Hi,
Some more information:
With 90cm dish an unmodified Octagon twin LNB gives about 10.7. A same one modified for GPSDO gives about 10. In my plans are to try a lower phase noise source of 25 MHz to see if the MER increase.
Hi,
Some more information:
With 90cm dish an unmodified Octagon twin LNB gives about 10.7. A same one modified for GPSDO gives about 10. In my plans are to try a lower phase noise source of 25 MHz to see if the MER increase.
Hi,
Using a Bullseye :
60 cm : 8.0 MER
90 cm : 11.3 MER
When there no other signals at the WB.
Hi,
Complete video : Link
Hi,
Two screenshots from receiving DL0SHF.
Hello George
Obige Information habe ich eigentlich für Schweizer OM's und AMSAT-DL geschrieben. Die Email-Adresse von Greg, G0DUB, findest Du auf QRZ.com.
I actually wrote the above information for Swiss OM's and AMSAT-DL. Greg's G0DUB email address can you find on QRZ.com.
Hi, I am in contact with local emergency team for more.
73
Hi,
What is his contact details?
What frequency will be used?
FDX is mandatory?
Here it can be used a remote VHF/UHF as access to my shack due to covid19 is not possible. Is that acceptable?
Hi,
I have an excellent pass at Fri 7/5 @ 7:13 UTC (10:13 Local).
I will try to receive it using a 90 cm dish, a Octagon twin LNB with GPSDO to a Pluto with GPSDO. A GNURadio flowchart will be used to capture also IQ data for future decode of the signal. Now I try to write a Python script to calculate Doppler.
Hi,
A circulator is being modified and a SMA output was replaced the empeded dummy load. As it was impossible to remove the internal glue a hole was opened on top of the join point of the dummy load. Similar performance was noticed. A similar one is in the photo for comparison.
Hi,
If you have many meters of coax you do not need attenuation. In my case I have 60m!!! You must take into consideration the coax attenuation.
Hi,
If you prefer a band less than 70cm image rejection will be less than required (40 dB). This depends from the BPF of your upconverter. So for 2m it will be 2*144 MHz less aka 2400-2*144, relative near to the desired frequency.
Hi,
For driving a Pluto 10 MHz can be directly feed to it. There is no need to use 40 MHz. I use 10 MHz. Commands must be like:
fw_setenv ad936x_ext_refclk "<25000000>"
fw_setenv xo_correction 25000000
pluto_reboot reset
Hi,
A setup was tested permiting two independent QSO at any frequency in the NB transponder using a single transmitter and one LNB. In practice it could be possible to be one in the NB and the other to the WB. The setup was with the IC735 and a Pluto. IMD products was not noticed. A typical usage could be FT8 & USB simultaneous QSOs. Typically using only one SDR any number of indipentet transceivers can operate as enough output RF power and CPU exists.
This module depends on the hidapi module, which can be installed with the following:
sudo apt-get install python-dev libusb-1.0-0-dev libudev-dev
pip install --upgrade setuptools
pip install hidapi
In linux you may need to create a udev rule in order to use this without sudo privileges.
For example, edit /etc/udev/rules.d/99-usbrelay.rules and add this line:
Then restart your computer or run this command:
Hi,
The relay board modified. One relay replaced with a PC817 optocoupler. The resistor is a 390 ohm.
Hi,
An updated version of relay control. Now it returns the status of relay after reading it. Also a state(n) function added that read the relay status.
Hi,
I want to PTT my Pluto or any other SDR from GNURadio using the USB relay board that used also to SDR-Console. This is an example GRC file that do this for one relay.
Hi,
What I found important (I am not a German ham Hi Hi) is to connect 0 V from incoming power supply directly to the chassis. Also all the connectors must directly connected to chassis (except of course the Ethernet ).
Hi, yes I have the same problems...
Hi Gerhard OE3GBB ,
If you can try this version, it has 3200 instead of 2400 as codec2.