OK1DFC EME

 

 

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 Date of last page update

 13.10.2014

Septum polarize - transformer, feed and all about

 

Basic

 

Feed with septum transformer edit from Power Point

Mechanical solution of 10386 MHz Septum feed  

Drawing of mechanical solution for 23 and 13 cm

Theory of septum polarization transformer IEEE source 

Other IEEE source 

  Flare for Septum polarization feed theoretical calculation

Flare for all bands - practical solution

Practical solution from Cassegrain system by OK1CA

Septum polarization transformer-calculation sheet Excel 24kB

If you do not use Excel here is .pdf

23cm  13cm  9cm 6cm  3cm

 

Practical solution on the picture

Click on the picture for detail

3 cm solution

3 cm assembled

23 and 13 cm

23 and 13cm

DFC microwave company has now this article 23 and 13 cm  for sale.

 

See here

 

W1GHZ - OK1DFC

Diagrams of septum polarizer which calculated Paul W1GHZ

 

    Without flare f/D 0,35 0,45   

     With flare for f/D 0,45 0,6     

 

W1GHZ page and Antenna book

Analysis of the OK1DFC septum feed by W1GHZ

Power Point presentation of Paul W1GHZ

Microwave Antenna book - Septum feed by W1GHZ

square wave guide

Microwave Antenna book - Septum feed by W1GHZ

 circular wave guide 

Septum feed with ring - by Paul W1GHZ

OK1DFC septum feed 3400 MHz

   NEW ANALYSES OF OK1DFC feed by W1GHZ

  NEW Analysis of RA3AQ feed by W1GHZ

  Optimize of RA3AQ feed for OK1DFC dish

 

WD5AGO

 

WD5AGO - 5600 MHz septum feed

  WD5AGO Tommy's solution for 6cm

 

DL4MUP

 

DL4MUP solution

DL4MUP results

 

PA0PLY

 

Interesting experience of Jan PA0PLY

New information about feed of Jan PA0PLY

  Other new information about feed of Jan PA0PLY

 

N2UO

 

Marc N2UO made a optimization on Dual mode Septum feed for 1296 MHz

 

G3LTF

 

Peter G3LTF modify N2UO Dual mode Septum feed to 6cm

 

RA3AQ

 

ANALYSES OF RA3AQ by W1GHZ

  UPGRADE of previous OK1DFC feed with RA3AQ circular wave guide

  Septum feed by Dima RA3AQ for 1296 and 2320 MHz

  Septum feed by Dima RA3AQ for 1,2 - 2,3 - 3,4 GHZ 0,36 F/D

  Septum feed RA3AQ for dish with F/D 0,4

Septum feed for dish F/D 0,5 - 0,55 by Dima RA3AQ 

Probe for RA3AQ feed with 7/16" connector

New dual feed with round septum

 

OM6AA

 

ANALYSES OF RA3AQ by OM6AA

Analyses were performed in CST Microwave Studio software at Czech Technical University in Prague by OM6AA

Revised OK1DFC square septum with collar choke by OM6AA

 

 

SM6FHZ

 

SM6FHZ 5 step septum solution from 1296 up to 10368 MHz

 

Family of Septum feed users

 

  (if you are using this feed too, please let me know I will present your call and link here)  

 

9H1BN - DK3BU - DL1YMK - DL9OM - DJ3FI - G4BRK - DK2AN - DL4MUP - OK1CA - OK1UWA - OK1DFC - OK1KIR - ON7UN - ON4BCB - JH1AOY - G4KLX - HB9JAW - DL3HRT  - WA1ECF - DF6NA - G4DDK - OM6AA - K1JT - KL6M  -  ZS5LEE - KD5FZX - PI4Z - WA5WCP - EI/DL1YMK - CT3/DL1YMK - WB2BYP - G4HUP - KL7UW - WW2R - G4DZU - VK4TZL - F8DO - VK7MO - PA3FXB - DF0MFG - GM3SBC - UN8GC - RW3BP - JH5LUZ - PY2BS - YO2IS - YO9FRJ  PA0PLY - RW1AW - F2TU -  TF/DL1YMK - 8N1EME - P43L (K2UYH) - N2UO - OK2KJT - OK3RM - K6JEY - N9JIM - G3LTF - DL1YMK/CX - VK2JDS - YO3JE - WD5AGO - SV1OE - 4O/OK1DFC - Z3/OK1DFC - E77DX - OH0/DL1YMK - OM/OK1DFC - 8J1AXA - LU8ENU - R2/DL1YMK - RA3AQ - RD3YA - W7IVU - LY/DL1YMK - PY2BS - OK2DL - DL6SH - OK3RM - OK2ULQ - G5WQ - G3LTF - VK2AMS - IS0/OK5EME - OK1CS - OK2DL - OK2ULQ OK1YK - TK/DL1YMK

 

Feeds assembling

Feed before testing

Prepared feeds

Flare for 0,5 f/D 13cm

Detail of flare 0,5 f/D

Flares for 1296 and 2320 MHz usable F/D 0,4 - 0,5

 

PLEASE use circular polarization from 1,2 GHz up. You see that the system is very easy now !

You can see "Prague EME convention 2002" about circular polarization here.

If you are interesting, let me know on  address.

  Back to top

 

 

Prime focus dish feeds

 

SM6FHZ

 

Comparation and simulation 432 MHz feeds

Loop feed presentation SM6FHZ

 

CT1DMK

 

432 MHz loop feed

 

 

OK1DFC

 

Recalculated loop feed of OM6AA to 432 MHz

 

OM6AA

 

Loop feed for 1296 & 2320 MHz by OM6AA

 

Family of Loop feed users

 

  (if you are using this feed too, please let me know I will present your call and link here)  

 

DL1YMK - G4CCH - OK1CA  - OK1DFC - W7IUW - IS0/OK5EME

 

 

Power amplifiers, EME equipments and other units

 

My first 432 MHz antenna system in 1996 usable for EME. Included 4x38 elements M2 Yagi's, MGF1302 preamplifier and Lunar Link power amplifier  2x3CX800A7-1,5kW.

In the 4x38el.M2  1996

First EME antenna 4x38el. M2

 

 My first 1296 MHz system in 1997. Included 3,8m dish, VE4MA feed, FHX35LGA preamplifier and PA with 2x2C39BA - 150W out, later TH338 1kW out. New feed at 1998 with septum polarize transformer.

Septum + preamp.

Septum in  the 3,8m  dish

View 3,8m dish

Myself and dish

 

432 MHz power amplifier with TH347 Project of 10m DISH f/D - 0,4 MEASURING  
Three Band TRV - 144 432 -1296 MHz   TCXO Improved N/F by G4DDK VLNA 1,2 GHz  
PLL LO 2,3 GHz and EME TRV 2,3 GHz SPANFI SSPA 140W RF SSPA 2,3 GHz  
LNA 432 and 1296 MHz with ATF54143 TIMER SOLID DISH wind load graph
SSPA driver 432 MHz - 300W LOG-PERIODIC 150-1500 MHz   DISH wind load calculation
SEQUENCER ETM9 - command manual pdf Feed horn for 144 MHz
Plate power supply  150kB Cathode power supply  150kB
144 MHz 1,5kW PA GS35B 144 MHz 300W SSPA driver
RUBIDIUM NORMAL 10 MHz 1296 MHz power amplifier with TH327

My QTH

Build-up new QTH in JN79FW - 329 m a.s.l.

Frozen DISH - December 2007

EME activities

YouTUBE - links

OK EME Top list

EME DX Peditions

"JT65 simple way to EME"  PDF presentation - CZ language - 1,6Mb 

FIRST OK - abroad

EME and DX traffic in OK

MAP 65 IQ - EME test 1296 MHz - You Tube

OK VHF/UHF/SHF TOP list

SUN noise during Eclipse 04/01/2011

EME power test

Measuring other noise sources 

EME contests - logs and info

ARRL DUBUS QRV logs  

ARRL EME contest 2007

EME DUBUS 2010 contest 432 MHz

432 MHz EME 10_2010

EME DUBUS 1296 MHz 2012

ARRL EME 2010

ARRL EME MW 2010

EME November 2010

EME DUBUS 2320 MHz 2012

ARRL EME contest 2011

EME DUBUS 2011 contest 1296 MHz

EME May 2010

EME ARI dig 2012  

ARRL EME 2012

EME DUBUS 432 MHz 2012

EME ARRL MW 2014

 

Interesting EME links

WEBs W.W. EME pages OK EME pages Other

 

CZ EME web in OK

 

12th. EME Conference 2006 Germany  

11th. EME Conference N.J. Princeton - USA 2004

11th. EME conference "Photo gallery" 2004 Princeton

10th. EME conference "Photo Gallery" 2002 Praha

 

K2UYH 432 MHz EME and above and news letters

 

JT65 EME logger

VK-ZL EME chat

ON4KST chat

EME logger on HB9Q web page

OA4O chat

Microwave TEXAS web page

South eastern VHF web page

Central States VHF society

Rochester VHF group

VHF DX Gallery
Coaxial web page
Microwave update web page

LUNAR link web page
FLUX web page

Solar web page
Japan EME WEB page

DUBUS Magazine
BIRD power meter
Keplerians data 

S.E.T.I.  web page

 

OE5JFL Johannes web page - 12m dish

ON7UN web page

PA3CSG web page

GM4JJJ web page

LA8LF web page

SM5BSZ web page

IK2MMB web page

G4DDK web page

G4RGK web page

G4CCH web page

OE9ERC web page

DL8YHR web page

DL7APV web page

 K2DH web page
VE1ALQ web page
KL6M web page
ND2X web page
WA8WZG web page
K3PGP web page
W6PQL web page
W1GHZ web page
W3SZ web page
W7GJ web page
WA1MBA web page
W2DRZ web page
W9IIX web page
K7XQ web page
N4MW web page

AD6IW

 

 

OK3RM

OK2DL

OK2POI

OK1UGA

OK1KIR

OK1DST

OK1UWA

OK1TEH

OK2KJT

OK1IA

OK1YK

OK2ULQ

OK1CS

OK1CA

 

Other EME Links