PROGRAM

EME2018 Conference

Wednesday August 15th 2018

Arrival Hotel Zuiderduin

Thursday August 16th 2018 – Waterday

9:00 hrs Bustransfer from Hotel Zuiderduin to Reeuwijkse Plassen
– Short coffee break “Reeuwijkse Plassen”
– Ferry Bergambacht
– Harbour tour Rotterdam and “Maasvlakte 2” with Lunch at SPIDO
18:30 hrs Back at Hotel Zuiderduin
19:00 hrs Possibility to have dinner at Hotel Zuiderduin (you can book this separately at the hotel)

Friday August 17th 2018 – ASTRON day

9:30 hrs Bustransfer from Hotel Zuiderduin to Heerenveen
– Short coffee break at Heerenveen
– Visit Westerbork

“Ham Radio Operators”:
Visit ASTRON Dwingeloo  http://www.camras.nl/

Partners:
Visit Memorial Centre Westerbork

– 17:00 hrs Bustransfer from Dwingeloo to Heerhugowaard
– 19:30 hrs Pancake dinner at “De Bolle Buik” Heerhugowaard
After dinner back to Hotel Zuiderduin

Saturday August 18th 2018

“Ham Radio Operators”:
Program EME conference meeting:

8:45 – 9:00 hrs Opening
9:00 - 9:45 hrs PA0SSB: History of EME

In 1972 Jan PA0SSB made his own big dish and started doing EME.
Jan will tell about these early days of EME and the way moonbounce was done back then.

9:45 - 10:15 hrs G3LTF: A survey of 6cm activity in 2018

Interest in 6cm EME has been growing steadily in the last decade. The paper will describe the characteristics of 6cm EME and the equipment used by stations both large and small with details of antennas, feeds, transmitters and receivers. Where possible the paper will reference sites with constructional details.

Previous presentations on this topic can be found at http://moonbouncers.org/Orebro2017/G3LTF%206cm%20EME%20for%20SM%20Meeting%20.pptx
http://moonbouncers.org/onewebmedia/The%20Rise%20and%20Rise%20of%206cm%20EME_2.pdf

10:15 - 10:45 hrs Coffee break
10:45 - 11:15 hrs DL7APV: Building a 128 yagi array for 70 cm moonbounce

We all know in moonbounce bigger is better…
So Bernd DL7APV decided to build a huge yagi arry for 70 cm. Only a few months ago it was completed. It works as predicted but building it was hard work. In this presentation Bernd will tell you all about it.

11:15 - 11:45 hrs OK1DFC: First ever 3 cm EME from Africa

In October 2017 Zdenek OK1DFC activated Ceuta (EA9LZ) via the moon on 5 bands. Things did not work out totally as planned as the plan was to activate Morocco, but it turned out to be a very succesful expedition after all! Improvising and making the best of it were the keywords. Zdenek will show several pictures and movies of the expedition.

11:45 - 12:15 hrs ZS6EME: "UADC4, a dedicate ADC for SDR applications" the revival of ZERO IF receivers

The UADC4 is an ADC specially designed to work with SDR radios, specially with ZERO IF receivers, for many years we just use PC audio cards and this create a big obstacle because “Sound cards are for music” and not really specially designed for SDR applications, the performance of the UADC4 surpass the most expensive audio cards on the market for more than 10 dB’s and open a new window of experimentation for SDR radios based in IQ mixers were always was the sound card the limiting factor.

12:15 - 13:45 hrs Lunch break
13:45 - 14:15 hrs PA2CHR/PA3CMC/ZS6JON: The Swaziland moonbounce expedition
14:15 - 14:45 hrs G4DDK: The Iceni 70cm transverter

Iceni is the latest in a long line of G4DDK transverter designs going back to 1984 with the 4 and 6m Meons, through the 2m Suffolk, 23cm Kirton, 4m Nacton, and 2m Anglian 3. What was conspicuous by its absence was a 70cm transverter.

Having been asked if I would produce a design for 70cm, I began work in August 2017 on the design that would become the Iceni.

Although few could doubt that SDR transceiver architecture is the future, even for UHF through microwave, there is a still a steady interest in the superhet architecture transverter, for use with existing high performance HF rigs.

This paper describes the Iceni, the reasons for certain design decisions and the performance limitations that were felt acceptable.

As of spring 2018 more than 50 Iceni transverter kits have been produced and distributed.

14:45 - 15:15 hrs IK1UWL / IK3XTV: Chapter III – Limits of single polarity antennas in the V/UHF bands

This is the third chapter of our analyses of the effects on EME signals of ionosphere transit. We start with a short review on Moon reflection and depolarization. Then, using the excel sheet that we developed for modeling a full moon pass between two stations. we analyze 2 way polarization in VHF and UHF bands, and therefore qso probability for stations with linearly polarized antennas.

Moving from VHF to UHF, we show how the main factor in decode probability moves progressively from Faraday to Spatial Offset. We examine also the effect of axial rotation of the antenna.

15:15 - 15:45 hrs Tea (coffee) break
15:45 - 16:15 hrs G4BAO: 5-band GHz EME from a European suburban garden

Many people in general Amateur radio circles still think that EME requires huge dishes, QRO and a back garden the size of Switzerland.
This presentation follows the 10 – year journey taken by John, G4BAO from an interest in Microwave Terrestrial DX to completing EME QSOs from a suburban back garden on all five GHz bands up to and including 10GHz.

It covers the systems used and how they developed over the years, the limitations of such small systems and tips for optimising them to make QSOs “by any means.” It shows that with a “can do” attitude and a refusal to be told, “it’s not possible,” CW, JT mode and even SSB QSOs can be made from a small system by choosing the right bands, technologies, modes and QSO partners.

16:15 - 16:45 hrs G4LDR: Goonhilly- To the moon and back – GB6GHY

This is an account of EME operation from Goonhilly Earth Station in the UK during the summer of 2017. Initial, (unsuccessful), tests bouncing digital amateur television off the moon allowed access for ‘conventional EME’ operation. The 3.4 and 5.7GHz bands were used, where over 50 contacts were made. Measurements were also made to determine dish performance using the deep space radio source Taurus A.

16:45 - 17:15 hrs PA0PLY: 432MHz Polarisation Experiments

Going the path on 432Mhz EME at a certain moment one realises that it becomes difficult to be able to work some stations for one reason.
Little investigation shows actually, that there are much more than one reason involved in this phenomen.
With my presentation, I would like to share my experiments as well as the information found during my investigation and gathered in talks with yearlong experts on 432Mhz EME communication.

Table top presentations August 18/19

N2END: A Microprocessor-Controlled Antenna Polarization System
An amateur-built system to control the polarization of Yagi-Uda antennas is described. The system makes use of a stepping motor and reduction drive to mechanically rotate an antenna boom along its axis. A microprocessor combines operator input, antenna position data, and time from an onboard clock and controls the stepping motor appropriately. Interaction with the operator is carried out with a simple command line interface. It allows the operator to adjust the receive position for best signal, and when available, the spatial polarization offset may be entered, from which the optimum transmit position is calculated. The microprocessor will automatically move the antenna between receive and transmit positions at the correct time. The antenna can move through an angle of 90 degrees in less than two seconds, allowing optimized linear polarization on both transmit and receive for typical modes used in EME communication. Polarization control was implemented in a 432 MHz EME system using homebuilt 15LFA-JT antennas with rear-mounted booms, and results obtained with it are described. A working prototype will be demonstrated during a tabletop presentation.

EB3FRN: 10GHz low noise amplifier technique

DJ3FI: Cavity low noise amplifiers

For sale August 18/19

DK6JL
G3AAF
G4DDK

Noise figure measurements

PA7JB

Posters

UA3AVR / RW3BP
OK2AQ

Sectie

Saturday August 18th 2018

Partners:
9:30 hrs Bustransfer to Alkmaar
– Visit Alkmaar
– Visit Volendam incl. lunch
16:30 hrs Bustransfer from Volendam back to Hotel Zuiderduin
17:30 hrs Arrival Hotel Zuiderduin

Ham Radio Operators + partners:
17:30 hrs Group Photo
19:00 hrs Start BBQ/beachparty
22:00 hrs End of programm

Sunday August 19th 2018

“Ham Radio Operators”:
Program EME conference meeting:

9:00 - 9:30 hrs DJ5YL: First YL EME SSB QSO on 70 cm

On May 27, 2017 Joana DJ5YL visited the radio telescope in Dwingeloo. The main goal was to have the first ever EME SSB YL QSO on 70 cm. The event was a big succes! Joana will tell you all about it.

9:30 - 10:00 hrs F2CT: The Tonna legacy
10:00 - 10:30 hrs OE5JFL / I1NDP / I0NAA: Hunting for Pulsars

The detection of pulsars is one the most challenging and rewarding activity for an amateur radio station and facts are showing that amateurs well equipped for EME have good possibility to achieve this important result.
In 2016, after the WW EME conference in Venezia, a small “Euro Pulsar Working Group” with Andrea IW5BHY, Nando I1NDP, Hannes OE5JFL and Mario I0NAA was established exchanging experiences, information and best practices.
After few months, thanks to the software released by Andrea IW5BHY, all members of the group started to see the rst objects and Mario I0NAA released a program that allowed precise prediction of possibility of detection. Also, in order to avoid fake detections, the group established a peer-to-peer review process.
As of today, Hannes OE5JFL was able to detect >50 Pulsars and few months ago Nando I1NDP released new detection programs that allow to use high bandwidth SDR opening the door to even more challenging results.
In the presentation all details and results of this exciting journey will be given from the members of the group.

10:30 - 11:00 hrs Coffee break
11:00 - 11:30 hrs PA0HRK: A beginners journey

Many, many years ago I was inspired te become active with EME. However, the huge investment in equipment, the large antennasystem required and the necessary technical knowledge kept me on dreaming for many years. Until about 8 years ago when I learned that it would be very well feasible with modern technology. And that’s where my real journey started. Two years ago I made my first two QSO’s on 23cm in cw and last year my first 3cm QSO’s in QRA64, with (almost) completely home built equipment. I’d like to share with you some of my travel experiences, so as to inspire others.

11:30 - 12:00 hrs K2UYH: SSB moonbounce
12:00 - 12:30 hrs EME 2020
Table top presentations August 18/19

N2END: A Microprocessor-Controlled Antenna Polarization System
An amateur-built system to control the polarization of Yagi-Uda antennas is described. The system makes use of a stepping motor and reduction drive to mechanically rotate an antenna boom along its axis. A microprocessor combines operator input, antenna position data, and time from an onboard clock and controls the stepping motor appropriately. Interaction with the operator is carried out with a simple command line interface. It allows the operator to adjust the receive position for best signal, and when available, the spatial polarization offset may be entered, from which the optimum transmit position is calculated. The microprocessor will automatically move the antenna between receive and transmit positions at the correct time. The antenna can move through an angle of 90 degrees in less than two seconds, allowing optimized linear polarization on both transmit and receive for typical modes used in EME communication. Polarization control was implemented in a 432 MHz EME system using homebuilt 15LFA-JT antennas with rear-mounted booms, and results obtained with it are described. A working prototype will be demonstrated during a tabletop presentation.

EB3FRN: 10GHz low noise amplifier technique

DJ3FI: Cavity low noise amplifiers

For sale August 18/19

DK6JL
G3AAF
G4DDK

Noise figure measurements

PA7JB

Posters

UA3AVR / RW3BP
OK2AQ

Sectie

Sunday August 19th 2018

Partners:
9:30 hrs Start program at lobby Hotel Zuiderduin
– Visit KNRM
– Visit Lighthouse
– Coffee break
– Guided dune walk

Ham Radio Operators + partners:
13:30 hrs Goodbye lunch at Hotel Zuiderduin
End of EME 2018 conference

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