If the sky is clear, the launch is supposed to be visible along the
Northeast Coast. From Washington, DC, azimuth is 140 degrees, elevation
about 10 degrees. NASA TV will cover the launch, and it will also be
streamed on the NASA web site www.nasa.gov/orbital
Perry, W3PK
On Tue, Apr 16, 2013 at
RT,
It is done all the time. Each antenna is 50 Ohms A 1/4 wavelength or any
other odd multiple will transform impedance. Two 100 Ohm impedance ends are
combined make 50 Ohms. The impedance of the transforming line = 50 Ohms
times 100 Ohms = 5000 to the 1/2 power is 70.7 Ohms. So 75 OHM (closest to
Or check out the plans (from the AO-40 days) and build notes on how to build
a circular phasing harness for the arrow 70cm crossed yagi on my website
http://home.comcast.net/~kb2m/
It also describes in detail how I used an MFJ 259 to fine tune the
harness...
73 Jeff kb2m
-Original Message
It can work well. At w0wtn we did circular for VHF and UHF in 2005.
There is a picture of the setup here:
http://www.w0wtn.org/img_browse.php?i=/images/field_day_2005/KK0SD_Sat_Ant.j
pg
I took the phasing info straight from the Satellite Experimenter's Handbook.
You might notice the S Band cavi
both trackers are sold...tu
bruce ke0lx
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I did it at field day last year, a couple of Arrow antennas with the 2
meter side set up for RHCP. Seemed to work real well on the analog birds.
Some 75 ohm coax does the matching, see a picture at
http://www.n0jy.org/images/IMG_20120623_215906.jpg
The picture was taken at night, so look closely
No reason why not. The power at each antenna will be 3 dB down, but you
will get an additional 3 dB of gain for using two antennas, so there
will be (nominally) no loss, assuming the antennas are oriented the same.
Or you could orient them 90 degrees apart, use an electrical 1/4 wave
matching
Nah, no worries! It's a fun mode, but can be a challenge tuning to keep up by
hand.
73, Drew KO4MA
-Original Message-
>From: Zach Leffke
>Sent: Apr 16, 2013 5:26 PM
>To: 'Andrew Glasbrenner' , amsat...@wd9ewk.net,
>amsat-bb@amsat.org
>Subject: RE: [amsat-bb] Re: Half-duplex on the Ken
Ahhh, my apologies Drew. I should have said previously uncommon modes instead
of unheard of modes. As I am relatively new to the Amateur Satellite
community, I'm sure there is plenty that I am unaware of, and this is an
example of that. Again, my apologies. I'm looking forward to seeing how
-Original Message-
>From: Zach Leffke
> This technology will allow previously unheard of modes of
>operation that could allow these types of HTs to complete a QSO. Imagine a
>software defined transponder that receives an uplink in FM and downlinks
>SSB.
I did that on AO-16 after we
An updated website with telemetry info is now available. Please note the
launch date/time may change. I hope others will consider taking up the
challenge to track 3 satellites operating on the same frequency and flying
extremely close to each other.
http://www.phonesat.org/packets.php
73 de NRDX
I have had some luck using the HT's SSB mode to listen to some of the
"Beepsat" beacons. This was done for educational purposes to show the
effects of polarization to non-believers. Using an arrow style antenna
(homebrew version) mounted on a tripod, we would dial in the CW beacon of a
bird with
Robert,
> My experiences though are with the FM easysats (including AO-51 of happy
> memory). Has anyone had any luck with this radio's SSB receivers for the
> linear birds?
>
>
I have a TH-F6A, and have used it as the downlink receiver when working
SSB via satellite. I use an FT-817ND as my upl
Yes. Patrick, WD9EWK, has some experience using the TH-F6A as a downlink
receiver. I made one QSO on VO-52 with a TH-F6A, FT-817, and Arrow antenna.
I haven't gotten out to work the satellites in a while. I need to get back
there,
Hear is audio of my QSO with NS1Z on VO-52 back on 10/22/12.
https
All,
Per Martha at the AMSAT Office, the entire block of AMSAT rooms for
Hamvention 2013 are now taken, and no more will be available.
73s,
Alan
WA4SCA
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Not an AMSAT-NA member
Someone earlier was asking about the TH-F6A.
As mater of terminology, is it called "half-duplex" or "cross-band split"?
The Kenwood TH-F6A has two receivers but will not work full duplex; you cannot
hear your own signal coming back down from the satellite.
What I do is use dual mode, so that b
I have both the Arrow and the Elk and am interested in trying them mounted
at a fixed elevation and would love to see pictures or
diagrams/explanations of how you have mounted the Arrow. The Elk is easy
and Ive got parts and info on how to mount it for rotor use.
TNX
Rick
W2JAZ
___
ST-1 Fox Delta tracker..factory assembled...factory case. $55 shipped to
your door.
ST-2 Fox Delta tracker...factory assembled..factory case. $135 shiped to
your door.
Pay pal preferred..tks es 73
Bruce ke0lx
willmarbro...@charter.net
___
Sent
Any reason why, using identical coax lengths, you could not transform the
impedance to 100 ohms and then use a T connector to sum both antenna signals
and
achieve 50 ohms to the radio? I know Transmit power will be 3 dB down at
either
antenna but is there any reason it will not work? Any ant
For the Satellites, it completely doesn't matter. At any given moment,
you only have 1 chance in 90 that you will have matching polarization.
So, if you plan to use the antenna for other than Satellites, set your
polarization
for that purpose (V for FM or H for SSB/CW).
My plan is to install 2
If you are planning to stay with the AMSAT group in Dayton, you need to
call me before 4/24. At that time, we lose the block. I will need your
room nights and a credit card to hold the room. Time is running out - make
that call! (301-589-6062)
--
73- Martha
Professor Sharlene Katz, WB6FFE and Professor James Flynn, WB9AWX
have received $25,000 from the Jet Propulsion Laboratory for a
CubeSat project, see
http://amsat-uk.org/2013/04/16/radio-amateurs-get-25000-for-cubesat/
Also on the AMSAT-UK site:
Video – The CanSat Leader Training Program
htt
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