Filters RF / AO-Journal p606

Homemade & superb

filters graphical approche
williamson-labs.com

Insertion loss - V = 10 db / div - H = 1 Khz / div

--- Filters ---
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8 Poles Xtal Front End Filter - F6AOJ
Band Pass Filter 8.215 MHz IF out K3
Filtre Réjeteur de Broadcast
Roofing filter sur TS850 - F5PED & F6AOJ
Roofing filter on TS850 - english version
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YU1LM 160m band pass filter
W3LPL receiving filters
YU1LM vs W3LPL - F6AOJ
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Receiver Band-Pass Filters W3NQN
BCC - Bandpassfilter 150 w - ( W3NQN )
WX0B Filters and filter switching systems
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Effect of 80 m bpf on signals from a K9AY loop
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RFsim99 - filters & amp's modeliser
Filter Solutions Descriptions
Digital Filter Terminology
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home made Crystal filters Pan- Tex
Home of Mechanical Filters KK6IL
Collins mecanical filters K6JRF
Modelised 40m BPF of FT1000-mp - F6AOJ
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Understanding RFI by K9YC
Constant k filter
Chokes by N4IS
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Dielectric Resonant Filter

SHF only

--- Mesurer des Filtres ---
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VNA & cie
F6AOJ Lab
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--- Crystal Filters ---
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Sherwood Engineering
Inrad
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-- Ham Products Review --
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ICE 130B
Dunestar BPF model 300
High Power Lowpass Filters - Allen Avionics
MFJ 989C Mod's G3YNH
Medium Wave (AM Broadcast) Band Reject Filter
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BP filter 80-160 - rej 70dB : RR251 Raven-research

RF preselectors - M0WWA
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dont use firefox for this page

Filters
Rx
( mostly rx )

8.215--> I
0 dB-----

V : 2 dB / div

H : 100KHz / div

BW 200 KHz

perte d'insertion 1dB

last Update 14/04/2013

--- Concepts ---
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Filter definitions
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Common mode chokes
What is a Band Pass Filter ?
Experiments with a simple Low Pass Filter - W7ZOI
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Clifton Laboratories K8ZOA
QRO les voisins - F6AOJ
Filtre anti MW
Filtre ou Duplexeur ?
Le tube de l'été
ESD Filters
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V= 10 dB /div H= 1Khz /div F0=7.083 Mhz ( LSB 7.085 )

Filters Rx

Xtal LC WL/4

LP BP HP

Band Pass Filters

RF Filter : 15/07/2008

RF Splitter 1x ant --> 2x Rx - F6AOJ

Ham Made - Home Made

RF Filter : 03/12/2001

Filter à Quartz 8 poles - F6AOJ

Ham Made - Home Made

RF Filter : 14-04-2013

Filtre High Pass 50 MHz 100w - F6AOJ

Ham Made - Home Made

RF Filter : 01/112009

Filtre 8.215 MHz pour FI K3 - F6AOJ

Ham Made - Home Made

RF Filter : 01/112009

Filtre Réjecteur Broadcast

Ham Made - Home Made

Harris RF-551A HF Pre/Postselector

This preselector covers 2 - 30 MHz
and can be tuned from the front panel or via installed BCD remote control.
Covers 2-30 MHz via frequency controls on its front panel
or remotely controlled via digital interface (installed).
These units have an average 5 dB gain
and exhibit excellent rejection outside of the selected frequency.
Operates on 120/220 Vac.