. QST . Type At -6 DB At -60 [ 353B-08 kc kc 353B-12 kc kc 353B-3) kc kc 3538-60 kc Net Eoch $ The 353B-serles Adopter between the IF cons in theSP-600-JX receiver. kc kc kc Net Each. $ The 353D-series Adapter in the Notional HRO-50 orHRO-50T1. COLLINS RADIO COMPANY CEDAR RAPIDS, IOWA Popularity of Collins Mechanical Filters and Me-chanical Filter Adapters in the 75A Amateur Re-cei\ers has resulted in many requests for Mechan-ical Filter Adapters designed for use in other pop-ular recei\ers. The advantages of the mechanical filte
. QST . Type At -6 DB At -60 [ 353B-08 kc kc 353B-12 kc kc 353B-3) kc kc 3538-60 kc Net Eoch $ The 353B-serles Adopter between the IF cons in theSP-600-JX receiver. kc kc kc Net Each. $ The 353D-series Adapter in the Notional HRO-50 orHRO-50T1. COLLINS RADIO COMPANY CEDAR RAPIDS, IOWA Popularity of Collins Mechanical Filters and Me-chanical Filter Adapters in the 75A Amateur Re-cei\ers has resulted in many requests for Mechan-ical Filter Adapters designed for use in other pop-ular recei\ers. The advantages of the mechanical filter approachto receiver selectivity may be immediately rec-ognized. For instance, Filter Adapters eliminateproblems normally associated with improving re-ceiver selectivity. Installation requires only thatan IF tube be removed and the Filter Adapterplugged into its socket. No modification or dis-figuration is necessary. The Collins MechanicalFilter Adapter is self-contained, permanently tuned,and power and signal circuits are obtained fromthe tube socket. Gain of the Filter Adapter matchesthat of the IF tube replaced. The convenient plug-in feature of the Filter Adap-ter provides a means for selecting a choice of band-width for
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectradio, bookyear1915
