Podcasting since 2005! Listen to Latest SolderSmoke

Saturday, October 8, 2016

Update on Farhan's BITX 40 Module

It is truly a thing of beauty:  http://www.hfsigs.com/   

The boards come assembled (as seen above).  You can then add peripherals and modify away.  It is "hackable."


The BITX40 will inspire you to experiment. Modify it, mount it, tweak it, change it.
The PCB 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 board can be installed inside any box that you like. Make your own station rigs, man-packs, trail radios or mount it in a cigar box and leave it on your bedside table. The tuning capacitor has been replaced by a varactor tuning so you can place the tuning knob anywhere as it only carries a DC voltage.

Farhan writes:

For the last few months we have been working bringing low cost, tested SSB boards. Finally they are here. Priced at Rs.2200 At the moment, they are available only in India until we sort out an inexpensive way to post them to other countries. Visit www.hfsigs.com and pick up one!

The BITX40v3 is a complete 7 MHz SSB transceiver on a board that puts out 5 watts of clean audio and it has a very crisp, all analog receiver. It is based on the popular BITX circuit. It is a high quality double side, PTH PCBs with machine assembled SMD components, hand wound coils and each of them is individually tested. All the connectors and wires needed are included in the kit.


  1. Why does that look so much prettier than mine? :-)

  2. Why does that look so much prettier than mine? :-)

  3. Because it's Farhan, and a community effort; note the 'we' above. As I recall the back-story (yes, it's been a while, 'gestating') the production team is largely home craftspeople.

  4. ...$36?! is that right? if so that's the best deal in ham radio

  5. This looks too good to pass up. I just noticed that thay are now available world wide so have ordered one. Just go to wait now for it to arrive.

  6. hello - can someone help me with the IF offset. Have a bitx40 and a vfo/si5153 from qrp labs. All is working except for me being able to determine the if offet

  7. Does anyone know what's up with the bitx40?
    Unable to order. A notice to check back in 24 hours is posted on the "Buy" page. That's been up for several days.

    1. They are available now. they went to include a digital vfo lcd screen. cost is $59 (US)


Designer: Douglas Bowman | Dimodifikasi oleh Abdul Munir Original Posting Rounders 3 Column