Thursday, April 9, 2015

Georgia Qso party April 11, 12 2015


GEORGIA QSO Party this weekend. www.georgiaqsoparty.com


for all contests I recommend:http://www.hornucopia.com/contestcal/weeklycont.php

World Amateur Radio Day April 18, 2015


World Amateur Radio Day April 18th - http://www.arrl.org/news/view/wo​rld-amateur-radio-day-is-april-18


Wednesday, April 8, 2015

ARISS SSTV APRIL 11 and April 12 2015



Tuesday, March 31, 2015
SSTV in April for Cosmonautics day
The Russian ARISS team will be activating SSTV from the ISS service module as part of the celebration related to Cosmonautics Day. The setup of the hardware starts at 10:00 UTC on April 11 and activation should occur soon afterwards. The transmissions are currently scheduled to conclude at 21:30 UTC that same day. The transmissions should be active world wide on the standard down-link of 145.800 MHz.
More information on Cosmonautics day is available at http://en.wikipedia.org/wiki/Cosmonautics_Day.

**UPDATE** April 7

ARISS Russia coordinator has stated that the event will operate on April 12 as well during the same 10:00-21:30 UTC time frame.

ARISS-SSTV FREQUENCIES







ISS Frequencies

Voice and SSTV downlink - 145.800
Voice Uplink- ITU 1 (Europe, Africa & Russia) - 145.200
Voice Uplink - ITU 2&3 (Everywhere else) - 144.490
VHF Packet up and downlink - 145.825
UHF packet up and downlink - 437.550
U/v Repeater Uplink - 437.80
U/v Repeater downlink - 145.8

Vertical Dipole Antennas 10 and 15 meters




this is a dipole I am planning on making....

Vertical Dipole for 15 Meters and would love to make one also for 10 meters.

feet = 468/28.390 = 16.50 feet 10 meters

feet = 468/21.325 = 22 feet 15 meters

so watch for my videos on this...

I have 12 gauge shielded wire (good stuff) for verticals


ka1uln

Monday, April 6, 2015

OK/OM DX Contest, SSB: 1200Z, Apr 11 to 1200Z, Apr 12


Mode: SSB
Bands: 160, 80, 40, 20, 15, 10m
Classes: Single Op All Band (QRP/Low/High)
Single Op Single Band
Multi-Single
Multi-Two
SWL
Max power: HP: 1500 watts
LP: 100 watts
QRP: 5 watts
Exchange: OK/OM: RS + 3-letter district code
non-OK/OM: RS + Serial No.
Work stations: Once per band
QSO Points: OK/OM-Station: 2 points per QSO with same country
OK/OM-Station: 3 points per QSO with different country, same continent
OK/OM-Station: 5 points per QSO with different continent
non-OK/OM: 10 points per QSO with OK/OM station
non-OK/OM: 1 point per QSO same country
non-OK/OM: 3 points per QSO with different country, same continent
non-OK/OM: 5 points per QSO with different continent
Multipliers: Each OK/OM county once per band
Each country once per band
Score Calculation: Total score = total QSO points x total mults
Submit logs by: April 26, 2015
Upload log at: http://okomdx.crk.cz/index.php?page=send-log
Mail logs to: (none)
Find rules at: http://okomdx.crk.cz/index.php?page=english

How to work satellites with ham radio

Question: How did you setup your satellite station?

What do you use?
Radio, antenna, coax, computer

73 ka1uln



here is a make article i found... it is very clear and simple to understand
http://makezine.com/2009/07/22/catching-satellites-on-ham-radio/?thankyou=true

Materials
All you need is a VHF/UHF FM receiver (like a police scanner) or a VHF/UHF transceiver (like a Yaesu VX-7) and an antenna.


1. Specifying your location
Start by visiting Heavens-Above.com to check the orbit of the satellite you want to listen to and specify your location.

2. Specifying a satellite
Check the passes of your specific satellite or the ISS. AO-51, SO-50, AO-27, ISS. Make sure that the passes are shown for your correct location.
satelliteschart.jpg

3. Reading the chart
This pass chart shows the Start (when/where the satellite enters on the horizon), the Max. Altitude (when/where the satellite is at its highest point in the sky), and the End (when/where the satellite finishes it’s pass). Alt. is the altitude, the angle of the satellite from the observer’s horizon. 0 degrees is exactly on the horizon, and 90 degrees is directly above the observer. Az. is the Azimuth, the cardinal direction of the satellite from the observer’s point of view.

4. Picking a good pass
Satellites orbit the Earth at all sorts of angles, some that are very close to the horizon and some that are directly overhead. It is much easier to hear a satellite that passes directly overhead. To find a good sat pass, check the Max. Altitude Alt. for a pass that is 45 or higher (the higher the better). In our example, the second pass at 7:28 looks like a good one since the Max. Altitude Alt. is 77. The first pass at 5:52 has a Max. Altitude Alt. of only 12 which is very close to the horizon and difficult to pick up.

5. Finding the frequency
Satellite repeaters work with two different frequencies, an uplink and a downlink. You will listen to signals received on the downlink. If you wish to transmit, you’ll need to program in the uplink frequency as well. Follow the corresponding links to find the FM repeater frequencies of the satellites. The frequencies often change, so be sure to check the websites for the latest updates. AO-51, SO-50, AO-27, ISS. Tune your radio to the downlink frequency and you’re ready to go outside and listen (example: 435.300 MHz FM).
satellitewhipantenna copy.jpg

6. Aiming a whip antenna
If you’re using a whip antenna, you will not aim the antenna directly at the satellite. Instead, you’ll keep it perpendicular to the satellite. You can rotate the antenna by rotating your wrist to try and get a clearer signal.

7. Following the pass with the antenna
You will trace the path of the satellite orbit with the antenna using the Heavens-Above pass chart as a guide. At the Start Time, start with the antenna perpendicular to the Az. direction at the given Alt. For example, at 7:28, aim the antenna perpendicular to north at 10 degrees above the horizon. Trace the path of the satellite so that at the Max. Altitude Time the antenna is pointed in the corresponding location. For example, at 7:33, the antenna should be perpendicular to west northwest at 77 decrees above the horizon. Finish tracing the path of the satellite so that at the End Time the antenna is perpendicular to the corresponding location. For example at 7:39, the antenna will be perpendicular to south southwest at 10 degrees above the horizon. It can be very difficult trying to catch the satellites and you may spend a lot of time not hearing anything. As you trace the general path of the satellite with the antenna, move the antenna around in small side to side and up and down motions until you hear a bit of audio. Adjust the antenna to make the audio clearer.

8. Tuning the radio for the Doppler effect
The Doppler effect makes the frequency vary by .010 MHz. As you trace the path of the satellite with the antenna, you will also need to tune the radio back and forth plus or minus .010 MHz until you hear a good signal. Early in the pass, you will add .010 MHz, for example, if you’re listening on 435.300 MHz, you’ll need to tune the radio back and forth between 435.300 MHz and 435.310 MHz. Later in the pass, you will subtract .010 MHz, for example, you will tune the radio back and forth between 435.300 MHz and 435.290 MHz.

Here is an audio clip from my first satellite contacts. The contacts seem to be going pretty slowly, but while I was making them, I remember everything happening very quickly. It was a lot to tune the radio and maneuver the antenna while trying to write down the call signs of the contacts.
dianaeng
dianaeng

Fashion + Technology
Diana was a contestant on Project Runway season 2, graduated from RISD, and currently lives in New York City.


---------------------------------------------------------------------------------
Slow Scan Television (SSTV)



Personally speaking, I get excited when the crew decides to send images from the ISS.
There is something about receiving pictures directly from the Space Station that almost
makes my hair stand on end. As with many other ARISS transmissions, SSTV also takes
place on 145.800 MHz. ARISS images are overlayed with the call sign NA1SS.
Most FM transceivers have an external speaker or headphone jack. To catch a
glimpse of these amazing images, all you have to do is attach an audio cable between
this jack and the LINE or MIC input of your computer sound card. The sound card will
convert the analog FM signal to digital data.

There is free software available that will decode the data and display the images on
your computer monitor. If you are a Windows aficionado, try MMSSTV at
http://mmham-soft.amateur-radio.ca/mmsstv/ , or the mul-timode program Ham Radio Deluxe
at www.ham-radio-deluxe.com (the Digital Master 780 module)
or MultiPSK(http://f6cte.free.fr/index_anglais.htm).

Whichever program you choose, be sure to select the Robot 36 mode when receiving
ISS images. Depending on signal strength, the images may be noisy, but they are
still a thrill to see


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