You have to be very careful when using notch filters. Try to ensure that even with the notch not placed on the carrier that the signal level will not cause damage.
I saw someone destroy 2 spectrum analysers while doing a demonstration to the customer by changing frequency on the radio under test taking the carrier outside of the notch!!
73
Jeff G8HUL
toggle quoted message
Show quoted text
-----Original Message-----
From:
[email protected] <
[email protected]> On Behalf Of Martin via groups.io
Sent: 18 June 2024 21:38
To:
[email protected]Subject: Re: [tinysa] Attenuators, distance and overload #tinysa
On Tue, Jun 18, 2024 at 07:58 PM, Toni Ciscar wrote:
You can use a sharp stop band filter that suppresses the fundamental by certain dB.
A notch filter can also be used to reduce the level of the fundamental, and improve the overall dynamic range.
This is common practice when making IMD measurements.
Regards,
Martin
