2m EME frequencies

Frequency Mode Name Notes; 144.0000 MHz: Start of band: 144.0000 MHz 144.0250 MHz: All modes: Including Satellite downlinks: 144.0250 MHz 144.1000 MHz: Telegraphy (including EME CW) 144.050 MHz Telegraphy Centre of Activity 144.100 MHz Random MS telegraphy calling: 144.1000 MHz 144.1500 MHz: Telegraphy and MGM: EME MGM activity: 144.1500 MHz 144.4000 MH Inexpensive and close -October 2-4, 2015 My elmers -Worldwide Winners 2014 EME contest: Dr Al Katz -K2UYH@tcnj.edu Dr Joe Taylor -K1JT@Princeton.edu Roger Shultz -NJ2R@Verizon.net Two contest weekends -November and December full moon EME is 12 hours/day x 365 days/yr passive reflecto On 2 meters, where JT65 EME activity is much greater, I suggest a 20 kHz range. In North America 144.140 is used as a calling frequency for the FSK441 meteor-scatter mode, so I have avoided that frequency 144 MHz (2 metres) Frequency: Modes and Possible Uses (please see the Notes below) 144.000 - 144.100: EME, Narrow Band Digital, CW, Weak Signal Modes. See Notes 1 and 2 below. JT65 centred on 144.085 JA Window. See Note 3. 144.100 - 144.180: CW, SSB, Narrow Band Digital, EME, Weak Signal Modes. See Note 1

Might be you have read in the past that only very large stations with four antenna arrays and Kw amplifiers (and skilled CW operators) were capable of working via EME (Earth-Moon-Earth). This was true till 2002, but nowadays thanks to the JT65B digital mode provided by the WSJT program, any station having an 2m. SSB transceiver capable of delivering 50 W and a directional antenna can make successful contacts via EME. And furthermore, no CW knowledge is required Some hints for Newcomers to Earth-Moon-Earth communication on 144 MHz. Introduction: We've been QRV now on 2m EME since almost one year (started end of May 2009). The following summarizes some basic findings from that one year of EME activity. on the 2m Ham Radio band EME with 8x17 M2 antennas. F5KDK, rcemep radio club EME 432-1296 MHz !! G3SEK. Info on polarity rotation and many other construction ideas; G4ZHI Home Page; G8WRB, with a large number of complete Eimac data sheets GJ4ICD, Worldwide Amateur Radio Information; GM4JJJ Home Page EME on 144 MHz and Astronomy -doppler shift moves frequency # listen on mutual doppler or echo - faraday pol rotation nil on 1296 # geometric pol rotation - no concern with circular pol -freq should be stable (~ hz)-best if know freq within < 500 hz-on0eme beacon on 1296.000-time not critical but in a few seconds-distance to moon varies (2 db) conclusion • eme is challenging. • on 23 cm all you need is a yagi, ~50 w. The. agreed segment for EME is 2301.900 - 2302.000 MHz. - The LO is a homebrew design and is reflocked to a 10 MHz GPS derived signal. using a VE1ALQ PLL. - IF frequency is 144 MHz. -The amplifier in use is a Spectrian amplifier running at a cool 120 W

ME3000-V 2m EME – VHF Amplifier ( 3KW – 144MHz ) | QRZ Now

2 metre band frequencies - you will know where to liste

EME - QSL.ne

EME Frequencies : Some operators claim that 144.020 is the EME calling frequency on 2 meters but generally, random signals appear all across 144.010 - 144.050. Alot of the time, EME contacts are scheduled ahead of time and the exact frequency is known. The EME frequency segments are 50.000 - 50.050 on 6 meters, 144.000 - 144.050 on 2 meters, 222.000 - 222.025 on 222 MHz, 432.000 - 432.070 on 70 cm and 1296.000 - 1296.050 on the 23 cm band. EME can also be found on all other bands above 1296 MHz For terrestrial use the FT8 decoder searches over the range -2.5 to +2.4s for clock offset DT between transmitting and receiving stations. When Decode after EME delay is checked on the WSJT-X Settings screen, the accessible DT range becomes -0.5 to +4.4 s. Just right for EME. FT8 uses 8-GFSK modulation with tones separated by 6.25.

144 MHz (2M) Page - RA

  1. even pause to think about it; JT65 EME contacts, on the other hand, are thrilling and fun. Over the past year, JT65 has been used to make at least several thousand EME QSOs on bands from 50 to 1296 MHz. On 2 meters, the most popular EME band worldwide, 300 Watts and a good yagi pointed at the Moon can enable you to work dozens of other EME
  2. My inspiration for EME came after reading the VHF/UHF section in the April 2010 edition of RADCOM where there is a mention of the EME QSO between G0KSC and RA6AX using relatively simple equipment and not fantastically high power. It also inspires me when I think of the potential for working countries which otherwise would not be possible on 2m, at least via traditional voice/phone modes
  3. These frequencies are within the Region 2 band plan for SSB,CW, and DM allocations, and shouldn't interfere with EME, beacons, or other common amateur uses. Please test the feasibility of using FT8 on these frequencies. If we can provide a watering holes for this mode, it should facilate unscheduled contacts, and may help us make better use.

EA6VQ - Get ready for 2m MoonBounce communication

2m 144 MHz CROSS Yagi Contest EME Antenna PA144-CROSS-20-6BP

2m UK Beacon: 144,430 kHz KiloHertz (kHz) 10^3 Hz Kent 70cm UK Beacon: 432,430 kHz KiloHertz (kHz) 10^3 Hz Kent JT65C example - 23cm UK Beacon: 1,296,800 kHz KiloHertz (kHz) 10^3 Hz Isle of Wight JT65A Frequencies via HFLink.com; See the ARRL Frequency Allocations page for the US use of 5 MHz MegaHertz (MHz) 10^6 Hz; Decoding Softwar WSJT EME - 2 CW EME Who's Earwigging? Distance/Bearing Locator Refresh Look back Update User details Refreshed 20Jun 05:22 ; Due to recent abuse of this system, you will beunable to post any messages until you complete the User Details page Exchanging any contact details on here before you're complete, invalidates the contact, and, if it's not WSJT via Moonbounce it doesn't belong here! Enter. ATV simplex with 427.250-MHz video carrier frequency: 432.00-432.07: EME (Earth-Moon-Earth) 432.07-432.10: Weak-signal CW: 432.10: 70-cm calling frequency: 432.10-432.30: Mixed-mode and weak-signal work: 432.30-432.40: Propagation beacons: 432.40-433.00: Mixed-mode and weak-signal work: 433.00-435.00: Auxiliary/repeater links: 435.00-438.00: Satellite only (internationally

When you say 'range limit' I took that as maximum distance, not frequency range. Here is their recommended band plan for two meters -. 2 Meters CW/SSB/Digital. 144.00-144.05 EME (CW) 144.05-144.06 Propagation beacons (old band plan) 144.06-144.10 General CW and weak signals. 144.10-144.20 EME and weak-signal SSB For 2m band it is between 150 to 7000°K. For successful EME contact on 144MHz, sky noise in direction of the Moon has to be less or equal 500°K. It takes approximately 2.52 seconds for a radio wave to travel from Earth to the Moon and back to Earth again. The Phase of the Moon has little to no effect on the EME Signals

DK3QN - Hints for EM

  1. LNA EME ATF531 for 2m and 70cm bands. In this project we created all-purpose LNAs for all QSO types (Tropo, Contest, EME, etc.) for 2m and 70cm bands. LNA was designed using ATF-531P8 E-pHEMT with High IP3 (37 dBm). Noise figure is much better than on PGA103+ or SPF5189z for 2m band (< 0.2dB). ATF-531P8 E-pHEMT is more reliable than low power.
  2. At moonrise, a 2m EME signal may be shifted up in frequency by as much as 350 Hz. The doppler slowly comes down, reaching zero when the moon is passing your longitude (due south or due north azimuth heading), then starts to shift in a negative direction, going as much as 350 Hz down by moonset. Always tune slightly with the RIT when looking for a station on random. AF9Y, Mike, has written a.
  3. EME Station 2.0 Part 12 - Station Software. October 14, 2020 by fkemmerer. 0. EME Operating Position. Software is a big part of most current EME stations. The JT65 Protocol, which was created by Joe Taylor, K1JT, has revolutionized EME operations. It has made it possible for modest single and two yagi stations to have lots of fun with EME

432 MHZ and Above EME Information and EME Amateur Radio Station Links. Sources for 432 MHz and Above EME Information and Links . Mission Statement To provide Links and Content for the 432 MHz and Above EME Community. Your Input of Content, in particular Technical, is welcome either in the form of link info but also as written text, pictures, and the like, if possible in .PDF format. But .TXT. EME on a Budget: Moonbounce for the Rest of Us. By. Paul Bock, K4MSG . PART I - INTRODUCTION, OPERATIONAL BASICS AND PROPAGATION . The purpose of this article is to provide radio amateurs with enough background information to understand the technical challenges involved in small-station digital EME on the 144 and 432 MHz bands Antennas: 2 X 7 ele M2 6M7 Full AZ / ELE plus polarity rotation when needed. 50 feet 1/2 inch heliax to shack. Amplifier: EME Initials: 56 DXCC: 31 Total 6 M EME QSOs: 87 WAC: 5 . 6 meter EME Array reconstructed March 2013 full AZ/El plus polarity rotation. The horizontal frame is constructed with a ABS covered fiberglass core and a aluminum support at the center. Antennas are spaced at 22.

In smart programs like the VK3UM EME Calculator solar flux numbers for a span of frequencies are gathered and lined up with an algorithm to derive relatively good calculated numbers for the amateur bands. In my article: Notes on VHF/UHF Antenna G/T, Dubus 2/2012 & Dubus Technik XII I show that in explicite way with sfi vs. frequency charts added On 10 GHz EME, both restricting conditions are partly broken. 3. Antenna beams. Observed from earth, the moon covers an average cross section of 0.5 º width. - in perigee with a distance of 356,400 km Þ 33'32 - in apogee with a distance of 406,700 km Þ 29'14 On 10 GHz a dish of 1mtr has a 3 dB angle of 2 º Reference for VHF/UHF amateur radio FM simplex frequencies for 6 Meter / 2 Meter / 1.25 meter / 70cm I've compiled some suggested channels and frequencies to use on these bands. Try something new, these frequencies should be stored in every HT or mobile. I enjoy messing around with VHF/UHF radios but repeaters usually bore me. These frequencies are compiled from the ARRL official band plan. ATV repeater input with 439.250-MHz video carrier frequency and repeater links. 442.00-445.00. Repeater inputs and outputs (local option) 445.00-447.00. Shared by auxiliary and control links, repeaters and simplex (local option) 446.00. National simplex frequency. 447.00-450.00

EA6VQ - Moon bounce (EME) informatio

144 Mhz EME - QRP with JT65B (WSJT) Equipment: Icom IC-746, 100w, 50 feet of LMR-400 coax, M2 2M12 yagi (12.8dBd). Total ERP = 1605 watts Cable Loss per 100 ft at Operating Frequency = 1.486 dB Cable Length = 50 Ft. Calculated Loss = 0.7 dB Power into Cable = 100 Watts Power out of Cable = 84.3 Watts Gain of Antenna = 12.8 dBd ERP of Antenna System = 1605.8 Watts 2M EME QSOs. DATE: TIME: FREQ. 1: 2304.100 is the National Weak-Signal Calling Frequency 2: 2305 - 2310 is allocated on a primary basis to Wireless CommunicationsServices (Part 27). Amateur operations in this segment, which are secondary, maynot be possible in all areas

An average figure for the path loss for 2m EME might be in the range of 252 dB. Transit Delays - at the speed of light, it takes between 2.4 and 2.7 seconds for our signals to travel from earth to the moon and back. Noise - the signals returning from the moon are extremely weak and must compete with natural (and man-made) noise sources. The sun and the noise from other stars in our galaxy. 2M PREAMP EME157B2 VER4.SKF 2M PREAMPLIFIER C2 2-10pF L2 L3 BF998R 1nF 100k 1nF 1nF 100k 47R 0.1uF 78L08 REGULATOR 1N4148 RELAYS BC547 2x 1N5711 1nF 1nF R1 SELECT 10uF 10uF RL1 RL2 +10 to +15vdc 1nF 680K 2N7000 47k 150R 10uF L1 L2 9 Turns 0.9mm TCW on a 5mm dia drill bit spaced 15mm long L1 16 Turns 0.3mm ECW on a T37-0 Core 270 degrees 2x.


Note 2: Consult with the WSJT community regarding frequencies for EME and Terrestrial operations as these change with modulation schemes. Note 3: Once contact is established on a Calling Frequency, operators should QSY to another frequency. For 144.200 MHz it is generally down for CW, and up for SSB. For 146.520 MHz FM, it is to any other clear FM simplex channel. Note 4: Seven frequencies on. Back in the day, frequency multiplier circuits were used extensively. $\endgroup$ - Mike Waters ♦ May 14 '18 at 3:05. 1 $\begingroup$ Yes, of course. Another reason why 40m antennas are some of the most commonly-sold, as they can also be used on 15m (3 x 7.000-7.200 works well on 21.000-21.450) $\endgroup$ - Scott Earle ♦ May 14 '18 at 3:16. 2 $\begingroup$ @MikeWaters that and it made. 8 + 8 element 2m - 144 MHz Low Noise Yagi antenna with highest possible gain for its length. Great for Terrestrial VHF Contest or EME work. Electrical Specifications 2 meter. Frequency Range: 144 - 145 MHz. Free Space Forward Gain: 13.5 dBi. Front to Back Ratio: 36 dB

2M LFA Antenna

DC9DZ: Project 2m EME - Power Amplifier (PA) using 4CX1000

2 meter Low noise Contest - EME Yagi antenna 10 + 10 Cross - Plus elements (20 elements). Excellent SWR on a built Cross Yagi Antenna with Low Noise pickup. Horizontal Antenna. On working frequencies less than 1.05. Perfect SWR on a built Cross Yagi PA144-CROSS-20-6BP. Vertical Antenna: On 144.1 to 144.5 less than 1.07. For XPOL variant of the same antenna look here. Top choice Cross - Plus. WSJT EME - 2. PingJockey Central WSJT Terrestrial WSJT EME - 1 CW EME Who's Earwigging? Distance/Bearing Locator Refresh Look back Update User details Refreshed 19Jun 01:31 ; Due to recent abuse of this system, you will be unable to post any messages until you complete the User Details page Exchanging any contact details on here before you're complete, invalidates the contact, and, if it's not. The 144 MHz EME NewsLetter by DF2ZC Issue 05/2021, Page 2 of 5 EA4CYQ/P Activating IM79 Square Early in 2019 Juan had already activated IM79 on EME, from IM79CA in the Spanish province of Badajoz. This was his first portable EME activity then. Since COVID stopped his plans for 2020 he is very happy that this year he could conduct another portable EME project. On 24 April EA4CYQ/P became QRV.

What Frequency Do I Use On 2 Meters? Ham Radio School

2M CW EME Activity Time Periods ATP Other Information Quick Links . Presentations . Welcome to the 2m CW EME ATP homepage. Here you will find all information about the monthly 2m EME activity events. Next Activity ! Frequency 144.040-144.060 CW . ATP 2015. 144 MHz . 28 Feb 1330-1630 GMT. 28 Feb 2200-0100 GMT (Mar 1) 28 Mar 1230-1530 GMT. 28 Mar 2030-2330 GMT . 25 Apr 1030-1330 GMT. 25 Apr. The 2-meter amateur radio band is a portion of the VHF radio spectrum, comprising frequencies stretching from 144 MHz to 148 MHz in International Telecommunication Union region (ITU) Regions 2 (North and South America plus Hawaii) and 3 (Asia and Oceania) and from 144 MHz to 146 MHz in ITU Region 1 (Europe, Africa, and Russia). The license privileges of amateur radio operators include the use. The second amplifier on the right uses two 1kw RF decks with a combiner, a larger heat sink and a more ruggedized LPF. This one is capable of 1500w in all modes, including the more demanding digital modes (JT65 and others) used for EME. Absolute maximum output on this one, measured at 51v and max drive was 2.5KW. Of course, this was into a. Rotary frequency converters from EME are a high-quality and reliable solution in technical applications which require a higher operating frequency. The rotary frequency converters do not produce any distortions as a result of power semiconductor switching operations. The quality of the output voltage is therefore far beyond that of static converters and is usually even better than the public.

I worked 57 folks on 2 meter EME and 17 folks on 70cm EME. Now that is a lot of bang for the buck! Fortunately a portable EME station doesn't have to be neat. A look at my KH6/KB7Q 70cm lash-up using a borrowed FT-897D. 6M EME from Alaska 2010, that salt water moonset horizon produced 33 contacts and quite the view.. 13wl 70cm Yagi on the Beartooth Plateau, Wyoming. I worked 18 stations. The same may not (and almost certainly does not) hold true for the higher frequency EME bands which have larger values of libration spreading and different overall echo shapes. What do you need to work FT8 on 1296. For reasonable decode probability you probably want a signal level of -18dB or higher. That means something like a two 2.4m (8ft) dishes running around 150W should be able to work. GTV 70-2m Yagi with bent Driven Element EME + SSB band, usable up to 440 MHz, relatively clean rear pattern version This little Yagi has a high F/B for a 2 ele., which makes it quite useful for lower noise or weaker signal operations. The bent DE (K6STI style) transforms from approx. 40 ohms to 50 ohms at feed point. The GTV 70-2m is the worlds tiniest Yagi that did EME QSOs GTV 70-2m built by. Object: Two-way communications via the earth-moon-earth path on any authorized amateur frequency above 50 MHz. 2. Date and Contest Period: Three full weekend 48-hour periods (0000 UTC on Saturday through 2359 UTC Sunday). 2020 dates and designated bands: September 12-13, 2020: 2.3+ GHz; October 10-11, 2020: 50-1296 MHz; November 28-29, 2020: 50-1296 MHz; 3. Entry Categories: 3.1. Single. Please consult your local ARCA Frequency Coordinator for help finding suitable repeater frequencies. For example, a 2-meter repeater on 145.50MHz would be out-of-band because the deviation will put the signal outside of the authorized band segment. Packet radio operations under automatic control should be guided by Section 97.109(d) of the FCC rules. Prior to regular packet radio use of any.

W7GJ 2m EME Tips - bigskyspaces

The DL0SHF 10GHz EME Beacon The DL0SHF beacon is a tremendous resource for anyone interested in 10GHz EME. It not only gives you something to listen when activity is low (which is much of the time!), but provides a frequency reference (10368.025 MHz)and a constant strength signal which can be used for testing system performance Because almost all 6m EME activity uses the weak signal JT65A mode, which does not tolerate QRM, most frequencies are agreed to well in advance, and frequencies with known or expected activity are avoided. In addition, there are other local band use plans and government regulations that further restrict the use of digital modes and/or EME weak signal operation, so a suitable frequency often. The frequency range between 1GHz and 10GHz is commonly known as the microwave low noise window due to the prevalent low sky noise temperature. There are five amateur radio bands between these frequency limits and all of them are exploited by EME enthusiasts in order to make DX EME contacts. 432MHz also exhibits low sky noise, but it is still higher than the five 'microwave bands'. It is this. Considerations When Selecting a Frequency for HotSpots Things to Consider when selecting a Hotspot Frequency • First and very important make sure and select different frequencies if you are using multiple hotspots in the same location. • Using the same frequency on multiple hotspots will cause a looping condition which will interfere with a Talkgroup and will get you ID banned temporarily EME presents significant challenges to amateur operators interested in weak signal communication. EME provides the longest communications path any two stations on Earth can use. Amateur frequency bands from 50 MHz to 47 GHz have been used successfully, but most EME communications are on the 2 meter, 70-centimeter, or 23-centimeter bands

ARRL EMEコンペ 1st leg 結果 - Konyのお部屋

VCO frequency divider (multiple of 1/2/4/8/16) allows to synthesize frequencies from 137.5 MHz to 4400 MHz. A good phase noise (approximately -100 dBc/Hz, 10 kHz at a frequency of 1152 MHz). This development designed to be used as SHF LO (beacon, transverter) at a fixed frequency. LO PLL ADF4350 Read More » PA 23cm 1296 MHz MRFE6S9160 150 Watt. Power Amplifiers / By US4ICI. Developers. The quality of the output voltage is therefore far beyond that of static converters and is usually even better than the public power grid. As a result, rotary frequency converters are also used for grid stabilisation and for improvement of the grid quality. Here, the grid and consumer sides are always electrically isolated from each other If you have 1 or 2 modest-size antennas and <500w: EME Using PTT 144 & 432 MHz Amp PTT M2 2M9SSB (144) Innov 18LFA (432) 60' EcoFlex 10+, -0.9 dB ** SSPA/LNA 100w/1.1 dB on 432 MHz (OPT.) Use PTT to To drive a sequencer! PTT Method Advantage • Immune from noise tripping VOX • PTT uses JT65 delay (~0.5 sec) to switch SSPA before modulation • Expandable using a sequencer.

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