C21GJ in RI39ll

W7GJ 6m EME DXpedition
September 28 - October 14, 2018

Republic of Nauru

(CQ DX Zone 31, IOTA OC-031)

Antenna Location at Budapest Hotel on the northeast shore of Nauru is indicated by red astetisk.



Providing the first ever 6m contacts to the United States from VK9C and VK9X last fall is a tough act to follow!  In order to keep up with this high standard, this year I am again activating another new DXCC that has never been contacted before on 6m from the United States.  I am confident it is also quite rare in Europe, Africa and other countries in North and South America!   Since it is the bottom of a very poor solar cycle, there of course is no chance of making any long distance contacts on 50 MHz via the ionosphere.  However, I believe I have located a good site to operate EME (moonbounce), and will be active there during optimum days of the month and time of the year to take advantage of the superb EME conditions afforded at this point in the low solar cycle!  Since this country is VERY rare, I am looking forward to providing a new DXCC to virtually every half million mile contact.  In order to provide sufficient advance planning for stations wishing to contact me while I am in Nauru, I am providing plenty of advance notice of this DXpedition. I urge you to gain experience with JT65A and follow my Step-By-Step JT65A Setup Checklist to make sure you are using it properly for EME!  And especially review the QSO PROCEDURE that I use most effectively on these DXpeditions.  Remember also to use the SHORTHAND messages (the two tone RO, RRR and 73) in JT65A!  I look forward to contacting you on 6m!

As you know, a good location can mean everything to the success of one of these DXpeditions.   Over the last few years, I have been looking for a suitable QTH in C2, and think I finally found one that shows some promise.   When I finally found the above location, I decided to go for it even though it is so far away and is so expensive to reach from Montana.  The above photos show you some of the key reasons that make this a highly desirable location:

1. Reliable AC power
2. Proximity to the ocean on moonrise for ground gain with both EU and NA and lengthened window with NA stations
3. Located such that the antenna will never be aimed at the village or any buildings during common moon windows, decreasing the chances for receiver noise
4. No buildings, hills or other solid structures on the ground between the antenna and the ocean on moonrise or during EME operation.
5. Secure and safe location for the equipment

Background on Nauru can be found here.  My VISA to enter Nauru is here.  My tentative operating schedule as an Excel spreadsheet is here, in pdf is here. The local time is 12 hours ahead of UTC. The maps show where in the world this remote place is located - 1800 miles southeast of Guam, 1500 miles east of Papua New Guinea, 1400 miles northwest of Fiji, and 700 miles northeast of the Solomon Islands!  I hope you will make the effort to look for me!


Because of the lengthy plane flights, in addition to the layovers waiting to connect with weekly flights from Fiji to Nauru, there are a number of days required just in traveling!  However, I expect to have everything operational in plenty of time for the optimum EME conditions.  The remoteness of this location causes the common moon windows with EU and NA to be relatively small.  However, these days DO include the lowest Degradation days of the month (also over a full moon weekend), so I hope that will provide enough opportunity for people who are serious about working me on 6m EME.  And, its location does permit moonset windows with most of EU and all of NA.  There will be a chance for some moonrise windows with eastern EU stations while I am elevated.

I will be leaving home early on September 25 and plan to finally arrive Nauru on the evening of September 28.  I hope to be QRV by moonrise on September 30.   I plan to tear down around October 11 or 12 and depart for home on October 14.   The location planned for the antenna provides a view of moonrise over the ocean, which is 30' below the antenna.   Because of buildings to my west and northwest, I expect to have no ground gain on my moonset, and too much noise that direction to be active on moonset anyway.  The location was chosen because I have common moon with all of Europe and the Americas during my moonrise out over the ocean.  For those European stations who need to contact me on their moonrise, I will try to remain active until the moon sets in western Europe.   Since there is no common moon with the East Coast of North America during their moonrise, I will shut down after moonrise in western Europe.   Of course, if I find I have contacted everybody in a region, I will not stay on during that period.  Since I am very close to the equator, the moon will go very high for me when I am aiming to the north.  Please remember that I do have difficulty elevating over 50 degrees, and I lose any ground gain above 45 degrees elevation.  So, if you can, please look for me when my moon is lower than 45 degrees. 

Depending on where I am able to fit the antenna on the site, I may be severely restricted in aiming to the west for European moonrise.  The only thing I feel confident about is my ability to be able to aim out over the ocean on my moonrise.  So, if you can, please try to contact me when my moon is further east than about 295 degrees azimuth.

I expect to have access to the internet where I am setting up, although I probably will not have time to watch the internet while I am trying to operate EME.  I should be able to update this page daily with progress reports and stations worked and will also be sending out the same updates to the Magic Band EME email group.   I also will try to check in from time to time on the ON4SKT EME CHAT page.


The plans for the 6m station are essentially the same as used at VK9CGJ and VK9XGJ last year, although I have had to trim back the weight even more due to the more restrictive carry-on limits on the international airlines involved this year.   I intend to use a Yaesu FT-857 (modified to drive my amplifier, as shown here) with my Mirage KP-1/6 external preamp, and an M2 6M1K2 amplifier.  This year I will be using a single Meanwell RSP-3000-48 220 VAC switching power supply (since I will definitely have 240 VAC) for the 50 VDC required by the amplifier, and the PowerWerx SS-30DV 110/220 VAC switching power supply to provide 12 VDC for the transceiver and preamplifier.  The 50 VDC from the power supplies is connected to the 6M1K2 amplifier via a twisted pair of #8 stranded copper wire cables, attached to the #10 pigtails coming out of the amp using a 50A battery cable connector (NAPA #740234, like a really big Anderson Power Pole connector).   After connection failures in VK9 with the standard Yaesu 12 VDC power connector plug, I am also now using a NAPA #740234 for my 12 VDC connection to the FT-857.

Prior to the VK9 DXpeditions in 2017, I purchased an ARR MSP50VDG RF-switched preamp that I modified to provide a separate preamp output. This output can then drive my USB RTL Dongle (NooElec NESDR SMArt - Premium RTL-SDR w/ Aluminum Enclosure 0.5PPM TCXO) which is used with Virtual Audio Cable and SDR-Console Version 3 to provide another receiver option.  A small 50 MHz bandpass filter from Down East Microwave is used ahead of the RTL Dongle to prevent overload from out of band signals.  I will be using that as my main receiver, since it worked so well from VK9.  I also plan on using my MSI 17" inch gaming laptop with a large display screen to allow me to have more windows visible at the same time.
A RIGblaster Plug & Play interface is used with my Windows 10 64 bit laptop computer to operate JT65A for EME mode from WSJT10.  At this time, I plan to use JT65A mode in the WSJT10 Version 6088 program release.   I have found it to be just as sensitive as WSJT-X on JT65A, and it uses less screen and CPU processing, and currently has features that make it easier to work pileups on EME.   HOWEVER,  I very well may use WSJT-X modes such as FT8 for beaconing or terrestrial contacts. 

The antenna again is my 6M8GJ yagi with my home-made manual elevation mount and fed with 110' of low loss LMR600 low loss cable (for a total feedline loss of under .75 dB).  I usually try to use only 75' of LMR600, but it appears that there may be obstacles to the building that will require this extra length to work around.  So, I have already prepared the coax and have jettisoned some of the usual grounding hardware to help offset the extra coax weight. 

As you can see from reviewing the results from previous 6m EME DXpeditions, many contacts were made with single yagi horizon-only stations.  The smallest station contacted from all the DXCC so far was N3CXV with his single 6M5X yagi.   If you have a good yagi, good ground gain, a quiet QTH, good power and lots of patience, we should be able to complete!  This is especially true with western EU stations, since there may be many situations in which we should both have ground gain at the same time! 


If you copy me, please spot me on the DX Cluster so people will know the correct grid locator, as well as the frequency and my status.   I will diligently try to be QRV during all my moonrises as published on the operating schedule.   The antenna should have a good view at a height of 30' over the ocean, and it will soon become clear after a few moonrises which elevations are best for my ground gain lobes.   Please watch the ON4KST EME page and/or the DX Cluster for updates on what people are copying and when. 

Please keep calling me even if you copy me working someone else.  As long as you are not on the same frequency as the other station, you will not be interfering with them.  Please coordinate your calling frequency with others on the ON4KST EME chat page to prevent interfering with each other - ideally, stations should be spread out every 200 Hz.  I try to decode all callers every receive sequence, and I make a note of each caller and their DF so I can reply to you as soon as I am able, or
use that DF to identify you later if you are copying me (by sending me OOO - see the special DXpedition QSO procedure link above). Therefore, NEVER change your transmit frequency after you start calling - pick a clear frequency nobody else is using and stay on it!  I will try to contact any callers I can copy, but first priority will be given to people who are copying at that particular time, contributors, and stations with shorter common moon windows.  

Because of my location in the South Pacific, the only possibility for ground gain with NA is during my moonrise or your moonset.  Since the Degradation INCREASES and the EU window DECREASES after October 8, I expect most the activity to be between Sunday, October September 30 and Monday, October 8.  Degradation is still acceptable and I certainly will have continued windows with eastern EU stations and all of NA for several days past that, so I will continue to be as active as possible.

NOTE TO ALL STATIONS:  The days of lowest Degradation are October 5 to October 8,  which includes a weekend ;-)  How much more convenient can it be for you?   However, please be aware that, after October 2, the Declination moves further south, which makes my moon even higher.   So, especially for horizon-only NA stations, please pay attention to my elevation and try to contact me when my moon is lower in elevation,  when (or if)  I have ground gain.   Remember that I am using a single yagi, and it can be elevated only to a maximum elevation of 65 degrees (with great difficulty, trying to interlace the elements between the guy ropes), and if the guy ropes are wet, the elements are shorted out causing high SWR, making operation impossible.  I have a lot better success when my elevation is below 45 degrees.  So....even if you figure we have plenty of common window time, PLEASE don't wait until my elevation is too high to work you - if you are horizon-only, I encourage you to try to contact me earlier in the trip when my moon is lower than 45 degrees elevation if at all possible!  There is also another reason for trying to contact me when my moon is lower -  Because my antenna is only 20' above the ground, I do get some additional ground gain when my moon is below 45 degrees elevation.  That is one reason why I have been so successful on 6m EME with only a single yagi! You will also notice that I do have a short window with western Europe during my moonrise during the first half of the operation.  If you are in North America and you have a 6m EME array with elevation, PLEASE WAIT to call me after the moonset in western Europe - MNI TNX!!!

On the above tentative operating schedule spreadsheet, I have indicated times when the elevation is over 50 degrees by marking the time periods with diagonal lines throughout the cells.  If possible, I will try to remain QRV when the moon is high and elevate as high as I can, especially during the days of lowest Degradation.  However, if nobody seems to be around, I may choose to go QRT if nobody shows up during those periods, or if I have already worked stations whose moon is on the horizon during those periods.  I noticed that I was able to make some contacts even at high elevations when I was in VK9 last year, but many stations stayed away assuming that I would simply not try when the moon was high.  Please check on the ON4KST EME CHAT page for updates regarding my activity during such periods.

Please also note that  heavy rains can create a 1.5:1 SWR on the antenna, which is high enough to shut down the amplifier.  So, I may have to be off the air at times.  Please just keep watch on 50.190 and I will try to stick to the published schedule as well as I can.


As explained above, expect to be able to send out daily updates to the MAGIC BAND EME email group and revise this website daily with a list of the stations worked.  Please watch the MAGIC BAND EME email list for updated information.  Please also share any updates with others on the ON4KST EME CHAT page.  If there is some question regarding a contact, please DO call again.  However, once you have confirmed a contact with me, please do not call for a second contact - some of the common moon windows  during the lowest Degradation periods are very limited, and many stations are expected to be calling.  

Sorry, no LOTW, eQSL or other newfangled ways of confirmation.  I will be using old fashioned photo QSL cards.  Please QSL DIRECT with SASE (foreign stations include a current IRC or $USD for postage) direct to:

Lance Collister, W7GJ
P.O.Box 73
Frenchtown, MT   59834-0073

If we have completed an EME contact, I am happy to QSL direct to you at no additional charge.  However, I will very much appreciate receiving your card and a self addressed envelope to relieve some of the burden of looking up all your addresses!

For EME, I plan to operate on 50.190 and will always transmit in the first sequence JT65A mode.  Please check the ON4KST EME CHAT page for news from other hams in case I have to change this frequency due to receiver birdies at my end !  If you should copy me on some ionospheric mode while I am pointed at the moon and calling CQ on JT65A mode, please answer me on JT65A mode and let's make a contact!  It is very inconvenient for me to switch modes while I am calling CQ or working EME stations on JT65A mode, so please do not call me on CW or SSB or FT8 and expect me to switch over to answer you.   When I am not aimed up at the moon, I very well may be on SSB or FT8 mode.  For FT8, I will be using 50.313 MHz.

It is extremely expensive to haul a 6m EME station halfway around the world to this location - and the excess baggage charges alone are actually more expensive than the very expensive plane tickets! Too many times, we hear DXpedition stations say they can't take a 6m beam and/or amp because "they are already overweight and cannot afford the excess baggage fees".   If you want to do a good job and are committed to going halfway around the world to succeed, this unfortunately is a large part of the necessary expense.   Although I always keep my costs as low as possible, my travel, excess baggage and lodging costs alone will be over $8000.  Therefore, any contributions toward the DXpedition are greatly appreciated!  If you would like to contribute, please send your contribution by check or cash to my QRZ.com mailing address, or directly via PayPal to my email address, which is my current PayPal account.  I am only able to do these long distance 6m EME DXpeditions every year because of the continued support from the 6m community and I am extremely indebted to you for your continued support.   I have the time and equipment to go more often than once a year to new rare DXCC, but I just don't have the finances available.  Many thanks to the following hams who have already very generously contributed to this DXpedition:


MNI MNI TNX for your continued support!!

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This page last revised on  11 August, 2018