequency
to another horn positioned to look at the plate. Of course the dish
was 64m in diameter so the subreflector did not have to be small
(about 3m to memory). That was used in 1974 for an experiment on
MA-10 encounter at Venus.
I believe the 5G/10G sats are being designed with a 1m ground dish as
standard. 1m offset dishes are common to the current Direct-TV/Dish
Net market. Here in AK 1m to 1.2m dish is std on houses (I have a
1.2m). I also have our old Dish-Net dish which is 1.8m sitting on a
pole with nothing hooked up.
Unfortunately, ExHail will not be above horizon in Alaska.
73, Ed - KL7UW
http://www.kl7uw.com
"Kits made by KL7UW"
Dubus Mag business:
dubususa@xxxxx.xxx
------------------------------
Message: 7
Date: Thu, 2 Jun 2016 12:05:13 +0200
From: Remco <pa3fym@xxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] EsHail Microwave transponder satellite
Message-ID: <201606021205.13732.pa3fym@xxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"
Having posted my setup at the end of last month and
seeing that my mail program wrapped line feeds, decreasing
readibility, here again my description and perspective.
Es'hail2 will not differ from any other geostationary broadcast satellite
in a sense that it's a 'full duplex' repeater with some time delay.
I reckon this time delay inhibits actual full duplex operation,
just like the TV reporter for a 'live stand up' in the TV news via
a satellite link having an earplug with all audio except himself ('N-1').
For us amateurs this means no (significant) Doppler shift,
no LSB/USB issues etc.
Just point your dish once to 25.5E like (more than) thousands of
broadcast satellite viewers do (without technical knowledge at all ;-)
Downlink (10.5 GHz):
For narrow band usage frequency and stability is paramount.
For 10.5 GHz we're helped by the BC satellite industry, offering
cheap PLL LNB's with 'HDTV precision'.
Imho this precision needs to be increased by injection locking
the LNB PLL with e.g. a GPSDO due to the large multiplification
factor inside the LNB (e.g. for Octagon 361.111111).
Noise figures (NF) of these LNB's are somewhat higher on 10.5 GHz
due to (steep) wave guide cut off, but still usable, compared to
the ease and price.
Uplink (2.4 GHz):
A 10W BUC (block up converter) suffices with published specs of
the 2.4 GHz receiver above in conjunction with a ca. 75cm dish here.
I'm currenly developing a simple 2.4 GHz BUC and will use old UMTS pallets
to amplify the desired 2400 MHz output.
Picture of my UMTS pallets: http://remco.org/umts.jpg
Bear in mind, S-band power is cheap :-)
Antenna:
One dish, the larger the better. Not for the uplink, but for improving
dynamic range at the receiver (downlink) side.
I will use a surplus Triax 88cm dish (for portable / 'umbrella' use ;-),
f/D is around 0.6 (like most consumer BC satellite dishes).
Feed:
From my perspective the only challenge lies in the 2.4 GHz uplink.
That is, to make an S-band feed which phase center coincides with the
10.5 GHz LNB (which has its own 'feed' ;-)
I've no fear for isolation issues due to the large frequency difference.
I am told that circular polarisation (CP) is 'mandatory' for S-band
uplinks in general but can't find a verification for this,
perhaps somebody else?
Anyway, we're amateurs and creative. So when RHCP uplink is too
difficult we make a linear antenna and increase uplink power with 3 dB ;-)
But, I follow the published receiver specifications . . .
Last week I made a 6 turn LHCP 2.4 GHz helix.
(Rule of thumb seems to be 1 turn per 0.1 f/D)
Phase center of such a helix is a bit 'foggy' but from what I read lies
somewhere between the first and second turn.
I've some issues with matching it due to some mechanical boundary conditions
of the helix feed point in conjunction with the mounted downlink LNB and
relative position of the helix.
There is an additional 'transmission line' involved and
a 'normal' 1/4-wave stub doesn't give me the desired return loss.
So, this needs some fiddling, perhaps with a gamma match or so.
My approach is, the downlink LNB is mounted in the dish 'as usual' and
looks through the centre of the uplink helix.
Pictures of the prototype feed arrangement can be provided soon.
They are on a camera not present here at this moment of writing.
Remco PA3FYM
------------------------------
Message: 8
Date: Thu, 2 Jun 2016 11:23:31 +0200
From: "Michael R. Lengruesser" <mlengruesser@xxxxxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] EsHail Microwave transponder satellite_ 2.4
Ghz / 10.5 Ghz dual-band feed
Message-ID: <4966f45d-e844-ec58-4366-d21eb1cb8d3a@xxxxxxxx.xxx>
Content-Type: text/plain; charset=utf-8
Some of our members have dealt with this problem and there are already
the first positive results.
see attachment
It will appear to several publications on this topic in the near future
73 de
Michael R. Lengruesser, DD5ER
AMSAT-DL e.V.
-- International Satellites for
Communication, Science and Education --
mlengruesser@xxxxxxxx.xxx
http:/www.amsat-dl.org
Am 01.06.2016 um 19:22 schrieb John Toscano:
> I don't think it is possible to create a dual-band dish feed that covers
> 2.4 and 10.5 GHz. AMSAT folks are working hard on a 5G/10G dual-band feed,
> and that is difficult. Even more complicated is your desire to use a
> commercial 10G satellite TV LNB as one of the two feeds. I think you are
> going to have to use two antennas for those 2 bands. The 10G dish with
> satellite TV LNB for one of them, and either a separate dish or a loop yagi
> or something else for the uplink. A Yaesu Az/El rotor can handle a pair of
> antennas, in fact it is almost a re
>
> On Wed, Jun 1, 2016 at 6:19 AM, ?ilvinas Atko?i?nas <
> zilvinas.atkociunas@xxxxx.xxx> wrote:
>
>> Hi all,
>>
>> Any ideas how to use two antennas with single dish ? (one of them SAT LNB)
>>
>> Zilvis LY2SS
>>
>> 2016-05-31 17:28 GMT+03:00 Rico van Genugten <rico.van.genugten@xxxxx.xxx
>>> :
>>
>>> Hi Remco,
>>>
>>> Sounds like you made a lot of progress on your Es'HailSat2 groundstation
>>> already. I would be interested to learn more about your transverter
>> design
>>> and where you got the UMTS PA, and I'm sure some other people on this
>> list
>>> too. :)
>>>
>>> Rico PA3RVG
>>>
>>>
>>>
>>> On Tue, May 31, 2016 at 12:07 PM, Remco <pa3fym@xxxxx.xxx> wrote:
>>>
>>>>> What are other folks planning to use on the uplink 2400 MHz and the
>> down
>>>>> link at 10,489 MHz, for the narrowband linear transponder ?
>>>> I will use a cheap injection locked X-band PLL LNB with dielectric rod
>>>> and additional converter to let the NB transponder land inside one of
>> the
>>>> bands my transceivers accomodate.
>>>> For the S-band uplink a dedicated (simple!) TX converter is now
>>> prototyped.
>>>> Output of the converter will be around 5 dBm to be inserted in an old
>>> UMTS
>>>> (2.1 GHz) module, capable of delivering around 20 - 30W at 2400 MHz on
>>> the
>>>> bench with this drive. Of course uplink output can be tweaked.
>>>> I am also busy with the dual band feed, of which the downlink of course
>>> is
>>>> inside the LNB.
>>>>
>>>> For the uplink I made a 6 turn LHCP helix but am now fiddling with the
>>>> matching due to
>>>> mechanical boundary conditions. At this moment of writing I (still)
>>>> haven't a good match
>>>> but I reckon this mechanical issue will be solved soon.
>>>> Secondly I need to experiment with the phase centers of both up- and
>>>> downlink
>>>> to maximise overall efficiency. Even when I'm not able to equalise both
>>>> phase centers
>>>> I have some room in my uplink budget to compensate for suboptimal
>>>> illumination.
>>>> In my prototype the LNB looks 'through' the helix.
>>>> Antenna will be a Triax 88cm broadcast satellite dish with f/D of
>> around
>>>> 0.6.
>>>> All internal frequencies will be/are locked to GPS which allows my idea
>>> of
>>>> building a
>>>> SUT (satellite user terminal) [for portable use] in conjunction with
>> one
>>>> (1) transceiver.
>>>> In other words, my concept will be that Es'hail2 behaves like a normal
>>>> amateur band, albeit with some delay ;-)
>>>> Remco PA3FYM
>>>>
>>>>
>>>> _______________________________________________
>>>> 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
> 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: Thu, 2 Jun 2016 14:08:05 +0000
From: "Patrick STODDARD (WD9EWK/VA7EWK)" <amsat-bb@xxxxxx.xxx>
To: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] AMSAT @ White Mountain Hamfest (Show Low AZ),
this Saturday
Message-ID:
<CAN6TEUf353On_ODOX65Nqz_oUuRmyrpuSnEx=7c-C1DJiaPgEA@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
Rick,
I don't see any ISS passes for Saturday morning during the hamfest. I
mentioned that, since I sometimes see attempts by some stations to
send an APRS message to me during these events. If I can make my
location show up, that's what I shoot for with APRS at a hamfest.
On the other hand, if you are near the radio late Saturday afternoon,
I should be on some ISS passes from Petrified Forest National
Park in grid DM55. I am not planning to work the overnight ISS
passes wherever I happen to be late Saturday night or early
Sunday morning.
73!
Patrick WD9EWK/VA7EWK
http://www.wd9ewk.net/
Twitter: @xxxxxx
On Wednesday, June 1, 2016, Richard Tejera <Saguaroastro@xxx.xxx> wrote:
> Are there any good ISS passes during the hamfest? I thought the favorable
> passes are still in the evening?
>
> It's a busy day for me but I may be able to work an early pass.
>
> Rick Tejera K7TEJ
> Saguaro Astronomy Club
> www.SaguaroAstro.org
> Thunderbird Amateur Radio Club
> www.w7tbc.org
>
>
>
------------------------------
Message: 10
Date: Thu, 2 Jun 2016 11:54:24 -0400
From: Robert Bruninga <bruninga@xxxx.xxx>
To: AMSAT-BB <AMSAT-BB@xxxxx.xxx>
Subject: Re: [amsat-bb] NO-84 APRStt? (and darned beacons)
Message-ID: <54a0a59aacce7101ce5ccad5bcb29b5b@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
> It was Qikcom-2 I was reading about...
> Maybe WB4APR can update us on the status of the former...
> http://aprs.org/qikcom-2.html
It is fully integrated and will launch on the same launcher as the two
AMSAT FOX satellites no sooner than August.
Other than that, I know practically nothing since it was impossible to get
a non-disclosure-agreement through the Naval Academy's bureaucracy in
under a year. We developed and delieverd the flight unit long before
there was any progress on the paperwork.
Got my fingers crossed. If it works, it will be the usual PSAT digipeater
but will also have a DTMF uplink for Grids and Messages and a Voice
downlink of same while also converting them to APRS packets too.
We will probably leave the DIGI off and leave it in DTMF and Voice mode
due to so many unattended worthless beacons on the uplink that would cut
into useful live human contact time...
Bob, WB4APR
------------------------------
Message: 11
Date: Thu, 2 Jun 2016 11:27:41 -0500
From: Peter Laws <plaws0@xxxxx.xxx>
To: Robert Bruninga <bruninga@xxxx.xxx>
Cc: AMSAT-BB <AMSAT-BB@xxxxx.xxx>
Subject: Re: [amsat-bb] NO-84 APRStt? (and darned beacons)
Message-ID:
<CANVAiQ9ypY=aqRVKBxdJY89pns5P+Jy0Fm7qpbvfUs6+SD1UFA@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
On Thu, Jun 2, 2016 at 10:54 AM, Robert Bruninga <bruninga@xxxx.xxx> wrote:
>> It was Qikcom-2 I was reading about...
>> Maybe WB4APR can update us on the status of the former...
>> http://aprs.org/qikcom-2.html
>
> It is fully integrated and will launch on the same launcher as the two
> AMSAT FOX satellites no sooner than August.
>
Great to hear!
> We will probably leave the DIGI off and leave it in DTMF and Voice mode
> due to so many unattended worthless beacons on the uplink that would cut
> into useful live human contact time...
For whatever reason, the DTMF thing really intrigues me so I am really
looking forward to trying it.
--
Peter Laws | N5UWY | plaws plaws net | Travel by Train!
------------------------------
Message: 12
Date: Thu, 02 Jun 2016 10:07:48 -0800
From: Edward R Cole <kl7uw@xxxxxxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Purchased LVB tracker
Message-ID: <201606021807.u52I7nNg025642@xxxxxxxxx.xxxxxxxxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"; format=flowed
I decided to backup my plans to use a very old Unitrac-2000 by
purchasing a LVB tracker while in stock at Amsat. If I have problems
getting the Unitrac working I can then just use the LVB in its place.
Only difference is LVB does not support auto-tuning which the Unitrac
handles along with auto-track.
If successful with the Unitrac, then I will offer the LVB for sale.
73, Ed - KL7UW
http://www.kl7uw.com
"Kits made by KL7UW"
Dubus Mag business:
dubususa@xxxxx.xxx
------------------------------
Message: 13
Date: Thu, 02 Jun 2016 14:27:15 -0400
From: skristof@xxxxxxx.xxx
To: AMSAT-BB <AMSAT-BB@xxxxx.xxx>
Subject: Re: [amsat-bb] NO-84 APRStt? (and darned beacons)
Message-ID: <fb488d6e4a50119ed9ed0efa8c304790@xxxxxxx.xxx>
Content-Type: text/plain; charset=US-ASCII
The pessimist in me thinks that some crazy person will figure out a way
to do a 24/7 DTMF beacon.
I'm not that smart, but someone probably is.
Steve AI9IN
On 2016-06-02 11:54, Robert Bruninga wrote:
>> It was Qikcom-2 I was reading about...
>> Maybe WB4APR can update us on the status of the former...
>> http://aprs.org/qikcom-2.html
>
> It is fully integrated and will launch on the same launcher as the two
> AMSAT FOX satellites no sooner than August.
>
> Other than that, I know practically nothing since it was impossible to get
> a non-disclosure-agreement through the Naval Academy's bureaucracy in
> under a year. We developed and delieverd the flight unit long before
> there was any progress on the paperwork.
>
> Got my fingers crossed. If it works, it will be the usual PSAT digipeater
> but will also have a DTMF uplink for Grids and Messages and a Voice
> downlink of same while also converting them to APRS packets too.
>
> We will probably leave the DIGI off and leave it in DTMF and Voice mode
> due to so many unattended worthless beacons on the uplink that would cut
> into useful live human contact time...
>
> Bob, WB4APR
> _______________________________________________
> 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
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!
http://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
End of AMSAT-BB Digest, Vol 11, Issue 179
*****************************************
Read previous mail | Read next mail
| |
