EA6VQ's 144 MHz EME calendar 2022

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 - 2021  

Weekend
2021

CONDITIONS on 144 MHz

Dec   04-05

Poor -> Very poor and New Moon on 4th

11-12

Moderate

18-19

Poor / Very poor

25-26

Good
        

 

 EA6VQ's EME WEEKEND CALENDAR - 2022    EA6VQ's EME BEST DAYS - 2022 (DGRD < 2.5 dB)

Weekend
2022

CONDITIONS on 144 MHz

Jan    01-02

Very poor and New Moon on 2nd

08-09

Moderate

15-16

Very poor -> Poor

22-23

Good -> Moderate
29-30 Very poor

Feb     05-06

Moderate

12-13

Very poor -> Moderate

19-20

Moderate

26-27

Very poor -> Moderate

Mar    05-06

Moderate

12-13

Poor -> Moderate

19-20

Moderate

26-27

Poor -> Moderate

Apr     02-03

Moderate -> Poor

09-10

Moderate -> Good

16-17

Moderate

23-24

Moderate

30-01

Moderate -> Poor and New Moon
May    07-08 Moderate -> Good

14-15

Moderate

21-22

Moderate

28-29

Poor

Jun    04-05

Good

11-12

Moderate

18-19

Moderate -> Good

25-26

Poor
Jul    02-03 Good
09-10 Moderate -> Poor
16-17 Good
23-24 Poor
30-31 Good

Aug    06-07

Poor -> Very poor

13-14

Good

20-21

Poor -> Very poor

27-28

Good but New Moon on 27th
Sep    03-04 Very poor
10-11 Good
17-18 Poor
24-25 Good -> Moderate but New Moon on 25th

Oct    01-02

Very poor

08-09

Good -> Moderate

15-16

Very poor -> Poor

22-23

Good -> Moderate

29-30

Very poor
Nov    05-06 Moderate
12-13 Poor
19-20 Moderate
26-27 Very poor -> Moderate

Dec   03-04

Moderate

10-11

Poor -> Moderate

17-18

Moderate

24-25

Poor -> Good
        

Days

CONDITIONS on 144 MHz
Jan 6-7 Best DGRD = 2.0 dB on 6th
Jan 18-22 Best DGRD = 1.9 dB on 19th
Feb 2-4 Best DGRD = 1.8 dB on 2nd
Feb 14-18 Best DGRD = 1.9 dB on 15th-16th
Mar 2-4 Best DGRD = 1.9 dB on 2nd BUT New Moon on 2nd
Mar 14-18 Best DGRD = 1.8 dB on 14th
Mar 29-31 Best DGRD = 2.1 dB on 29th
Apr 10-14 Best DGRD = 1.9 dB on 11th-12th
Apr 26-27 Best DGRD = 2.3 dB on 26th
May 8-11 Best DGRD = 2.0 dB on 8th-10th
May 23-24 Best DGRD = 2.1 dB on 23th
Jun 4-7 Best DGRD = 2.1 dB on 4th
Jun 17-21 Best DGRD = 1.9 dB on 19th
Jul 1-4 Best DGRD = 2.2 dB on 1st-2nd
Jul 14-18 Best DGRD = 1.7 dB on 16th-17th
Jul 29-31 Best DGRD = 2.2 dB on 29th BUT New Moon on 29th
Aug 11-15 Best DGRD = 1.6 dB on 12th-13th
Aug 25-28 Best DGRD = 2.1 dB on 25th BUT New Moon on 26th-27th
Sep 8-12 Best DGRD = 1.6 dB on 9th
Sep 21-24 Best DGRD = 2.1 dB on 22nd
Oct 6-9 Best DGRD = 1.8 dB on 6th-7th
Oct 19-22 Best DGRD = 2.1 dB on 19th
Nov 2-5 Best DGRD = 2.0 dB on 3rd
Nov 15-18 Best DGRD = 2.2 dB on 15th
Nov 29-Dec 1 Best DGRD = 1.9 dB on 30th
Dec 12-14 Best DGRD = 2.3 dB on 12th-13th
Dec 25-29 Best DGRD = 1.6 dB on 27th

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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