<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"></head><body dir="auto"><div dir="auto">International Crystal made several different little modules. Crystal oscillators, mixers, amplifiers.</div><div dir="auto"><br></div><div dir="auto">I'd need to look through some old QST archives to find their offerings.</div><div dir="auto"><br></div><div dir="auto">Joe</div><div dir="auto"><br></div><div dir="auto"><br></div><div id="composer_signature" dir="auto"><div style="font-size:85%;color:#575757" dir="auto">Sent from my T-Mobile 4G LTE Device</div></div><div dir="auto"><br></div><div><br></div><div align="left" dir="auto" style="font-size:100%;color:#000000"><div>-------- Original message --------</div><div>From: Michael Chisena via Tacos <tacos@amrad.org> </div><div>Date: 2/28/21 20:15 (GMT-07:00) </div><div>To: tacos AMRAD <tacos@amrad.org> </div><div>Subject: question based on a dim memory and some updates </div><div><br></div></div><br>Hi all,<br>The question.<br><br>In the old, and Im talking 60's or 70's ham magazines there was a vendor that sold little modules that could be hooked up to product various items.<br>Individually not too complex but string enough of them together and you can make basic projects out of them.<br><br>Any idea of what they are called? Product names, vendors, data along that line.<br>Schematics of the various modules?<br><br>Given all the neat modules on places like Amazon, was wondering if this could be a product again.<br><br>One of my x bosses made a converter module that took an ordinary vehicle AM/FM and turned it into a multi mode AM stereo receiver with pilot detection.<br><br>Been working on some projects.<br><br>This is my second batch of Type 538 camera batteries as a work in progress.<br>https://imgur.com/gallery/dVlXKHK<br><br>Been playing with an idea of making a power bank for a laptop I have here. <br>It would use hot swapable power tool batteries.<br>So far the prototype has been kinda neat.<br><br>Share a thought as time permits.<br>Thanks in advance.<br>Mike<br><br><br>Michael F. Chisena KA2ZEV@Yahoo.com Notice the new phone number..... 703 344 8864<br>"You are, what you do, when it counts" The Masso<br>_______________________________________________<br>Tacos mailing list<br>Tacos@amrad.org<br>https://lists.amrad.org/mailman/listinfo/tacos<br></body></html>