On Mon, 2007-12-31 at 12:44 -1000, Ken Brown wrote:
> Since someone asked about filters, I am reposting this list, and once
> again asking for any more information you may have to fill in the gaps:
>
>
> 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 Omni VI filters
>
> Filter Number TT Item # Filter BW
>
> 526-8733-010 = 2032 300Hz
> 526-8693-010 = 2031 500Hz
> 526-8694-010 = stock 2.5kHz
>
Those last three sure look like Collins part numbers? 455 KHz mechanical
filters for Orion
or Omni VII? Surely not Omni VI!
73, Jerry, K0CQ
>
>
>
>
>
> DE N6KB
>
>
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