As OK0EA was audible this morning on 23 and 13 cm I had a look for other, more distant beacons in OK. After noticing a very short and weak signal on 2320.9085 MHz, I monitored the frequency over a couple of hours and saw many doppler shifted traces, typical for aircraft scatter. Very soon I copied “…9DP…”, when a B777 crossed the path and was sure to see OK0ER in JN99DP in the waterfall diagram. At least 4 Airbuses A380 crossed the path one after the other, giving nice reflections.
OK0ER transmits 1.5 W into a slot antenna in 675 m asl. The distance is 722 km.
Rob, PE1ITR, told me about a planned WebSDR for 2.3 GHz in Eindhoven, when we met recently at the EME conference. He promised to send an email, as soon as it is up and running: websdr.pi6ehv.ampr.org:8901
Needless to say, the email arrived and I turned my dish to Eindhoven. Now I am delighted by my own signal. Amazing to see it increasing by reflections on an A380 passing the path, while two Dutchmen are talking a little lower in frequency.
As can be noticed now, the fears, many Microwavers would prefer to go to the HAM RADIO fair in Friedrichshafen, were overdone. It was a nice contest and in the 23 and 13 cm sections I worked more stations than in the last contests in May and March, as well as in all previous microwave contests I participated in June before. As can be seen in the maps, my honey pot is the east.
QSOs on 23 cm in Microwave Contest June 2018
The signal levels were very strong and I managed to work HA5KDQ on 23 cm in SSB over a distance of 830 km via Aircraft Scatter (ODX). To be honest: I am sure, we would have been faster in using CW 😉
QSOs on 13 cm in Microwave Contest June 2018
Working on 13 cm was big fun and ODX was HG7F over 817 km in a quick QSO in CW (as usual). When I went to bed at night, I already had 22 QSOs on this band with an average of 457 km per QSO.
Hannes, OE3JPC, was so kind, to send an audio record of my signal on 13 cm.
First steps have been done on 3 cm. But there is a lot of potential for improvements.
So it was not really a problem to quit two hours earlier to attend a barbecue with the family.
It´s one of the rare moments in the life of a Radio Amateur, when his shack is cleared up. Beyond believe, everything was up and running 2 hours (!) before contest time. Being a kind of bewildered, I sorted the stuff on my desk. The amazing result can be admired in the photo I took hereafter.
Starting with a nice QSO with M1CRO in SSB on 23 cm, I tried the new 3 cm Equipment, mounted on the VHF/UHF pole. 1 W into a 50 cm dish should be enough to collect first experiences. Two QSOs over 100 km were entered to the log. Quite nice, but further tests showed, that the topography is not ideal to cover larger distances, without the help of e.g. tropo, aircraft or rain scatter.
QSOs on 23 cm in blue, on 13 cm in red
Then I had my focus on 1296 and 2320 MHz, as usual. At least 58 QSOs, 36 squares and 14 DXCCs on 23 cm and 32 QSOs, 25 squares and 10 DXCCs on 13 cm have been logged. ODX, as last year, was HG7F in JN97KR over 817 km on both bands. Having an easy exchange on 1296 MHz, it took us nearly 20 minutes of hard work to puzzle a QSO on 13 cm as well. I remeber, last year it was vice versa.
Tonight I monitored OZ7IGY on 2,320.930 MHz via aircraft scatter. It was nice to see other beacons appearing shortly in the waterfall diagram.
OZ7IGY and friends in time lapse
From left to right:
2.320.900: DB0UX, JN48FX, 105 km, tropo
2,320.910: DB0XY, JN51EU, 263 km, aircraft scatter
2.320.920: DB0VC, JN54IF, 509 km, aircraft scatter
2,320.930: OZ7IGY, JN55WM, 670 km, aircraft scatter
The dish was bearing 20° to OZ7IGY. The -3 dB beamwidth is just 3.2° on 13 cm.
As the weather forecast promised heavy thunderstorms for today, I was looking out for scatter points on 13 cm. Pointing to eastern France, I found a heavily scattered signal of DB0UX in JN48FX in 204°.
But the sound was quite strange and rhythmic. When taking a look out of the window, I saw the dish pointing at two windmills in 1 km distance.
This kind of scatter is not very helpful, but a nice experience anyway.
Another ARISS contact with an YOTA event in England was scheduled. HAMTV should be operated by Paolo Nespoli, IZ0JPA. As some nice video sequences could be received on 13 cm, nothing was heard on the 2 m downlink on 145.800 MHz in FM.
After the unexpected good result in March on 13 cm, I had a special focus on this band in May contest. Last year I marked my new record in the number of stations worked on 23 cm, this year I improved the new record from March in worked stations on 13 cm. Particularly in the last hour I had the ambition to log at least 40 Stations. So I had QSO #40 in the last 5 minutes with Detlef, DJ3AK, in JO52GJ, 322 km, using aircraft reflections on planes just 50 km from my location, elevating the dish up to 10°: Power Aircraft Scatter 😉
QSOs on 13 cm
With QSOs to Poland, Hungary and Belgium three new countries could be added to the 13 cm list. HG7F (817 km) is my new aircraft scatter ODX. Also some new grid squares could be logged.
And again: After the contest is before the contest! A lot of ideas are in my mind, what has to be improved for the next competitions!
Sometimes you hear words that hurt. Especially if they are true: Some years ago I tried 13 cm EME with Dan, HB9Q, and couldn´t copy anything of him. His comment after the test: “There is no way, not to hear me!” This is frustrating.
So I forgot Moon Bounce on this band and had fun with other activities, mainly on 23 cm. But the over 30 year old equipment caused more and more problems. So I started collecting parts and modules for a new transverter system covering 23 and 13 cm. It had been finished for the last VHF/UHF/SHF contest in March and was tested with good results. In the end of March I tried EME again after 2 years of absence. On 23 cm it worked fairly, but on 13 cm the drift was a serious problem. In a test with Alex, ZS6EME, I could decode his strong Signal, but not vice versa. So I added 10 MHz Double Oven Controlled Oscillators as references to stabilize the transverters.
PY2BS in WSJT-X Wide Graph
Today I tried with Bruce, PY2BS, and heard him strong in the speaker during his prior test with Toshio, JA6AHB: 1131 -6 2.5 2305 #* JA6AHB PY2BS GG66
At this time his elevation was -1.7° and the moon still under the horizon. After the moon set in Japan, we started:
As he switched his RX from 2304.070 MHz to my TX frequency 2320.070 MHz at about 12:14, we completed very fast. I am very pleased now with my first initial on 13 cm, a new grid square, a new ODX, a new DXCC and a new continent! After setting up a new Initials List for 2320 MHz and writing this blog entry, I enjoy my “Radio Operators High”!