Radio frekwensi...

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Radio frekwensi...

wanto
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Posts: 186
Joined: Sep 2010

#96

12-04-2011, 08:08 AM

Tommykwitang link=topic=3513.msg73302#msg73302 date=1302559085 Wrote:Kalo cari yg aneh2 gitu sebaiknya hubungi PT.Elnusa anak perusahaan Pertamina. Soalnya transmission line semi rigid dan tahan panas kalau bukan coax khusus seperti Heliax yg super mahal, mungkin harus dirakit dari pipa tembaga atau alumunium dengan perhitungan yg teliti. Didalam coaxnya atau transmission jenis hollow harus dialiri oli khusus yg tdk bocor RF sebagai pendingin yg akan mengalir didalam coax/pipa melalui proses pembuangan panas diperalatan khusus dgn radiator pendingin.

Kalau coax heliax mungkin harus carinya di Singapore, agar impedansi coax menjadi aneh 25 ohm dilengkapi balun transformer dikedua ujung coaxnya atau menggunakan antene tuner sebagai matching impedansi dikedua ujung coax. Atau bikin sendiri dengan bantuan rumus2 dan bimbingan dari THE RADIO AMATEUR HAND BOOK terbitan ARRL-USA.

Disini websitenya American Radio Relay League | Ham Radio Association and Resources

terimakasih pak tomy, tapi sepertinya yang saya perlukan coax yang flexible dan diameternya pun palingan di kisaran 3mm ini rencana mau saya buat pa boster sistem push pul, terimakasih atas linknya sangat menambah pengetahuan

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