Wednesday, March 30, 2011
Thursday, March 24, 2011
Active Filter part 1
Post kali ni saja nk citer pasal tajuk kat atas. rasa da kena kot ngan amatur nih.. hihi
Introduction
Filters are circuits that are capable of passing signals within a band of frequencies while rejecting or blocking signals of frequencies outside this band. This property of filters is also called “frequency selectivity”.
Filter can be passive or active filter.
Passive filters: The circuits built using RC, RL, or RLC circuits.
Active filters : The circuits that employ one or more op-amps in the design an addition to resistors and capacitors
Advantages of Active Filters over Passive Filters
-Active filters can be designed to provide required gain, and hence no attenuation as in the case of passive filters
-No loading problem, because of high input resistance and low output resistance of op-amp.
-Active Filters are cost effective as a wide variety of economical op-amps are available.
Applications
-Active filters are mainly used in communication and signal processing circuits.
-They are also employed in a wide range of applications such as entertainment, medical electronics, etc.
Active Filters
There are 4 basic categories of active filters:
1. Low-pass filters
2. High-pass filters
3. Band-pass filters
4. Band-reject filters
Each of these filters can be built by using op-amp as the active element combined with RC, RL or RLC circuit as the passive elements.
Rasa cukup kot sampai kt sini.. nnti kita sambung lagi.... k.
entry akan datang akan bercerita tentang 4 basic categories of active filter..
Introduction
Filters are circuits that are capable of passing signals within a band of frequencies while rejecting or blocking signals of frequencies outside this band. This property of filters is also called “frequency selectivity”.
Filter can be passive or active filter.
Passive filters: The circuits built using RC, RL, or RLC circuits.
Active filters : The circuits that employ one or more op-amps in the design an addition to resistors and capacitors
Advantages of Active Filters over Passive Filters
-Active filters can be designed to provide required gain, and hence no attenuation as in the case of passive filters
-No loading problem, because of high input resistance and low output resistance of op-amp.
-Active Filters are cost effective as a wide variety of economical op-amps are available.
Applications
-Active filters are mainly used in communication and signal processing circuits.
-They are also employed in a wide range of applications such as entertainment, medical electronics, etc.
Active Filters
There are 4 basic categories of active filters:
1. Low-pass filters
2. High-pass filters
3. Band-pass filters
4. Band-reject filters
Each of these filters can be built by using op-amp as the active element combined with RC, RL or RLC circuit as the passive elements.
Rasa cukup kot sampai kt sini.. nnti kita sambung lagi.... k.
entry akan datang akan bercerita tentang 4 basic categories of active filter..
Friday, March 18, 2011
Lego FT8900R dan Handy GP338
Assalamulaikum rakan2 sekalin..
Ada sorang rakan hams nk lego radio iaitu
Ada sorang rakan hams nk lego radio iaitu
YEASU FT8900R DAN GP338
DUA BARANG SEKALI
RM1500
DUA BARANG SEKALI
RM1500
Boleh Hubungi 9W2LHK-Pak Lan di talian 0195449766
Sapa cepat dia dapat.. okey...
73
Sapa cepat dia dapat.. okey...
73
Saturday, March 12, 2011
Upgrade boyfriend 5.0 to husband 1.0 - pentium8 version
Dear IT Support,
Last year I upgraded from Boyfriend 5.0 to Husband 1.0 and noticed a slow down in the
overall performance, particularly in the flower and jewellery applications that had operated flawlessly under Boyfriend 5.0.
In addition, Husband 1.0 un-installed many other valuable programs, such as Romance 9.5 and Personal Attention 6.5, but installed undesirable programs such as EPL 5.0, NBA 3.0 and ESPN 2.0. And now Conversation 8.0 no longer runs and House Cleaning 2.6 simply crashes the system. I've tried running Nagging 5.3 to fix these
problems, but to no avail.
What can I do?
Signed,
Desperate
-------------------------------------------------------------------------
Reply:
Dear Desperate,
First keep in mind; Boyfriend 5.0 is an entertainment package, while Husband 1.0 is an
operating system. Try entering the command C:\ I THOUGHT YOU LOVED ME and download Tears 6.2 to install Guilt 3.0.
If all works as designed, Husband 1.0 should then automatically run the applications Jewellery 2.0 and Flowers 3.5.
But remember, overuse can cause Husband 1.0 to default to Grumpy Silence 2.5, Happy Hour 7.0 or Late Night Teh Tarik 6.1. Late Night 6.1 is a very bad program that will create SnoringLoudly.wav files.
Whatever you do, DO NOT install Mother-in-Law 1.0 or reinstall another Boyfriend program. These are not supported applications and will crash Husband 1.0.
In summary, Husband 1.0 is a great program, but it does have a limited memory and cannot learn new applications quickly. You might consider additional software to improve memory and performance. I personally recommend Hot Food 3.0 and Lingerie 6.9.
Good Luck,
IT Support
Last year I upgraded from Boyfriend 5.0 to Husband 1.0 and noticed a slow down in the
overall performance, particularly in the flower and jewellery applications that had operated flawlessly under Boyfriend 5.0.
In addition, Husband 1.0 un-installed many other valuable programs, such as Romance 9.5 and Personal Attention 6.5, but installed undesirable programs such as EPL 5.0, NBA 3.0 and ESPN 2.0. And now Conversation 8.0 no longer runs and House Cleaning 2.6 simply crashes the system. I've tried running Nagging 5.3 to fix these
problems, but to no avail.
What can I do?
Signed,
Desperate
-------------------------------------------------------------------------
Reply:
Dear Desperate,
First keep in mind; Boyfriend 5.0 is an entertainment package, while Husband 1.0 is an
operating system. Try entering the command C:\ I THOUGHT YOU LOVED ME and download Tears 6.2 to install Guilt 3.0.
If all works as designed, Husband 1.0 should then automatically run the applications Jewellery 2.0 and Flowers 3.5.
But remember, overuse can cause Husband 1.0 to default to Grumpy Silence 2.5, Happy Hour 7.0 or Late Night Teh Tarik 6.1. Late Night 6.1 is a very bad program that will create SnoringLoudly.wav files.
Whatever you do, DO NOT install Mother-in-Law 1.0 or reinstall another Boyfriend program. These are not supported applications and will crash Husband 1.0.
In summary, Husband 1.0 is a great program, but it does have a limited memory and cannot learn new applications quickly. You might consider additional software to improve memory and performance. I personally recommend Hot Food 3.0 and Lingerie 6.9.
Good Luck,
IT Support
Hikayat Merong Mahawangsa
Cerita yang boleh ditonton seisi keluarga, melibatkan sejarah iaitu pembukaan langkasuka iaitu kerajaan kedah. Penuh dengan aksi melibatkan Rom, China dan Garuda...
ayat-ayat penuh maksud tersirat haha...
Audio yang baik.
Apa2 pun best la..
Cerita ini mengisahkan tentang seorang nakhoda dan pahlawan yang bernama Merong Mahawangsa yang dikatakan berasal dari keturunan Iskandar Zulkarnain. ada tahun 120, Empayar Rom ketika itu di bawah pemerintahan Hadrian sementara di negara China, Dinasti Han merupakan sebuah empayar yang kuat dan telah memperluaskan pemerintahannya ke negara Asia Tengah.Sewaktu angkatan Rom sedang membaik pulih kapal mereka di Goa, mereka meminta pertolongan Merong Mahawangsa mengiringi Putera Rom ke Langkasuka (dikatakan terletak di utara Malaysia) untuk berkahwin dengan seorang Puteri China yang cantik dari Dinasti Han.Bagaimanapun, puak lanun dari Geruda mempunyai perancangan yang berbeza. Mereka memutuskan untuk menculik Puteri China dan menjadikannya sebagai tebusan.Di hujung pengairan Selat Melaka, Merong Mahawangsa dan angkatannya diserang oleh Geruda.
Selepas itu aksi menuntu maruah bermula... hihi
Thanks KRU STUDIOS
comment pasal cite ni
Mangga Online
Utusan Online
Sinar Harian
ayat-ayat penuh maksud tersirat haha...
Audio yang baik.
Apa2 pun best la..
Cerita ini mengisahkan tentang seorang nakhoda dan pahlawan yang bernama Merong Mahawangsa yang dikatakan berasal dari keturunan Iskandar Zulkarnain. ada tahun 120, Empayar Rom ketika itu di bawah pemerintahan Hadrian sementara di negara China, Dinasti Han merupakan sebuah empayar yang kuat dan telah memperluaskan pemerintahannya ke negara Asia Tengah.Sewaktu angkatan Rom sedang membaik pulih kapal mereka di Goa, mereka meminta pertolongan Merong Mahawangsa mengiringi Putera Rom ke Langkasuka (dikatakan terletak di utara Malaysia) untuk berkahwin dengan seorang Puteri China yang cantik dari Dinasti Han.Bagaimanapun, puak lanun dari Geruda mempunyai perancangan yang berbeza. Mereka memutuskan untuk menculik Puteri China dan menjadikannya sebagai tebusan.Di hujung pengairan Selat Melaka, Merong Mahawangsa dan angkatannya diserang oleh Geruda.
Selepas itu aksi menuntu maruah bermula... hihi
Thanks KRU STUDIOS
comment pasal cite ni
Mangga Online
Utusan Online
Sinar Harian
Thursday, March 3, 2011
MFJ-269 - ANTENNA ANALYZER
Hari ini kita akan berkenalan dengan MFJ-269. :) kembar dia xsalah la MFJ-269Pro.
Kira adik-beradik dia MFJ-249B, MFJ-259B, MFJ-229, MFJ-269Pro dan lain-lain.
Kita kenal dulu apa yang ada dalam MFJ-269 ini.
Frequency Coverage 1.8-170, 415-450MHz HF,VFH,UHF
* Frequency Counter
* LCD readout
* SWR & impedance or SWR Bargraph
* Coaxial loss meter
* VSWR Meter
* Signal Generator
* Connectors: N-socket ( Ant) , BNC ( Counter)
* Supply: AA Cells or ext. 12V DC
* Accessories: N-type to SO-239 adaptor
Tudia banyak tol function MFJ-269. hihi.
Kira benda ini senang la nak buat keja-keja ini : test, adjust or measure
Apa tuu Test??Adjust??Measure??
Dengan benda alah ni kita boleh Test,Adjust,Measure, Antenna kita (kira antenna buat sendiri @ yang kita pi tunjuk huhu.) seperti SWR, impedance, reactance, resistance, resonant frequency, and bandwidth. Selalunya kita buat antenna kita test SWR ja kali ni kita boleh check semua sekali baru tepat@sempurna antenna kita. :)
Dengan benda ini kita boleh test swr ngn lebih pantas berbanding cara lama pakai radio n swr meter.
Dengan benda ini kita tak payah dah pakai radio terus ja test swr, swr tak cantik kita adjust terus, cara lama kita perlu tx radio pastu amik tgk swr, kalau swr tak cantik kita adjust antenna kita pastu tx guna radio itu pon kita tak tau antenna kita buat tu match kat frequency berapa. Ada benda alah ni dia siap bagi tau swr, frenquency yang match kat antenna kita buat. Senang la kerja nak tunning antenna. huhu. Yang buat yagi tuu nak tunning gama match ka t-match ka memang senang abis la.. hehe. (tambah2 kat hf)
Kira sapa nak buat balun, lc-ciruit, capacitor match dan sewaktu kawasan dengannya senang la.
Kira kita boleh buat ramuan antenna kita sendiri berdasarkan prinsip2 antenna. yeaahh.. malaysia boleh!!!
Pastu ada frenquecy counter. Kira frequency counter ni dia akan baca output frequency yang kuar dari radio kita. kadang2 kita tak tau betoi ka kt lcd radio tulis frequency 145.400mhz dan output pon serupa. pakai frequency counter ni kita boleh tau la betoi or x, kalau x tu radio anda da sakit la.. haha.. pastu bagi model radio yang takdak display boleh la tau radio tu duk kat frequency mana hf,vhf,uhf ka.... senang kan.. haha
Coax loss ada gak function dalam ni. sebenarnya lagi panjang wayar antenna kita lagi banyak loss. dengan benda alah ni kita leh check la berapa kita loss ngan itu kita leh tau la wayar@cable antenna yang layak kita pakai panjang dia dan power tx yang nak dipakai.
Display dia pakai LCD senang la nk baca apa dia tulis, nak baca guna jarum 2 susah la sikit nak terjemah apa dia tunjuk 2.. hahaha....
huhu.. banyak sungguh pergunaanya. kira guna benda alah ni kita lebih faham, faham apabila anda berkesempatan menggunakannya.. bila nak tune gama match, balun, nk potong antenna nak bagi cun dan sewaktu dengannya.. dengan erti kata lain "memudahkan" sahaja.
harga dia??? cek pon tak tau la. p la check kt pakcik google or makcik yahoo.. hihi
Ok cukup la kot... 73
note: benda ini=benda alah=MFJ269
sharing is caring.. hehe
Kira adik-beradik dia MFJ-249B, MFJ-259B, MFJ-229, MFJ-269Pro dan lain-lain.
Kita kenal dulu apa yang ada dalam MFJ-269 ini.
Frequency Coverage 1.8-170, 415-450MHz HF,VFH,UHF
* Frequency Counter
* LCD readout
* SWR & impedance or SWR Bargraph
* Coaxial loss meter
* VSWR Meter
* Signal Generator
* Connectors: N-socket ( Ant) , BNC ( Counter)
* Supply: AA Cells or ext. 12V DC
* Accessories: N-type to SO-239 adaptor
Tudia banyak tol function MFJ-269. hihi.
Kira benda ini senang la nak buat keja-keja ini : test, adjust or measure
Apa tuu Test??Adjust??Measure??
Dengan benda alah ni kita boleh Test,Adjust,Measure, Antenna kita (kira antenna buat sendiri @ yang kita pi tunjuk huhu.) seperti SWR, impedance, reactance, resistance, resonant frequency, and bandwidth. Selalunya kita buat antenna kita test SWR ja kali ni kita boleh check semua sekali baru tepat@sempurna antenna kita. :)
Dengan benda ini kita boleh test swr ngn lebih pantas berbanding cara lama pakai radio n swr meter.
Dengan benda ini kita tak payah dah pakai radio terus ja test swr, swr tak cantik kita adjust terus, cara lama kita perlu tx radio pastu amik tgk swr, kalau swr tak cantik kita adjust antenna kita pastu tx guna radio itu pon kita tak tau antenna kita buat tu match kat frequency berapa. Ada benda alah ni dia siap bagi tau swr, frenquency yang match kat antenna kita buat. Senang la kerja nak tunning antenna. huhu. Yang buat yagi tuu nak tunning gama match ka t-match ka memang senang abis la.. hehe. (tambah2 kat hf)
Kira sapa nak buat balun, lc-ciruit, capacitor match dan sewaktu kawasan dengannya senang la.
Kira kita boleh buat ramuan antenna kita sendiri berdasarkan prinsip2 antenna. yeaahh.. malaysia boleh!!!
Pastu ada frenquecy counter. Kira frequency counter ni dia akan baca output frequency yang kuar dari radio kita. kadang2 kita tak tau betoi ka kt lcd radio tulis frequency 145.400mhz dan output pon serupa. pakai frequency counter ni kita boleh tau la betoi or x, kalau x tu radio anda da sakit la.. haha.. pastu bagi model radio yang takdak display boleh la tau radio tu duk kat frequency mana hf,vhf,uhf ka.... senang kan.. haha
Coax loss ada gak function dalam ni. sebenarnya lagi panjang wayar antenna kita lagi banyak loss. dengan benda alah ni kita leh check la berapa kita loss ngan itu kita leh tau la wayar@cable antenna yang layak kita pakai panjang dia dan power tx yang nak dipakai.
Display dia pakai LCD senang la nk baca apa dia tulis, nak baca guna jarum 2 susah la sikit nak terjemah apa dia tunjuk 2.. hahaha....
huhu.. banyak sungguh pergunaanya. kira guna benda alah ni kita lebih faham, faham apabila anda berkesempatan menggunakannya.. bila nak tune gama match, balun, nk potong antenna nak bagi cun dan sewaktu dengannya.. dengan erti kata lain "memudahkan" sahaja.
harga dia??? cek pon tak tau la. p la check kt pakcik google or makcik yahoo.. hihi
Ok cukup la kot... 73
note: benda ini=benda alah=MFJ269
sharing is caring.. hehe
Wednesday, March 2, 2011
Tuesday, March 1, 2011
9W2FLY @ Abang Zul
assalamualaikum... hehe
Ok ni nak promote rakan radio amatur iaitu 9W2FLY.
Sapa xkenai ngn callsign 9W2FLY leh kata terkenal gak la... toi x.
Abang Zul ni ada blog kalau hangpa semua nk tau la...
Menarik gak dan mcm2 info berguna terdapat dalam blog dia..
Gaya penulisan, ulasan dari gambaq yang dipaparkan memang sempoi la.
Blog Abang Zul kita : http://sejenakdiperjalananku.blogspot.com/
Pakat2 kita masuk na....
p/s: abang zul jagan mare ya nk promote ja... hehe
Ok ni nak promote rakan radio amatur iaitu 9W2FLY.
Sapa xkenai ngn callsign 9W2FLY leh kata terkenal gak la... toi x.
Abang Zul ni ada blog kalau hangpa semua nk tau la...
Menarik gak dan mcm2 info berguna terdapat dalam blog dia..
Gaya penulisan, ulasan dari gambaq yang dipaparkan memang sempoi la.
Blog Abang Zul kita : http://sejenakdiperjalananku.blogspot.com/
Pakat2 kita masuk na....
p/s: abang zul jagan mare ya nk promote ja... hehe
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