Most smaller 2m antenna arrays used for eme have a half power beamwidth of approximately. There are phases you do not hear anything with horizontal polarization over hours and days you hear. With the satellite tracking software chosen, we made selections for the other major components in the 2. Moonbounce weak signal and astrophotography by mike cook. The project has built in accurate sun and moon tracking, but may be optionally interfaced to a computer for satellite tracking orbitron software and for eme doug mcarthurs vk3um autotrack software. But now that i have rebuilt my 144mhz antenna array it is a perfect opportunity to clean up and rebuild my moon tracking hardware. To participate in eme, you will need an antenna with at least 12 dbd gain, at least 150 watts. Gm4jjj, david with eme on 144 mhz, astronomy and his fine moon tracking software. A control module tracking capable of handling an eme station in real time automatic tracking of sources, traffic periods, doppler, polarization and rxtx management, signal level and antenna diagram measurements, common window, sky temperature. Jun 29, 2018 today on hamradiocomms i show my portable eme setup that i setup each time i want to make a contact. The wsjt softwares performance on such weak signals is pretty amazing. Skd file by using ztrack moon tracking and scheduling software.
In order to make an eme qso, the most important requirement is obviously that both stations can see the moon simultaneously what is called to have a common window. The mast, motorsactuators and tracking controllers have been fully rebuilt and adapted for eme by f1bho and f5djl for digital parts. Moonbounce eme scheduling sked and tracking software. Rotor control software category is a curation of 10 web resources on, pstrotator, rotorcraft, satellite tracking with winrotor. The tracking of radiosources the complete calculations for an eme budget or noise measurement. Moonsked was previously shareware, but i have decided it will now be free or donationware, with an option to donate if you wish to support the hosting site fees.
Previsat is a cross platform, open source satellite tracking software available for windows, linux, and macos x. I elected to use polar tracking for my eme operation. A full sm5cui would tracking that the entire disk of the sm5cui is illuminated at the observers location. Ea6vq, with eme info and very fine sound recordings. The idea is to design an antenna that will not contribute noise from other directions that will add to degradation of the signal received off the moon. The history a real challenge the bands how small a station visit ve2zaz eme some hints optimize noise figure jt65 the software moon tracking web references w5un mighty big antenna. This is a figure of merit calculation performed by most computer moon tracking programs that calculates the degradation dgrd in the eme signaltonoise, in db, at a. The pstrotator program can track the moon and the sun using internal algorithms.
Moonsked by gm4jjj the complete moonbounce scheduling and tracking solution for macintosh and windows and linux. Gjtracker antenna tracking program for windows the tracker program was rewritten in october 2008 using visual basic 6. A pic microcontroller is managing interface between eme software and tracking devices. The chosen location for the dish is not ideal for westpointing eme, but this is a temporary location for a few years, until the swimming pool disappears. The path loss from earth to moon back to earth at 1296mhz is a whopping 271db. Noise meter noise meter software for the noise meter tool by g8kbb that measure noise using a pc sound card and calculate noise figures by means of a calibrated noise source.
Today on hamradiocomms i show my portable eme setup that i setup each time i want to make a contact. Af9y mikes webpage mikes got a great webpage includes a cool helix antenna design for the lunar prospector, a dsp software program used for eme and a program used to make skeds including full station info for eme use. Moonsked complete eme tracking, scheduling program for macintosh and windows. Displays antenna squint angle, propagation delay, echo, and satellite eclipse depth. Eme fun software michael margaras sv1cal amateur radio. This becomes a critical parameter when designing a good antenna for eme use. Jtsync is a simple utility that provides the ability to synchronize your computer clock over a network with worldwide ntp. Eme fun antenna controller gets azimuth and elevation commands from my eme fun software see related article and rotates the antenna dish by switching azel rotoractuator supply polarity and counting pulses while in motion. My antenna array for 144 mhz is 4x6h which is four stacked 6element yagiantennas pa14462 with horizontal polarization. Moonbounce or earthmoonearth eme is a way of communicating by reflecting radio signals from the moon between two suitably equipped stations.
Reason was the heavy polarization changing of the eme signals that i recognized over the past years. For software, were using joe taylors wsjt application and the ham radio deluxe satellite tracking software to keep our antenna pointed at the moon. Roof tower to mount all of the antenna system components for portable operation. The easiest way to know where a satellite is standing relative to your position on earth, is to make use of tracking software. There are several software packages available that i will describe. You can also see that auto tracking is on, the current time in gmt is displayed and the ptt line is not currently active. One critical decision before i start is to select the type of moon tracking to implement. Rotator controller using arduino and pstrotator g4hsk. Tracking amateur radio peosat satellite experiments. Several other features of the program are related to this parking the antenna or shutdown the pc at the moonset or the sunset, stopping the rotor when the moon or the sun are below the horizon.
Ve7bqh comparison table of popular 50 mhz, 144mhz and 432mhz single, 2 and 4 bay antenna systems ve7bqh 9 element 50 mhz high gain yagi design with 50 ohm feed, capable of eme on the horizon. Eme fun software is basically a eme station manager which sets up the radios on my eme shack,tracks satellitesmoonsun, communicates with spid controller or my eme fun antenna controller board click for details, compensates doppler shift home,dx, reads map65wsjt files, monitors gpsdo 10 mhz status etc. There is also a satellite tracking program that includes moon tracking, eme. There is also a full report about this software written by bernd df2zc in his monthly newsletter. Utilizzando il software wsjt in modalita jt65b e possibile fare dei qso via luna anche con una singola antenna yagi e 100 w di potenza. Using this satellite tracker software, you can track satellites in real time, or in manual time mode. Gjtracker gjtracker is a antenna tracking program for windows written to be compatible. The controller could be used with all azel antenna setups that use. Moonsked for moonbounce scheduling and tracking written by david anderson gm4jjj. Moon tracking software eme important information about the. Using f1ehns emesystem for calculation, planning, tracking.
The 2 axes angular corrections plan the eme activity to prepare your skeds or traffic period. Moon tracking software eme important information about. Another advantage of the tracking software is that it can perform the doppler correction using the cat interface of your transceiver. A few years have passed since ive looked at this project. If your answer is yes then, believe it or not, you are capable of making a qso with ea6vq and other stations using the moon as a reflector. The peaks can theoretically be 6 db spy call apk the gain of the antenna alone over moon moon, flat ground. You can also use some default maps, or you can add your maps. If this is all the antenna was seeing, then 210 degrees would be the antenna temperature. These distances are shorter than the factory recommended which are 2. Dk5ew homepage waz 14 itu 28 locator jn48mb dok p29. Radio and antenna rotator control for autonomous trakcing. Dk7zb antennas i decided to change them for a 4 x 9el.
Software, modes, websites, calculators, user groups. You can also see that autotracking is on, the current time in. Software, nec antenna modeling at funet vk3ums tracking software at ve1alq website weaksignal news kiosk vhfuhfeme by w6pa0zn. Erp calculator for the holiday classic contest vhfdx logging software for win95. The other lines on the waterfall are very weak birdies. Russ, k2kxb with his 2 m eme station with a polar mount antenna. Useful eme software category is a curation of 11 web resources on, moonsked, eme system, linrad. A new moon would mean that the moons disk eme completely dark software tracking observers location.
Wsjt software from k1jt and time sync software for pc sequencer to switch everything in the proper order preamp at the antenna will be needed a few relays tr, polarity, preamp protection azimuth rotor, elevation rotor is also very helpful attention to detail where is the moon. Here is a collection of eme moonbounce stations in alphabetical order. Eme fun antenna controller michael margaras sv1cal. Trak sm this program locates the sun and moon in real time using a full set of ephemeris factors. Vk3um eme planner 383k moon tracking program for eme operations. Rotator controller using arduino and pstrotator when i first started my 2m eme experiments elevation and azimuth control of the antenna was done manually, using a plumbline and protractor for elevation and circular protractor for azimuth. Eme and vhf dxing ham radio stop amateur radio directory. By the way, you can also view the skeds from the vhfsched. Al7ob 432 eme big gun station 30 foot dish from alaska. Can use deep search table call3 file list of stations known to do eme for error.
Motion speed can be adjusted independently for azimuth and elevation. Ve2zaz january 2012 this presentation why moonbounce. I made my 1st moon bounce eme contact today june 17, 2018 using a single m2 12 element yagi. Pstrotator software for antenna rotators, by yo3dmu. Space yagi antenna array spaceclearance planning program for dos environments or in a dos window under windows space is a simple program that can be used to determine the approximate spatial clearance parameters of an array comprising any number of yagis, stacked vertically andor horizontally. The purpose of this project is to present a pic based project for accurate manual or automatic tracking of a dishbeam. The completed interface, displaying the moon position and antenna position. Most smaller 2m antenna arrays used for eme have a half power beamwidth of approximately 30 degrees for a single yagi to about 15 degrees for a four yagi array. First ever single yagi to single yagi eme first ever 6 meter eme small stations can now work eme 10 elements and 100 watts all you need now ive actually done it with 7 elements and 100 watts revolutionized moonbounce for good and brought it to the masses. Since the moon subtends an arc onehalf degree as seen from earth, the antenna is viewing a large portion of the noisy sky around the moon. Introduction to earthmoonearth eme communications, moon tracking software, 6m filters, 6m antenna construction. Gjtracker moon tracking software for windows, and space spreadsheet for locating vhf eme arrays.
Di fatto il programma di joe taylor ha aperto una nuova era nelle comunicazioni radioamatoriali via luna. If you have a typical tropoms antenna you are likely not to be capable of elevating it, but you still can make eme contacts when the moon is near the horizon. Fred fish memorial award grid checklist, automatically completed application form and interactive colored grid map. Today, 305 emers have built their own interface and are using it in 30 countries. F1duzs eme page f1ehn with his tracking program and weaksignal. The idea is to design an antenna that will not contribute noise from other directions that will add to. Fax and slowscan television software jvfax faxsstv for ibm pc 721k receives and transmits facsimile including wefax and slowscan tv. F1ehn eme moon tracking software the best satscape nova satellite tracking software in order to begin receiving signals from the satellites, you will need a satellite tracking program to know where and when they will be in view for monitoring. The 432 and above eme net meets saturday and sunday on 14. F2tu, dish design, construction and a lot more franck tonna, f5se with eme software. Do you have a directional antenna, a 2m ssb transceiver with 50 w output and a pc. Simply put, reflections from the policy information front of an eme software peaks and nulls at certain elevation angles when the antenna is pointed at the horizon.
Eme fun antenna controller gets azimuth and elevation commands from my eme fun software see related article and rotates the antennadish by switching azel rotoractuator supply polarity and counting pulses while in motion. Eme, or moonbounce as it is commonly known, is the most exotic means of communicating for radio amateurs, and is not to be compared to active satellite communications. A single yagi antenna pointing to the horizon normally allows to work eme till the moon is up to 15 or 18 degrees above the horizon. In addition to including location information for many vhf stations, it includes all known 6m eme stations. When i first started my 2m eme experiments elevation and azimuth control of the antenna was done manually, using a plumbline and protractor for elevation and circular protractor for azimuth. W7gj software downloads, including gjtracker moontracking. This system worked and had the added benefit of keeping me fit running between the shack and.
Does anybody know of budget minded solutions for the hardware or other good uses for this antenna. Includes information on constructing a suitable interface. The unit supports gps setting of datetimelatlong for field work. For information about pcb order, read the download page, please. Most of the bigger eme stations use an array of long boom yagis so i am pretty lucky to get this done with a single antenna and no elevation rotator. Useful eme software category is a curation of 11 web resources on. Doug vk3um was a friend from our days at unley high school during the mid 1950s, a common interest was that of radio and electronics leading to our introduction to ham radio through the 288mhz band now no longer part of australian allocations. Moonbounce on a budget by bob devarney w1icw winter 20. Contact made via signals bounced off the moon eme or earth moon earth first done by us army in project diana in 1946 first successful amateur contact made in 1960. Complete user instructions and associated gjtracker files are included in this zip file. That means, of the signal that goes out, the fraction that comes back to earth is 11,000,000,000,000,000,000,000,000,000.
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