This is one of those projects that sort of just happened. First I built an Si5351/Arduino synthesizer with a small OLED I2C display (program by Thomas LA3PNA -- thanks Thomas). Tom Hall AK2B up in New York helped me get the Si5351 VFO and BFO going -- thanks Tom. Then, over the holidays I decided to build a rig of some sort around the Si5351. I started with a superhet receiver using an NE602 as the mixer and another as the product detector. I power the NE602 with an 8 volt regulator from W8NSA -- thanks Jim. I made a 4 crystal 11 MHz Cohn filter using crystals left over from a BITX project. The software from AADE helped me design the matching networks to match the filter to the 1500 ohm impedances of the NE602s. I built the circuits on a milled board sent to me by Pete Juliano N6QW -- thanks Pete! I put a dual tuned circuit at the front end, going into a MOSFET RF amplifier. For audio amp I have an LM386. The whole thing is screwed down to a barbeque grilling plank from Whole Foods -- thanks Whole Foods! (This seems appropriate -- the "O" in OLED is for "Organic"!) It sounds nice. I may eventually try to put some relays in to switch the NE602s and the filter around to make this a transceiver.
In response to popular demand, "SolderSmoke -- Global Adventures in Wireless Electronics" is now available as an e-book for Amazon's Kindle.
Here's the site:
For the print version:
For shipping from a printer in the U.S. (probably better for N. American buyers) Click here: SolderSmoke USA Version
For shipping from a printer in the UK, Spain, or the USA (probably better for UK and other European buyers)
Click here: SolderSmoke EU Version
The two versions are identical, except for a minor difference in the paper used. That's why the prices are a bit different.
Bill's OTHER Book (Warning: Not About Radio)
Click on the image to learn more
W4HBK's QRSS Grabber: The Amazing Pensacola Snapper (Live!)