tag:blogger.com,1999:blog-9071048343455395511.post3402034947736593582..comments2024-03-24T22:03:31.205+00:00Comments on Roger G3XBM's (Mainly) Amateur Radio Blog: Idea for a simple 10m WSPR transceiverRoger G3XBMhttp://www.blogger.com/profile/13673890140751539870noreply@blogger.comBlogger5125tag:blogger.com,1999:blog-9071048343455395511.post-46370532533346297692009-12-16T15:01:32.678+00:002009-12-16T15:01:32.678+00:00Thanks for the suggestions. I shall try to see if ...Thanks for the suggestions. I shall try to see if my 14.060 xtals will pull up a couple of kHz. This is the easiest approach I think. The idea of using a couple of xtals in a super-VXO to give me more pulling range is a good one.Roger G3XBMhttps://www.blogger.com/profile/13673890140751539870noreply@blogger.comtag:blogger.com,1999:blog-9071048343455395511.post-29795418681400119662009-12-16T15:01:32.174+00:002009-12-16T15:01:32.174+00:00This comment has been removed by the author.Roger G3XBMhttps://www.blogger.com/profile/13673890140751539870noreply@blogger.comtag:blogger.com,1999:blog-9071048343455395511.post-54467640738606019442009-12-16T14:09:36.916+00:002009-12-16T14:09:36.916+00:00I should have added that the 14.060MHz crystal in ...I should have added that the 14.060MHz crystal in my QRP Kits DC20B and the one I bought as a replacement in a pack of QRP crystals on eBay both oscillate at about 14.062MHz in the DC20B circuit, which has been a source of frustration. I have just checked and it is currently on about 14.062.630KHz. I can definitely pull it until I hear a 1.5KHz tone with the RX in USB and tuned to 28.124.60. I could send you the other one but it has very short leads having been mounted on a PCB - drop me an email with your address if you want it.Anonymoushttps://www.blogger.com/profile/11984840704237681015noreply@blogger.comtag:blogger.com,1999:blog-9071048343455395511.post-69391411600122406522009-12-16T14:00:31.975+00:002009-12-16T14:00:31.975+00:00I would double a 14.060 MHz XTAL and either pull i...I would double a 14.060 MHz XTAL and either pull it +2.3 kHz (in case use a Super-VXO) or play with WSPR 2.0 "BFO" setting.<br /><br />The latter will move down/upwards the RX frequency window, while the TX frequency can be manually set outside the usual 200 Hz window in the proper main window field.<br /><br />There's already a WSPR DSB signal on 30m, but I'm sure you already know who he is, HI.Paolohttps://www.blogger.com/profile/15102621371527878145noreply@blogger.comtag:blogger.com,1999:blog-9071048343455395511.post-67128134391580295842009-12-16T13:44:10.609+00:002009-12-16T13:44:10.609+00:00I get the impression that most people who are not ...I get the impression that most people who are not using programmable oscillators are using a PIC chip preprogrammed with the table of frequency shifts to VXO a crystal. Either approach would avoid wasting half the power by radiating a redundant signal, and you wouldn't need a computer to generate audio either.Anonymoushttps://www.blogger.com/profile/11984840704237681015noreply@blogger.com