Change your voice/audio

Salam to all,

Well....it is been a long time i'm not made any posting and updating on any of my projects or :) curiousity. After PRU12, i was a bit busy attending courses at KUB.COM and this is cumpulsory for a staff Telekom like me. Wow, technologies nowadays made me impressed....you all had witnesses that by using Yahoo Messenger u would able to communicate and talk freely without worrying a telephone bills.. ...well.....this is call technology innovatives.

But we are still holding and sticked to amateur radio as we do realize that without knowing basic telecommunication , we will not able to understand further ....

Lately, i was very happy that a lot of ham member were truly made a fun of their voice thru air...the echo sound made them very special and it is to show that....we are not a common ham members but learning something by doing an electronic circuits connected to their HT or RIG and heard your own audio sounds funny will encourage themselves to learn more and more.

Even if you do not know what is resistor and how it looks like, but believe me....by doing a simple electronics project will make them know better...:)...

Voice Changer using computer software

My first intention was to develop a voice changer electronic circuits which will change your audio to vibrato, echo , robot and pitch effects. But its hard for me to find 'IC WIN8072' which are important component to make the circuit function. Try to find at Jalan Pasar but u know....they even never heard of it. Well....jeng..jeng..jeng...if i couldn't find it ...why not i try it using software...more function and more cheaper. I've tested and it works fine. These are the step i would like to share:

1) Know your RJ12 pin for MIC,PTT and GND. (Yaesy FT8800 - Pin 4/GND,Pin6/PTT,Pin5/MIC)

2) Surf this website to develop electronic diagram from your PC to Radio (Refer Circuit 1)
http://www.eqso.org/faq/ptt-Interface-Circuits.htm this is to control your MIC sensitivity.

3) Download and install http://funny-voice.en.softonic.com/ (u may try other software- no harm)

For me it was very simple.....but my advice is...do learn the component well because some of it do have a polarity +ve and -ve....be aware of it or the end results may disappointed u. Okey...good luck and have fun.

Science is fun, so with the electronics. :)


For reference if u're using it. (Click Below)
http://www.datasheet4u.com/html/W/I/N/WIN8072_Winlead.pdf.html

Thanks for 9W2MZY for gives me a hope to get those IC WIN8072. If u found it....call me yahhh.

Antenna Analyser

Salam buat semua,

Malam tadi (5/2/08)agak menarik perbincangan di simplex V17 dimana topik perbualan berkisar mengenai 'Antenna Analyser'. Walaupun perbincangan agak lewat menghampiri tengah malam tetapi keseronokan menimba ilmu bukan mengira waktu. Terima kasih kepada 9M2RS (Hj.Rashid) ,9W2END (Firdaus), 9W2TPT (Hamid) yang sudi berkongsi pengetahuan.

Hasil dari perbincangan malam tadi, sedikit sebanyak saya memahami apakah kegunaan antenna analyser. Dari apa yang saya faham, kelebihannya agak banyak berbanding meter SWR biasa di mana salah satu fungsinya ia dapat mengukur 'Cable Losses', 'Distance to fault', 'Measure capacitance and inductance, ' Freq counter' dan sebagainya bergantung kepada pengeluar/manufacturer. Macam biasa, lagi banyak fungsi lagi mahal harganya. Apa yang menarik minat saya adalah kita tidak memerlukan tranceiver untuk menguji antena dimana 'Antenna Analyser' ini boleh beroperasi hanya dengan kuasa bateri dan bekalan kuasa dari luar. Pada pendapat saya kegunaannya mudah berbanding meter SWR biasa yang memerlukan power input untuk ujian.

Pada malam 6/2/08, kami iaitu 9W2TPT dan 9W2END telah eyeball dimana setiap perbincangan dari awal jam 10 mlm sehingga lewat jam 12 tgh malam adalah berkisar mengenai teknikal ham radio. Dalam masa yang sama juga 9w2TPT menjalankan demo mengenai fungsi 'Antenna Analyser MFJ-259' . Setelah diteliti memang sah, kegunaannya amat mudah sekali disamping mudah dibawah kemana sahaja.

Apa yang kita boleh dapati dari MFJ-259 ini adalah:

1. Resonan frekuensi antena anda


2. Tune/penalaan antena di atas tower tanpa perlu tranceiver dan menyaksikan perubahan SWR setiap kali melakukan penalaan.


3. Tune antena mobile HF dalam masa beberapa saat sahaja.


4. Ukur SWR antena


5. Ukur induktan, kapasitan, resonan frekuensi, transmission line faktor velositi/impedance/loss.


6. Uji RF chokes, transformer/alatubah dan balun.


7. Trim antena sehingga SWR 1.1 tanpa perlu lakukan QRM.

Terima kasih pada 9w2TPT kerana sudi berkongsi penggunaan antenna analyser MFJ-259 ini. Pada pendapat saya, peralatan seperti ini penting kerana selain dari pelbagai fungsi ianya juga dapat membantu kita melakukan penalaan yang optimum terhadap antena yang digunakan.