Homebrewing the much talked about bitx20 from india and is being sold worldwide as a kit by om sunilthe radio was originally designed by om farhan and later improved by om rahul, vu3wjm to. The bitx40 is a variant of ashar farhans vu2ese original bitx20 design. Note that the group is named bitx20 after previous versions of the bitx. Im sure youre incredibly busy, and the v3 boards are ancient history at this point. The bitx20 was originally designed by ashar farhan vu3icq, and the aim was to use common, low cost parts.
Pcb creator is convenient for both simple and complex projects. Bitx20 a bidirectional ssb transceiver bitx is an easily assembled transceiver for the beginner with very clean performance. At the hamfest india 2014 conducted on 7th and 8th november 2014 at hyderbad, a pcb of bitx40 transceiver was distributed free as a part of the welcome kit. Top 4 download periodically updates software information of pcb creator 2. Dan tayloe, jim kortge and arv evans designed a pcb version was stable and would meet united states f. Hams can homebrew the qrp tcvr by using ordinary electronic components.
That transceiver has been built and used by many hams worldwide with great success. All kind of information about the qrp transceiver bitx 20 homebrew. On the pcb, there are jumpers between t lines and r lines across the ladder filter. Since july 2008 i have been posting about my amateur radio activities including bitx20, mkars80, jota, sota, krmnpa, wia, arv and a few. The board can be broken into sections and then built and tested one section at a time. Pcb creator is a free, pcb layout and schematic capture software for both commercial and nonprofit purposes. The bitx20a by hendricks qrp kits is a pcb realization. There is a jumper from the bfo supply to the vfo supply.
Hendricks qrp kits bitx20a assembly manual 27 october 2007 the bitx20 idea originated with a transceiver designed by ashar farhan vu3icq that was intended to be easy to build from surplus and salvage components. This group exists for constructors of the various bitx projects, to discuss all aspects of the design and construction including problems, components, modifications and experiences using the rigs. We strive to be the best pcb manufacturing company with our exceptional quickturn options and outstanding pcb prototyping service. A new batch of bitx pcb, in glass epoxy,masked, roller tinned and with component placement is in ready stock for delivery worldwide. Ham news june july 2004 page 1 bitx20 a bidirectional. The bitx 40 smd pcb will be very well placed on the bottom case with ample space from all 4 sides of the case. One is receive signal path, the other is transmit signal path. First part of the bitx20 pcb is ready, the band pass filter. I spent a good day mapping trace by trace, node by node but still some node connections wouldnt make sense. Via styles help to organize work with through and blindburied vias. Not really a true s meter as it is connected to the audio outputa vu meter is more appropriate as the plate of the meter stateslooks good though for a homebrew radioi will put a small 12v. Since the schematic for the bitx is available, you might find it a fun exercise as a budding ee to take the schematic and turn it into a board yourself, or just build one on pcb using your construction technique of choice dead bug, manhattan, etc. The bitx20 idea originated with a transceiver designed by ashar.
This kit is based on an original bitx20 design by farhan. The idea was a simple design for a low cost easy to build ssb transceiver. With the raduino, there is no drift, which is a big improvement from the old analog model of the bitx, and makes the user experience much better. Somewhere in the time period 20032004 an ingenious ham from india, ashar farhan vu2ese, came up with a revolutionary concept. Bitx is an easily assembled ssb transceiver for all bands and for the amateur radio operatorhams, with very clean performance. The knobs can be changed if you have more colorful ones. G6lbq multiband bitx manual amplifier operational amplifier. This will make troubleshooting easier as any problems will be confined to one small section. Each builder may have hisher own way of organizing parts, but if you do not, you might try. I have a pcb board that is a little involved to figure out its working. Nets are divided by net classes with userdefined parameters and classtoclass rules.
The kit includes a commercial quality plated through, silkscreened, solder masked board, and all board mounted parts. Workbench autodesk eagle board layout tutorial with kf7ijz, kj6vu, w6kwf, and. Bitx20 bitx40 schematic i received my bitx40 about a month ago and am planning on making it a winter project. There are two pdf files in the files section of groups. Hendricks qrp kits bitx20a ssb transceiver assembly. Bitx is an easily assembled transceiver for the beginner. After building a far circuits bitx20 and a hendrickss qrp kits bitx20a kit, i decided to build another bitx after seeing this posting.
Also available is the pcb for avala 01 sdr monoband tcvr. The panel is available from qrp labs as a blank panel. What is a bitx a 6 watt ssb transceiver for 20m designed by farhan vu2ese an international discussion group with approximately 2000 active members homebrewed qrp transceivers for several bands kitbuilt qrp transceivers for several bands and configurations fun to build, and fun to operate, qrp ssb singleband transceiver. The first 2 way qso using the bitx20 was with wes, w4wel in north carolina. Multiband bitx pcb from sunil lakhani note the pcb is perfectly.
How to make amplifier class a stereo 2sc5200 use old computer power supply duration. Bitx is perhaps best known for their debit card, which is a definite convenience for those using the product. The transceiver itself is an indianassembled pcb with an updated circuit using a 12 mhz if, varicap tuning, and large surfacemount components for easy modification. I would purchasea set of ver 3 if the price was reasonable. Hi bitxers, i would like to know if i can obtain readymade bitx20 ver. This would mean that radio amateurs in poorer countries could build a working ssb transceiver and work the world on 20m. Hf signals has rolled out the new r4 version of the pcbs. Hfi 2014 bitx40 design everything you want to know. Now you have a convenient plugin point for your redgreen led. Dc lead is also provided for connecting power to the transceiver. Here are some photos of my build of the bitx40 transceiver rear panel antenna, mic wired for kenwoodalinco, speaker, power. Building a bitx20 version 3 the board can be broken into sections and then built and tested one section at a time. We went back and forth a few time and then signed off. G6lbq multiband bitx manual free download as pdf file.
I know designers use software to reroute pcb traces, making them compact and planar, also render them hard to decipher. Thats 1500 miles using 4 watts and a low hanging dipole antenna. Alternatively, add an mv209 or 2109 in parallel with the one on. More than 40 million people use github to discover, fork, and contribute to over 100 million projects.1482 109 1304 1505 286 992 1416 1100 514 1434 25 382 248 1105 791 123 384 924 603 891 55 920 43 362 197 116 320 66 1125 640 1239