[TenTec] 9Mhz filters

[Bill Tippett]

DJ0IP wrote:
 >Here CORRECTED:

         The latest TT instruction sheet (P/N 74089-C) corrects the 250
Hz #219 filter for Shape Factor and Insertion Loss as follows:

MODEL:                 217      218      219      220
------------------    ----    -----    -----   ------
C/F 9.00xxxx MHz:     0750     1500     0750     1500
6dB BW, Hz:            500     1800      250     2400
S/F, 6/60 dB:          2:1    1.8:1    3.5:1    1.7:1
Ins. Loss, dB:         7.5      2.0     14.0      2.2
Ult. Rejection, dB:    90+      90+      85+      90+
Z in & out, OHMS:      200      200      200      200
Number of Poles:         8        8        6        8

                                         73,  Bill  W4ZV

P.S.  Now you can see why the extra 12 dB amplifier is
OK for the 250 but too much for the 500.