tag:blogger.com,1999:blog-7590176649168185428.post3497047339868391358..comments2024-03-28T08:01:27.111-04:00Comments on SolderSmoke Daily News: Building the Ceramic Direct Conversion Receiver Part 2 -- Building the VFO -- Our Goal is JOVO!Bill Mearahttp://www.blogger.com/profile/07662500663603350847noreply@blogger.comBlogger9125tag:blogger.com,1999:blog-7590176649168185428.post-62283906454870239562018-04-10T05:32:14.986-04:002018-04-10T05:32:14.986-04:00Gaz: I think I put a 7 volt Zener in there. Someth...Gaz: I think I put a 7 volt Zener in there. Something like that. As for the FET I had a 2N3819 but an MPF102 would probably work also. I need to put a "how to build the front end" post on the blog. Thanks for reminding me. How is your project coming along? 73 BillBill Mearahttps://www.blogger.com/profile/07662500663603350847noreply@blogger.comtag:blogger.com,1999:blog-7590176649168185428.post-20364472693295194522018-04-10T05:30:12.922-04:002018-04-10T05:30:12.922-04:00Gaz: I think I put a 7 volt Zener in there. Someth...Gaz: I think I put a 7 volt Zener in there. Something like that. As for the FET I had a 2N3819 but an MPF102 would probably work also. I need to put a "how to build the front end" post on the blog. Thanks for reminding me. How is your project coming along? 73 Bill Bill Mearahttps://www.blogger.com/profile/07662500663603350847noreply@blogger.comtag:blogger.com,1999:blog-7590176649168185428.post-86975435697142168672018-04-09T09:16:19.307-04:002018-04-09T09:16:19.307-04:00Hi Bill, what zenner did you use? what was the jfe...Hi Bill, what zenner did you use? what was the jfet in the first stage??<br />GazTheGazlabhttps://www.blogger.com/profile/15224318258595035481noreply@blogger.comtag:blogger.com,1999:blog-7590176649168185428.post-48206052215333291452017-12-22T13:59:33.743-05:002017-12-22T13:59:33.743-05:00Awesome! Useful power transformers in the solid-s...Awesome! Useful power transformers in the solid-state ones, too.<br /><br />73 and Merry Christmas!<br /><br />Steve N8NMN8NMhttps://www.blogger.com/profile/00670056747080667518noreply@blogger.comtag:blogger.com,1999:blog-7590176649168185428.post-19758424768202513192017-12-20T17:45:43.236-05:002017-12-20T17:45:43.236-05:00Very nice Bill. Many thanks. It helps immensely....Very nice Bill. Many thanks. It helps immensely. <br /><br />N8NM... Great advice. As a new/wannabe homebrewer my kids and I have been tearing apart nearly every broken or cheap electronic item we can get. We made out like bandits on black Friday.. Picked up several of the older clock radios over half off at second hand stores. Have a handful of trimmer caps and polyvaricons, I just need to figure out how to measure them. <br /><br />Merry Christmas to all! John KE5ETXnoreply@blogger.comtag:blogger.com,1999:blog-7590176649168185428.post-46411002732814571172017-12-18T14:13:47.982-05:002017-12-18T14:13:47.982-05:00Great post, Bill!
Our hobby has a proud tradition...Great post, Bill!<br /><br />Our hobby has a proud tradition of scrounging and scavenging parts that newcomers may not know about. Don't overlook those $1 garage-sale clock-radios; they've probably got at least a tuning capacitor that can be salvaged.<br /><br />N8NMhttps://www.blogger.com/profile/00670056747080667518noreply@blogger.comtag:blogger.com,1999:blog-7590176649168185428.post-52777317587154833722017-12-17T21:27:34.071-05:002017-12-17T21:27:34.071-05:00Excellent suggestion Josh. I think 4SQRP had a va...Excellent suggestion Josh. I think 4SQRP had a variable inductor kit. That would make it a permeability-tuned ceramic oscillator. FB! Bill Mearahttps://www.blogger.com/profile/07662500663603350847noreply@blogger.comtag:blogger.com,1999:blog-7590176649168185428.post-42864696697824473532017-12-17T21:27:20.860-05:002017-12-17T21:27:20.860-05:00Excellent suggestion Josh. I think 4SQRP had a va...Excellent suggestion Josh. I think 4SQRP had a variable inductor kit. That would make it a permeability-tuned ceramic oscillator. FB! Bill Mearahttps://www.blogger.com/profile/07662500663603350847noreply@blogger.comtag:blogger.com,1999:blog-7590176649168185428.post-75685220791903490912017-12-17T18:22:45.895-05:002017-12-17T18:22:45.895-05:00Hi Bill,
Another great post!
A suggestion for th...Hi Bill,<br /><br />Another great post!<br /><br />A suggestion for the adventurous reader: you can also vary the frequency of the oscillator by varying the inductor in series with the resonator (a modification of Option 2). This was somewhat common in older mechanical oscillators - I'm partial to it as it was used in several old Drake radios...<br /><br />Anyway, FB. I love the EMRFD-style (stage-by-stage) way you're approaching this project.<br /><br />Josh, KB8NYPJosh, KB8NYPhttps://www.blogger.com/profile/13459755483225184857noreply@blogger.com