tag:blogger.com,1999:blog-9071048343455395511.post5830344197571855923..comments2024-03-16T16:06:49.744+00:00Comments on Roger G3XBM's (Mainly) Amateur Radio Blog: WISPY TX gets better (and even cheaper!)Roger G3XBMhttp://www.blogger.com/profile/13673890140751539870noreply@blogger.comBlogger3125tag:blogger.com,1999:blog-9071048343455395511.post-72222787683445452972012-09-12T07:10:53.822+01:002012-09-12T07:10:53.822+01:00Mmm, very interesting. I recently bought qty 100 2...Mmm, very interesting. I recently bought qty 100 2N3904 on ebay for $2,50 <br />:-)<br />Rgds<br />RonAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-9071048343455395511.post-69534468020242244372012-09-11T21:26:22.668+01:002012-09-11T21:26:22.668+01:00Yes to both I think Ron. the change to Ge diodes m...Yes to both I think Ron. the change to Ge diodes made a world of difference on TX. On RX they would need less drive, so must be a "good idea".<br /><br />Yes, I think one can add 2N3904s ad infinitum in the (low cost) PA. It certainly makes for a low cost design!<br /><br />73s<br />Roger G3XBMRoger G3XBMhttps://www.blogger.com/profile/13673890140751539870noreply@blogger.comtag:blogger.com,1999:blog-9071048343455395511.post-85912111626621918352012-09-11T21:15:36.319+01:002012-09-11T21:15:36.319+01:00Two ideas;
Would using Ge-diodes in the receivers ...Two ideas;<br />Would using Ge-diodes in the receivers Poljakov mixer have advantages as well. Would using more 2N3904 paralelled in the PA (e.g. qty 4) be possible.<br />Good luck<br />Ron PA2RFAnonymousnoreply@blogger.com