I wanted to thank all those that came out for the meeting on January 3rd. We all had a blast. Jeff’s presentation on SATERN was very informative. Thanks also to Joe and Sean for show and tell of their jump kit!
I brought up at the meeting the idea of a simplex 2 meter frequency. After monitoring 146.535, it was decided by John and I to change the frequency, so QSY’s “Official” frequency at meetings, events, etc will be 147.525, no PL.
Looking forward to seeing everyone in February!
Kieran
N2MWE
This is a 2-el Yagi made from dipoles bent in the shape of a U, the longer element is the reflector, the input Z is 50 ohms and no matching network is needed.
Gain is about 6 dB, FB about 25-30 dB.
Resonant Frequency = 51.088, SWR = 1:1 measured with MFJ 269 Analyzer.
SWR is under 1.6 from 50.000 to 54.000 MHz.
Driven Element is 80in end to end with 1/2in space at feed point. The driven element also has a 10 1/4in elbow on both ends.
Reflector Element is 80 1/2in end to end, with 15 3/8in elbow on each end.
Width of antenna is 29 3/4in. Spacing between Driven element and Reflector element elbows is 4 1/8in. Make the SWR measurements by moving the reflector close to the driven element or away from driven element.
This was a fun project, coming from a Lawn Chair to an Antenna that works great, it has been tested and works great. Refer to website http://www.moxonantennaproject.com/design.htm
WA2WMJ JB
MOXON ANTENNA: Invented by Les Moxon G6XN (SK 2004), is sort of a two element yagi with the elements folded and spaced to eliminate the need for an impedance match.
A carefully optimized and constructed moxon can easily exceed the gain and bandwidth of a sloppily designed and constructed yagi. Also, the moxon is smaller than the typical yagi and much smaller than the typical J-pole antenna.
The Gain is typically 7-14 dBi, depending on accuracy of construction. Although this is a directional high gain antenna, it has a very large aperture with a high front to back ratio. If pointed directly up, this can make a decent satellite antenna.
Lawn Chair parts for the antenna.
Corners from lawn chair with wood separators, one screw is good to hold it together.
Almost an antenna.
Make both sides the same, connect the coax and have some fun
THIS ANTENNA WORKED BETTER THAN EXPECTED, Had fun making this antenna, the Moxon Calculator can be found on line, making measurements easy.
http://www.moxonantennaproject.com/design.htm
HAVE FUN AT THE NEXT QSY MEETING. WA2WMJ JB
At the last QSY meeting we talked a little about creating maps of call signs.
This following site lets you map call signs in a zip code: vanityhq.com. You can also create a certificate with you call sign if you like hanging wallpaper.
73 de Fred KC2QFR
As we discussed at the November 6, 2008 QSY Society meeting, I am investigating interest in a operating a special event station as part of the 2009 Centennial Celebration for Fire Towers in New York State, as well as the Hudson Valley Quadricentennial.
The Mt. Beacon Fire tower restoration is expected to be completed sometime in July 2009. See their website: www.beaconfiretower.org
If anyone has an interest in participating, and organizing a special event station at the site please contact me, Fred, KC2QFR via email: fred@dutchesstourism.com. It may become a qrp event so please indicate if you are are an active qrp operator.
If you have any other suggestions or interests in special events during 2009, the year that marks the 400th anniversary of Henry Hudson’s voyage along the river, please let me know.
Thanks & 73, Fred, KC2QFR
P.S. For those of you that do not know me I work for Dutchess County Tourism and we are preparing for the 400th celebrations in 2009.
QSY Society 