[Boatanchors] [Glowbugs] Question about a Heathkit crystal Frequency

[Glen Zook]

There are 3-BFO crystals used in the Heath SB-Line and HW-100 / HW-101:  For LSB 3393.6 kHz, for USB 3396.4 kHz, and for tune / CW (in the transmitter) 3395.4 kHz.

The frequencies for the LSB and USB BFO appear to be backwards from what they should be.  However, due to the mixing scheme used by Heath (and by Collins in the S-Line / KWM-2- series) the sidebands are inverted.  That is, what is transmitted / received as LSB actually starts out as USB and what is transmitted / received as USB actually starts out as LSB!
 Glen, K9STH 
Website: http://k9sth.net

      From: 'Lee. KX4TT' via Glowbugs <tetrode at googlegroups.com>
 To: 'Bry Carling' <AF4K at hotmail.com>; 'BoatAnchors QTH' <boatanchors at mailman.qth.net>; FLBOATANCHORS at yahoogroups.com; 'tetrode Glowbugs' <tetrode at googlegroups.com> 
 Sent: Tuesday, August 7, 2018 8:20 AM
 Subject: RE: [Glowbugs] Question about a Heathkit crystal Frequency
   
#yiv9023156668 #yiv9023156668 -- _filtered #yiv9023156668 {panose-1:2 4 5 3 5 4 6 3 2 4;} _filtered #yiv9023156668 {font-family:Calibri;panose-1:2 15 5 2 2 2 4 3 2 4;}#yiv9023156668 #yiv9023156668 p.yiv9023156668MsoNormal, #yiv9023156668 li.yiv9023156668MsoNormal, #yiv9023156668 div.yiv9023156668MsoNormal {margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:New serif;}#yiv9023156668 a:link, #yiv9023156668 span.yiv9023156668MsoHyperlink {color:blue;text-decoration:underline;}#yiv9023156668 a:visited, #yiv9023156668 span.yiv9023156668MsoHyperlinkFollowed {color:purple;text-decoration:underline;}#yiv9023156668 p {margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:New serif;}#yiv9023156668 span.yiv9023156668EmailStyle18 {font-family:sans-serif;color:#1F497D;}#yiv9023156668 .yiv9023156668MsoChpDefault {font-size:10.0pt;} _filtered #yiv9023156668 {margin:1.0in 1.0in 1.0in 1.0in;}#yiv9023156668 div.yiv9023156668WordSection1 {}#yiv9023156668 GM Bry,  IIRC, the HW-101 has an IF of 3395 khz…………………..so a 3396.4 khz Crystal would be about right for LSB…………3996.4 makes no sense………………..K9STH would be one person who might know this for sure; Hopefully he will pick up the white Courtesy Phone -)