Discussion in 'QRP Corner' started by AE5X, Dec 10, 2017.
Thanks - I've bookmarked your page to follow the build.
I'll be most interested in how clean the output is for such a broadband rig.
Good idea - I'll bring it in to work after the build and put it on our spec-analyzer.
This is an updated version of the original uBITX, which you can build from plans here. This new design also has publicly available specs and you can build one yourself.
I just got one of Ashhar's BITX40 kits, which is a single-band transceiver. It's designed with a separate power rail for the PA, so technically you can increase the power by applying a higher voltage to the PA than the rest of the transceiver. I note that this new design has the same separate PA rail, and with two MOSFETs you can probably go well above 10W that way.
Thank you for posting this!
I've got a QCX arriving any day now, and adding one of these will have me all set up for fooling with digital modes portable. I stumbled into this design for a tuner: http://hfsignals.blogspot.com/2015/06/a-balanced-tuner.html
My thinking is putting all three and a battery system and a USB interface all in one black box in the style of a spy radio.
Very interesting, waiting to see how this kit takes off!
I just bought my Christmas present.
So IRF510's will work all the way up to 10m.... good to know .
Looks like a cute rig. It says general coverage RX, I wonder about TX?
TX is general coverage too but low-pass filters on output favor ham bands.
I ordered one yesterday (Christmas present to myself!). Looks like it'll be a fun project.