Posted here are some pictures of my second built Bitx3B this one is with agc working. The earlier agc pcb had to be modified. The present agc/s.meter pcb mounts on the vu meter.

Bitx Ver 3 B RX demo

Some more new videos of Bitx Ver 3 B in receive mode.

Bitx Version 3 B Demo 3

Bitx Version 3 B Demo 2

Bitx Version 3 B SSB TCVR . Demo of RX

Here is a video i took last night for the Bitx Version 3 B in receive mode.

I have taken some more videos which i will post soon.

The receiver is quite sensitive and the VFO is quite stable.  Since it is a var actor VFO i am quite satisfied with its stability .  The maximum drift i observed in 12 to 15 hours not more then 50 to max 100 hertz in a period of 12  to 15 hours time.

More news of Bitx Version 3 coming soon.

Pictures of Working Bitx Ver 3B

It is a pleasure to present  pictures for a complete working Bitx B . 

The Bitx Ver 3B has not been put on sale as yet, although i have sold 3 sets on request.

Two radio amateurs are building the set but are facing some problem in their sets audio.

I will also upload a video very soon giving a live demo of the working Bitx Ver3B in receive and a modulation test on a dummy load and swr bridge and modulation monitored on a commercial receiver.


The Bitx Ver 3 B has some changes that were made to make it much more convenient for operational use.

The changes were.

1. Stable VFO  drift with in 50 to 100 hertz   in time span of few hours

2. Mic Preamp so that there no need to shout in the mic.. hi hi

3. FLL Freq counter connectivity with a buffer added in the vfo

4. Aluminum case

5. Mic PTT and Speaker

                                  PICTURES OF BITX VERSION 3 B