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
filters (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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