2304 MHz mods: Bandpass Filter, Harris SD-94517 (Farinon division)

Le filtre doit être resyntonisé.

Filter must be retuned.

Photos

Courbe de réponse de la bande passante
Photo #1
Filter shape adjustment.

Shaping of filter passband response curve

Bring up the 3 slugs on the side of the filter.

Original setting flattens and widens the top of the curve (good for ultra-wideband), but we want a narrower response.

Accéder aux noyaux d'accord
Photo #2
Tuning slugs.

Gain access to tuning slugs

Remove paint to permit adjustment of the tuning slugs (4×).

Syntoniser le filtre
Photo #3
Tune for new operating frequency of 2304 MHz.

Tune filter

Tune filter at 2304 MHz using a signal generator and power meter.


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