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Access up to yesterday |
| Introduction. | 【【Lily Diary] Diary of Life in Mindanao |
| 09/12/16 | Radio shop in Cebu, C5 |
| 09/12/15 | diesel generator |
| 09/12/13 | Construction of Pipe Towers |
| 09/12/06 | 2m repeater tour |
| 09/12/05 | Eve and Christmas Party |
| 09/12/05 | XYL and GiGi Class C Exams |
| 09/11/30 | RCS-10 Antenna Switcher Modification |
| 09/11/21 | DU9XO and eyeballs |
| 09/11/20 | eyeball QSO |
| 09/11/20 | General Meeting of PARA |
| 09/11/19 | To Manila for PARA's 77th Annual Meeting |
| 09/11/18 | Planning a DX Vacation |
| 09/11/18 | Planning a DX Vacation |
| 09/11/17 | controller of 2mFM repeater |
| 09/11/15 | Idling stop device made with AVR |
| 09/11/14 | Luggage, baluns, etc. from Japan |
| 09/11/12 | Postal Conditions in the Philippines |
| 09/11/11 | Lotlot-kun Antenna Building |
| 09/11/09 | 144MHz Repeater Production Study |
| 09/11/09 | Request for Support |
| 09/11/08 | 18MHz installation for EU completed |
| 09/10/06 | CWGet |
| 09/10/28 | Amplifier Eye |
| 09/10/27 | 7MHz band extension modification |
| 09/10/15 | Car air conditioning repair |
| 09/10/15 | Balang arrives. |
| 09/10/14 | Split as the called party |
| 09/10/14 | Damage from Typhoon Manila |
| 09/10/13 | Arrival of filters from Japan |
| 09/10/08 | RTTY at 14 MHz |
| 09/10/04 | 18MHz Antenna for Europe |
| 09/09/26 | CQWW RTTY Contest |
| 09/09/25 | birthday party |
| 09/09/24 | 3.5MHz inverted V antenna |
| 09/09/24 | 14M3EL Emergency Repair |
| 09/09/22 | Second 18MHz 3EL |
| 09/09/21 | Harvested rice |
| 09/09/20 | Communication with FT5GA |
| 09/09/16 | Handbook of PARA |
| 09/09/15 | FT5GA |
| 09/09/13 | Antenna for field operation |
| 09/09/09 | Pileups begin abruptly. |
| 09/09/06 | IOTA OC-235 Camiguin Island |
| 09/09/03 | CW Interface |
| 09/08/30 | antenna group |
| Aug. 27, 2009 | Tower View |
| Aug. 26, 2009 | 18MHz 3-ele yagi installation completed |
| Aug. 24, 2009 | Completed installation of 14MHz 3-ele yagi |
| Aug. 23, 2009 | Correction of 18MHz Yagi |
| Aug. 20, 2009 | 144MHz 3-stage collinear |
| 09/08/19 | Adjustment of 14 MHz antenna |
| 09/08/17 | DV8UTP comes into play. |
| 09/08/16 | Coconut tower |
| 09/08/13 | 14 MHz antenna |
| 09/08/09 | NHK WORLD shortwave broadcasting |
| 09/08/07 | Suzuki Light Truck |
| 09/08/06 | tower |
| 09/08/05 | hardware store |
| Jul. 31, 2009 | FT-1000MP arrives. |
| 09/07/25 | Friends in Mindanao |
| Jul. 20, 2009 | Antenna fabrication for 18MHz |
| 09/07/19 | Antenna for 144 MHz |
| 09/07/14 | Electronic Components Store |
| 09/07/10 | 50 MHz antenna |
| 09/07/09 | Farm house and pigsty |
| 09/07/02 | CQ CQ CQ! |
| 09/06/10 | House construction and completion |
| 09/05/29 | Amateur Radio Antenna |
| 09/05/28 | Home construction and room conditions |
| 09/05/01 | Home construction and room conditions |
| 09/04/17 | rice harvesting |
| 09/04/15 | Rice harvesting soon |
| 09/03/09 | Home construction and room conditions |
| 09/03/05 | House building and electrical work |
| 09/03/02 | Go to Cagayan |
| 09/02/28 | Street corner scenery |
| 09/01/19 | Building a house and foundation |
| JI1FGX/DU9 Mindanao Diary144MHz 3-stage colinear（2009/08/20) | ||
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| I made a prototype of a 144MHz 3-stage collinear based on page 111 of "Introduction to Revised New Edition of Handmade Antennas" by CQ Publishing Co. The measurement was made using only copper wire, hung from the eaves and measured with MFJ-259B, and good values were obtained. By the way, a capacitor using a coaxial cable in the matching section can be used even if the value is a little off. By widening or narrowing the spacing of the gamma match above it, the SWR is likely to drop. We will work on replacing this prototype with aluminum pipe again later.  |
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| First, make a matching section capacitor according to the reference book Incidentally, since 3D-2V and 5D-2V are not available here, I used both 8D-2V sent from Japan and RG8U bought in Osamis.  |
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I made it a little longer because the capacity was a little low when I made it as per the reference book with RG8U |
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This is 8D-2V capacity |
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By the way, even without any capacitors connected with MFJ-259B, it shows 4pF. It is probably stray capacitance. |
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| This is the completed power feed section Incidentally, M-type square-seated connectors are not available, so I had to get creative. Make a capacitor at the end of 5m 8D-2V without cutting I installed radials and gamma matches there. Copper wire is stocked in the store for motor repair, but brass pipe was not available  |
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| Phase coil part I also looked for plastic and acrylic boards, but could not find any. Kitchen utensils, buckets, trash cans, so we'll have to substitute.  |
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| August 19, 2009 August 23, 2009 | ||