500 kHz Filters
-3/6 db -60 db CASE PRICE
SUPER CW FILTER No Label F501V-05F AM??
500.8-501.2 @ 6 V $ 75
525-9588-010 F500Y08 AM 0.70 @-3 3.60 Y w/flange 75
526-9421-000 F500Y70 AM 7.0 19.0 Y w/flange 35
526-9378-00 F500Y60 AM 6.0 13.2 Y 45
526-9319-00 F500F60 AM 6.0 12.9 E ARR-41 40
This filter has been opened and coil replaced to repair
PRC-47 filters - for conversion to LSB for 80 and 40 meters
526-9377-00 F500Z4 USB 2.7 5.80 Y 45
Available filter curves [1] [2] [4]
No Label F500Z4? same curve shape, insersion loss, loading C
Available filter curves [1] 40
526-9376-010 F500Z5 LSB 2.7 5.80 Y PRC-47 Stock 35
526-9412-000 F500Z6 USB 2.7 6.5 Y 35
526-9572-001 F500Z6A USB 2.7 35
526-9420-00 F500Z10 USB 3.2 6.0 Y w/flange 40
526-9410-00 F500Z11 LSB 3.2 6.0 Y w/flange 45
526-9997-010 No data - measures as 3.5 KHz USB Y/flange 35
526-9998-010 No data - measures as 3.5 KHz LSB Y/flange 35
No Label USB Y 20
No Label LSB Y 20
No Label USB F500Z-22C??? V 50
455 kHz Filters
526-8676-010 Torsion Bar AM 0.60 1.50 LP 75
526-8477-100 AM 0.66 1.83 V 75
526-9308-00 F455Q-1 AM 1.0 1.77 V-tall 40
526-9343-00 F455Y160 AM 16 27.5 Y 35
526-8415-010 USB 3.4 6.5 V 40
526-9897-010 USB 2@-3 5.5
slightly larger than FA case 35
526-9605-010 F455Z16 USB 2.3 5.0 FA 35
526-9724-010 F455Z32F USB 2.35 4.3 FA 45
526-9665-010 F455Z-23C USB 3.1 4.1 V 75
No Label F455Z-23C? USB 3.1 4.1 V 65
526-9892-010 R366348-1 USB 3.3 V 45
No Label 20 kohm Z USB 3.1 5.4 Y 35
526-9969-020 92062-12 AM 1.0 3.9 V
Opened and repaired 40
R-390A 455 kHz Filters
Dittmore-Freimuth 2 kHz AM 2.14 4.89 N 45
Motorola 4 kHz AM 3.89 6.74 N 45
Label missing, one terminal broken on end but usable
Motorola 8 kHz AM 9.43 16.84 N 45
Motorola 16 kHz AM 15.01 24.07 N 40
Motorola 16 kHz AM 15.86 24.07 N 40
Slight corrosion on case.
450 kHz filters - Collins 651S1 851S1 HF 8054
HF-2050 RT-1016 ARC-153
AM
526 9643 010 F450V60F AM 6.00 23 V 60
Coil repaired by cutting end from case - resealed with
electronic grade RTV.
526 9643 030 F450V60F AM 6.75 23 V 75
Coil repaired by unsoldering terminal and fixing wire
to transducer coil.
526-8698-010 450 kHz center ~9 kHz Torsion Bar filter 40
USB
526 9831 010 F452FD19F 2.0@3 5.4 FD 60
526 9634 010 F450Z1C USB 2.7@2 4.4 V 60
Available filter curves [1] [2]
526 9678 020 F450Z3C USB 3.1@3 4.75 V 50
Filters without labels V 50
Available filter curves [1] [3] [4] [6]
LSB
Filters without labels V 50
Available filter curves [2] [5] [8]
Misc:
526-9310-00 F455Q3 435-478 kHz $ 10
526-9304-00 F308U03 AM 0.30 16.00 U 10
526-9751-00 F462FD130F No Label 447-462 kHz FD 10
526-9311-00 F300Z-5 LSB 2.65 5.20 U 786H-1 10
526-9099-00 F250A-67 AM 6.7 13.4 C 10
526-9012-00 F250A-20 AM 2.0 4.3 C 10
Non Collins filters:
Crystal Filters:
40.455 MHz Center Freq 20 kHz wide $ 40
40.455 MHz Center Freq 40 kHz wide $ 30
Ceramic Filters:
Murata CFR455H 6 KhZ@ -6, 15 kHz @ -60 $ 17.50
Murata CFS455C 26 KhZ@ -6, 46 kHz @ -70 $ 12.50
NTKK LF-D6 6 KhZ filters can be purchased from
Mike Maghakian mmaghakian@scc.spokane.edu. Contact him
for current price and availability.
BFO Crystals and Oscillators:
455.000 kHz crystals HC-6/U $ 10
Assembled and Tested 455 kHz BFO 1.5" x 1.8" $ 35
BFO/Xtal oscillator parts kit without crystal $ 10
printed circuit board and components
Crystals HC-6/U
45.500 MHz (overtone?) $1
Crystals HC-49/U
2.4576 MHz 2/$1
2.500 MHz 2/$1
4.725 MHz 2/$1
5.360 MHz 2/$1
8.000 MHz 2/$1
10.000 MHz 2/$1
11.000 MHz 2/$1
11.0592 MHz 4/$1
12.000 MHz 2/$1
20.000 MHz 4/$1
22.000 MHz 2/$1
21.333 MHz 2/$1
61.855 MHz (overtone?) 2/$1
70.333 MHz (overtone?) 2/$1
Crystals HC-49/S (Short case HC-49)
4.915 MHz 2/$1
12.000 MHz 4/$1
Crystals HC-49/US SMD (Short case HC-49 Surface Mount)
5.000 MHz 2/$1
10.000 MHz 2/$1
12.000 MHz 2/$1
16.000 MHz 2/$1
Crystals Case smaller than HC-49
4.9152 MHz 6/$1
Mechanical Filter info
Collins Case size guide: not including terminals
Y cylinder 2.23" long .45" diameter terminals at each end, metal
V rectangle 2.73" long .5" wide .6" tall terminals each end
of bottom, metal
FA rectangle 2.53" long .56" wide .6" tall terminals each end
of bottom, plastic case
E rectangle 2 13/16" long 15/16" wide 1" tall terminals each
end of bottom, metal
K cylinder 3" long, .775" diameter terminals at each end, metal
with flange for R-390A
Note AM indicates only that the filters are centered on the
listed IF frequency - they might be suitable bandwidth for
CW or digital modes rather than voice Amplititude Modulation.
USB and LSB filters are offset about 1.5 kHz above or below
the IF freq and normally would have a 500 kHz or 455 kHz xtal
controlled BFO. USB or LSB would be selected by changing
filters. More expensive to use two filters instead of one, but
these are mostly for military radios, after all. Cost is of
little concern.
Terms:
Filters guaranteed to be functional, but may NOT meet all
Collins specifications. I will replace or refund for any
filter not satisfactory, provided the coils are not opened.
Data sheet copies or information will be provided on request,
where available.
For orders within the US of A, add $5.00 per order to the
above prices for postage and insurance. Shipment by priority mail. Other
countries by arrangement. Personal checks, money orders, or
PayPal accepted.
E-mail to John kk6il@amsat.org
Use Mechanical Filter as an e-mail subject. E-mail with blank subject
is deleted automatically as spam.
Copyright © 2003,2004 John Kolb
Last revised July 10, 2005