<html><body><div style="color:#000; background-color:#fff; font-family:arial, helvetica, sans-serif;font-size:12pt"><div style="font-family: arial, helvetica, sans-serif; font-size: 12pt; "><span>There was no identification on the instructions for adding the "improved keying" which also has the instructions for adding a "spotting" switch.</span></div><div style="font-family: arial, helvetica, sans-serif; font-size: 12pt; "><span><br></span></div><div style="font-family: arial, helvetica, sans-serif; font-size: 12pt; "><span>The information on all three of these modifications, as well as things like tube socket voltages for the DX-100, can be found at</span></div><div style="font-family: arial, helvetica, sans-serif; font-size: 12pt; "><span><br></span></div><div>http://k9sth.com/uploads/Heathkit_DX-100_mods-1.pdf<br></div><div style="font-family: arial, helvetica, sans-serif; font-size: 12pt; "> </div><div style="font-family: arial, helvetica,
sans-serif; font-size: 12pt; ">Glen, K9STH<br><br></div><div style="font-family: arial, helvetica, sans-serif; font-size: 12pt; ">Website: http://k9sth.com<br> <div style="font-family: arial, helvetica, sans-serif; font-size: 12pt; "> <div style="font-family: 'times new roman', 'new york', times, serif; font-size: 12pt; "> <div dir="ltr"> <font size="2" face="Arial"> <hr size="1"> <b><span style="font-weight:bold;">From:</span></b> "Gary H. Harmon, Jr." <gharmon@idworld.net><br> <b><span style="font-weight: bold;">To:</span></b> Heathkit1 <heath@puck.nether.net>; Heathkit2 <heathkit@mailman.qth.net>; Heathkit3 LIST <heathkit@yahoogroups.com> <br> <b><span style="font-weight: bold;">Sent:</span></b> Tuesday, August 14, 2012 4:42 PM<br> <b><span style="font-weight: bold;">Subject:</span></b> [Heathkit] DX-100 Modification Identification Question<br> </font> </div> <br>
Heath Modification Kit Model MK-1 (SB-10)<br><br>Improved Keying for the DX-100 Model MK-2??<br><br>DX-100 Loading Control Modification Model MK-3<br><br> <br><br>In my DX-100 document files I have three Heathkit mods. The MK-1 and MK-3<br>are identified and I suspect the Improved Keying modification may be MK-2.<br>Does anyone know for sure?<br><br> </div> </div> </div></div></body></html>