When a 25 TX, up to 2/3 of the power may be outside of the 833 RX.
Agreed if the audio filtering on the 25kHz-spaced Tx is very wide. I don't have any specs for modern 25kHz airband transceivers but I would think the audio bandpass drops off rapidly after 3 or 3.4kHz, so the max power in a 25k (AM) transmission sidebands would be only 6 or maybe 7kHz wide... Happy to be corrected!