JOTA / JOTI round the corner and VU3CAV got a call to help get the station up and running for the annual event. In this video - VU3CAV testing VHF propagation with VU2YEP (ex VU3GTF) on IC-2000, and also on HF (FT-747) - though the quality on HF was bad. IC-2000 at a distance of over 50 Km\'s still gave a 5.9+20db performance with a 5 element Yagi Antenna. Pictures of Antenna and setup have been posted on vu2.in website. The contact was made using VU2DLR Repeater. [More] [Less]

On the night of Jan 19 2008 at 05:00 UTC I heard signals bouncing off of the moon. This was an experiment using the HF Active Auroral Research Program (HAARP) 3.6 MW transmitter system in Alaska, which can aim a lot of RF into the sky. At 05:00 they transmitted on 6.7925 MHz. The transmitter is on for 2 seconds and off for 3 seconds and repeated this cycle for an hour. The signal from Earth to Moon and back to Earth takes 2.7 seconds. So after the transmitter shuts off, if the signal is strong enough, we can hear the signal bouncing off of the moon. The signal strength was from 0 to about S3. The Alaska transmitter is heard at 30 over S9 at times.I was able to hear signals bouncing off of the moon using my Kenwood TS-2000 with a 40 meter dipole up about 25 feet. Not bad DX.Their calculation show that the power delivered at the terminals of a resonant 40 meter dipole antenna is 2.5 X 10-13 Watts or about -96 dBm. This is equivalent to about 4.4 microvolts across 70 ohms.That is 2.5 billion watts. They had to re-aim the beam every 3 minutes at the moon.ARRL Link:http://www.arrl.org/?artid=7958HAARP Moon bounce Link:http://www.haarp.alaska.edu/haarp/mbann.htmlHAARP Link:http://www.haarp.alaska.edu/haarp/index.html [More] [Less]

Presentation about AMSAT-DL and it\'s first first private satellite mission to Mars. Thanks to our Japanese friends from JAMSAT for translation.Playback speed increased by 30% to fit within the 10 minutes limit.213MB original file is here:http://www.jamsat.or.jp/With_AMSAT_P5A_to_Mars_J.mpgSee also:http://www.amsat-dl.orghttp://www.ticket-to-mars.org [More] [Less]

Collegamento di ik1ran del con iz5fso via VO52

Hoy fue realmente una mañana muy Feliz para nosotros,logramos poner a punto las Antenas portables, para Satélites de UHF y VHF,fue EMOCIONANTE.

YV6BFE, PS8RF and K3SZH talking via AMSAT OSCAR 7 ( AO-7 ). 01/05/2009 - 22:15 UTC.

ON7EQ heard Via AO-7 in GI84ow. 4757 Miles or 7616 Km. The audio is not in good quality. After contact with Hugo, EA8HB, Jean-Jacques, ON7EQ call. Photos credits:Phil Karn , KA9Q.

This a VHF-Hi/UHF Outdoor Scanner Antenna by RadioShack ( http://www.radioshack.com/product/index.jsp?productId=2103641&cp=2032052.2032075.2032078.2032098&parentPage=family ). The antenna is about 20 inches long. It is almost 30 feet above the ground. The pole is actually a sailboarding mast; an acquaintance of mine broke the pole at the bottom and gave it to me, so I just sawed the bad part off. I get very good reception with it. However, it sometimes receives too well and picks up interference on some channels. All in all though, it is a very good addition to any police scanner. I can listen to communications from five counties! The BNC outlet was bought off eBay. At the beginning of the video, I used my little old Uniden FRS400 to make a creative introduction. The scanner you see at the end of the video is a Uniden BCD396T Trunktracker IV ( http://www.uniden.com/products/productdetail.cfm?product=BCD396T&filter=Handheld ). I also have an RS Pro-91, which is why I have two BNC cords hooked up to the antenna. Note: the reason I have it black & white and high contrast at 0:57-1:00 is because I did not want to show my house, but at the same time, I wanted people to view the full size of the pole. ***My Homepage: http://auntbee09.googlepages.com/index.htm [More] [Less]

homemade 2meter antenna...works great..

A video guide of how to make a high performance,low cost HF multiband antenna for the radio amateur and shortwave enthusiast.

Homebrew 6 Element VHF OWA yagi by 9w2azv and 9w2wtf. Original post : http://please.name.my/92/10dbi-6-element-owa-yagi-antenna-for-2-meter-band-plan.html

The making of a 2 meter antenna

Homebrewed J-Pole antenna testing on air by VU2BDX with his handy.

The G5CD, by KG2RG

Here, we set up a real small station, using the MFJ-9420 20m monoband tranciever, and a dipole antenna at head height in some small trees. Managed to contact a few stations in about half an hour, including PD7X, RU3VV and J5MS. Located in Hornchurch, East London. JO01CM. Hard work sometimes, but its great what you can do with such a simple setup! 73. [More] [Less]

Here is a cheep antenna that i rebuild for some 2m SSB.....

Video shot at the W5LCC contest station