EA6VQ's 144 MHz EME calendar 2024

You could also be interested in the on-line EME calculator, the DX news and the 50 MHz EME calendar

 EA6VQ's EME WEEKEND CALENDAR - 2023    EA6VQ's EME BEST DAYS - 2023 (DGRD < 2.5 dB)

Weekend
 2023

 CONDITIONS on 144 MHz

Dec   02-03

 Good

09-10

 Moderate -> Poor

16-17

 Moderate -> Good

23-24

 Moderate -> Poor

30-31

 Good
        

Days

 CONDITIONS on 144 MHz
Dec 2-3 Best DGRD = 2.1 dB on 2nd
Dec 17-21 Best DGRD = 1.7dB on 18th
Dec 29-31 Best DGRD = 2.0 dB on 29th

 

 EA6VQ's EME WEEKEND CALENDAR - 2024    EA6VQ's EME BEST DAYS - 2024 (DGRD < 2.5 dB)

Weekend
 2024

 CONDITIONS on 144 MHz

Jan    06-07

 Poor

13-14

 Good

20-21

 Moderate -> Poor
27-28 Good -> Moderate

Feb     03-04

 Poor

10-11

 Good -> Very good

17-18

 Poor

24-25

 Moderate

Mar    02-03

 Poor -> Very poor

09-10

 Very good but New Moon on the 10th

16-17

 Poor

23-24

 Moderate

30-31

 Poor -> Very poor

Apr     06-07

 Very good

13-14

 Poor

20-21

 Moderate -> Poor

27-28

 Very poor
May    04-05 Good

11-12

 Poor -> Moderate

19-19

 Moderate -> Poor

25-26

 Very poor

Jun    01-02

 Good

08-09

 Poor -> Moderate

15-16

 Moderate

22-23

 Very poor

29-30

 Good -> Moderate
Jul    06-07 Moderate -> Good but New Moon on the 6th
13-14 Poor
20-21 Poor -> Moderate
27-28 Good -> Moderate

Aug    03-04

 Moderate -> Good but New Moon on the 4th

10-11

 Poor

17-18

 Moderate

24-25

 Good -> Moderate

31-01

 Good
Sep    07-08 Poor
14-15 Moderate -> Good
21-22 Moderate
28-29 Good

Oct    05-06

 Poor

12-13

 Moderate -> Good

19-20

 Moderate

26-27

 Good -> Moderate
Nov    02-03 Poor -> Very poor
09-10 Moderate -> Good
16-17 Moderate -> Poor
23-24 Good -> Moderate
30-01 Poor -> Very poor and New Moon on the 1st

Dec   07-08

 Good

14-15

 Moderate

21-22

 Good -> Moderate

28-29

 Very poor
        

Days

 CONDITIONS on 144 MHz
Jan 13-17 Best DGRD = 1.4 dB on 14th
Jan 25-27 Best DGRD = 2.1 dB on 26th
Feb 9-14 Best DGRD = 1.2 dB on 11th BUT New Moon on 9th-10th
Feb 22-23 Best DGRD = 2.2 dB on 22nd
Mar 8-12 Best DGRD = 1.1 dB on 10th BUT New Moon on 10th
Best conditions in 2024
Mar 20-21 Best DGRD = 2.1 dB on 20th
Apr 5-9 Best DGRD = 1.2 dB on 7th  BUT New Moon on 8th-9th
Apr 16-18 Best DGRD = 2.1 dB on 16th
May 3-6 Best DGRD = 1.4 dB on 4th
May 13-15 Best DGRD = 1.9 dB on 14th
May 30-Jun 2 Best DGRD = 1.7 dB on 31st
Jun 9-12 Best DGRD = 1.8 dB on 10th
Jun 26-29 Best DGRD = 1.7 dB on 27th-28th
Jul 7-9 Best DGRD = 1.9 dB on 7th-8th
Jul 23-27 Best DGRD = 1.5 dB on 23rd-25th
Aug 3-5 Best DGRD = 1.9 dB on 4th  BUT New Moon on 3rd-4th
Aug 19-24 Best DGRD = 1.3 dB on 20th-21st
Aug 31-Sep 1 Best DGRD = 1.9 dB on 31st
Sep 15-20 Best DGRD = 1.1 dB on 17th-18th Best conditions in 2024
Sep 27-29 Best DGRD = 2.0 dB on 28th
Oct 13-18 Best DGRD = 1.2 dB on 15th
Oct 24-26 Best DGRD = 1.8 dB on 25th
Nov 10-14 Best DGRD = 1.5 dB on 11th
Nov 20-23 Best DGRD = 1.6 dB on 21st
Dec 7-11 Best DGRD = 1.7 on 9th
Dec 17-21 Best DGRD = 1.4dB on 18th

The best EME conditions occur when:

  1. The Earth-Moon distance is at the absolute minimum and
  2. The Moon is in the coldest sky region (less background noise) along the moon path.

The effect of distance is independent of frequency, but sky temperature decreases with frequency, up to ~1 GHz and then levels out. The EME signal-to-noise ratio, in dB, is DGRDaded, from the minimum, by a factor (DGRD, see below), which varies over hourly, daily, weekly, monthly and yearly time periods. As a guide for the basic weekend EME conditions the present calendar lists the expected conditions based on the DGRDadation (DGRD) value. Factors such as local noise, antenna beam width, side lobes, polarization, etc. can also affect the s/n ratio of moon bounce signals.

Conditions:

Summary of EME conditions as controlled by DGRD at 144 MHz and New Moon. Conditions may be worse, due to ionospheric disturbance, local noise and polarity, but not better than indicated.

In general, 144 MHz DGRD:

Within a day of New Moon (NM), high sun noise can make conditions very bad regardless of the DGRD.

When two different conditions are indicated for the same weekend, it means that they change from the value indicated on the left at Saturday's moonrise to the value indicated on the right at Sunday's moonset.  For instance:

Dec   07-08

 Moderate -> Poor

means that on Dec, 7th Moonrise conditions are Moderate and get worse until Dec, 8th Moonset when they are Poor.
 
 
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