If it ain't broke, don't fix it. 73, Ed Richards K6UUZ Simi Valley, Ca 93065 Home of the Air Force 1 pavilion
On Tue, 23 May 2006 14:04:19 -0700 (PDT) Bill Fondren <[EMAIL PROTECTED]> writes: > Thanks for the quick response to my questions concerning this amp. > John, I was ready for some salty remarks (hihi) and I did clean my > glasses and take a second or third look at the thing. I thought I > had missed something since going to USAF Radio School in the early > 50's. Guess that tells u why I mess with vacumn tube rigs. Anyway > thought I better get some expert opinions before starting to cut and > chop to get it to a more conventional type. The construction of the > amp is above average for a homebrew rig. A couple of other things > There is a RFC choke coming off the G1 connections going to the > 10K resistor then to the grid meter (0-30ma shunted with a 50 ohm 10 > watt resistor) It does read about half scale peaking normal as u > tune the grid circuit. Also a .01 bypass cap at the meter. The > input coil is grounded in the middle through a RFC choke making a > double coil, tuned by a split stator cap. One of the tuned circuits > goes directly to the screen grids and the > other feeds the neutralizing voltage back to the input from the > plate. No bias circuits of any kind. The few times I used it I got > good reports using a Elmac AF-67 exciter. Will probably change it > to a more conventional type. Thanks again Bill K5PML > > > ______________________________________________________________ > AMRadio mailing list > Home: http://mailman.qth.net/mailman/listinfo/amradio > Help: http://mailman.qth.net/mmfaq.html > Post: mailto:[email protected] > AMfone Website: http://www.amfone.net > AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb > >
