Bob, The Ht-40 used a neon indicator for over modulation announcement --- I believe it was the K level schematic. Also, there were numerous audio changes made. Kindest regards Jim K9AXN
----- Original Message ----- From: "rbethman" <[email protected]> To: "Discussion of AM Radio in the Amateur Service" <[email protected]> Sent: Friday, July 02, 2010 5:22 PM Subject: Re: [AMRadio] DX 60 mods > Jim - The HT-40 came out before zeners and leds unless I'm really out > in left field. > > Bill Breshears', WC3K, modification used those components to give an > over modulation "indicator" to adjust the mic gain with, and allow the > operator to run with a clean signal. Circa 1999 - 2002. > > Bob - N0DGN > > On 7/2/2010 5:55 PM, james.liles wrote: >> Hi Bob: >> I believe that over mod detection change originated in the latest version >> of >> the Hallicrafters HT-40. Look at the latest schematic and you will see >> some >> very effective modulation changes to that radio. >> Kindest regards Jim K9AXN > > ______________________________________________________________ > Our Main Website: http://www.amfone.net > AMRadio mailing list > Searchable Archives: http://www.mail-archive.com/[email protected]/ > List Rules (must read!): http://w5ami.net/amradiofaq.html > List Home: http://mailman.qth.net/mailman/listinfo/amradio > Post: [email protected] > To unsubscribe, send an email to [email protected] with > the word unsubscribe in the message body. > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/[email protected]/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: [email protected] To unsubscribe, send an email to [email protected] with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
