Posts by DD1US

Hallo Thorsten,

hm, ich bin nicht sicher ob diese grauen Abflussrohre die ich verwendet wirklich PP oder vielleicht doch PVC sind !?

Es hält jedenfalls sehr gut, die Teile sind wie kalt verschweisst ...

Viele Grüße

Matthias

http://www.dd1us.de

Ich verwende für die grauen Abwasserrohre:

Tangit PVC-U Kleber

(Spezial Klebstoff für zugfeste Rohrverbindungen bei Druck- und Abwasserleitungen)

Viele Grüße

Matthias

http://www.dd1us.de

Hallo,

ich verwende PP (das graue Abwasserrohr) für das Wetterschutzgehäuse meiner diversen Feeds. Es lässt sich mit Tangit sehr einfach und dauerhaft kleben. Für die Front verwende ich grundsätzlich Teflonfolie. Beschreibungen sind auf meiner Homepage http://www.dd1us.de zu finden.
Viele Grüße

Matthias DD1US

yes indeed

Hallo Martin,

meintest Du wirklich 12dB oder eher 1.2dB ?

Mit 12dB ist erstaunlich dass Du überhaupt noch etwas hörst.

Ausserdem hoffe ich dass Du die beiden Antennen nicht über einen Combiner sondern eine Weiche zusammen geschaltet hast !?

Viele Grüße

Matthias

http://www.dd1us.de

Hi Kurt,

your device must be defective.

Here are some measurements I did on such a coupler: Characterization of Chinese directional coupler

Kind regards

Matthias

http://www.dd1us.de

Dear all,

I also finished building an amplifier based on the Andrews module with the MRF21045.

Special thanks to DK5DN for publsihing his modifications which worked perfectly well for me.

You can find my setup and the results here: Modification of Andrew AP module with MRF21045 for 2.4 GHz

Kind regards

Matthias

http://www.dd1us.de

Hi,

I also finished building an amplifier based on the Andrews module with the MRF21045.

Special thanks to DK5Dn for publsihing his modifications which worked perfectly well for me.

You can find my setup and the results here: Modification of Andrew AP module with MRF21045 for 2.4 GHz

Kind regards

Matthias

http://www.dd1us.de

Hi,

thank you for your various inputs.

I have also finished building a driver amplifier based on the MHL-21336.

You can find the results here: 2.4 GHz 1.3W medium power amplifier MHL21336

Kind regards

Matthias

http://www.dd1us.de

Dear all,

I just added also a description with measurement results of a small medium amplifier based on the MHL21336 module.

You can find it here: 2.4GHz driver amplifier based on MHL21336 module

Kind regards

Matthias

http://www.dd1us.de

Dear all,

I have also built one of the amplifiers with the MHT1008N based on the design by DJ0ABR and DC1RJJ.

Enclosed you can find my measurement results: 2.4GHz medium power amplifier MHT1008N

Thank you very much to Arved M0KDS for providing the populated PCB.

Kind regards

Matthias

http://www.dd1us.de

Hallo DL3DCW,

da hast Du ein ehr schönes Setup zusammen gestellt, der Shack sieht aber unnatürlich aufgeräumt aus

Viele Grüße

Matthias

http://www.dd1us.de

Hello Thomas,

the full presentation as a pdf is available for download on my website www.dd1us.de

Kind regards

Matthias

I told him in voice, not sure he listened

Kind regards

Matthias

http://www.dd1us.de

Luca just started his contact with the italian school

you can receive it on 145.800 MHz

Regards

Matthias

Hi Achim,

yes indeed ... 500 Emails in 3 weeks in my ARISS folder LOL

But it was really fun seeing the ham radio team from 3 different clubs in Freiburg, Emmendingen and Heilbronn working together so nicely and also the students helped during the setup of the station. We managed to get the antennas and the station up and running in about 6 hours. At the previous contacts we needed up to 10 hours ...

The rewards is always to see the big smile in the faces of the students after such a successful event ...

We hope to be able to attract some of them for the scheduled ham radio class starting in November.

Kind regards

Matthias

http://www.dd1us.de

Thank you Peter and Thomas for posting the information about the contact.

iIt was a interesting week as we had to shift the date/time due to the problems in the ISS which was demanding an unscheduled EVA.

Originally the contact was scheduled for today, Friday.

Fortunately we (the team was comprised of Ham radio friends from DARC P05, A16 and A05) had built up the station already on Tuesday and did all final testing including a final dry run with the students on Wednesday afternoon.

On Wendnesday evening I got the message that the contact could not happen on Friday due to the EVA.

Saturday was also blocked and thus the only chance was to pull in the schedule to Thursday. Within 15 minutes after talking with my Ham Radio team and the school teacher I could confirm that we can accomodate Thurday and thus we saved the contact ...

Many thanks to the ARISS team for helping us to get that new time slot !

The QSO worked out very well and we got 17 questions answered by Luca.

You can find an audio recording, some pics and a presentation on my website. I will add more information shortly.

Kind regards

Matthias

http://www.dd1us.de

I did not have much time but had a quick check: MER decreased here from 10 to 6.4dB while the sun was behind QO-100.

Kind regards

Matthias

http://www.dd1us.de

Sorry, that was a typo: I wanted to write:

I am getting max. 170W at 2320 MHz and max. 70 Watts at 2400 MHz

Mea culpa !

Kind regards

matthias

http://www.dd1us.de

Hi,

I agree.

I am getting 170W out of this PA at 2320 MHz but 170W at 2400 MHz. Removing the circulator did not improve it much, only approx. 0.2dB.

Kind regards

Matthias

http://www.dd1us.de