[TenTec] Filter information

[Ken Brown]

Hi Jerry,

I suspect the the filter with 8043 on one of the crystals is a stock 
number 48243, model number 221. Either print is smudged on your filter 
to make the 2 look like a 0, or there is a typographical error on the 
Ten-Tec document I got some of the information from to make this list 
and that 2 on my list should really be a 0.

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


DE N6KB