“In this video, I do a bit of wiring and then get on the air and make some contacts during a contest.”
The Raduino The new BITX40’s Raduino is an Arduino
Receiver The listen to the very clean, crisp and quite receiver. The front-end has a triple tuned circuit that cuts out-of-band signals. The diode ring mixer front-end makes this a crisp receiver
Transmitter 7 watts of low distortion SSB
Hackable
The BITX40 will inspire you to experiment. Modify it, mount it, tweak it, change it.
Raduino is a standard Arduino
The main board uses all analog large sized SMD components that are laid out on an easy to understand manner on a double sided board with broad tracks. This can be your main module around which you can start experimenting. There are jump-points from where you can add more modules like the DDS, more bands, better audio amplifier, etc. Imagination is your limit. You can separately increase the power amplifier’s supply voltage to 25 volts to be more than 20 watts of power : You will have to add a better heat sink. The mods are on the way!
The boards can be installed inside any box that you like. Make your own station rigs, man-packs, SOTA rigs, trail radio or mount it in a cigar box and leave it on your bedside table. Watch the instructions video.
Box Contents
We have tried to include connector/hardware you might possibly need to build a full radio. However, we also had to balance the shipping weight to keep the overall cost down. You will have to supply your own box, power supply and earphones/headphones/speaker.
- 4-1/2 inches by 5 inches tested SSB transceiver
module, covering any 400 KHz segment of the 7 MHz band
- The Raduino board with Si5351, Arduino Nano. Fully tested
- High quality BNC connector for the antenna
- Small electret microphone
- Two earphone style audio jacks for the mic and the earphones/speaker
- A set of DC power socket and plug
- Volume control with on/off switch
- 10k linear pot for tuning
- 8 Brass stand-offs with mounting nuts and bolts
- Connectors with wires for all connections on the board
* Note : A speaker is not included in the kit as earphones/headphones/speakers are easily available locally. No cabinet is included to save on the postage cost. Almost any box maybe used.
Manufacture
The BITX boards are hand assembled by a collective of women. Each of the toroids is hand wound. This provides these women with livelihood. The assembled boards are then DC checked a final RF check is performed to check the receiver’s sensitivity as well as transmitter’s output before being shipped. Each board is individually numbered.
About Us
HF Signals is founded by Ashhar Farhan, VU2ESE as a part of Paradigm E-commerce Pvt. Ltd to encourage people all over the world to get more active in amateur radio, analog electronics and self-learning. Building and modifying radios is a great education. Lack of access to elmers and and radio builders’ community, absence of test equipment : all impede the spread of homebrewing. With the BITX40, we hope to recover that ground and encourage more and more people to get on air, modify, experiment, build and learn. So, go head, make that mod you wanted to.
See more:http://www.hfsigs.com/
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