Tag Archives: 13 cm

OK0ER via Aircraft Scatter on 13 cm

October 22nd, 2018

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.

 

New 13 cm WebSDR in Eindhoven JO21RL

September 9th, 2018

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.

 

Microwave Contest June 2018

June 3rd, 2018

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.

WAE III Award on VHF/UHF/SHF Bands

May 8th, 2018

Recently, when getting the WAC Award for 23 cm, I outed myself, not really being an awards collector. The other day some HAMs proudly presented the first WAE awards for FT8 only contacts on Facebook. So the question was, how far would I come with VHF and up. Surprisingly I found QSLs for 42 WAE countries and 100 band points, when checking my shoe boxes and the  QSL systems in the Internet.

2018: WAE III, 100 of the 106 Band Points on 144 MHz to 2320 MHz

As electronic QSLs were involved, these had at least to be imported to the German “DARC Community Logbook”, short DCL, for the award application. It´s not my favourite, because there are problems to enter and store QSOs on the GHz bands. I asked the developer about and he mentioned, that it isn´t intended for. So I decided to interpret DCL as “Direct Current Log”. No wonder, there also was no way to delete the six embarassing shortwave QSLs, it had imported automatically.

 

New Beacon DB0WML on 13 cm

May 7th, 2018

The other day I noticed some cluster spots about a new beacon DB0WML in JO31MU on 2320.910 MHz. So I had a look for it today. Nothing via tropo, but nice reflections on airplanes.

At least I was bearing to an A380 in a distance of about 30 km at a height of 12 km with 33° elevation, to record this clip.

Also I was lucky to get a snapshot of this particular bird!

The beacon is runnung 1.5 W into a 10 dB slot antenna according the information in beaconspot.eu
The beacon is operated by DARC local chapter N40, keeper is Rudolf, DK8QU.

The screenshot shows DB0UX on 2320.900 MHz, DB0MJ on .904 and DB0WML on .910 in good Neighbourhood.

VHF/UHF/SHF Contest May 2018

May 6th, 2018

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.

OZ7IGY and friends

December 22nd, 2017

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.

 

Equipment Test on the ISS

September 27th, 2017

Tonight ESA astronaut Paolo Nespoli, IZ0JPA, aboard the International Space Station tested the amateur radio equipment in the Columbus Module.

Signal quality was better than expected, as it was a pass with quite low culmination at 48° elevation only. He could be heard well on 145.8 MHz FM as well.

Groundtrack of the ISS

The following pass at 20:44 UTC was more convenient and culminated at 62° elevation in the north. But Paolo could only be seen in the very first seconds, before he switched HamTV to blank transmission.

Windmill Scatter

August 30th, 2017

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.