tag:blogger.com,1999:blog-7590176649168185428.post5926803698041350586..comments2024-03-28T18:51:21.655-04:00Comments on SolderSmoke Daily News: The Slaughter of Inductors, Capacitors, and Crystals Continues... Bill Mearahttp://www.blogger.com/profile/07662500663603350847noreply@blogger.comBlogger4125tag:blogger.com,1999:blog-7590176649168185428.post-83588262808841357812015-04-10T16:47:23.036-04:002015-04-10T16:47:23.036-04:00Bill - I'm more a 300 Hz - 3kHz guy than ESSB....Bill - I'm more a 300 Hz - 3kHz guy than ESSB. Pat Hawker discussed optimum SSB frequency ranges in the early days and concluded that was about optimum. Though I don't mind a bit of boost around 1 - 2 kHz with QRP rigs. <br /><br />If you've got an Android phone I highly recommend downloading the free FrequenSee audio spectrum analyser app. <br /><br />Then hold it against your speaker while listening to Pete's video at https://www.youtube.com/watch?v=UHBLnjwpPCo<br /><br />Notice that there's almost no audio below 900Hz but a large spike around 2kHz. <br /><br />In contrast my BitX still has that spike but it's more gentle with significant audio energy down to below 500 Hz. Eg https://www.youtube.com/watch?v=pB1IC2qRw6g<br /><br />The Beach 40, with no crystal filtering, is flatter again. https://www.youtube.com/watch?v=6AuAVv6gQU0 Peter Parkerhttps://www.blogger.com/profile/13413976934040474125noreply@blogger.comtag:blogger.com,1999:blog-7590176649168185428.post-28530262059629468262015-04-09T18:41:55.525-04:002015-04-09T18:41:55.525-04:00Wow Peter! You are an ESSB guy now! Wow Peter! You are an ESSB guy now! Bill Mearahttps://www.blogger.com/profile/07662500663603350847noreply@blogger.comtag:blogger.com,1999:blog-7590176649168185428.post-22955753103577496882015-04-09T15:43:04.892-04:002015-04-09T15:43:04.892-04:00I hear a carrier oscillator that needs moving 200 ...I hear a carrier oscillator that needs moving 200 - 300 Hz nearer the suppressed carrier, an xtal filter that needs widening or audio coupling capacitors that need increasing for better low frequency response ;) Peter Parkerhttps://www.blogger.com/profile/13413976934040474125noreply@blogger.comtag:blogger.com,1999:blog-7590176649168185428.post-72296418723086839062015-04-09T15:41:24.113-04:002015-04-09T15:41:24.113-04:00This comment has been removed by the author.Peter Parkerhttps://www.blogger.com/profile/13413976934040474125noreply@blogger.com