Bitx is an easily assembled ssb transceiver for all bands and for the Amateur Radio Operator-Hams, with very clean
performance.Hams can home-brew the QRP TCVR by Using ordinary electronic components.In Pic Bitx3C-SBL-1 40mt
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Bitx In Japan & Brazil
In the last two months there was a lot of interest developed by Japanese Hams for the Bitx Version 3 Kit, and a few kits were shipped. I would be anxious to have any updates and post them on CQ BITX
Our friend from Brazil Om Celso is a very keen home brewer and has already started his Bitx. I congratulate PY2FDX Celso from Brazil and posting some pictures which he has been kind in sending.
The Bitx3b/3c construction manual is being updated and will be available very soon, we are making some corrections to it, also some mods have been done on the exciter and pa for both versions.
The main mod being oscillation in PA caused by feedback. We have used a diode switching arrangement to cut of the RX antenna on Transmit, the mods were required on both exciter and pa board.
The new schematic for bitx3b/3c and pa can be download from this link.
We are selling our BITX metal case in various colors, these can be used for our
bitx models like bitx3b 3c etc, these are also good for bitx 40 smd.
Explained below is the method of how you can mount the bitx 40 smd
using our bitx3b case as below.
Place the bitx 40 pcb in center of the 4 holes which are actually meant for the
Now take a marker pen with a thin and long tip, and make circles inside
the pcb mounting holes and then make new 4 holes on all the 4 mounting holes with
a suitable drill. If you can not make holes yourself then ask a friend or seek professional help.
Mounting holes for BITX 40 board Mounting holes for BITX 40 board Screws secure on the brass spacers
In the second step we mount the bitx40 board on the brass stands and secure them with the nuts on
all four brass stands.
Bitx 40 board mounted on the bottom cover case
Bitx 40 board mounted on the bo…