23cm interdigital filters.
i can make filters to your specifications. ( i do not have a design principle yet for 23cm with notch filters.)

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23 cm low loss 0.3db filter for tx 100 euro

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1245-1320mhz bandpass or 1296mhz bandpass and little less then 0.5db loss. 100 euro.

very good for blocking 900 1800 2200 and 13cm signals.

 

bandpass of the atv tuned version with 0.75 db loss +/- 0.1db ripple.

 

 

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