Ken,
Specifications for those Collins Symmetrical Torsional Mechanical Filters
can be found at: http://www.rockwellcollins.com/content/pdf/pdf_5532.pdf
The TT 48074 is an 8 pole filter
Stephen AD7TD
-----Original Message-----
From the list below you can see that Ten-Tec 6.3 MHz IF filters are
models 282, 285 and 288. They are also designated by stock numbers
48053, 48054, 48074 and 48075. If there is a three numeral model number
for the stock code 48074 filter, I would like to know it to update this
list.
Ten-Tec IF filter data
Model Number / Stock Code / Bandwidth Hz / Center frequency MHz / Poles
Following the number of poles are other numbers that have been reported
seen on these filters. They may be date codes or PCB design numbers.
216 / 48161 / 500 / 9.002210 / 6 RTTY filter
217 / 48036 / 500 / 9.000750 / 8
218 / 48037 / 1800 / 9.001500 / 8
219 / 48055 / 250 / 9.000750 / 6 /8047 / 6840
??? / 48057 / ??? / ???? / 4 / 84-05
220 / 48058 / 2400 / 9.001500 / 8 /8307 / 6840
221 / 48243 / 250 / 9.000500 / 6 Low note CW filter
282 / 48054 / 250 / 6.299250 / 8
285 / 48053 / 500 / 6.299250 / 8
288 / 48075 / 1800 / 6.300000 / 8 / 9125 / N5
unk / 48127 / 6000 / 9 / ?
unk / 48074 / 2400 / 6.3 / Stock (non-option) 6.3 MHz filter>
The following reported as Collins mechanical filters for Omni VII, and
Orion.
Filter Number TT Item # Filter BW
526-8733-010 = 2032 300Hz
526-8693-010 = 2031 500Hz
526-8694-010 = stock 2.5kHz
DE N6KB
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