Interference Rejection Ratio Measurements on TV Sets Receiving Strong Ch. 6 Signals. This 1969 study is the most recent we have knowledge of. It analyzes interference to TV sets by FM broadcast stations when the set is tuned to channel 6 By L. Chwedchuk, A. L. Brown, L. B. Walker. Department of Communications, Ottawa. Except for the ZIP file, these are individual jpg files.

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• Cover page
• fig 1. strong ch. 6 color 1 int. signal
• fig 10.change in rej. radio of mono TV with rcvd. level, one int. sig.
• fig 11.change in rej. radio mixed sets, color and mono, with rcvd. sig. 1 interferor
• fig 11a. As above, two interfering signals
• fig 12. Change in rej. ratio mixed sets at selected sig. levels
• fig 12a. Comparison of av. interference rej. for 1 and 2 sigs, 89-92 @ 1,10 & 50 mV.
• fig 13. Variation of sin. sig. levels (1 sig case) with desired sig to produce perceptible int.
• fig 14. % of TV sets with have designated rej. ratio of greater for 1 int. FM sig.
• fig 15. % of TV sets with have designated rej. ratio or greater for 2 int. FM sigs
• fig 16. Comp. of int. rej. radions of TVs for low level Des. signal 1 int. FM
• fig 17. Calculation nomograph for FM location for low level TV6
• fig 17a. F50/50 FM & slider - Remember that?
• fig 17b. Sep dist required FM NCE and Grade B contourTV6
• fig 18. Limitation on operating params & location of FM stations ch 210
• fig 19. Co-location limits for NCE-FM band
• fig 2. Int. rej. ratio strong sig mono, 1 sig 88-92 MHz
• fig 20. Block diagram of test gear
• fig 3. Int rej. ratio strong sig color
• fig 3a. Int rej ratio strong sig mono 1 int. FM 88-108
• fig 3b. Compare av. rej. ratios of color and mono, 1 int sig 88-108
• fig 4. Int rej ratio strong TV6 2 FMs 88-92, color
• fig 5. Int rej. ratio strong TV mono with 2 FMs 88-92
• fig 6. As above, color
• fig 6a.Int. rej. ratio strong TV6, 2 FMs 88-108, color & mono
• fig 6b. Average rej. ratios of color and mono TV for strong TV6, 2 FMs, 88-108
• fig 7. Comparison ave int rej. strong TV6, 1&2 FMs, 88-92
• fig 7a. Comp of Ave. int. strong TV6, 1&2 FMs, 88-108
• fig 8. Int. Rej. ratio, typical TV mono, strong TV6, 1&2 FMs, 88-108
• fig 8a. Int Rej another typical TV as above
• fig 8b. As above but a color TV, sample #3
• fig 8c. As above, but TV sample #4
• fig 8d. As above but strong TV6
• fig 8e. Here they change the frequency of the FMs on set #5
• fig 8f. As above but TV sample #6
• fig 8g. Variation of rejecton of set #5 with multiple FMs at imtermediate TV6 signal level
• fig 9. Change in Rejection ratio of color TV sets wotj TV6 level & 1 FM.
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