Projects
Double stack 1/2 lambda x 2 with sperrtopf matching base.
Welding Rod Slim-jim
My earliest homebrew 2m antenna. Slimjim made from 3 pieces of 1m brass welding rod. I installed this antenna in the attic to protect from lightning and weather. It can trigger repeaters on Genting, Bukit Lanjan and Gunung Telapa Buruk. 9M4RES, Astra, 9M2RUK, 9M2RKK, 9M2RTB, 9M4RCN, 9M4RBC
Sperrtopf-homebrew Antenna
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Sperrtopf Antenna with silicon sealing between element and sleeve |
Bottom view of Sperrtopf antenna. |
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Sperrtopf installed |
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Folded Colinear Antenna |
 Folded colinear antenna made from brass welding rod supported by PVC pipe. Now it belongs to 9W2JAZ ’sob’ ’sob’… |
 Folded Colinear antenna at dawn distant record Shah Alam - Kajang 4-7 (1 Watt), Kajang - Genting repeaters 5-9 (100milliWatt) |
 Aluminium Folded Colinear antenna not yet tested |
Plan for Folded Collinear Antenna Plan1 Plan2
HB9CV - Phased Array Antenna |
 HB9CV Phased Array made from 9mm diameter Aluminium tube with a 20mm squre Aluminium boom. |
 Another view of HB9CV Phased Array |
 Feeding HB9CV Antenna Look at the 56pF capacitor. It is a 1kV capacitor salvaged from a Network Interface Card |
Plan for HB9CV antenna Plan
1/4 Wave Whip Antenna (Mobile) |
 Whip antenna made from Stainless Steel Rod, soldered to PL259 connector. |
 Nice looking antenna but look so cheap, so it cannot grow legs…. you know what I mean? |
best nampak slim g abg. boleh tlg buat satu tak… berapa harganya.
pls call me back.
Slim-jim yg dalam attic tu ke? yang tu dulu modal dalam Rm5 sahaja sekarang tak tau la harga copper dah mahal. Maybe next-time ada dalam flea market.
aSSALAMuaLAIKUm
AbG TOLONG KASI NO 55 ABG saya nak JumPa lah
Pasai Antena Abang Tu
Ini No 55 saya : 017-3196873 Abg Aji Putrajaya
Prototype Sperrtopf ada dekat 9W2CIA kalau nak copy…no tel dia dah sms
Tq Jazakallah dah jumpa Ustad Zubir dan Ustad dah QSO dengan CIA dalam jaluran Insyaallah CIA akan beri diagram antena tuu/
Apa apa pun terima kasih atas segalanya
Rizal Putrajaya8734