Radio receiver alignment indicator

Telecommunications – Receiver or analog modulated signal frequency converter – Measuring or testing of receiver

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

455 67, 455154, H04B 106

Patent

active

042323983

ABSTRACT:
A predetermined frequency alignment signal and a white noise source signal are alternately switched through the intermediate frequency amplifier stage (IF) of the receiver being aligned. A series connected integrating capacitor and tuning meter couple between the receiver's detector output and ground potential.
In operation, during the interval of white noise being applied to the IF the tuning meter is shorted and the capacitor is charged to a net voltage V.sub.n which is representative of the center frequency of the IF. When the alignment signal is applied to the IF, the tuning meter short is removed and a signal V.sub.s appears across the capacitor-meter circuit, whereby the meter reading is indicative of V.sub.s -V.sub.n which represents relative receiver alignment.

REFERENCES:
patent: 3273065 (1966-09-01), Stover
patent: 3486112 (1969-12-01), Bayer
patent: 3487313 (1969-12-01), Cushman et al.
patent: 3506915 (1970-04-01), Harris
patent: 3564420 (1971-02-01), Webb
patent: 3628151 (1971-12-01), Roeder
patent: 3631346 (1971-12-01), Riggs
patent: 3875328 (1975-04-01), Gibson et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Radio receiver alignment indicator does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Radio receiver alignment indicator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Radio receiver alignment indicator will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1648697

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.