The art-13 mod Iron works very well in the DX-100. The third winding used for feedfack smooths it out nice, down to 50 Hz. My Dx-100 loves it, and it fit!! The turns ratio gives me +120% modulation positive peaks. My tranny was in a 813/811A rig years ago and it sounded OK, but not super HiFi (200-5Khz), but I did not have a feedback loop around the audio at that time. I'm sure the ART-13 had no feedback loop in it... just uded the third winding to modulate the 813 screen (waste)instead of the plate dropping resistor. Neg feedback makes it sound great. George AB2KC
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of [EMAIL PROTECTED] Sent: Wednesday, July 24, 2002 3:58 PM To: amradio@mailman.qth.net Subject: Re: [AMRadio] Suggestions Please Hello all, Related to this thread -- I have several ART-13 mod. transformers: P-P 811s to 813 final. They don't look like they have a lot of core cross section. Still, it might be fun to build something up using one. Has anyone had good results with this mod iron? I don't expect a high powered rig; just somehting different from my DX-100 or Viking II. I thought I'd build up the modulator, get that working, then move onto an RF deck. Any thoughts? Thanks and 73, Ed N3CMI _______________________________________________ AMRadio mailing list AMRadio@mailman.qth.net http://mailman.qth.net/mailman/listinfo/amradio
