|
Title: Globe King 500A Audio Mods Post by: w5dud on November 23, 2009, 01:07:39 PM Hello looking for a schematic for removing the coupletts out of a 500A,and updating the audio chain, Thanks Dudley W5DUD
Title: Re: Globe King 500A Audio Mods Post by: ke7trp on November 24, 2009, 01:21:51 PM Contact Robert w0vmc http://www.w0vmc.com/ AMfone - Dedicated to Amplitude Modulation on the Amateur Radio Bands
He has developed a schematic to remove the couplates. He will send it to you with all the resistors and caps for a few bucks. This is the way I went. Mine has full BC audio bandwidth now. It was alot easier then tracking down all the parts by hand. You can also read through an old ARRL handbook for values of each tube in line. Or the RCA tube manual. Then change parts as go. search this forum for my Globe king restoration and review article. It has helped many. Clark |