Ham radio QFH satellite antennas built at workshop

Participants built QFH antennas at the ORARI workshop

Participants built QFH antennas at the ORARI workshop

Radio amateurs built Quadrifilar Helicoidal (QFH) satellite antennas at a workshop in Indonesia organised by a local branch of the national amateur radio society ORARI.

A translation of the ORARI website report reads:

On Saturday, February 22, 2020, South Jakarta Local ORARI Jakarta held a Homebase Antenna Workshop for LAPAN-A2 / LAPAN-ORARI (IO-86) Satellite Communications. The workshop was held at the Local ORARI Club Station in South Jakarta, with guest speaker Suryono Adisoemarta (Yono / YD0NXX).

The agenda of this workshop consists of theory and practice. Theoretical material includes the introduction of amateur radio satellites in general, the introduction of LAPAN-A2 / LAPAN-ORARI (IO-86) satellites and satellite tracking techniques. Whereas practical material includes making a Quadrifilar Helicoidal (QFH) antenna and communication with the LAPAN-A2 / LAPAN-ORARI (IO-86) satellite.

The workshop was opened at 9:20 by Irsan YC0OST as Deputy Chair of South Jakarta Local ORARI. After opening, the program continued with the giving of theories about amateur radio satellites. In addition to the IO-86 satellite, there are also other amateur radio satellites that can be used such as AO-7 as the longest-running amateur radio satellite, AO-91, AO-95 and QO-100 which is a geostationary amateur radio satellite.

After the theoretical material was finished around 11:30, the program continued with the practice material for making QFH antennas. The materials for making the antenna provided by the committee included copper capillary pipes, 1 1/4 PVC PVC pipe, RG-58 cable, BNC connector and paper clips. Meanwhile, the equipment for making antennas was carried by each participant, such as solder, scissors, pliers, drill, and others. The atmosphere became even more exciting, because in making this QFH antenna there were separate challenges, especially in the RG-58 cable connection to the antenna element.

At 14:00, LAPAN provided a dedicated Voice Repeater slot on the IO-86 satellite for workshop participants to try out the antenna they made. But because the antenna is quite complicated, there is no antenna that can be tried on the Voice Repeater schedule. Mahesa Rani YD0OVE’s antenna was first tried on the regular Voice Repeater schedule. The results are quite satisfying. With her capital Handy Transceiver (HT) and a hand-held QFH antenna, YD0OVE successfully received 14 amateur radio stations.

In this workshop, several guests were present including the President of AMSAT-ID Hakim YB0AN, Chair of the Central Jakarta Local ORARI Edy YCØEDY, and the South Jakarta Local ORARI DPP Beben YB0HJW and Fahlifi YF0BRR.

Source ORARI https://tinyurl.com/IndonesiaORARI

Activation of IO-86 / LAPAN-ORARI FM Transponder



Dirgantara Rahadian YF0EEE has posted this information about the FM voice satellite IO-86 to the AMSAT-ID Facebook page:

We have Schedule Testing 1 Pass with LAPAN Command Center to Open Voice Transponder IO-86 / LAPAN-ORARI for all Country in Equatorial can Use and give me report via email yd1eee@gmail.com,
Date 14 November 2015 at 01:35 UTC – 03:40 UTC ..

Every Amateur can use the Voice Transponder
– Uplink 145.880 MHz tone 88,5
– Downlink 435.880 MHz

Note: IO-86 is in an equatorial orbit and should provide coverage between 30 degrees North and 30 degrees South of the equaror.

IO-86 Keps:

1 40931U 15052B 15316.15776324 .00001070 00000-0 60618-4 0 9994
2 40931 6.0030 69.3893 0012877 275.6206 84.2533 14.76374433 6653

AMSAT-ID on Facebook