Earth Moon Earth (EME)
Moon Data - May 2013
Background information:
Moon distance [km]: Earth-Moon distance. Mean distance is 384400 km. Minimim during perigee 356400 km. Maximum during apogee 406700 km. This translates to as much as 2.25dB difference in pathloss from apogee to perigee.
Moon declination [deg]: Moon declination in degrees north (+) and south (-) of the equator. Max declination up to 28.7 degrees.
Degradation [dB]: Degradation in EME signal-to-noise, calculated as: Tsky [K] / (TskyMin [K] + Tsys [K] ) + RangeFactor [dB]
Calculation assumptions for 144MHz: TskyMin = 200 K, Tsys = 80 K, Observer Position = Central Europe, Time = 12:00 UTC, Tsky data interpolated from EME Handbook 2010 / WSJT 7.03 source data by K1JT.
Conditions summary: Conditions are summarized on basis of the degradation. Be aware that this is only a theoretical approach and the real conditions may vary due to local or ionospheric changes. In general this info is only meant to show the current astronomical situation and to indicate a global trend. Within a day of New Moon (NM), high sun noise can make conditions 'Very Poor' regardless of the DEG. The conditions are classified i.a.w. following DEG [dB]:
< 1.5 => Excellent
> 1.5 and <= 2.5 => Good
> 2.5 and <= 4.0 => Fair
> 4.0 and <= 5.5 => Poor
> 5.5 => Very Poor
Moon distance [km]: Earth-Moon distance. Mean distance is 384400 km. Minimim during perigee 356400 km. Maximum during apogee 406700 km. This translates to as much as 2.25dB difference in pathloss from apogee to perigee.
Moon declination [deg]: Moon declination in degrees north (+) and south (-) of the equator. Max declination up to 28.7 degrees.
Degradation [dB]: Degradation in EME signal-to-noise, calculated as: Tsky [K] / (TskyMin [K] + Tsys [K] ) + RangeFactor [dB]
Calculation assumptions for 144MHz: TskyMin = 200 K, Tsys = 80 K, Observer Position = Central Europe, Time = 12:00 UTC, Tsky data interpolated from EME Handbook 2010 / WSJT 7.03 source data by K1JT.
Conditions summary: Conditions are summarized on basis of the degradation. Be aware that this is only a theoretical approach and the real conditions may vary due to local or ionospheric changes. In general this info is only meant to show the current astronomical situation and to indicate a global trend. Within a day of New Moon (NM), high sun noise can make conditions 'Very Poor' regardless of the DEG. The conditions are classified i.a.w. following DEG [dB]:
< 1.5 => Excellent
> 1.5 and <= 2.5 => Good
> 2.5 and <= 4.0 => Fair
> 4.0 and <= 5.5 => Poor
> 5.5 => Very Poor
Latest CQ announcements from JT65 EME Chat
TIME [UTC] |
CALLSIGN |
INFO |
LOCATOR |
05/18 23:32 |
K9MRI Joe> |
CQ 2nd 144.149 |
EN70iu |
05/18 23:29 |
DK9ZY 4X10/2K Wolf> |
*** CQ CQ DK9ZY 144.116 1st *** |
JO40be |
05/18 23:16 |
W8PAT 6X12V John> |
231400 2 -25 1.5 164 3 * CQ N1DNN FN34 |
EN81vg |
05/18 23:17 |
K5DOG 2/432 Stevedog> |
231459 3 -20 2.4 -194 3 * CQ DK9ZY JO40 |
EM00wh |
05/18 23:15 |
DG0FE Lothar> |
CQ 144.125 2nd test |
JO62un |
05/18 23:15 |
DK9ZY 4X10/2K Wolf> |
*** CQ CQ DK9ZY 144.116 1st *** |
JO40be |
05/18 23:09 |
IZ1GZA 2X32HV1K Marco> |
======= STOP CQ .125 1= QRT = 73 All, Ciao = |
JN34vi |
05/18 23:02 |
N1DNN 2X9H/350 Bill> |
CQ CQ CQ .122 1st |
FN34rf |
05/18 22:58 |
IZ1GZA 2X32HV1K Marco> |
======= CQ .125 1st few periods - change pol ====== |
JN34vi |
05/18 22:53 |
DK9ZY 4X10/2K Wolf> |
*** CQ CQ DK9ZY 144.116 1st *** |
JO40be |
05/18 22:51 |
IZ1GZA 2X32HV1K Marco> |
======= CQ .125 1st few periods ====== |
JN34vi |
05/18 22:42 |
DK9ZY 4X10/2K Wolf> |
*** CQ CQ DK9ZY 144.116 1st *** |
JO40be |
05/18 22:31 |
ON4KHG Gaetan> |
########### CQ 144.138 2nd ON4KHG for 10 min then QRT ############# |
JO10xo |
05/18 22:30 |
S51ZO 4X14/KW Joze> |
CQ 144.120 FIRST |
JN86dr |
05/18 22:26 |
KC6ZWT 17EL/350 Norm> |
DK9XY BIG signal here: 222300 0 -19 1.9 -105 2 * CQ DK9ZY JO40 1 10 |
CM98no |
05/18 22:25 |
K2TXB 2X16/K/HV Russ> |
222000 0 -22 2.6 -135 3 * CQ ZS6BUN KG43 0 10 |
FN20mb |
05/18 22:25 |
RK3FG 4X15/HV/K Anatoly> |
STOP CQ 73 to all. OFF Link, ZZZZZ |
KO86hp |
05/18 22:22 |
IW4ARD 4XP22/KW Gianni> |
146 -195 178 222000 2.5 -18 CQ ZS6BUN KG43 1 68 142 H |
JN64fd |
05/18 22:21 |
SP4K 4X14XP Chris> |
146 -216 2 222000 3.9 -14 CQ ZS6BUN KG43 1 397 164 H |
KO03hs |
05/18 22:21 |
PA1GYS 4X2M20XP Gys> |
V-pole 222000 3 -20 2.7 -283 3 * CQ ZS6BUN KG43 0 10 |
JO22xw |
05/18 22:20 |
KC6ZWT 17EL/350 Norm> |
DK9ZY calling you: 221500 2 -20 1.1 -3 3 * CQ DK9ZY JO40 1 10 |
CM98no |
05/18 22:19 |
ON4KHG Gaetan> |
########### CQ 144.138 2nd ON4KHG ############# |
JO10xo |
05/18 22:18 |
NC2V 4X12H/1K2 Barry> |
221600 0 -29 2.0 -92 24 * CQ YL2GC KO26 |
EL98nq |
05/18 22:16 |
DK9ZY 4X10/2K Wolf> |
*** CQ CQ DK9ZY 144.116 1st *** |
JO40be |
05/18 22:16 |
UA1CCU Kosta> |
221500 1 -28 2.0 -237 2 * CQ DK9ZY JO40 |
KP60sr |
Updated: 18. May 2013 at 23:38 UTC
Best tools for EME activities online
Please have a look at N0UK's JT65 Logger page:
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Please have a look at ON4KST's famous Chat page:
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Or combine the N0UK and ON4KST chats into the MMMonvhf DX Client (MDC):
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LiveCQ - Made by PE1L It can be used for WSJT, CW or whatever you want:  |
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Miscellaneous, rumors, interesting statements, links and all around 144 MHz EME I did found past days
Date |
Info |
2012-05-24 |
Fred, KH7Y is active on the moon from BK29cb. He showed up today May 24. with his 5 lambda yagi and 8877 with strong signals when ground gain was helping a lot. Soon he will have elevation and be on more frequently. (Source N0UK logger de Udo, DK5YA). |
2011-04-13 |
As well as Frank, DL8YHR, there are some EME plans at Joachim, DL9MS, again to be active during a trip in summer - soon more details at the LATEST NEWS page SOURCE: DL9MS at N0UK-Logger de Guy, DL8EBW, Team of MMMonVHF |
2011-04-13 |
Frank, DL8YHR, planing a EME trip in may to an country which have been not active on 2m EME until now... Asap and licenz will be there, Frank will post it on the LATEST NEWS page of MMMonVHF SOURCE: DL8YHR at N0UK-Logger, de Guy, DL8EBW, Team of MMMonVHF |
2011-03-21 |
A new station from India (VU2) showed up on the Scene. VU2BGS, Kumar will be in MK82 and was worked from some big guns on 144 MHz. He will have 1x 10el Yagi and 100W. Mailcontact: bsgkumar"at"gmail.com SOURCE: tnx to Dan, HB9Q to MMMonVHF |
2011-03-18 |
WA3TLT, Larry, PA, showed up on N0UK-Logger from FN00eg. He is qrv with 12ele and 100w SOURCE: from N0UK-Logger de Guy, DL8EBW, Team of MMMonVHF |
2011-03-17 |
We would like to inform you that we have a slight change of the editors of the EME sections at MMMonVHF: Responcable in future for the section "EME" is Guido, DL8EBW accompanied by Lins, PA3CMC to get up the EME page more up to date... So please do welcome the change in aim of more activity and attractiveness... In future you will find here more RUMORS and INFOS taken by CHATS and direct from USER announces - you are welcome to send your input! Please do use our Contact Form to reach the editor! - SOURCE: The MMMonVHF Team |
2011-03-17 |
A new station from Saudi Arabia showed up on the Scene. Tom, HZ1FS, is qrv with 9el HV and 100W from LL34jr - Soon he will be qrv with 2x10ele as 7z1hb - SOURCE: tnx to Reinhard, DK5LA |
2011-02-22 |
KE6ILX, Jeff got up on N0UK with his new Rig (4x 10el/400W) from CM99ke and made lot QSOs on 144 MHz EME past days - SOURCE: from N0UK-Logger de Guy, DL8EBW, Team of MMMonVHF |
2011-02-17 |
Dani, YO5PLD did change his call to YO5LD and be qrv now on 2m EME from /p (or better remote) with 4x 6wl antennas and EME Pwr. Look for him on N0UK logger... SOURCE: Dani, YO5LD to MMMMonVHF |
2011-01-01 |
2011 EME Calendar for ARI official Contest You will find the EME Calendar for ARI official Contest as a PDF-File here SOURCE: Alex, IV3KKW direct MMMonVHF |
Earth Moon Earth (EME)
If you want to read more about the theory, practice, tools and so on please feel free to take a look at some articles in our FORUM.
Today's EME Propagation
Next 30 days lowest degradation:
2013-05-29: (2.2) => Good
2013-05-30: (2.3) => Good
2013-05-31: (2.3) => Good
2013-06-01: (2.4) => Good
2013-06-02: (2.4) => Good