Besi Siku sebagai Tiang Tower ( LEG) menggunakan besi siku ukuran 50x50x5mm & 40x40x4mm (ukuran full SNI). Pembuatan Tower Sederhana ini, di mulai dengan meraskit bagian Kaki ( struktur penulangan pondasi), Lubang Pondasi dan Pengecoran pada bagian bawah (Kaki Tower) di cor beton K-225 dengan ukuran dan bentuk konstruksi seperti …
Read More »Resizing Your Antenna for Another Band
-part 3- In the previous part, we talked about vertical antenna for 15 m band, while in the first part, we talked about 40 m band. Not so consistent isn’t it ? Well, let’s convert our 15 m band vertical antenna for 40 m band operation. Actually, converting/resizing an antenna for another …
Read More »Overload Your Vertical Antenna
“…It’s a neat trick !…” -Fred Harris- Part-2 In the last article, we’ve seen that under typical ‘newcomer’ installation conditions, vertical antenna potentially perform better than inverted-Vee antenna. But, there is two weaknesses of the vertical antenna ; 1. Vertical antenna needs a very good ground system installation (not trivial) and 2. Vertical …
Read More »Inverted-Vee Versus Vertical Antenna for DX Contact
“…We, engineer are really easy to believe, just show us the data…” Part-1 When it comes to inexpensive, easy, all around, resonant wire antenna, inverted-Vee configuration become the gold standard for low-bander amateur radio operator. It provides good gain (we will see that later), good coverage (at least medium distance, up to …
Read More »“CQ Satellite” ORARI South Jakarta
On August 12, 2017, ORARI Local South Jakarta (Operation & Techinical Division) was organizing a tactical workshop to learn and know how about AMSAT or Amateur Radio Satellite and making an antenna for doing QSO within Satellite elapse through YB land. Moxon Antenna is a suitable antenna for this workshop …
Read More »Grounded Tower Sebagai Antena TX 160 m Band
Kira – kira 2 minggu lalu Mr. Igor Khrustalev (VR2ZQZ) kembali mengirim e-mail pada saya, yang kali ini memberi kabar bahwa beliau akan QRV pada CQ WPX CW 2017 bersama YB2TJV (Om Dani) dari Kebumen, Jawa Tengah. Selain kabar tersebut, Mr. Igor kembali meminta saya untuk merancangkan (dan simulasi) antena 160 m band …
Read More »Merancang Antena Vertikal Top-Loaded 80 m Band, Bagian 1
Peringatan : Proses perancangan dan perhitungan pada tulisan ini menggunakan angka yang diambil dari asumsi penulis. Tujuan dari tulisan ini adalah sebagai perkiraan kasar (“ballpark estimation / quick and dirty calculation”). Angka hasil perhitungan yang sebenarnya sangat bergantung pada kondisi lingkungan dan karakter ground di tempat pemasangan antena. Beberapa …
Read More »EFHW – Antena ter-FAVORIT tahun 2014
Pada awal tahun 2014 silam SOTAbeams Co. UK mengadakan survey kecil-kecilan dg SATU pertanyaan: “What is your favourite PORTABLE antenna?” Niatan untuk menggelar survei ini bukannya untuk menemukan apa yang para amatir radio pikirkan sebagai antena portable yang berkinerja terbaik, tetapi lebih untuk mengetahui antena apa yang sebenarnya ingin atau …
Read More »Force 12 XR6 Product Review
Reviewed by Mark J. Wilson, K1RO, QST Product Review Editor, k1ro@arrl.org. In 2013, I cleared some trees and installed an InnovAntennas DESpole rotary dipole for 20, 15, and 10 meters on a decommissioned utility pole in my woods. That antenna worked fine, and I made thousands of contacts with it. Last April, I installed inverted V antennas for 12 and …
Read More »Antennae for the Low Bands..80 and 160m
http://www.iol.ie/~bravo/low_band_antennae.htm#My K9AY RX Antenna Antennae for the Low Bands..80 and 160m If you listen to the DX activity on the Low bands, you’d be forgiven for thinking that you’re wasting your time unless you have a 4 Square Array, 20 acres of Beverage antennae, a huge Amplifier, and a neck …
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