Code:
Attenuation of Channel Master NEW CM-3201
LTE Filter for the 14-36 UHF TV Band
Channel Input Output Attenuation
RF* dBmV dBmV dB
14 12.1 11.5 0.6
25 10.5 10.3 0.2
34 10.3 8.2 2.1
35 10.1 8.0 2.1
36 10.2 6.9 3.3
37 10.2 3.5 6.7
38 9.8 -6.0 15.8
39 9.2 -18.3 27.5
40 8.5 -31.5 40.0
Input level to filter increased 20 dB
because of increased filter attenuation
50 29.3 -42.3 71.6
55 27.1 -46.0 73.1
* Frequency of measurement for each channel
was video frequency if it had been an NTSC
channel; i.e. 1.25 MHz above low end of channel
Equipment used:
CM-3201 LTE Filter
F-81 Adapter
Blonder Tongue HAVM UHF NTSC Agile Modulator
Sadelco DisplayMax 800 Signal Level Meter
For comparison, a measurement of the filter by videobruce:
