RX2- receive difference than RX1

qst
Posts: 90
Joined: Fri Jul 28, 2017 9:44 pm

RX2- receive difference than RX1

Postby qst » Sun Mar 05, 2023 3:50 pm

Hello,
today I discovered that I receive stations differently on RX2 than on RX1. In setup, I turned on the same ADC on RX2. On RX2 on the same frequency and antenna as RX1 there is more noise, additional effects like from outer space. It's as if there were no input filters in the RX2. Do you need to change anything else in Thetis setup so that both receivers receive the same? And is the RX2 on while transmitting protected against the transmitter's signal?
Slawomir
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w-u-2-o
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Joined: Fri Mar 10, 2017 1:47 pm

Re: RX2- receive difference than RX1

Postby w-u-2-o » Sun Mar 05, 2023 4:06 pm

What you describe is impossible if both RX1 and RX2 are set up exactly the same and are both feeding off of the same ADC.

You need to make sure that AGC mode, AGC gain, NR modes, passband width, filter settings, everything is exactly the same.
qst
Posts: 90
Joined: Fri Jul 28, 2017 9:44 pm

Re: RX2- receive difference than RX1

Postby qst » Sun Mar 05, 2023 6:54 pm

I had ADC set by default and therefore receive was not good. I changed for RX2 the same as for RX! and it's ok. The only problem is the different bandwidth of the reception between RX1 and RX2. If I change the RX2 filter to a narrower one, it automatically changes to RX1. I have to do it right.
Thank you for your help.
Slawomir
qst
Posts: 90
Joined: Fri Jul 28, 2017 9:44 pm

Re: RX2- receive difference than RX1

Postby qst » Sun Mar 05, 2023 7:07 pm

Hello,
when I change the zoom for RX2, the zoom for RX1 also changes. That's why the filter in RX2 is wider. How to disable simultaneous zoom control for RX1 and RX2?
Slawomir
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w-u-2-o
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Re: RX2- receive difference than RX1

Postby w-u-2-o » Sun Mar 05, 2023 8:20 pm

There is currently no way to have independent zoom.

More to the point, did you find out what setting was not the same between RX1 and RX2?
qst
Posts: 90
Joined: Fri Jul 28, 2017 9:44 pm

Re: RX2- receive difference than RX1

Postby qst » Mon Mar 06, 2023 5:03 am

All clear. I had the default ADC settings. I assigned the ADC the same as in RX1 to RAX2 and everything returned to normal.

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