Yes, I did finally figure that out last night. It's truly a classic design. That's why I would like to duplicate it - but in a form factor as physically close to the Millen 90801 as possible. I love the heavy metal rack-mount gear.
Thanks, 73 de, WD5JWY Dennis Pharr Oklahoma City -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Alan Cohen Sent: Monday, January 03, 2005 4:17 AM To: Discussion of AM Radio Subject: Re: [AMRadio] WTB: Millen 90801 Exciter Actually, I believe that the circuit for the Millen 90801 exciter is, in fact, in the December, 1952 issue of QST. The reason that you didn't find it, is because the the circuit is used in a complete novice transmitter project by George Grammer called, "75 Watts with an Economy Power Supply." This transmitter is one of the earliest applications of the then brand new RCA 6146 to appear in QST. It features plug-in coils with a link coupled output and inductive neutralization. In the Millen exciter they use a band switching arrangement but the circuit is electrically the same. Perhaps someone else on the list can confirm that. About five years ago I was fortunate enough to acquire a very well executed version of the transmitter described in the QST article. I built a web page describing it here: http://home.comcast.net/~acohen788/ Interestingly, I have since added a couple of other George Grammer designs to my collection. When I have the time I'll snap some pictures and add them to the page. Alan WA2DZL On Jan 2, 2005, at 7:36 PM, WD5JWY wrote: > Gentlemen: > > I'm looking for a Millen 90801 HF Exciter in reasonable condition. I > would > prefer one that is in operating condition, however I would consider > offers > on units in any shape. > > Also, if anyone has detailed technical drawings or high-quality > digital photos of the 90801, I would appreciate the information. > Since these units are so rare, I'm thinking of attempting to duplicate > the unit as closely as > possible, but I would need the above technical data to do so. This > unit was > supposedly described in the December 1952 issue of QST, however I > cannot > find it in that issue. > > I'm also interested in the following units as well: > > Millen 90831 40W Modulator > Millen 90281 HV Power Supply > > 73 > > de, WD5JWY > Dennis Pharr > Oklahoma City > > > > ______________________________________________________________ > AMRadio mailing list > Home: http://mailman.qth.net/mailman/listinfo/amradio > Help: http://mailman.qth.net/mmfaq.html > Post: mailto:AMRadio@mailman.qth.net > ______________________________________________________________ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
