Single Yagi WSJT EME

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Who Will Be On The Moon Today?
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Caveat --- Not all EME is equal!!
The operations described in this presentation
should not be compared to CW/SSB EME. My and
Garys operations illustrate what can be done
with current software and hardware for a EME
experience with minimum ERP at 2 meters. The
satisfaction of EME using the digital modes
vary with the operator. Warning --- EME has
been shown to be addictive!!
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EME?
Could You Work 2 Meter EME?
4
You CAN work EME without a MBA!
W5UN 32x17M2
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How to begin? Make station improvements
K1JT 2004
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Signals arent always stable and the same.

• Faraday Rotation (One of many variations)
• The rotation of the polarization of the
  signal path caused by the earths magnetic field.
  This normally is a great contributor to signal
  QSB on EME signals. It is more pronounced on the
  lower EME bands.

(OK1TEH) OK1TEH
7


More EME Variables
Spatial Polarization Rotation due to relative
longitudes of the two stations and the relative
position of the moon. Libration Fading Signal
variation caused by the moons rocking on its
axis. Brief fade and enhancements lasting a
couple seconds on 2 meters. Sky Noise Noise
from celestial background objects. (Single yagi
sees 30 degrees and the moon only subtends ½
degree of that.) Range of 175o K (rare) to over
3000o K. Path Loss Elliptical orbit of the moon
- 221,500 to 252,700 miles. (About 2 db
variation) Total monthly
variation gt13db on 2 meters Ground Gain Gain
obtained on the horizon, up to 6 db minus
terrestrial noise and reflections. Potentially
useful up to 10 to 12 degrees of elevation.
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Local Variation Example
174100 6 -17 2.4 307 3 CQ KB8RQ EM79
1 10 174100 0 -28 2.6 334 4
CQ KB8RQ EM79   174300 8 -15 2.4 312 3
CQ KB8RQ EM79 1 10 174300 2
-25 2.7 336 3 CQ KB8RQ EM79   174500 4
-16 2.4 315 3 CQ KB8RQ EM79
1 10 174500 1 -24 2.5 342 3 CQ
KB8RQ EM79   174700 2 -14 2.4 318 3
CQ KB8RQ EM79 1 10 174700 2 -21
2.6 345 3 CQ KB8RQ EM79   174900 7 -18
2.4 318 3 CQ KB8RQ EM79 1
10 174900 3 -22 2.5 345 3 CQ KB8RQ
EM79   April 5th 2006 OneWay Bad prop to
Europe due to Faraday and Spatial . Black KØAWU,
Red WØGHZ
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KØAWU - WSJT

• Since November 2001 Surgery recovery
• 974 QSOs via Meteor scatter on 6, 2 and 222
• using WSJT mode 441.
• March 2002
• 1 - 2m EME - JT44 - K9KNW
• Using 13B2 antenna and 400 watts.

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Several addition EME contacts over the next 3
years
Then Local power failure after working several
guys on moon rise with the 13B2 tropo antenna and
600watts.
February 12, 2005
Time to try a better way!
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Feb 2005
2SA13 Yagi Preamp in the shack 600-800 Watts 45ft
of 9913/RG8 12 ft mast Nylon guys Line off rear
for AZ/El control Compass -
Inclinometer
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Winter 05-06

• Improvements
• AZ Rotator
• Rigid guys
• Better elevation control
• and measurement.
• No longer IN the driveway
• LMR 400 feedline
• Spectran on main computer
• Up for the winter season

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Feb 12 March 15, 2005

• 57 additional initials.
• 5 Continents
• DXCC - 26

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AZ Rotator Manual EL
Sloppy, but good enough for 2 meters and a single
yagi. (Unlike 10Ghz with a 40ft dish which
illuminates an area 200miles wide on the moon)
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Antenna sizes being worked.
24 Yagis 5 16 Yagis 6 8 Yagis
11 6 Yagis 4 4 Yagis
100 2 Yagis 22 Single Yagis 7
(Data from first 154 initials)
My smallest station worked GM4VVX - 10elem yagi
400watts at his moon set .
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Current WSJT 2m EME Initials 159 DXCC 37
Continents 6 Grids 133
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2m EME operations using WSJT
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EME -- 2006 WSJT
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WØGHZ_EME_MS_TROPO
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Observations

• You may have all you need now.
• The antenna system can be simple.
• An antenna that does not have to be high.
• Reflector can be on the ground!
• Less RFI TVI problems for me.
• Single yagi, pointing non-critical, repoint
  every 20 min is ok.
• Great community. New stations are in DEMAND!
• Lots of birdies and miscellaneous electronic
  noises

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Decode Caution

• Question marks indicate "OOO" and shorthand
  messages about which there may be some doubt.
  These occur when the "OOO" sync is found but the
  message text is not successfully decoded, or when
  a probable shorthand message is detected.
• Avoid using ANY decode that ends with a question
  mark! Not very often I have ever seen one that is
  valid! This is a real concern on tropo
  operations. The presence of birdies make it
  even worse.

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Birdie Example -Bad decodes-

• NOTE
• ? flag
• DT
• Trace period
• Strong/but no sync
• Probability flag

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Bill here only 200w/17elem in JT65 without
elevation (F6APE Jean)
144200 0 -29 1.4 -159 3 K0AWU F6APE
IN97 0 6 144600 0 -27 1.5 -164 1
K0AWU F6APE IN97 ? 0 1 145000 2
-26 1.5 -170 3 K0AWU F6APE IN97
0 10 145200 3 -25 1.4 -172 3 K0AWU
F6APE IN97 ? 0 4 (April 24, 2006 Moon
set in IN97 145300)
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WØGHZ - WSJT 2m EME (Jan 4 April 28,
2006)
Initials 81 DXCC 23 Continents 4
States 11 Grids 66
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WØGHZ 2m EME Countries
Asiatic Russia Australia Balearic
Is Denmark   Estonia France European
Russia Finland Germany Greece Ireland It
aly Japan Poland Malta Netherlands
  Serbia Montenegro Slovenia Spain Sweden
Switzerland USA Wales
WØGHZ -1
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WØGHZ 2m EME Initials
JAN FEB MAR
APR   KB8RQ DF2ZC PA1GYS GW3XYW
RA0FU W5UN IK1UWL DL9MS SM5CUI
DK3EE K7MAC S52LM OZ1LPR W0PT
9H1TX RA3AQ YU1CF W7IUV F1FLA
IK3MAC RU1AA RA6DA DL7FF YU150CF
EB5EEO S52LM PA2CHR I2RV E14DQ
JH2COZ UA4AQL DL8GP F1DUZ VK2KU
JM1GSH I6BQI DK5EW F8DO F9HS
SP6GWB F6HVK PA3FPQ RN6BN KD3UY
SV8CS EA6VQ K2TXB SM2ILF PA3DZL
K7MAC EA3DXU S52ZO DF7KF RN6MT HB9Q
DJ9CZ PE1BTX RD3BD EA5SE PA3CMC
UA9FAD PA3FSA K2BLA DH3YAK AA7A
RA0FCA ES6RQ OH6ZZ PE1L K6MYC PA0JMV
DJ7OF F6FHP W7MEM RK3FG PA3FPQ
DK1CO UA9SL DK8ZJ OH7PI K9MRI  
21 10 34 16   TOTAL 81
WØGHZ -2
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Logger Cut Paste

• K0AWU Bill -23 max , TNX , 73 !! (UA9SL/4X17/800
  Vlad xx lo71ns)
• Bill , tnx QSO agn , u my smallest Stn ! 73
  (DL6BF Heinz xx JO32qi )
• Bill, -23, calling you next period
  (S52LM/4X17/1500 Milos )
• Bill K0AWU TNX surprising qso via sunbounce !!!
  -)
• 
  (PA0JMV Joop xx JO21pm)

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What does it take?

• W5UN, KB8RQ, IK3MAC etc on moon rise/set using
  WSJT JT65B -- 10 elem yagi 70watts
• (You will have about 90min moon rise and moon
  set time with tropo antenna.)
• HB9Q 432Mhz is working single yagis and
  50watts.
• (15 meter dish and QRO)
• KØAWU Ground gain 10elem yagi 400watts gt)

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Consider a NEW 2 meter
Activity! Consider WSJT 2m EME! CU off the
MOON!
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Additional KØAWU 05-06 operational projects

• BlackDecker cordless screwdriver 10 Ghz dish
  elevation system.
• N1JEZ / Low cost GPS locked 10 Mhz reference.
• DDS-60 software controlled signal source (1- 60
  Mhz)
• 20 Software Defined Receiver for spectrum
  display on 2 meters and 10 Ghz. (96kc wide
  spectrum)

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One poor Mans 10Ghz DDS Elevation
Control(KØAWUs elevating experience )
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30 SDR display of WØGHZS-2 CW 10 Ghz
rainscatter signal.
Softrock Ver5 at 28Mhz HB IC 28mhz 13db
preamp 1975 HB 2m Rec converter Dell 2.8Ghz
P4 Delta 44 sound card VE3NEA Rocky software
Cursor position not IF frequency.
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QUESTIONS??
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JT65B - Spectran

• For those who like to decode by ear (or by eye
  using Spectran or an equivalent program), it may
  help to know that the tone spacings for shorthand
  messages are shown with the red ticks.
• RO
• RRR
• 73

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WSJT JT65B
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2SA13 Yagi
2SA13 This design with 13 elements on a 4.04 wl
boom is more than just another antenna for
144MHz. It is designed for best possible
performance in dry and wet weather when used in a
configuration of 4 antennas stacked at a distance
of 4.2 meters. The true G/T obtained from four of
these antennas is extremely good for a 4-yagi
configuration of modest size. Designed by SM5BSZ
Leif. Frequency band 144.0 - 144.4 MHz VSWR lt
1.31   Boom length 8.5 m (4.04 wl)    Single
antenna Gain 14.47 dBd _at_ 144.1 MHz (
US material conversion by VE7BQH and K5GW for
Gary KB8RQ)