September 17th 2011 | |
JT4G test on 24 GHz. | |
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Signal was very weak with terribly wide spread, no decode in JT4G test with Brian on 24 GHz today morning. Weak signals were visible on screen on both sides, but no decode at all.
These are the condition when the sked is not worth to plan: – Apogee in summertime is the worst choice possible - Nighttime in summertime is the bad choice as well. High atmosphere humidity obvious in summertime brings too high additional attenuation along the slant path, esp. at low Moon’s elevation. – High spread impacts seriously weak signal readability Some more information and screen shot could be find at Signal records - 24 GHz - Technical Issues section. | |
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September 16th 2011 | |
7P8EME QRV on 23 cm. | |
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We received an envelop with AWARDs from European EME contest and DUBUS 3/2011 with contest results today morning. Awards are scanned in Achievements - Awards section. Tonda was successful in JT65 QSO with 7P8HP as new DXCC on 23 cm at the evening. Rotatable linear feed (EIA) was used, the strongest signal was on vertical polarization. Then Tonda swap to circular septum feed and finish CW and JT65 QSOs with Emil OK1CS. | |
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September 11th 2011 | |
New WEB structure | |
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Today the WEB were swapped to new structure. New menu Signal Records contains screen shots, signal records and other articles. New structure also allows to switch to Czech version, this is available at right bottom corner of each screen.
I would like to apology to our Czech colleagues, that Czech version did not come together with English one some year ago. Even now not all original text are not translated yet. We will continue to translate them soon. Please inform us if you find any broken link or missing page. Last but not least, I would like to thank Petr OK1AXH who spent enormous time to create this web. | |
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August 30th 2011 | |
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| Again QRV, today on 24 GHz. New initial with DL7YC as #9. It was cloudy, high humidity, Sun noise measured on SDR-14 was 14 dB ( SF 100), Moon noise 1.7 dB, G/CS 3.2 dB. | |
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August 29th 2011 | |
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| Tonda and Vlada were QRV on 6 cm after a while. We have skeds with S59DCD and 9A5AA. Both skeds were succesful. Two new DXCC on 6 cm, that's great. | |
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July 30th 2011 | |
6 cm Activity weekend | |
| Tonda and Vlada were QRV during the weekend on 6 cm. They made 17 QSO including two new initials, SV1BTR as #49 and G3LQR as #50. We also heard 9A5AA and S57NML, but no copy on other side. Sun 16,2 dB (SF 115); Moon 1,25 dB; G/CS 4,45 dB, all measured on SDR-14. | |
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July 2nd 2011 | |
6 cm Activity weekend | |
| Tonda and Vlada were QRV on 6 cm for a while only. They made three QSOs, two of them were initials, SK6OSO and PA7JB as #48. | |
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June 9th 2011 | |
24 GHz sked. | |
| On Thu, June 9 worked at 17:29 PA0EHG O/O #8 and the 1st PA - OK 24 GHz QSO.Hans used 3 m dish and 10 W at feeder. | |
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June 6th 2011 | |
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| Finally Tonda worked Michael on JT65B LY/DL1YMK -25/-20 on 70 cm. | |
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June 4th 2011 | |
EU EME contest on 1296 MHz | |
| We worked 79 CW QSOs (including 11 initial) in the contest during the weekend. In additional we heard G3LQR, IK3COJ, JA1WQF, LX1DB and PA7JB. We worked out of contest on JT65C on 4.6. LU1CGB -27/-18 as JT #90 and on 5.6. PE1HNG. | |
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June 2nd 2011 | |
LY expedition on 13 cm. | |
| Tonda was on 13 cm and worked LY/DL1YMK and WW2R. Later on during test of new SSPA he also operates on JT65 G4BAO as JT# 4, LY/DL1YMK -18/O as #5, PA3DZL -20/-15 as #6 and W5LUA -10/-10 as #7. We heard WW2R -14m but only QRZ. | |
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May 29th 2011 | |
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| Tonda was QRV on 13 cm and worked Michael LY/DL1YMK, SM4IVE and SM3BYA, three new initials and new DXCC. | |
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May 28th 2011 | |
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| Tonda was QRV on 23 cm and worked LY/DL1YMK as #310 and new DXCC and HB9BBD. | |
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May 22nd 2011 | |
South America on 9 cm. | |
| On 9 cm on Sun, May 22 worked at 01:24 PY1KK 559/559 #36, GG field and the 1st PY - OK 9 cm QSO.Bruce used 4 m dish and 200 W at feeder. His signal was 15 – 20 dB over noise here. | |
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May 14th 2011 | |
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| We were shortly QRV on 23 cm, worked JT65C ZS6WAB as JT #88 and OK1YK as JT #89. Nil in the sked with RA0ACM. Later CW QSO with Mirek OK1YK #309. | |
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May 13th 2011 | |
24 GHz test | |
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We widened the dish beam-width 1.8-times when under-illuminating the dish by the new feed (equivalent to a dish ≈ 2.5m with f/D≈0.7). Measured Sun 14.6 dB (SF 92); G/CS 3.5 dB and Moon 2.4 dB (later ≈2.0dB when clouds). Worked LX1DB O/O; DF1OI O/O; G4NNS O/O and at F2CT M/O as #7 and 1st F-OK 24 GHz QSO. Improvement of RX performance by widening the beam was verified in opposite TX way by Willi, LX1DB, who mentioned almost double spread of our signal compared with previous narrow beam. The same effect was observed on our own echoes. We have had own echoes till elevation of 5.5 deg., when echoes were finally swallowed by humid atmosphere, though the Moon was still visible. Check attached document describing the reason for widening of dish beam EME_on_24_GHz_big_dish_vs_small_dish.pdf | |
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May 8th 2011 | |
European EME 13 cm contest - Sunday | |
| Worked another 4 station in contest , 40 stations in contest in total. | |
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May 7th 2011 | |
European EME 13 cm contest - Saturday | |
| Worked 36 stations including new initials: S50C as #106; IK3GHY as #107 and N8UO as #108. Detail in LOGs & Statistics section. | |
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May 6th 2011 | |
European EME 13 cm contest preparation | |
| We worked Viljo, ES5PC when testing equipment for the contest. | |
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May 4th 2011 | |
24 GHz test with G4NNS. | |
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24 GHz test with G4NNS. Brian signal as quite weak at the beginning, later was stronger. Very nice QSO, thanks. We repeated QSO with Brian, then at 14:27 heard W5LUA O but lost his signal. The day was closed with QSO with DF0OI. Brian signal on SDR 14 waterfall when became stronger
More figures at Signal Records 24 GHz. | |
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