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The 1st
EME QSO from OM on 6m - OM3RRC & OK1TEH
For a long
time I wanted to try for a 6m EME contact. However, to make an EME QSO on
this band isn't as easy as it looks. Even the first EME QSO on the 6m band
(between W5SXD and K5WVX) was done on 30th July 1972, long time after
first QSO on 2m, 70, 23 and 13cm band. The main reason is that 6m band is
very sensitive to local interferences, especially in middle Europe, which
still allows 6m TV. Another problem is size of the antenna array and
necessity of good power, which is in many EU countries forbidden due to
potential TVI. On this band is also (compared to 2m), higher sky noise, on
the other hand the attenuation of EME path is the smallest of all EME
bands and it's "only" 242 dB in perigee and 244 dB in apogee. Since 6m EME
isn't easy, I liked the challenge (more so after using the new WSJT - JT65
mode).
Unfortunately, in Prague, 6m operation almost impossible because of
(compared to neighboring states) old analog TV in 1st television channel.
It seems to be ok, you can suppose that in short time period will be
analog TV broadcasting turn off and digital TV will move to UHF band.
However on 1st TV channel (in OK1) is still broadcasting TV Nova and this
station has license till the end of 2017 and it doesn't seem that analog
TV will be turned off any earlier. It's because of TV NOVA would lose
majority of viewers in Posazavi area, where is reception of terrestrial TV
broadcasting very poor and slow building-up of DVB-T net play up to using
of 6m band. More before the end of 90's the hardware of TV tower Cukrak
was completely reconstructed and today there is in operation, a modern
solid-state transmitter. So the TV Cukrak keeper hasn't any serious
problems with it so there isn't reason to turn it off. For better
understanding, I note that Cukrak is 400m ASL and the ERP is about 150kW
in horizontal polarization. For contact via Es with very strong signals is
enough to turn round polarization, unfortunately 6m EME isn't possible.
Only chance is go out of Prague and try it from some valley.
|
 W7GJ's
antenna for 6m -> 4x 6M9KHW |
So
I exchanged a few emails with Lance, W7GJ. Lance is one of the biggest 6m
EME propagators. In the past he was well known as WA1JXN, he has 2m/6m
DXCC (his outstanding web page can visited at
www.w7gj.com).
However, even if "magic band" allows us to make a contact via Es thanks to
multi hops, eventually via F layer (around Solar maximum), Lance has QTH
in the west part of USA a bit far, so he was looking for OM as a new DXCC.
With OK country he already
worked
EME contact with OK2POI from JN99AJ. So I exchanged with Lance several
emails and I recommended a few OM stations such a Rasta, OM3BH.
Unfortunately, very few hams have any experience with EME. When I found
that during summer holidays I'll visit my Slovak grandma in Povazska
Bystrica,
JN99FC,
in the same city where is placed radio club OM3ROM (OM3RRC) and friends
Rasto, OM3BH and his brother Vlad, OM3CLS (the most active Slovak 6m/3cm
ham), it was clear that this holiday won't be boring hi :-) I was little
bit afraid of QRM from OE TV tower Jauerling near to Kremze, Budapest and
mostly from very near
Ostrava- Hostalkovice,
where is again broadcasting TV NOVA on 1st channel with ERP power of
100kW... Luckily compared to Cukrak's area is west part of Slovakia and
OK2 covered by numbers of hills. So I said: well we'll see. If it's too
bad, we'll make a car trip to some of the nearby valleys.
First I thought that my FT847 with 100W power would be enough, but not so
according to Vlad, OM3CLS. Thanks to zero OM 6m TV broadcasting they have
no power restriction by the local PTU so Vlad, OM3CLS has at his home a PA
with GI7b tube. With antenna it's a bit worse, because OM3CLS only has a
2el HB9CV on the roof with very long coax cable.
Question
was, what kind of antenna should we use? During our journey to OM we
stopped in
Kovoplast
company in
Chlumec nad Cidlinou
town. We thought that it isn't necessary to build a professional antenna
while is in OK wide spread for over 40 years 5el Yagi
for the first TV channel! In antenna specification is written that SWR
should be about 1,8 and gain 6,5 dBd and input impedance classical 300/75
Ohms unsymmetrical. Advantage of this antenna consist of easy assembling
and transport (5el antenna should be enough, anyway the longer boom
wouldn't fit into our car :-) Disadvantage is that holders of elements are
weld fixed to the boom so there isn't chance for any kind of
experimenting. So me and my dad, OK1VPZ start a 500km journey with new
antenna to Slovakia. We brought FT847, equipment for WSJT, LNA MGF 1302
for 2m (I wanted to try make some MS and EME 2m qso), power supply and
undefined numbers of other stuff.
After our arrival in Slovakia I got good and bad news. The good one was
that Rasto, OM3BH well known as "Bohovsky Hrnko" (before his departure to
IOTA expedition in 9A) searched in his garage and finally found new packed
5el yagi by I0JXX, TNX! This antenna has gain by technical specification a
bit bigger then a TV antenna from Chlumec so I preferred it. The bad news
was that I forgot at home in Prague service cable between FT847 and power
supply. But I didn't give up so I make a trip to several electronic shops
in city. The contact plugs for the power supply weren't problem but how to
improvise special service cable for the FT847, except the right wiring
connection?
The place where I
planned to make a dozens of DX was QTH of local radioclub OM3RRC (this
radio club should use primary callsign OM3ROM but because the other
stations in CW contests ever received it like a OM3R, so I chose from more
secondary callsign - OM3ROM, OM3KNS, OM3RRC and OM3RDX - for this occasion
OM3RRC). Povazska Bystrica is, how I already wrote in text above, in
square
JN99FC,
so just a few kilometres from OK/OM border. The city is placed in the
valley of Vah river and it's surrounding by couple of hills around. Above
a city is hill, where is situated the local bloom of socialisms in 70's,
the block of flats named Rozkvet. And on the top of the hill, 391m ASL
(surrounded by blocks of flats) chapel St. Helen from 18.century. And near
the chapel on the ridge of the hill is school, where is placed local
radioclub with workplace for HF and 16el F9FT yagi for 2m (without
elevation of course). Inspection of radioclub was fine, mostly when I
realize that near houses are situated on the East and North side of hill
so the position during Moonset should be over school playground almost
without and obstacles. More in radioclub was fast Internet connection so
had to just bring my equipment and start the show. On the other hand the
2m thin coax cable was 40m long with connectors type contact plug (my
"favorite" anfenol). On the table was R2CW transceiver, crunched rotator
controller Sever (later I found that it's "exact" about +- 20degrees) and
above the whole equipment was old CRT monitor, which will be surely
producer of many "nice" birdies on the band. Summarize: equipment old more
then 20 years. But I had my FT847 set up for EME, LNA and lot of optimisms
:-))
And then, with excited support of other club members, we started with
building up the station. First we put on the table the tube PA, equipment
and LCD monitor. But where will we install the 6m antenna? The 5el I0JXX
yagi is fine, but installing it on the 30m high roof with very long coax
cable was unreal. In the end we solved it by putting the antenna on 6m
high contest telescopic mast (tnx guys!) and we secured it. The horizontal
rotation and elevation had to be manually. Advantage was that we only
needed an 8m long CCA cable between the PA and antenna. The first
measurement of SWR showed value of 1.4, which isn't the best due to 6m
resemblance to near HF we considered it as suitable hi. And then I turn on
the radio and suddenly appeared unbelievable pile-up. Luckily there was in
the same time Es on the 2m with scatter point somewhere above JN89, which
was too near for us on 2m. However on the 6m band the situation was quite
different because of ufb short-skips into densely populated area, into DL
:) And now try to imagine that you have on 6m almost 300W (PEP) PA and 5el
antenna turned in that direction. Vlad, OM3CLS like it very much because
we made such a DX like LX2LA, what is on Es for the small distance quite
rare. So we tested 6m equipment and fully satisfied. The only problem was
local QRM, I'll mention about it further. However I found another problem.
Because I was in the past operator of Czech D class converted into A
class, I haven't CW exam (even if I used to run CW quite often). So thank
to old Slovak license rules I had in OM the same rights like in our old D
class in OK. It meant that I was allowed to operate on 2m - up with
maximal power of 100W and was prohibited 6m band at all. So contacts on 6m
I had to let to Vlada, OM3CLS while I was standing behind his back and we
decided to use call sign OM3RRC. But let's back up and talk about the
antenna. We couldn't put it in front the windows of radio club and go home
because of wild night life, robbers and so... So it was clear that we had
to dismantle the 6m antenna after each EME test.
And how about conditions? While we were building up equipment EME
conditions were very bad with high signal degradation and high sky noise
(it's compared to 2m on 6m was much higher). Another problem was with
W7GJ. The distance from Montana to Prague is like that when the Moon is
rising in Montana we usually have in OK just few degrees before our
moonset. The consideration was that even when the Povazska Bystrica is
from W7GJ about 360km further then Prague, our EME window will be shorter
but not rapidly. Contrary was the case. In fact on the break of July and
August 2007 was Moon in such a position the we have in OM no window into
W7 at all. But anyway we suffered from high level of QRM just from the
moonset direction (from the high voltage line). Lucky that friends from
radioclub helped me again. They took old "Dolphin" for ARDF with mounted
HB9CV and started looking for the QRM source on the 22kV high voltage
line. They succeeded and after agreement with the high voltage keeper they
solved it very fast, VY TNX!!!
In the breaks
between house work and waiting for the W7 EME window, I was running MS on
2m. In that time was slightly coming MS shower Perseids so conditions were
getting better and better day by day. During my stay in OM between 26th
July - 5th August I worked on 2m like OM3RRC about 45 completed MS
contacts. What I found interesting was that I was for plenty of stations,
mostly from PA, their new square (JN99). As a ODX I worked contact with
Charlie, EI5FK on distance of 1929km. During my enjoyable 2m operation
visited OM3RRC radio club lot of young hams, mostly that younger ones who
I tried to dedicate to VHF DX as far as it was possible. And how about 2m
EME? Even without elevation and several meters of long RG213 cable we
managed together with OM3CLS 15 EME contacts in JT65 with stations:
RK3FG-25, OZ1LPR-23, RU1AA-19, PA0JMV-21, S52LM-26, DK3EE-18, UA9YLU-29,
WA4NJP-26, LY2BAW-25, ES6RQ-24, RA3AQ -23, HB9Q-19, EB5EEO -23, W5UN -26 a
WQ5S-24dB. Unfortunately we didn't make a 2 way contact with ZL3TY, K9DX,
K7XQ, SM5CUI and mostly with Jozef, OM3BC what would be the first 2m EME
contact OM-OM. Unfortunately even if we saw each other the tropo signal
was too strong to decode. Interesting was discover completely different to
premise that I'm not able to work with this antenna up to 15 degrees of
elevation. However I was able in hot operation work more then until 30
degrees. Maybe it was caused by a tin roof just a few meters below
antenna, hi. And the best in the end: Ground Gain effect. When Moon was
rising, it was rising through 100m far and 20m higher block of flats which
caused extensive noise. But when Moon was setting and we have window into
W, the Ground Gain effect worked very well. Why not when antenna was some
20m above terrain and and in front of antenna was the ridge of the hill
with soil and grass without any trees with length more then 1km followed
by the small valley and then meadows and meadows. It was very important
for the further 6m EME tests. But will be 6m antenna for the Ground gain
high enough? Because the Ground Gain can amplify signal about +6dB however
the height of the antenna is very important. But we haven't any time for
such a theory.
During our first 50MHz test with W7GJ we had for the contact just 10min
long window. When he got Moon on the moonrise we had it just 2 degrees
before moonset. We passed the night at radioclub and very early in the
morning we met with others. They come to look if we make it for the first
time. More during assembling 6m antenna we found in the boom 3 mummified
misses which tuned up the SWR before :) So one advice for the future
assembling the 6m I0JXX antenna: you can blow into boom but don't try to
suck up :o))
In the mean time
W7GJ was ready on the chat in case we did not make it. We set up frequency
50,190 and JT65A. Yes that's true, on 6m band EME operation uses JT65A,
contrary to 2m in JT65B. Outside was clear sky, almost full red Moon was
setting down to the horizont, just 1 degree left and still nothing. First
test wasn't successful. So we were a bit unhappy but as we have Czech
saying: "There isn't village-fair every day". The next day the distance
between Earth and Moon will be better and EME window should be a bit
longer. I was a bit afraid about oversleeping the sked, so I stayed wake
up the whole night till the sunrise.
Even one note: we let
antenna stay outside from last day, luckily night was quite with sky
without any clouds and harvester Moon was shining bright. And one more
change from the yesterday sked, we identificated remaining source of 6m
QRM. Never put a switch mode power supply next to the transceiver!
Scattered magnetic field of ferrite transformer can produce a nice 6m
interference.
The
clock showed 04:19 UTC what was 06:19 h local time. We had just 12 degrees
left to the moonset and in 8418 km far Montana starting moonrise, so: go
go go! And then suddenly at 04:39 UTC, when we had Moon some 8 degrees
high and Lance, W7GJ about 2,5 degrees, appeared out for the first period
weak but then stronger and stronger and then even super-strong signal,
loud enough on speaker: OM3RRC W7GJ DN27. Signal is tune just 43 Hz up
from the expected frequency! Doppler was only 16 Hz and degradation -2,5
dB. Why I say only? Because during moonset or moonrise is Doppler maximal
thanks to phase velocity. On 2m would be in the same time about 300Hz but
on 6m it's just that 16 Hz, a bit unaccustomed, hi. Next to radio is Vlado,
OM3CLS and I run outside to correct antenna direction. Vlado in the mean
time trying the 150% power from the PA. I have to restrain him. With burn
out PA we'll not to make it! And then when Moon rise to 3,5 degrees in
Montana we heard laud melody from our headsets, signal got over incredible
value -16dB and it's still getting better, I love you dear Ground Gain!
But most important was then W7GJ sent us couple of "O". Then RRR. 73 and
first Slovakian 6m EME QSO became true. Then we tried make with Lance CW
contact as well however our power is too small for that, we heard him FB
but with our one GI7b tube when is Moon over time moving behind horizont
it isn't enough.. Lance saw us in peek some -28dB. But never mind, CW QSO
would be nice indeed but even with digital contact we entered in history
annals of Slovakian EME operation, hi.
The sound record of W7GJ's signal at time when
he sent us in JT65A "OM3RRC W7GJ DN27 OOO" you can listen (best about at
23.seconds)
here.
The final RRR are
here.
And what equipment was used during the first
EME QSO? On our side it was 5el I0JXX with gain about 9dBd (http://www.i0jxx.it/Antenne/5jxx6/5jxx6e.htm),
short 8m long coax cable and PA with GI7b tube, cca 180W out in WSJT. On the
W7GJ's side it was 4 times M2 antenna 6M9KHW and 1500W.
I'd like to congratulated to our friends from
radioclub OM3ROM / OM3RRC on the common success and especially thanks to
Vlado, OM3CLS, Rasto OM3BH, Ruda, OM4TQ, Vlado, OM3BY and to other club
members, especially to Raman OM4ATY, Lukas, OM4ACK and Palo OM4AQM who
helped us during setting up the antenna.
I believe that EME 6m (but 2m too) operation
with my departure in OM3RRC will continue.
And how about year 2008? On 6m are also active
stations from ZL, we'll see :-)
73 Matej, OK1TEH
PS: On the only one common (not so good) photo you can see main hams
involved in this 1st QSO. From left OM3CLS, OM4TQ and OK1TEH.
LOGS
MS LOG OM3RRC JN99FC (CS = complete on sked / CR - complete on random)
------------------------------------------------------------------------------------------
26.07.2007 18:50 144.390 UU1DX R37 27 KN74BW 1274 Perseids #001 1843-1850 CS
26.07.2007 19:33 144.360 RZ3AED R26 27 KO86RD 1498 Perseids #002 1930-1933 CS
26.07.2007 20:18 144.360 F6DRO 26 R26 JN03TJ 1440 Perseids #003 2002-2018 CS
27.07.2007 18:40 144.3?? PE1GNP R26 26 JO31IX 891 Perseids #004 1845-1840 CS
27.07.2007 18:54 144.3?? RX1AS 26 R27 KO59FX 1433 Perseids #005 1845-1854 ??
27.07.2007 19:47 144.360 PA4PS R26 26 JO33GH 954 Perseids #006 1940-1947 CS
27.07.2007 20:25 144.355 IT9CJC R36 26 JM76GS 1406 Perseids #007 1958-2025 CS
27.07.2007 20:40 144.347 IK0BZY 26 R26 JN61GK 968 Perseids #008 2033-2040 CS
27.07.2007 21:33 144.361 RX3AGD R26 27 KO85UR 1495 Perseids #009 2108-2133 CS
27.07.2007 21:50 144.360 PA4EME 26 R27 JO20WX 923 Perseids #010 2147-2150 CS
27.07.2007 22:12 144.378 YL/DL1RNW 26 R27 KO07TL 955 Perseids #011 2159-2212 CR
27.07.2007 22:30 144.360 EB3JT 26 R26 JN01UI 1567 Perseids #012 2222-2230 CS
27.07.2007 23:00 144.360 OH2HEJ R26 27 KP20ME 1303 Perseids #013 2244-2300 CS
27.07.2007 23:12 144.3?? PE1OPK 26 R26 JO23UE 999 Perseids #014 2307-2312 CS
28.07.2007 17:21 144.360 PA3FPQ R26 26 JO22XE 946 Perseids #015 1712-1721 CS
28.07.2007 18:06 144.3?? SV2JL 26 R26 KN10LO 1009 Perseids #016 1732-1806 ??
28.07.2007 18:23 144.360 OH4LA R26 26 KP20LG 1310 Perseids #017 1813-1823 CS
29.07.2007 00:04 144.370 LZ3RR/P 27 R27 KN32AS 915 Perseids #018 2358-0004 CR
29.07.2007 00:36 144.380 YO9HP R26 26 KN35BA 737 Perseids #019 0027-0036 CR
29.07.2007 01:05 144.360 LZ4KK R26 26 KN23XU 819 Perseids #020 0048-0105
29.07.2007 01:24 144.362 PE1GUR R26 26 JO22TH 972 Perseids #021 0120-0124 CS
29.07.2007 04:32 144.360 RX3QFM R36 26 KO91FM 1445 Perseids #022 0422-0432 CS
29.07.2007 04:55 144.360 ES3RF R26 27 KO29IF 1197 Perseids #023 0444-0455 CS
29.07.2007 05:10 144.360 UA1ALD 26 R26 KO49KO 1300 Perseids #024 0444-0510
29.07.2007 05:51 144.3?? EA6FB 26 R26 JM08PV 1776 Perseids #025 0532-0551
29.07.2007 07:46 144.3?? F6GRB 26 R26 JN26KP 1094 Perseids #026 0740-0746
30.07.2007 16:01 144.363 UT5JCW 26 R26 KN64SN 1253 Perseids #027 1549-1601
30.07.2007 23:19 144.370 LZ1KJ/P R26 27 KN32 Perseids #028 2313-2319
31.07.2007 00:37 144.3?? SM5CUI 26 R27 JO89WW 1207 Perseids #029 0031-0037
31.07.2007 01:20 144.360 G4DEZ 26 R37 JO03AE 1361 Perseids #030 0116-0120
31.07.2007 01:45 144.3?? ON4PS 26 R26 JO20KQ 989 Perseids #031 0124-0145
31.07.2007 02:01 144.360 SK2AT R26 26 KP03DU 1646 Perseids #032 0140-0201
31.07.2007 02:11 144.3?? PA3COB R26 27 JO32MF 877 Perseids #033 0208-0211
31.07.2007 23:33 144.370 I8KPV 26 R26 JN70KO 986 Perseids #034 2322-2333
31.07.2007 05:09 144.360 TK5JJ 26 R26 JN41JW 1095 Perseids #035 0453-0509
01.08.2007 00:03 144.360 EI5FK R26 26 IO51RT 1929 Perseids #036 2350-0003 CS ODX
01.08.2007 00:29 144.360 RN6DJ R26 26 KN96VC 1633 Perseids #037 0013-0029
01.08.2007 01:02 144.360 RA3LW R26 26 KO54MQ 1063 Perseids #038 0037-0102
01.08.2007 22:23 144.360 G6HKS R26 26 IO92OB 1398 Perseids #039 2302-2223 CS
02.08.2007 07:50 144.3?? OH6KTL R26 27 KP02OJ 1490 Perseids #040 0726-0750
02.08.2007 19:47 144.379 YL1XW R26 26 KO36SH 1009 Perseids #041 1020-1947 CS
02.08.2007 23:49 144.359 GM4CXM 26 R26 IO75TW 1715 Perseids #042 2319-2349 CS
05.08.2007 02:37 144.365 RA1AY 26 R27 KP50EA 1433 Perseids #043 0215-0237 CS
05.08.2007 03:06 144.370 UT6UG 26 R27 KO50EI 869 Perseids #044 0254-0306 CS
05.08.2007 07:11 144.363 SM2ILF 26 R26 KP04NP 1738 Perseids #045 0652-0711 CS
ELEVATION PROCESS DURING
6M EME QSO OM3RRC-W7GJ
UTC OM3RRC W7GJ
--------------------
0400 16.1 -3.1
0410 15.0 -1.5
0419 13.9 -0.2
0430 12.4 1.7
0440 11.9 3.3
0450 9.7 5.0
0500 8.3 6.6
0510 7.0 8.3
0520 5.5 9.6
0530 4.0 11.2
0540 2.7 12.5
0550 1.3 14.0
0600 0.1 15.5
0610 -1.2 16.8
TROPO
OM/OK1TEH/P JN99FC km
---------------------------------------------------------------------------
01.08.2007 1754 144305 OM/OK1VVP/P 59 59 KN09CH 130 ok1vvp@atlas.cz vaclav
01.08.2007 1817 144290 OM3WKX 59 59 JN98CF 99 10W + 9el f9ft
01.08.2007 1824 144290 OK1IA/P 59001 59001 JN89EJ 155 Veseli na Morave
OM3RRC JN99FC km
---------------------------------------------------------------------
25.07.2007 1859 144305 OK1NMP 59 55 JO70XD 215 Belecko
25.07.2007 1903 144305 SP9EWO/9 59 59 JN99LP 70
25.07.2007 1926 144305 SP9AI 59 59 JN99MT 89 Rudi
25.07.2007 1929 144305 OK2MV 59 58 JN99CT 81 krc na balkone
28.07.2007 1946 144290 YO2LEA 59 59 KN06WK 392 350W 17el f9ft
02.08.2007 1908 144230 I4XCC 55 53 JN63GV 736
04.08.2007 2055 144285 T77NC 55001 55 JN63FW 736
EME LOG 144 MHz - OM3RRC JN99FC
2007
QSOs worked by OK1TEH on 2 m :
Mode: JT65B
Loc: JN99FC
-------------------------------------------------------------------------------------------------------
Date | UTC | QRG | Call | TX/RX |RCVD dB | Loc | km | ANT + PWR |init| WAS | WAC
-------------------------------------------------------------------------------------------------------
28.07.2007 2022-2032 144.111 RK3FG 0 R0 -25>-26 KO86HP 1477 4x12el Y + 1200W 01# EU
28.07.2007 2148-2154 144.111 OZ1LPR 0 R0 -23>-2? JO44UW 883 4x20el Y + 1000W 02#
30.07.2007 2048-2054 144.135 DK3EE R0 0 -18>-21 JO41GV 769 4x24el Y + 1500W 03#
31.07.2007 2101-2103 144.127 RU1AA R0 0 -19>-2? KP40XD 1432 4x15el Y + 2000W 04#
31.07.2007 2140-2148 144.138 PA0JMV 0 R0 -21>-28 JO21PM 975 4x10el Y + 2200W 05#
31.07.2007 2239-2236 144.131 S52LM R0 0 -26>-30 JN65TX 512 4x17el Y + 1500W 06#
01.08.2007 2012-2014 144.126 UA9YLU R0 0 -29>- MO92EO 4116 4x15el Y + 1000W 07# AS
02.08.2007 0617-0621 144.148 WA4NJP 0 R0 -26>-28 EM84DG 8011 16x11el Y + 400W 08# GA NA
02.08.2007 0633-0635 144.122 W5UN R0 0 -26>- EM23MG 8767 32x17el Y + 1500W 09# TX
02.08.2007 0707-0709 144.122 CT1HZE R0 0 -23>-27 IM57NH 2559 4x11el Y + 1500W 10#
02.08.2007 2016-2018 144.114 LY2BAW R0 0 -25>-26 KO25KA 791 4x18el Y + 1000W 11#
04.08.2007 2141-2145 144.149 ES6RQ R0 0 -24>-22 KO28WA 1106 8x17el Y + 1500W 12#
04.08.2007 2152-2156 144.118 RA3AQ R0 0 -23>-17 KO86JE 1464 6x36XP Y + 1000W 13#
04.08.2007 2202-2206 144.115 HB9Q R0 0 -19>-22 JN47CG 789 8x19el Y + 2000W 14#
04.08.2007 2238-2242 144.138 EB5EEO R0 0 -23>-26 IM98PG 1950 6x18el Y + 1000W 15#
05.08.2007 1003-1007 144.146 WQ5S R0 0 -24>-27 EM13RC 8872 4x12el Y + 1000W 16#
The sound record of Tom, DK3EE 2m EME signal is here.
hrd only, or not completed by final RRR:
K9DX -18, W0HP -27, ZL3TY -29, SM5CUI -26, K7XQ -24, UA4AQL-23, RA4HCN-26, ES5SE -25, DJ9CZ -27, I2RV -27
The horizont - 360° view (for more
details pse click on the photo)
The North view to the city
The Dolphin for ARDF with HB9CV - good tool for QRM searching
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