2304/2320/2424
MHz:
Sri, no chance for EME anymore. Persistent terrible local QRM from
wideband data BPL eliminates any EME activity on 13cm bands.
3400
MHz:
Got problem with RX path in transvertor just when contest started. Trouble
solved next day when OK1VAO drove back and force for another transvertor
to be used as separate RX, hi.
After fixing the QRG issue with separate TX and RX own echoes
finally found and at last on Sat20 at 10:10 (very close to our Moonset)
worked OM/OK1DFC M/M #15 (strong QSB).
5760
MHz:
On Sep20 worked at 04:18 IK2RTI 559/569, 05:18 ES5PC O/O, 05:40 F2TU
569/569, 07:05
RW1AW 569/569 and at 07:39 W5LUA 569/559. On Sep21 at 05:27 worked OK1CA
549/579. No success with DL7YC – only T/M on Sep20 and repeated sked on
Sep21 resulted in nil/M.
10368
MHz:
On Sep21 at
07:15 WA6PY 559/579, 07:23 HB9BHU 569/569, 07:34 F5VKQ 559/569, 07:46
IQ4DF 579/579, 07:54 G4NNS 549/559, 07:57 W5LUA 559/569, 08:02 ES5PC
549/579, 08:14 SP7JSG 539/569, 08:20 F5JWF 559/579, 08:28 DF9QX 559/539
for #42, 08:57 F6CQK 549/519 for # 43, 09:18 WA7CJO 579/579 and at 11:10
LX1DB 569/569.
24048
MHz:
still no activity due to TX failure
Experience learned: If our HW on all five MW bands would work properly two Moon passes is not enough to satisfy most of stations interested.
Tonda OK1DAI
Hi Tonda and others at OK1KIR, Thank you very much for this nice QSO. It was the very first ES-OK qso on # 10 GHz! It was an easy one for me but probably not so easy for you. I had a very good copy from you all the time including the 529 report you sent at the end. A good 569 EME report. The signal had noticable spectrum spreading but less than a typical aurora signal. It was also raining at my QTH! OK1CA was very slightly weaker but still very good copy. O & 559 / O reports with him. I hope to work you also during the contest on both 5.7 & 10GHz. Please let me know if you want a sked during the contest or we can try random. I will probably change to 5.7 some time Saturday afternoon or Sunday depending on activity on 10G.
73! Viljo ES5PC / SM0WCM
První 24 GHz EME test u OK1KIR.
Během víkendu 8.- 9.3. jsme v našem EME deníku založili stránku pro osmé pásmo. Po sobotních úspěšných testech šumů a vlastních odrazů jsme očekávali, že se v neděli povede udělat nějaké spojení. Dopadlo to to takhle:
| Datum: | UTC: | CALL | Send | RCVD | Remarks: |
| 09.03.2008 | 11:03 | DF1OI | O | O | #1 |
| 09.03.2008 | 11:34 | DK7LJ | O | O | #2 |
| 09.03.2008 | 14:01 | LX1DB | 449 | 449 | #3 první OK-LX 24 GHz QSO |
| 09.03.2008 | 16:01 | W5LUA | 549 | 449 | #4 EM13QC 8567 km nový ODX |
| 09.03.2008 | 17:06 | VE4MA | O | O | #5 první OK-VE 24 GHz QSO |
Naše signály poslouchal ještě PA0EHG. Použili jsme toto zařízení 4,5 m parabola s lineární otočnou polarizací, DB6NT LNA s WG vstupem a asi 20 W výkonu z TWT v zářiči. V neděli byl šum slunce 14,8 dB a šum měsíce 1,9 dB. Přikládám fotky z ohniska antény s transvertorem pro 24 GHz.
Signály
byly různé od malých antén široké. Naše odrazy byly uzké - svazek
0,2°. Je vidět, že odrazy z celé kulové plochy 0,5° se na MW uplatňují.
Podle vyjádření DF1OI byl náš signál asi desetkrát užší než
jeho odrazy. Totéž pamatuji s VE3ONT na 10 GHz (43 m). Ti měli tón T9
ale díky směrování tam byli vždy jenom chvilku. Při protáčení
polarizace byla ostrá minima do nuly u všech stanic. U slabých široká
u W5LUA jenom asi 20°.Čili nesouhlasí to s tvrzením WA7CJO o
depolarizaci EME signálů. Sked s VE4MA byl dost pozdě a maximum jeho
signálu bylo asi o 30° pootočeno . U blízkých EU stanic pootáčení
nemělo vliv u QSO s W5LUA to bylo v půlce trasy, čili pootočení také
nebylo. Nic co by se neshodovalo s fyzikou. Škoda, že bylo tolik oblačnosti
to užíralo signály, viz známe grafy, kde voda má na 24 GHz ostré
maximum. Předtím, když bylo jasno jsme měli šum měsíce až 2,4 dB včera
jenom 1,9 dB.
Za OK1KIR Tonda.
Obrázky s pohledem na parabolu kde se v ohnisku nachází celé zařízení pro 24 GHz. Ozařovač je lineární s možností otáčení polarizace.
Screen SPECTRANU během spojení s DK7LJ
a vlastní odrazy 24 GHz
Thanks everyone for activity today....it was great! It seems like the WX was bad for most in Europe....signals seemed to vary up and down considerably during a transmission sequence on all EU stations. My moon noise was stable at the time. I was able to put my new preamp in this morning and the measured NF was 0.35 dB better almost the same as the increase in moon noise up to 2.1 dB again. I used to have 2.1 on 24192 and still need to put in a better downconverter ( which I have). I did not improve the TX power this month...maybe next. I did have problems here. My tracking program failed about 5 times and I had to restart and check pointing.....need to improve that system.....good after a while but not reliable enough. So here is what I worked today
W5LUA 449/449, DF1OI O/O nice signal and did see someone getting ready to tailend., DK7LJ M/ incomplete signal was weak and variable ( as all EU were), OK1KIR O/O Initial # 8 ...nice signal at times but variable and CW speed too fast !, LX1DB 559/559 great signal but variable. Sorry it took a while to find, you as I was looking down at the mutual Doppler frequency. Its getting very exciting to think of all the regular activity on 24 GHz and next month we can possibly have PA0EHG and IQ4DF joining us Best 73 & Thanks Again Barry VE4MA
OK1KIR v dubnové části European EME contestu 2008.
Na 2300 MHz jsme random dělali 12.4. v 09,45 ES5PC 549/559, 09,54 VK3NX 539/449, 13,43 G3LTF 569/569, 13,51 DL4MEA 559/559, 13,54 F2TU 569/569, 14,25 OZ4MM 569/559, 15,10 F5JWF , 15,23 SD3F 559/559, 15,36 HB9SV 579/569, 15,44 HB9Q 559/559, 16,21 G3LQR 549/559, 16,45 IK2RTI 549/569, 18,51 VE6TA 559/559, 19,33 W5LUA 569/569, 19,48 K2UYH 559/559, 20,53 WW2R 549/539, 21,30 WA6PY 559/559, 22,03 K7XQ 549/449 initial # 72. A13 .4.14,10 IW2FZR 559/559, 15,30 SP6GWN 549/519 initial # 73 a DXCC 27, 15,49 ON5RR O/O initial # 74 a DXCC 28. Slyšeli jsme OK1CA, PA0BAT and NA4N. Lokální QRM od WiFi vyloučilo aktivitu na 2424 MHz – S7 na FT790 trvale. Na 2304 a 2320 MHz při antěně otočené na východ (Praha) nelze bez dobrého filtru za LNA poslouchat.
Na 3400 MHz jsme random dělali 13.4. 18,49 DL4MEA O/549 initial # 8 a DXCC 6, 19,43 G3LTF 549/559, 20,54 OK1CA 549/559 a 21,22 W5LUA 559/549 . Ve skedu 23,51 VE6TA M/M initial # 9 a DXCC 7.