Filter information is also available in a table in the TenTecWiki at
http://www.tentecwiki.org/doku.php?id=filters .
73,
Alan N5NA
http://www.tentecwiki.org
David Chernenkoff wrote:
> Here's some information that Larry (N1YW) sent me with regards to my filter
> identification question, I thought others on the list might be
> interested...-David(VE6NHZ)> From: kartooo@netzero.net> Date: Fri, 16 Mar
> 2007 17:31:31 +0000> To: d_chernenkoff@hotmail.com> Subject: ten tec filters>
> > saw ur post on the refector...> > MHz filters (NAR or NAR-1/NAR-2 slots): >
> > MODEL: 216 217 218 219 220>
> ------------------ ---- ---- ----- ----- ------> C/F 9.00xxxx
> MHz: 2210 0750 1500 0750 1500> 6dB BW, Hz: 500
> 500 1800 250 2400> S/F, 6/60 dB: 2.75:1 2:1
> 1.8:1 3.5:1 1.7:1> Ins. Loss, dB: 8.0 7.5 2.0
> 14.0 2.2> Ult. Rejection, dB: 90+ 90+ 90+ 85+
> 90+> Z in & out, OHMS: 200 200 200 200 200> Number
> of Poles: 6 8 8 6 8> Stock Code:
> 48161> > > 6.3MHz fi
lters (selectable filters, over VFO knob): > > > MODEL: 282
285 288> ------------------ ---- ---- -----> C/F 6.299xxx MHz:
250 250 6.30> 6dB BW, Hz: 250 500 1800> S/F,
6/60 dB: 3.4:1 2.9:1 1.75:1> Ins. Loss, dB: 11.5 5.5
2.5> Ult. Rejection, dB: 90+ 90+ 100+> Z in & out, OHMS: 200
200 200> Number of Poles: 6 8 8> > > > > > > >
> Model Number / Stock Code / Bandwidth Hz / Center frequency MHz / >
Poles/other notes> > Following the number of poles are other numbers that have
been > reported> seen on these filters, or notes on the usage of these filters.
The > numbers 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 "normal" note
CW > filter > (750 Hz from CW BFO frequency)>
??? / 48057 / ??? / ???? / 4 / 84-05> 220 / 48058 / 2400 / 9.001500 / 8 /
8307 / 6840> 221 / 48243 / 250 / 9.000500 / 6 / Low note CW filter (500 Hz
from > CW > BFO frequency)> 282 / 48054 / 250 / 6.299250 / 8> 285 / 48053 /
500 / 6.299250 / 8> 288 / 48075 / 1800 / 6.300000 / 8 / 9125 / N5> unk / 48127
/ 6000 / 9 / AM filter in Paragons?> unk / 48074 / 2400 / 6.3 / Stock
(non-option) 6.3 MHz filter.> > You will see the part code instead 48075 on one
crystal.> > > > > Larry N1YW>
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