Amateur Radio Station K6JEB

from beyond the horizon

Archive for the 'antennas' Category

Antenna Launch at KY6R

Posted by Jack on 9th December 2012

Rich, KY6R, wanted to hang a doublet for 40m up as high as he could get it. So he asked me to bring my pneumatic antenna launcher over to hang the wires.

For more information on the pneumatic antenna launchers by Alan and Chris: http://www.antennalaunchers.com/

Peter, W6DEI, was behind the camera and did an awesome job (it was the first time he ever used a GoPro). The camera was a modified (4mm lense) GoPro Hero2 purchased from Rage Cams.

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20110430 KPH Visit – Point Reyes, California

Posted by Jack on 30th April 2011

International Marconi Day Sketch by Kyle, KI6FYW20110430_kph_visit_0120110430_kph_visit_0220110430_kph_visit_0320110430_kph_visit_0420110430_kph_visit_05
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20110430 KPH Visit, a set on Flickr.

Kyle and I went up to Point Reyes to visit the KPH Radio receiver site and operate CW (Morse) for International Marconi Day.

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The Antennas.us Quadrifilar Helix antenna works!!!

Posted by Jack on 22nd November 2008

I recorded this right off the air using my new
Quadrifilar Helix antenna from Antennas.us sitting about a foot above the ground (hi hi)outside. The one I got was with Right-Hand Circular Polarization (RHCP) and is rated for 50watts output.Quadrifilar Helix AntennaSeriously, just a foot off the ground and this Quadrifilar Helix antenna netted me two new AO-51 QSOsand here's my laughable transmitting antenna, just a 5/8 wave on the patio table

This is a recording of the LUSAT-OSCAR 19 (website) CW beacon which was on 437.120MHz:

LUSAT-OSCAR 19 20081123 1615UTC

Then Cubesat OSCAR-57 flew over:
cubesat-oscar_57_20081123_0153utc

The highlight of the evening was two AO-51 QSOs with W6BVB and WD9EWK! The Quadrifilar Helix antenna works!

I need to mount it high up. I could tell the house was in the way based on the angle and elevation VO-52and sudden drop on where the house is. Otherwise I believe I picked-up AOS at around 15 degrees elevation, which is quite right from the ground in the back yard and with the tall trees in that direction. I’m very happy! I was using 50 watts into a 5/8 vertical for my output on 2m.

I keep coming back and updating this blog entry with more sounds I record from this antenna. What a blast this has been. It’s like someone tore open a hole into space so I can actually hear. Here’s some Morse telemetry from RS-22 (website):
RS-22 20081123 0625UTC

For software, I’m tracking the satellites with Orbitron. Once I decide which bird to track, I switch over to the Ham Radio Deluxe Satellite Tracker which comes as a part of the awesome Ham Radio Deluxe suite; this I use for frequency control. I’m still mastering the linear inverting transponder for VO-52 but I have already successfully tuned-in a couple passes already; seems to be an active bird.
OrbitronHam Radio Deluxe Sat Tracker

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