Posts by DJ7WL

    Die Montage direkt auf der Platine fand ich nicht zielführend. Will ja sehen ob und wann GPS Synchronisation

    vorhanden ist.Habe schnell gemerkt. trotz Synchronisation, dass die Frequenz nicht stabil war. Der TCXO kann

    keinen Luftzug ab, deshalb muss das Gehäuse dicht sein, dann nützt mir das Display im Gerät aber nichts.

    Normalerweise hätte ich es in der Frontplatte des Gehäuses angebracht, da war aber kein Platz mehr, deshalb

    habe ich es auf einer Platine außen montiert.

    Weiter oben habe ich eine Auszug der Schaltzeichnung mit der Pin Leiste JP6 eingefügt. Mit einem Messgerät

    kann man leicht feststellen wo die VCC anliegt und wo GND. Dann ergibt sich die Reihenfolge von alleine.

    73 Joachim

    Hi Michael, thank you for your comment.

    from my side i have the following system. I have registert one PC only for the transfer of ADIF files to eQSL as well as to LOTW.

    This is the PC i use also for normal email, calculations etc.

    At the shortwave station i have a second PC where i mostly use digital modes with wsjt-x. This program produce ADIF files in automatic mode and transport it also automatic to PC no.1. For QO-100 QSOs i have PC no. 3 where i produce ADIF files per hand by XMLog.

    After that i send this files manualy also to PC 1. One time per day i send all collected files to eQSL and LOTW. This working fine for me over longer time.

    With the shortwave files the confirmations rate is quit high about 90%, but confirmations for the QO-100 QSOs are poor. Until now about 25%. Therefore i try to bring this to a higher level :-).

    I had several connections via QO-100 and i confirm all QSOs from the beginning with eQSL as well as LOTW. But the return confirmation is very poor. If i talk with the QSO partners they tell me it is so difficulty to get it working. Before i start with eQSL and LOTW i read this thread from the beginning and learn a lot. I made the decision to start with XMLog and ADIF Master and install both at my PC. Before you start with XMlog you must fill the Stations Info with your datas.

    Via options and logfields you must activate the satmode. After that you may produce a ADIF file what will work with eQSL as well as LOTW. In eQSL it will be displayed realy as sat QSO, with the same ADIF file uploaded to LOTW it will be show only as 13 CM QSO.

    LOTW has no fields for the satmode. If somebody like to try it i will send a ADIF file as example and with the ADIF Master you are able to insert your datas to the single fields, After that you may send this ADIF files to eQSL and LOTW. Also you may import the ADIF file to XMLog.

    Following you may see how the logs are presented:

    e QSL log

    LOTW log

    This picture will show my adif example file:

    Maby this will help a little bit to see more confirmations about the eQSL and LOTW logs.


    Hello Maurizio,

    between the DX Patrol PA and the transceiver TR 9500 it will be neccessary to solve a problem.

    If you key the tranceiver it will deliver a + 8 Volt via a output socket at the backside of the equipment.

    The PA on the outher hand, if you key it, needs the ptt voltages to ground.

    So i made a little circut with a transistor and small relay to overcome this problem. Also with this

    circut both equipments are galvanically isolated.

    73 Joachim


    i use the TR 9500 now together with the DX Patrol converter as well the PA. The TR 9500 is a quit old Tranceiver but general i produce a good signal. The DX Patrol PA has 12 W output due the documentation but i see only 10 W at my meter. Have 5 m H155 cable between the Pa and the dish. So this means only 5 W at the 85 CM Antenna. If you like more information we may discus it here, The main problem with this tranceiver there is no CAT interface, realy comfortable working is not possible. The Transmitter produce 10 W output. I use the antenna output and use 6dB damping for the input to the DX Patrol converter this delivers 2 W what is ok there.

    73 Joachim


    Sieht gut aus deine portable Antenne. Was ist das für eine Abdeckung für das Bamatech Feed? Ist das Bamatech Feed die Version mit dem LNB gleich dabei? Bei mir ist das auch die Version mit LNB. Da das Senden mit diesem Feed normal aussieht könnte mein Problem auch an dem LNB selbst liegen. Wenn ich es im Triax Spiegel erprobt habe werde ich die Werte hier ablegen.

    Hier mal einige Bilder einer portable Anlage für einen geostationären Satellten welche ich vor ca. 30 Jahren für den Präsidenten der Vereinigten Arabischen Emirate VAR in Abu Dhabi in Betrieb genommen habe.

    PA und LNA waren direkt an der Rückseite der Antenne angebracht. Uplink 1,6 GHz Downlink 1,5 GHz System Inmarsat

    Die Antennen sind aus einem Carbon Material gefertigt. Die vier Teile sind im Deckel verstaut und werden zum Betrieb durch eine Klickvorrichtung zusammen gehalten.

    Programmiert habe ich die Geräte dann unter freiem Himmel, ID Nr. etc. Auch das Deutsche Auswärtige Amt hat diese Geräte auf den Botschaften eingesetzt. Im Amsat Journal 1/2019 habe ich dazu etwas geschrieben.


    i´m interested in a screenshot from your sdr console as well a picture from the feed in your antenna. I have ordered and just received a Triax dish 85 cm. Will try it with this dish, i believe my other dish don´t allow to come rigth into the focuspoint. Maby still my LNB is bad, on the other hand the Bamatech produce a quite good transmit signal.


    In the meantime my little powermeter works fine, together with a chinese direction coupler. Little problem with installation of the USB driver. But i found a solution.

    73 Joachim

    Like to use for receive and transmit a offset TV antenna. Read several articles about a feed for receiving and transmitting via this single dish. Read carefully the description from Bamatech, ( #28 above) I made the decision to use the Bamatech Duoband feed LNB. Install the Duoband feed to the dish and carried out the first measurement.

    The result has been frustrating to me, realy poor signals. After that i have to learn, a lense will be neccessary for a better result. Ok, i order a Vento EXL - T Rocket Twin LNB remove the lense, but this lense don´t fitt. Ordered the original lense from Bamatech and this fitt mechanical perfect to the feed. Made a first test with this lense.

    Looks better, but not realy good. Connect the transmit cable and carry out first QSOs with this combination. The received signals don´t come out of the noiselevel and i have not been happy with the result. On the other hand my transmit signal with this duofeed is quit ok.

    So for some QSOs i use the websdr from Goonhilly for it. Finally a install again the GM 201 LNB and compare the result with the Bamatech feed.

    This signal level is quit ok and i´m happy with that but for transmitting i have to find out a solution. One possibility is to use a second dish and fitt for transmitting the Duofeed there. I study more lecture about the problem anf found a solution here: this shows what will be neccessary to fitt the Duo feed in the correct position for a offset dish.

    You must cut the feedarm and contruct a new feedholder, which is movable in Z and X axis to get maximal signalstrenght.

    So if you like to use the Bamatech Duoband Feed for a offset dish you must carefully study this and other articles. Also in the Bamatech description (see #28) there should be a footnote placed about this problems. Allready in (#32) i ask who has fitt a Bamatech Duofeed in the normal feed of a offset dish and is 100% happy with it. Together with the lense Bamatech send me the followig drawing.

    Also for this picture there should be a footnote

    This lense looks different to the lense i received from Bamatech

    What i will do further to overcome my problem? From the AO 40 time i still have a Winkler parabol dish 60 CM.

    Will fit the Duofeed there and find out how is the result in this configuration. In a dish like this, it is only neccessary to move the direction of the feed in one level to find the maximum signal strenght. The results i will later present here.

    73 Joachim

    I have also ordered this RF Powermeter. Ask the supplier to send me a link for the neccessary software. He send me a link and i come to the download page. But here i must register via Baidu, but all only in Chinese language. Also Google ouer friend don´t help. So i ask Ed PY2RN and he send me the software via Mail. But also he send me a link for a supplier in europe. On this page you will find the software for the RF powermeter as well as the USB drivers and a DLL file. Also you will find the RF power 8000 meter manual in english language there and not in Chinese, as usual.. So have a look to this Page and download the software zip file.

    The link to this page:…ter/rf-power8000-926.html     

    73 Joachim


    hallo Robert, Hast du den MK2 in Betrieb und evtl. auch die 12 W Endstufe dazu? Da der Amsat DL Upconverter ja derzeit nicht lieferbar ist habe ich jetzt den MK2 Upconverter und die dazu passende 12 Endstufe bestellt. Soll angeblich umgehend ausgeliefert werden. Wird dann alles in passende Gehäuse eingebaut und danach erprobt. Hat jemand schon diese beiden Baugruppen im Einsatz?

    vy 73 Joachim