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kc2orw
08-26-2007, 11:51 AM
I can thank N2RJ for pointing out the resource to me.
BitX-20 Transceiver
Now I don't plan on building one at the moment but I love the resourcefulness of some of the builders of this very nice transceiver.
Some of the alternate/optional modifications should prove very useful to my current SDR project which is still inactive due to some parts not getting here yet...

I needed a few VFO and Digital VFO ideas and some of them seem to be here, need adjustment for my needs but very doable.

Main page:
http://www.phonestack.com/farhan/bitx.html

Yahoo Group: (resourceful bunch great place for asking questions)
(Good links, mods, circuits, etc in the files sections)
http://groups.yahoo.com/group/BITX20/

A lot of mods I could use:
http://yb1zdx.arc.itb.ac.id/data/orari- ... ew/bitx20/ (http://yb1zdx.arc.itb.ac.id/data/orari-diklat/homebrew/bitx20/)

Well I am not sure if anyone here is interested but since I spent time locating some of these resources. I figured I should share them with any who might be interested or make some use of them. think of my post as a link Blog or something along those lines :D

N2RJ
08-26-2007, 11:54 AM
What I like about the design is that it uses readily available parts.

You can buy boards from FAR circuits if you're not interested in fabricating your own. It can also be built dead bug if you so desire.

btw, I got the 2 board SoftRock 20m kit yesterday. Can't wait to put it together. I'm going to wally world and get a drink warmer. I already stole/borrowed the xyl's embossing gun. :lol:

kc2orw
08-26-2007, 11:58 AM
What I like about the design is that it uses readily available parts.

You can buy boards from FAR circuits if you're not interested in fabricating your own. It can also be built dead bug if you so desire.
Yeah thats what I meant about the builders resourcefulness, cool stuff and good minds involved with this one. I hate to have to buy super specialized components for one off projects I like reusability, like open source software provides.

PS: I am probably going to use the dead bug approach as it fits the breadboard, test, and finalize approach I am contemplating. I figure breadboard is a close approximation of dead bug. so dead bug doesn't need to be messy just not PCB. If I get around to obtaining a proper nibbler I will eventually try Manhattan style.

kc2orw
09-11-2007, 05:50 PM
I ordered parts for the non smt SDR project mentioned in the first post within a day or two of the post. I just got them today man that is a pathetic turn around time. I knew I was in trouble when the email came back titled "Order Despached" ???

Well I got them but wow pathetic... sure they came from Bankok, yes didn't realize that one, billing Australia and sales office NYC (or so they claimed) I ordered from them before and didn't get such bad service but not this time???

Future Electronics not recommended by me I won't even put the url here it could accidentally get someone to think about using them. I guess back to mouser or digikey next time...

kc4umo
09-11-2007, 07:35 PM
Pretty nice design there. And the good thing about it, you can change just a few things and use another band. I wonder how this would work for multi band...

kc2orw
09-11-2007, 08:05 PM
Oops sorry I was so annoyed at how long it took for me to get parts that I posted in the wrong topic :oops:

Here is what I ordered parts for http://yu1lm.qrpradio.com/homebrew.htm actually there are several but they are related parts wise. Most use two 74HC4066 as part of a Tayloe detector and as the modulation circuit in a transmitter...

I did like this BitX-20 Transceiver it may be another on my list of todos there were other ideas on those pages that I might incorporate into the SDR I am building. Read through the BitX pages there are a lot of great pragmatic building and construction techniques and ideas there.