Thanks, Jim. 73, Ed Richards K6UUZ AMI member #1534
On Sun, 6 Mar 2005 17:02:06 -0600 "Jim candela" <[EMAIL PROTECTED]> writes: > > Another alternative is series modulation. This has efficiency issues > using a > class A series modulator, but for low power AM this might be the > ticket. > At the following link are two circuits that I found somewhere, and > am just > passing them on. I never tried them. > > Regards, > Jim > WD5JKO > > http://pages.prodigy.net/jcandela/Modulator/ > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] Behalf Of [EMAIL PROTECTED] > Sent: Sunday, March 06, 2005 4:00 PM > To: [EMAIL PROTECTED]; [email protected] > Subject: Re: [AMRadio] anyone for qrp am? > > > > In a message dated 3/6/05 1:40:13 PM, [EMAIL PROTECTED] writes: > > > > I, also,would like to build a QRP AM rig. I have the 6L6's and > 1625's. > > What I need is a modulation trandformer. Any suggestions, anyone? > Thanks. > > > > For a plate modulator that works great and does not require a > hard-to-find > transformer try the circuit described by Dale Hileman in the April > 1955 > issue > of Radio and Television news. Heising circuit with a clever bias > shifting > scheme included. Hileman called it a "Reference Shift" modulator. > Circuit > revisited in ER #91, November 1996 with some updates for using > several > popular > sweep tubes in place of the 807 originally employed by Hileman. > > Dennis D. W7QHO > Glendale, CA > ______________________________________________________________ > AMRadio mailing list > Home: http://mailman.qth.net/mailman/listinfo/amradio > Help: http://mailman.qth.net/mmfaq.html > Post: mailto:[email protected] > -- > No virus found in this incoming message. > Checked by AVG Anti-Virus. > Version: 7.0.308 / Virus Database: 266.6.2 - Release Date: 3/4/2005 > > -- > No virus found in this outgoing message. > Checked by AVG Anti-Virus. > Version: 7.0.308 / Virus Database: 266.6.2 - Release Date: 3/4/2005 > > ______________________________________________________________ > AMRadio mailing list > Home: http://mailman.qth.net/mailman/listinfo/amradio > Help: http://mailman.qth.net/mmfaq.html > Post: mailto:[email protected] >
