narrowbandadj.n.

1948 Proc. Royal Soc. 193 327 The arrangement could have been made more sensitive by the use of narrow-band audio filters.

1956 Nature 28 Jan. 178/2 A narrow-band tuned amplifier on 16 kc./s.

1971 M. S. Ghausi Electronic Circuits vii. 437 When extremely high Q and excellent stability are required in narrow-band bandpass filters, the use of crystal filters is practical.

1992 S. P. Maran Astron. & Astrophysics Encycl. 537/2 This type of radiation often consists of many narrowband emission lines that sometimes merge into an essentially continuous spectrum that has been called by various names, including..‘narrowband electromagnetic emissions’, and ‘narrowband kilometric radiation’.

1995 Data Communications Internat. 21 Aug. 42/3 The 3606 is a narrowband multiplexer with a single aggregate channel (up to 250 kbit/s), two voice channels, and up to six data interfaces.

2000 Times 17 Nov. 32/6 Until the majority of homes and offices have high-speed broadband connections instead of the current low speed narrowband connections, the Internet cannot deliver its full convergent promise.

1999 Wall St. Jrnl. 8 Oct. a18/4 Demand is shifting from voice to data, from narrowband to broadband, and from wireline to wireless.

2001 Guardian 15 June i. 24/7 While narrowband is now relatively cheap, Britain falls way behind in the upgrade to broadband.