Ten-Tec Omni 6+ Filters

Ten-Tec

Model: 216 217 218 219 220 221 282 285 288 ?
Center Frequency 9.002210 9.000750 9.001500 9.000750 9.001500 9.000500 6.299250 6.299250 6.300000 6.300000
6 dB BW, Hz 500 (rtty) 500 1800 250 2400 250 250 500 1800 2400
Number of Poles 6 8 8 6 8 6 6 6 8 8
Stock Code 48161 48036 48037 48055 48058 48243 48054 48053 48075 48074

Inrad

Model: 750 751 752 753 754 755 756 757 758 759 760 761
Center Frequency KHz 6299.25 6299.25 9001.5 9000.6 9001.5 6298.5 9001.5 6298.5 6298.5 9000.75 9000.75 9001.5
6 dB BW, Hz 400 250 2100 400 2800 2800 2400 2400 2100 400 250 1800
Number of Poles 8 8 8 8 8 8 10 10 8 8 8 8



Note: The 9MHz i.f. cw filters are designed for a sidetone of 750hz except those with center frequencies in bold, intended for a lower sidetone

The stock code and model number were typically ink stamped on the top of the Ten-Tec crystals. Somewhat hard to read but the stock code can usually be made out while the model number is often missing.