JI1FGX/DU9 Amateur Radio Diary, Mindanao, Philippines, IOTA OC-130.
English. Japanese.



Yesterday's access.
Introduction. [Lily Diary.
A diary of life in Mindanao.

25/10/13  ST2 interface for driving AC motor rotors
25/10/12  Received APRS signals from ISS
25/10/11  TNC software for APRS manual
25/10/10  TNC software for APRSVer1.0
25/10/09  Making myopia glasses
25/10/09  ICOM IC-820H PLL UNLOCK repair
25/10/05  435MHz Cross Yagi antenna production preparation
25/10/04  Receiving SSTV from the International Space Station
25/10/03  Repair of elevation rotator KR-500
25/10/02  145MHz Cross Yagi antenna production preparation
25/10/01  received APRS signal from ISS
25/09/29  CQ WW RTTY contest
25/09/27  SSTV from the ISS
25/09/26  WARC band fan-out antenna
25/09/25  levation rotator KR-500 acquired
25/09/23 APRS TNC software Dire Wolf with Hamlib
25/09/23 TNC software direwolf
25/09/21  Russian satellite RS-44 beacon
25/09/20 Installing a radio in a car
25/09/17 DH1NGP Peter radio vehicle
25/09/13  3.5MHz SWR increased
25/09/12 3.5MHz Zepp antenna adjustment
25/09/10  Geostationary satellite QO-100
25/09/09  Preparing for the satellite station
25/09/08  DU9JJY satellite station
25/09/07  14MHz late at night
25/09/03  Mitsubishi Strada Pickup Truck
 Oil Change
25/08/18 WSJT-X Automatic operation Ver0.1.0
25/08/18  JTDX Autonomous operation Program Ver0.6.3
25/08/10  Software List
25/07/26 AutoCWType_Ver1.5.8
25/07/20  Create one month's worth of ADIF files from JTDX Ver 2.6.5
25/07/19  Japan's Radio Wave Usage Tax
25/07/13  IARU HF Contest
25/07/10 Software updates
25/07/08 DXV500ZS linear amplifier repair
25/07/07 CQ Machine Program
25/06/21 LoTW system upgrade
25/06/18 RG8 for 3.5MHz arrived
25/06/15  Time setting Ver0.5
25/06/14 Drone Habsan ZINO arrives
25/06/12 Philippine Independence Day
25/06/11 Algeria 7X2RF QSL card.
25/06/10 Translation API Program
25/06/09 DXCC150 award certificate arrived
25/06/08 AutoCWType_Ver1.4.1
25/06/07 Introducing the Shack
25/06/06 A portrait drawn by ChatGPT.
25/05/26 Windows full-width/half-width switching.
25/05/17 OK2ZAW BCD to 16 converter.
25/05/16 For 3.5MHz Zepp antenna.
Stepping motors
25/05/15 3.5MHz stepping motor design.
25/05/14 3.5MHz tuning coil installed.
25/05/11 3.5MHz antenna installation completed.
25/05/03 JTDX Autonomous Driving Program Ver0.4.3.
25/04/26 Drone Habsan ZINO.
25/04/25 Time setting Ver0.3.
25/04/24 AutoCWType_Ver1.3.
25/04/23 Preparing for FTDX3000 LCD repair.
25/04/22 Installation plan for 3.5MHz Zepp antenna.
25/04/21 AutoCWType_Ver1.1.
25/04/20 10,14MHz antenna installation completed.
25/04/19 JTDX Autonomous Driving Program Ver0.4.1.
25/04/19 14MHz antenna pole installed.
25/04/18 ThinkPad X390 repair completed.
25/04/17 Search is now possible.
25/04/15 Preparing the 10MHz dipole.
25/04/12 Hexbeam Part8.
25/04/06 My ThinkPad X390 is broken.
25/04/05. Time setting program.
25/03/31 JTDX Autonomous Driving Program.
25/03/30 Automatic log sending from CWType to Hamlog.
25/03/21 Hexbeam Part 7.
25/03/20 FreeDV Part 3 First QSO.
25/03/18 FreeDV Part 2 QSO in the shack.
25/03/16 Hexbeam Part 6.
25/03/15 Install FreeDV Part1.
25/03/09 Hexbeam Part5.
25/03/07 Hexbeam Part 4.
25/03/05 28MHz antenna modification
25/03/01 FTDX3000 is broken!
25/02/28 Pileup at 50MHz FT8.
25/02/28 DXV500ZS linear amplifier repair.
25/02/27 Tower pipe rebuilding plan.
25/02/26 Direction to Japan from Ozamiz.
25/02/26 28MHz is not available.
25/02/23 DXV500ZS linear amplifier repair.
25/02/22 Hexbeam Part 3
25/02/21 Hexbeam Part 2
25/02/18 28MHz antenna construction.
25/02/17 18,24MHz antenna height construction.
25/02/16 Z26NS Cosovo.
25/02/14 21MHz FT8
25/02/12 7,21MHz antenna repair.
25/02/08 Operating CW at 21MHz.
25/02/05 DXV500ZS linear amplifier failure.
25/01/19 Input Director.
25/01/14 Temporary license renewal.
435MHz Cross Yagi Antenna Construction and Preparation (2025/10/05)
Cross Yagi antenna required for satellite communications.

Designed a 145MHz cross-yagi on October 2, 2025.Next, I designed a 435MHz cross-Yagi using MMANA.

Next is the design of the power supply.
It took half a day, but I managed to finish it.


The SWR is also 1.5 at the target frequency of 435.00MHz.
Compared to the SWR of the 145MHz cross yagi antenna, which was 1.06, this is a little higher, but still sufficient.

The impedance is Z = 25 + j30 Ω.
 
Ga is 11.7dBi.
F/B is 18.1dBi

Download the MMANA data here.
70cm_XY12_R6p3_scale+1p72_then+0p6.maa
70cm_XY12_R6p3_scale+1p72_then+0p6.
*
435.0
*** Wire ***
twenty four
0.000000, -0.167147, 0.0, 0.000000, 0.167147, 0.0, 6.3e-03, 0
0.141778, -0.162006, 0.0, 0.141778, 0.162006, 0.0, 6.3e-03, 0
0.221549, -0.156503, 0.0, 0.221549, 0.156503, 0.0, 6.3e-03, 0
0.318079, -0.154713, 0.0, 0.318079, 0.154713, 0.0, 6.3e-03, 0
0.452483, -0.152258, 0.0, 0.452483, 0.152258, 0.0, 6.3e-03, 0
0.603310, -0.150940, 0.0, 0.603310, 0.150940, 0.0, 6.3e-03, 0
0.766310, -0.148184, 0.0, 0.766310, 0.148184, 0.0, 6.3e-03, 0
0.929310, -0.144974, 0.0, 0.929310, 0.144974, 0.0, 6.3e-03, 0
1.119310, -0.145407, 0.0, 1.119310, 0.145407, 0.0, 6.3e-03, 0
1.299310, -0.145367, 0.0, 1.299310, 0.145367, 0.0, 6.3e-03, 0
1.500310, -0.145554, 0.0, 1.500310, 0.145554, 0.0, 6.3e-03, 0
1.713310, -0.136212, 0.0, 1.713310, 0.136212, 0.0, 6.3e-03, 0
-0.045945, 0.033517, -0.167147, -0.045945, 0.033517, 0.167147, 6.3e-03, 0
0.091811, 0.033517, -0.162006, 0.091811, 0.033517, 0.162006, 6.3e-03, 0
0.174934, 0.033517, -0.156503, 0.174934, 0.033517, 0.156503, 6.3e-03, 0
0.272469, 0.033517, -0.154713, 0.272469, 0.033517, 0.154713, 6.3e-03, 0
0.406538, 0.033517, -0.152258, 0.406538, 0.033517, 0.152258, 6.3e-03, 0
0.557366, 0.033517, -0.150940, 0.557366, 0.033517, 0.150940, 6.3e-03, 0
0.720310, 0.033517, -0.148184, 0.720310, 0.033517, 0.148184, 6.3e-03, 0
0.883310, 0.033517, -0.144974, 0.883310, 0.033517, 0.144974, 6.3e-03, 0
1.073310, 0.033517, -0.145407, 1.073310, 0.033517, 0.145407, 6.3e-03, 0
1.253310, 0.033517, -0.145367, 1.253310, 0.033517, 0.145367, 6.3e-03, 0
1.454310, 0.033517, -0.145554, 1.454310, 0.033517, 0.145554, 6.3e-03, 0
1.667310, 0.033517, -0.136212, 1.667310, 0.033517, 0.136212, 6.3e-03, 0
*** Feed Point ***
2,0
w2c,0.0,1.0
w14c,119.25,1.0
*** Lumped constant ***
0,1
*** Automatic Split ***
600,60,2.0,1
*** Computing environment ***
0,16.0,4,50.0,120,60,0
October 4, 2025.   October 9, 2025.