Differentiated band switching frequencies > 23cm?
Differentiated band switching frequencies > 23cm?
Hello,
is it not possible to do a differentiated band switch (for LNA and/or PA) with frequencies > 23cm with the Portsdown, like Langstone?
is it not possible to do a differentiated band switch (for LNA and/or PA) with frequencies > 23cm with the Portsdown, like Langstone?
73 Thomas
DL5BCA
DL5BCA
Re: Differentiated band switching frequencies > 23cm?
Hello Dave,
Thank you for the answer
automatic only 4 status, by output MSB LSB.
I think i have to use a MCP23017.
I will test at next weekend.
Thank you for the answer
automatic only 4 status, by output MSB LSB.
I think i have to use a MCP23017.
I will test at next weekend.
73 Thomas
DL5BCA
DL5BCA
Re: Differentiated band switching frequencies > 23cm?
Do I have to activate it in portsdown to control the MCP23017?
It works at the Langstone.
It works at the Langstone.
73 Thomas
DL5BCA
DL5BCA
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Re: Differentiated band switching frequencies > 23cm?
From memory, I think I had to do it from the RPI dashboard via SSH....
I got it working and tested, but I have not used it so far and the card has been rebuilt since. Not sure if its retained in the RPi or on the card...
Gareth.
I got it working and tested, but I have not used it so far and the card has been rebuilt since. Not sure if its retained in the RPi or on the card...
Gareth.
Re: Differentiated band switching frequencies > 23cm?
Hi Robert
There are 3 switching lines (the transverter line is used as the 3rd), so 8 combinations are available. I am working on increasing this to 4 lines for 16 combinations.
Control of the MCP23017 is not supported by Portsdown.
Dave
There are 3 switching lines (the transverter line is used as the 3rd), so 8 combinations are available. I am working on increasing this to 4 lines for 16 combinations.
Control of the MCP23017 is not supported by Portsdown.
Dave
Re: Differentiated band switching frequencies > 23cm?
Hi Dave,
MCP23017: Then I misunderstood that. I understood it that way, because only 3 lines are available, an I2c expander was chosen as an alternative.
Now a good 8 possibilities are enough.
Can I set the signals myself, or are they fixed?
MCP23017: Then I misunderstood that. I understood it that way, because only 3 lines are available, an I2c expander was chosen as an alternative.
Now a good 8 possibilities are enough.
Can I set the signals myself, or are they fixed?
73 Thomas
DL5BCA
DL5BCA
Re: Differentiated band switching frequencies > 23cm?
Hi Thomas
You can force the 3 outputs to your own settings by setting them in [Menu 3], [Band Settings], [Desired Band], [Express and Lime Port Settings] to numbers above 16:
The script that does this is here: https://github.com/davecrump/portsdown4 ... er.sh#L139
I am currently revising all of the band switching so this will change soon, but there will be some backwards comapatibility.
Dave
You can force the 3 outputs to your own settings by setting them in [Menu 3], [Band Settings], [Desired Band], [Express and Lime Port Settings] to numbers above 16:
Code: Select all
16: 000
17: 001
...
23: 111
I am currently revising all of the band switching so this will change soon, but there will be some backwards comapatibility.
Dave
Re: Differentiated band switching frequencies > 23cm?
Thank you for the information Dave.
73 Thomas
DL5BCA
DL5BCA