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Date of last page update
08.05.2008
Septum
polarize - transformer, feed and all about
Feed
with septum transformer 
640kB
edit from Power Point
Mechanical
solution of 10386 MHz Septum feed
33kB
Drawing
of mechanical solution for 23 and 13 cm
Theory
of septum polarization transformer IEEE source
pdf 560kB
Interesting experience of Jan PA0PLY
(Jan do not use tuning screw)
New information about feed of Jan PA0PLY
Other
new
information about feed of Jan PA0PLY
Flare for all bands - practical solution
Practical solution from Cassegrain system by OK1CA
Diagrams
of septum polariser which calculated Paul W1GHZ
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Analysis
of the OK1DFC septum feed by W1GHZ
451 kB
Power Point presentation of Paul W1GHZ - 7Mb
Microwave
Antenna book - Septum feed by W1GHZ
1,2Mb
square wave guide
Microwave
Antenna book - Septum feed by W1GHZ
1,2Mb
circular wave guide
Septum feed with ring - by Paul W1GHZ
NEW
ANALYSES
OF OK1DFC feed by W1GHZ
UPGRADE of previous OK1DFC feed with RA3AQ circular wave guide
Septum
feed for dish F/D 0,5 - 0,55 by Dima RA3AQ
1,2 Mb
Septum feed by Dima RA3AQ for 1296 and 2320 MHz
Analyses were performed in CST Microwave Studio software at Czech Technical University in Prague by OM6AA
Septum feed RA3AQ for dish with F/D 0,4
Probe for RA3AQ feed with 7/16" connector
Septum
polarization transformer-calculation sheet – Excel 24kB
Practical
solution on the picture
Click on the picture for detail
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DFC microwave company has now this article 23 and 13 cm for sale.
Family of users and septum feed owners
(if you are using this feed too, please let me know I will present your call 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 - G4DUP - KL7UW - WW2R - G4DZU - VK4TZL - F8DO - VK7MO PA3FXB - DF0MFG - GM3SBC - UN8GC - RW3BP - JH5LUZ - PY2BL - YO2IS - YO9FRJ PA0PLY - RW1AW - F2TU - TF/DL1YMK - 8N1EME - P43L (K2UYH)
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Feeds assembling |
Feed before testing |
Prepared feeds |
Flare for 0,5 f/D 13cm |
Detail of flare 0,5 f/D |
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Flares for 1296 and 2320 MHz usable F/D 0,4 - 0,5 |
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Very soon will be ready also feed for 3,4 GHz, 5,6 and 10 GHz.
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.
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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. |
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In the 4x38el.M2 1996 |
First EME antenna 4x38el. M2 |
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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. |
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um + preampl. |
Septum in the 3,8m dish |
View 3,8m dish |
Myself and dish |
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"JT65
simple way to EME" PDF
presentation - CZ language - 1,6Mb |
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- Preparing -
PA 144 MHz with GS35B - OK1DFC design
Rebuild THOMSON PA TH-338 - 1296 MHz
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Plate
power supply |
Cathode
power supply |
