Ogasawara 2008 Project - 2m EME by JD1BLY and JD1BMP
If I remember, EME activity on JD1-Ogasawara has been only once by 7J1YAM team in 1998.
Their equipments are 2 x 12 elements Yagies, 200W legal power and managed a few QSOs
on 2m CW mode. There is very difficult problem to get higher power station
license for 2m and above in Japan (as you know, Ogasawara is in Japan).
To have higher power license, we must pass direct inspection by Postal Telephone and
Telegraph division of Japanese government but no PTT office in Ogasawara and the
distance between Tokyo and Ogasawara is 25.5 hours journey by ship. So that nobody
tried to get the
license. Last spring we decided to go
Ogasawara 2008 project which
includes high power 2m EME operation.
JI5RPT as JD1BLY, Makoto started
hard negotiations with PTT to dispatch inspectors to Ogasawara. As a result, two
inspectors stayed in shack at Ogasawara and we could get the station licenses, 1kW on
160-6m, 500W on 2m, 100W on 70cm.
Way to the 1st. contact
At first, Makoto arrived Ogasawara alone on Feb. 13rd. and he built all our
antennas that are Aki special for 160m, full size verticals for 80/40m and 4 x 11 elements
Yagies for 2m by himself. I got together with him at noon Feb. 19th with two PTT inspectors
after 25 hours half seasickness. Inspection has done without any problem in the
afternoon but we could not success any QSO on 2m. We got some bi-directinal signals only
with JH0MHE Shiro and JR3REX in a few hours. Bloody hell! We had a mistake in matching phase
by incorrect direction by antenna manufacturer. I came to term with inability
to get any station at 1st. day. I went to bed before the European window because
I felt tired. So we lost best window in our expedition. Next morning we
fixed the phase match and completed beam pattern test.
I, JD1BMP started calling
CQ on 144.075 JT65B 1st. sequence from 09z. We got a -20dB signal from VK2KU
and completed the 1st. ever with him at long last, 0940z on Feb. 20th. And after
two ZLs QSO has managed by JH0MHE as the pilot station at 1014z. We could
get a great pileup like a good modern music because here located in low noise extremely,
so -24dB signal was able to got by our ears! The 50 of EME QSOs have managend at that day.
I went to bed with great satisfaction after breakfast in that morning.
Day by day
On Feb 21st., we succeeded 28 QSOs. We heard good music in that morning too.
We started to get HB9Q on 70cm but we couldn't reach to him by QRP setup.
We managed 2 JAs and 6 Ws only at the NA window on Feb. 22nd. Condition has
changed worse. 12 QSOs have managed at that European window.
It was rainy, we couldn't see the moon and we tried a blind flight on Feb. 23rd.
The echo of calling CQ by K9MRI was strong and we started calling CQ but no taker
has got at that NA window in that day. We could get a great grand gain at that European
window. Before 8 degrees there were some takers but we couldn't complete even one
QSO with rapid faraday rotation. Even in such condition we managed many QSOs with GG
at that European window. Our total EME QSOs has been 104 then.
Total QSOs were 114 QSOs on Feb. 24th. DGRD was no good but it was easy to copy many station.
It was final day for EME operation and no window for NA on Feb. 25th. At 10
degrees we got great our echos but we worked only a few contacts. The last QSO was
worked with DD0VF. We have managed total 119 2m EME QSO with 6 days operations in
2m EME logs are here.
We will start to send QSL cards for request by 2m EMEer from 3rd. week of March. Please
enclose SAE and 1 IRC or 2 GS in your QSL card envelope.
Season. At deciding the schedule, we looked around about DGRD only and we did not do
about window length for NA and Europe. And midnight to early morning operations
were harmful for us. It would be easy in that we had the moon in daytime. At next Ogasawara EME activity, we want to tour around and see many other thinks.
Antenna. A Japanese antenna manufacturer's 4 Yagies were looked at good performance but those packages
are too long size for handling by the carrier. And faraday polarity rotation was often
aggravated us. We will have to get compact dual polarity array for field operation.
Time base. We prepered Garmin GPS-III and installed GPS software into the PC but that system didn't work well. We set PC clock by hand while watching the radio-controlled clock.
6m, 70cm EME and HF RTTY. Shortage of resources was happened, only two operators, single band operation at same time and limited power source (100V 30A). We couldn't reach to any station on 70cm and we were not able to work for 6m at that time. We will try to work
for 6m in the next activity in Ogasawara. HF RTTY remain at the 400 QSO level.
SAKAIURA FAMILY: guest house and shack
JM1LJS(JD1BLK), JD1BKW and JI5USJ: many informations and arrangements
JH0MHE: pilot station
JM1GSH and JG8SUV: EL rotator
7N2JZT: our logo
DL8EBW: online log
And all of EME friends!!
Our project home page is here.
Copyright 2008 JM1WBB, Isao SEKI
All rights reserved.