<html><body><div style="color:#000; background-color:#fff; font-family:arial, helvetica, sans-serif;font-size:12pt"><div id="yiv1650737284"><div><div style="color: rgb(0, 0, 0); background-color: rgb(255, 255, 255); font-family: arial, helvetica, sans-serif; font-size: 12pt;"><div id="yiv1650737284"><div><div style="color: rgb(0, 0, 0); background-color: rgb(255, 255, 255); font-family: arial, helvetica, sans-serif; font-size: 12pt;" class="yiv1650737284yui_3_7_2_18_1366647653578_54"><div id="yiv1650737284yui_3_7_2_18_1366647110851_54"><div id="yiv1650737284yui_3_7_2_1_1366647110851_3340"><span id="yiv1650737284yui_3_7_2_1_1366647110851_3341">Differences include:</span></div><div id="yiv1650737284yui_3_7_2_1_1366647110851_3339" style="background-color:transparent;"><br></div><div id="yiv1650737284yui_3_7_2_1_1366647110851_3337" style="background-color:transparent;"><span id="yiv1650737284yui_3_7_2_1_1366647110851_3338">Better filtering and
bypassing.</span></div><div id="yiv1650737284yui_3_7_2_1_1366647110851_3336" style="background-color:transparent;"><br></div><div id="yiv1650737284yui_3_7_2_1_1366647110851_3335" style="background-color:transparent;"><span id="yiv1650737284yui_3_7_2_1_1366647110851_3345">Improved LMO.</span></div><div id="yiv1650737284yui_3_7_2_1_1366647110851_3334" style="background-color:transparent;"><br></div><div id="yiv1650737284yui_3_7_2_1_1366647110851_3333" style="background-color:transparent;"><span id="yiv1650737284yui_3_7_2_1_1366647110851_3332">Elimination of a spur from the heterodyne oscillator that was causing interference to television Channel 6.</span></div><div id="yiv1650737284yui_3_7_2_1_1366647110851_3331" style="background-color:transparent;"><br></div><div id="yiv1650737284yui_3_7_2_1_1366647110851_3329" style="background-color:transparent;"><span id="yiv1650737284yui_3_7_2_1_1366647110851_3330">The easiest way to tell the units apart is to
locate V-9. In the original SB-110, V-9 is located on the actual metal chassis and in the SB-110A this tube is located on the carrier circuit board.</span></div><div></div><div id="yiv1650737284yui_3_7_2_1_1366647110851_3328"> </div><div id="yiv1650737284yui_3_7_2_1_1366647110851_3328">The SB-110A manual calls for 6AZ8 tubes, not 6AX8!</div><div id="yiv1650737284yui_3_7_2_1_1366647110851_3328"><br></div><div id="yiv1650737284yui_3_7_2_1_1366647110851_3328"><a href="http://tubularelectronics.com/Heath_Manual_Collection/Heath_Manuals_S/SB-110a/SB-110A%20Manual.pdf">http://tubularelectronics.com/Heath_Manual_Collection/Heath_Manuals_S/SB-110a/SB-110A%20Manual.pdf</a><br></div></div><div id="yiv1650737284yui_3_7_2_18_1366647110851_56"></div><div id="yiv1650737284yui_3_7_2_18_1366647110851_58"> </div><div>Glen, K9STH<br id="yiv1650737284yui_3_7_2_18_1366647110851_61"><br id="yiv1650737284yui_3_7_2_18_1366647110851_63"></div><div
id="yiv1650737284yui_3_7_2_18_1366647110851_65">Website:
http://k9sth.com<br> <div style="font-family: arial, helvetica, sans-serif; font-size: 12pt;" class="yiv1650737284yui_3_7_2_18_1366647110851_67 yiv1650737284yui_3_7_2_18_1366647653578_63"> <div style="font-family: 'times new roman', 'new york', times, serif; font-size: 12pt;" class="yiv1650737284yui_3_7_2_18_1366647110851_68 yiv1650737284yui_3_7_2_18_1366647653578_64"> <div dir="ltr"> <hr size="1"> <font size="2" face="Arial"> <b><span style="font-weight:bold;">From:</span></b> George Babits <gbabits@custertel.net><br> <b><span style="font-weight:bold;">To:</span></b> HeathKit <heath@puck.nether.net> <br> <b><span style="font-weight:bold;">Sent:</span></b> Monday, April 22, 2013 9:50 AM<br> <b><span style="font-weight:bold;">Subject:</span></b> [Heath] SB-110 vs SB-110A<br> </font> </div> <div class="yiv1650737284y_msg_container"><br>
Can anyone tell me the differences between the SB-110 and the SB-110A. According to the front bezel, mine is an SB-110. The manual I have is for an SB-110A. I note that there are a couple of 6AZ8 tubes where the SB-110A manual calls for 6AX8 tubes. Any other differences?<br><br>I spent a lot of time a couple of years ago trying to get this working. As I recall, I had the receiver working very well but wasn't getting much out of the transmitter. Finally think I have time to get back to work on it.<br><br></div> </div> </div>
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