Wednesday, 8 September 2010

Back Pack Radio transmitter civil version. (manpack radio)

Bravo sierra base, this is mike mobile 8, do you read me...over...
One off model Q-Mac backpack transmitter made in Australia, its very simple and user friendly.
I have one when i was still join at one off UN agency in Aceh....
This transmitter only 50 watt power with battery pack and you can send sell call to different brand like Codan Transmitter.

Thursday, 2 September 2010

1 Watt simple FM transmitter for nice broadcast

October 2009 years ago, I bought one set kit FM transmitter with encoder stereo.I have planning to install at my old FM .Here is the pictures.Only IDR 700.000/set (TX and encoder stereo)



My Old Homebrew 3,0 Mc to 3,8 Mc Final Tube 807's

when I was in high school, I like to assemble a radio transmitter with the electronic tube in 1984 - 1987
The frequency working from 3.0 Mc to 3,8 Mc.I'm loved my homebrew.Now I put the transmitter is no longer, because I do not have enough time, but still I keep it, probably because at that time to assemble, I was forced to work part time to buy a rather expensive components.
I used open dipole 1/2 lambda antenna.Its good working for 1000km distance.

73 88 cherio
YC6CIT/Batara siwa

First model
 Oscillator Tube 6V6 coolpits
 Buffer 6L6
 Final 2 x 807
 with pi section filter antenna system.
Voice DSB
Power 125 watt






My second model

Oscillator 12BY7 with coolpits I put under chasing.
Buffer 6L6
Final 2 x 807 with Coil Induction Antenna
Sometime I change the tube with 6146 RCA.Socket still use 807 but I made socket adapter .
Transformer PT 300, 600V CT




Sunday, 1 August 2010

Install HF trannsmitter (codan) at Fishing boat Simeulu Island, Indonesia

When I'm working at Care International Indonesi (CII) in 2005,I go to simeulu Island after earth quake and tsunami. Care rental fishing boat for logistics supply to teluk dalam, because the road is damage.
in this emergency situation, many people at teluk dalam don't have foods and water. .

The radio must installing at the boat, because mobile phone is not functions.