Tracking satellites

September 29th 2020

SMOG-P entered the Earth’s atmosphere and completed its mission.


September 23rd 2020

Satellite evolution graphs for today:

It will be interesting to check, wheather NORAD will be able to track PQ satellites while their orbits change quickly.


September 17th 2020

According to notes of HA7GG, the movement of orbiting satellites in the height of the F regions of the ionosphere are influenced by the drag of the ionized media.

One example is the number of oxygen atoms (See the publication of Gábor Géczy HA7GG) and the changing density of ions determined by the 304-angstrom radiation of the Sun.

During the week, preceding 13th September 2020 Peter HA5CQA has produced a graph that shows the accelerating evolution of ATL-1 and SMOG-P satellites. Expectedly, the tendency of this leads to the burning of the satellites.

Let's take a look at the achievement of the first 30 tracking stations among all the 87, HA6NAB's at first, who has uploaded more than 300000 data packets of ATL-1 and SMOG-P. All the other tracking stations have made a huge sacrifice for the sake of collecting so many data, even during the first nine months of the operation.

There are nine stations among the first ten. (One of them is double.) It's venerable to recognize all the six fixed testing antenna that made by HG5OK are among the first thirty, even the 5/8 lambda vertical which was able to collect almost 15000 data packets till this date. Honourable that HG1TTS and HA1GE have fought a lot to keep the 6th and 7th place. They are followed by Tamás HA71970 who has been helping others with his advice and notes while collecting so many data. HA5CD and Cellar have achieved fast advance despite their relatively late start of tracking. For whom we are all grateful, are the authors of the smogcli2 software who have been advancing in collecting data among us.

All tracking stations worth an acknowledgement, since they were all fought for building a useable tracking station -although they had the chance of tracking for a short time.


August 6th 2020

As you may know and noted, we have observed some function anomalies in the operation of SMOG-P during the past months (unexpected battery discharge, reboots, system toggles, etc.). We were not able to explain what had been going on up there but despite the abnormalities, the satellite has been working perfectly and accomplished its mission.

After a several week-long investigation, I succeeded to point out what is the source of the problem and what causes the experienced anomalies.

I have written an article which summarizes the whole mission, about the causes of the anomalies and the probable states that can be observed in the future.

The article can be found on our server and its abstracts will appear in the press shortly.

I am herewith thank you for all your help! Many thanks to the satellite constructor team, to the plentiful amateur radio tracking stations, the upload of the countless number of data packets from which the conclusion has arisen, giving a complete picture.

I wish you a nice day today on the occasion of the launch of SMOG-P and ATL-1 satellites, eight months ago.


Géczy Gábor HA7GG


July 29th 2020

Amateur Radio Space Race

You can see the list of the satellite tracking stations that shows those who have uploaded 50000 or more data packets of SMOG-P and ATL-1 satellites to the server of BME.

These stations may be grateful for the exceptionally successful smogcli2 software which has made it possible for uploading so many data packets.

The last four stations have been using immobile antennas. HG5OK has made four of them. The second antenna at HA6NN is an LPDA.

Exceptionally great appreciations are due to the line of those tracking stations that achieved more than 100000 uploaded packets and of course HA6NAB and OM3BC who have exceeded the 200000 packets.

There are alltogether 87 tracking stations on the list with the authors of smogcli2 software among them.


July 25th 2020

YO6UO's worm-screw antenna elevation for tracking satellites:

Background information:

July 12th 2020

Diligent tracking stations are struggling to save, decode and upload to database as much data packets as possible during each pass of BME-satellites.
Those who were able to cross magic barriers are HA6NAB 250000, OM3BC 200000 and HG6OK who has reached the quantity of 50000 uploaded data packet using his turnstile antenna.
OM3BC had had to identify a jamming TV provider and had to take official steps to have that TV channel stopped on a certain frequency.
He has designed his low noise amplifier, and he has been testing several different antennas. You can see the original PCB panel that he originally made for another project.

The full documentation of that LNA can be found at

June 20th 2020

I saw this line on leaderboard:

HG5OK_QFH 370 50085

It's an outstanding achievement: to receive 50000 data packets by a fixed antenna. A direct hit was the application of a QFH antenna since the leading satellite tracking stations on the top of the leaderboard were able to decode more than 100000 data packets by using much more complicated systems.

A new design was born in Pista's workshop during the beginning of June, so others are also using this well-working antenna for tracking satellites constructed at Budapest Technical University.


The secret of successful reception is a low noise amplifier. The LNA that was designed by HA5CQA is being made in series in Pista's laboratory and they are helping reception at several tracking stations.


June 18th 2020

HA5WH's article created substantial international interest among scientific circles. The appreciative letters arrive in a row.

A leader of an ESA working group leader writes:

"Congratulations! You have to be very proud of the excellent work of your team and the results obtained. Also, I appreciate your efforts to communicate the results and increase awareness. Important part sometimes was forgotten."

May 2nd 2020

As early as December 2019, some of us realized that it is possible to receive BME satellites successfully without program-controlled Az / El antennas.

HG5OK was the first to design a QFH antenna that is expected to provide signals of sufficient power from SMOG-P and ATL-1 satellites travelling on higher orbits to record files suitable for decoding to its simple receiver. This antenna is designed for RHCP polarization.

Making these may seem a bit sloppy, so the next experiment was a turnstile antenna, which is a V-shaped cross dipole with their associated reflectors.

The image to the right shows an assembled antenna for LHCP polarization with the LNA.

As a result of the good reception results, a classic GP antenna with an ordinary quarter-wave radiator was born out of a bold idea.

After this, it has been suggested that when using plane-polarized antennas, it is more advantageous to receive the horizontal or vertical plane, respectively. It proved useful to compare the signals taken in the two planes. That is why the fourth antenna with two cross dipoles was made, the received signals of which are processed by two separate units.

The QFH, the two turnstiles with different polarizations, the GP and the cross dipole, make up the antenna farm.

A separately measured band-pass LNA for each antenna, the additional units are shown in the drawing above. The GP LNA is made by Kuhne.

HG5OK's house with all the antennas:

The effectiveness of simple antennas is most convincingly demonstrated by the reception results and by the the leaderboard this morning .


One of the most important parts of the successful application is a software named smogcli2. It can be found at


2020. április 19.

A MRASZ kezdeményezte speciális hívójelek használatát. Lásd:

HA6NM heti váltásban különböző hívójelekkel fog dolgozni a QO-100 geostacionárius műholdon. A hívójeleknek a végződései (suffix) összeolvasva a STAY AT HOME felszólítást népszerűsítik.
Aki begyűjti a szükséges összeköttetéseket egy oklevelet tölthet le.

2020. április 11.

Nem volt unlis! A QSL-lap is megérkezett.

2020. április 9.


Nálam egy valós QSO volt a QO-100-on.
OP: E70T Vlado.


2020. március 29.

Egyre több állomás található a QO-100 geostacionárius műholdon. Talán a sok otthonülő rádiós aktívabb, vagy egyre gyorsabban nő a felhasználók száma.

HA6NM riportja:

A legfrissebb logkivonat:

2020. március 26.

A BME-műholdak kitartóan kerülgetik a Földet, a követő állomások pedig igencsak változatos felszereltséggel szorgalmasan gyűjtik a dekódolt, értékes adatokat.

A pole position-ból indult HA6NAB magabiztosan tartja az első helyét és a mai napot már


csomaggal kezdte a reggeli műhold-áthaladások után. A második és harmadik helyezett állomások eddig váltogatták a helyüket de lassan győzni látszik a 4,5 m átmérőjű monstrum. Emil a operátora sikeresen megküzdött a nagy parabola forgatójának a beállításával, így már a fejfeletti átvonulások követése nem okoz gondot.

A negyedik helyet a MASAT-1 követése során is HA3JK szerezte meg. Ő lehet az "örök" negyedik. A bmegnd bokros teendői mellett csomagokat is gyűjt, őket egy családi vállalkozás (Apa és fia csak fordított sorrendben.) követi a 7. és a 8. helyen. HA71790, aki a sportszerűségi díjra érdemes, hiszen Users' Guide-ot írt és többeket -de leginkább HA3JK-t tanította meg arra, hogyan használja a szoftvereket. Van aki tanít, van aki tanul az egyetemen, van akiről nem tudjuk, hogy kicsoda.

A külföldi követőállomások listáját SV3CIX vezeti. Ő az egyetlen, aki helix antennát használ.

Gyors előrehaladást ért el HA2SK, aki OM3BC és HA3JK mellett veterán műholdkövető, a MASAT-1 repülése alatt is szorgalmasan gyűjtötte az adatokat.

Nagy figyelmet érdemelnek HA5OK omnidirectional antenna kísérletei. Egyszerű antennákkal -pl. QFH, turnstile és GP- is gyors csomagszám növekedést ért el.

HA7018SWL az erkély-antennájával rövid idő alatt előkelő helyezést szerzett. A japánok sokáig nem voltak eléggé tájékozottak a használható szoftvereket illetően. A smogcli2 egyik alkotója már talált egy japán kapcsolatot, aki az új és hatékony szoftvert az ő nyelvükön is népszerűsíti. JA0CAW a 20. helyen áll, ám tudjuk ő volt az aki először meghallotta a 2019. december 6-án felbocsátott SMOG-P és a ATL-1 adását.

A további 49 helyen még mintegy 20 állomás igyekszik a szerényebb eszközeivel további adatcsomagokat gyűjteni. Figyelemre méltó ws134 és mmaroti kitartó haladása -amellett, hogy bennük tiszteljük a smogcli2 megalkotóit, akik rengeteg időt és tudást invesztáltak a smogcli2 szoftver fejlesztésébe.

HG5OK rengeteg munkával összeállított egy táblázatot, amiben a leaderboard első 40 állomásának az adatait gyűjtötte össze.