Posts by dl9sad

I ordered at DigiKey at 2021-04-03 and got Rev-C(/D) today ...

73, Martin

Hello all Sat-Oldtimers,

in cleaning up my shack, I found this paper.

Wouldn't it be nice, to create something similar for QO-100 ?

73, Martin DL9SAD

I can confirm this...

73, Martin DL9SAD

I did this -- but no change ....

73s, stay healthy, Martin DL9SAD

Were ist this case available ?

73, Martin DL9SAD

Is there guide, how to establish a TS-Transfer by UDP to VLC ?

I have similar problems. It is decoding, but it hangs every 2 secs even with good MER (8.7). I installed the LAV-Drivers, but no change ... Audio works fine ...

The Scan&Tioune Software using VLC works with no problems.

What to do ?

I baught a Filter from Joerg Delvos DJ4ZZ (jdelektronik.de) ...

I worked the whole day today to get my 100 QO-100 QSOs fully accepted in LOTW. And nevertheless only 5 countries are confirmed upto now.

I sent the following ADIF-Tags:

<BAND:4>13cm

<FREQ:9>2400.0000

<PROP_MODE:3>SAT

<SAT_NAME:6>QO-100

<FREQ_RX:10>10489.0000

<SAT_MODE:2>SX

and optional for the QSL-Cards:

<NOTES:19>SAT: QO-100 MODE SX

It was not easy to get my logging program (HAM-Office) to bring all these tags in the ADIF export file.

Fortunally, LOTW allows to override already logged QSOs with new data.

Still to do: Update the QSOs in DCL, HRDlog and eQSL.

Only 5 DXCC entities, why ? Do QO-100-dxers not use LOTW, or do they send incomplete data to LOTW ?

73, Martin DL9SAD

I own a GTMEDIA V-73-HD type of the receiver. It has different menus.

I use the a modified LNB with 24 MHz injection. This results in 9360 MHz ZF. But this can not be selected in my device.

So, when I select 9750 this would result in a frequency of 10882 MHz for QO-100.

Are my thoughts going in the right direction ?

Yes, I tested it , and it works ...

I used the following transponder on BADR 4 for a first turning of the dish:

It seems, that this is a beam, that can be seen in Europe.

Hello,

an Update to my QO-100-Station:

2 Offset-Dishes : 100cm with Bama-Feed and Kuhne-Down-Konverter, 80cm with modified OPTICUM-LNB

NB-RX:
1. Kuhne-Down-Konverter + ADALM-Pluto + SDR-Console.
2. Modified LNB + AMSAT-Down-Konverter V3d (GPS) + IC-7300 (50 MHz) + WIN4ICOMsuite (Transverter-Mode)

WB-RX: 2. Modified LNB + AMSAT-Down-Konverter V3d (GPS) + Minitiouner Pro2 + Minitioune v0.9beta

NB-TX: Ft-817ND (Tuned by SDR-Console) + SG-Lab Transverter + Att + SG-Lab 20W-PA (5W Out)

WB-TX(planned): LIME-SDRmini + PA (50/150 W)

vy 73, Martin DL9SAD

I am using the 1.3 OLED Displays from AZ for Minitiouner and the AMSAT V3d Konverter with good success. I failed with the 0.96 Display. It uses a different protocol ...

Sounds good !!!

Has someone experience with Rasberry 4B+ and Raspian-Buster ?

Habe auch gute Erfahrungen mit diesem VNA gemacht ...

73, Martin DL9SAD

Hello Technicians,

I need some help wit my OPTICUM LTP-04H Lot S/N:18-12-0:

I dissassembled it and I have som questions:

The crystal is on the backside. I removed it. It is connected to the 2 pads on the front (marked in the picture below).

1. Which pad should I use to insert the 24 MHz signal. The "Hot End" ? Which is it ? How can I find it with measurements ?

2. Can the crystal stay in place, when the "Cold End" is cut off ?

vy 73, Martin DL9SAD

My QO-100 Downconverter V3D arrived today. I assembled it and ist works (see picture).

With the LNB, I had no success: I bought an OPTICUM LPT-04H for modification, but it has an other PCB. No quartz ...

So my question: Where can I get the right LNB ?

73, Martin DL9SAD

Looks very nice ...

vy 73, Martin DL9SAD

I want to modify a OPTICUM LRP04H, but the Heiner proposed did not help me ?

It semms to be a good idea, to use a quadr lnb and want to test it.

Martin

Has anyone tried GQRX on Raspberry Pi 4 ?