EMRFD Message Archive 6765
Message Date From Subject 6765 2011-11-04 09:11:33 Alberto I2PHD Terminating impedance of the Yaesu XF-455k-262-01 filter Hello all,
I am revamping an old JRC NRD-525 receiver. I applied the Kiwa mod for the ultimate 455 kHz rejection filter,
and now I would like to add, in the Aux position, a crystal filter I have in my junk box since years, namely the
Yaesu XF-455k-262-01 filter, which, according to its naming, should be a 2.6 kHz SSB filter with a shape factor
surely better than the stock ceramic filter factory-installed in this radio.
I have been unable to Google out the terminating impedance of this filter, to eventually modify the circuitry
in the NRD-525 to comply with that spec.
Does anybody have this data ?
/*73 Alberto I2PHD*/
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6775 2011-11-05 05:36:15 Gian Re: Terminating impedance of the Yaesu XF-455k-262-01 filter Ciao 'Uaglio',
the 455kHz filters in the Yaesu rtx are usually 2000 ohms // 30 pF
Enjoy your mods...
6777 2011-11-05 09:18:04 Alberto I2PHD Re: Terminating impedance of the Yaesu XF-455k-262-01 filter