[Milsurplus] BC-669 rocks

[arc5@ix.netcom.com]

<!--/* Font Definitions */@font-face	{font-family:"Cambria Math";	panose-1:2 4 5 3 5 4 6 3 2 4;}@font-face	{font-family:Calibri;	panose-1:2 15 5 2 2 2 4 3 2 4;}/* Style Definitions */p.MsoNormal, li.MsoNormal, div.MsoNormal	{margin:0in;	margin-bottom:.0001pt;	font-size:11.0pt;	font-family:"Calibri",sans-serif;}a:link, span.MsoHyperlink	{mso-style-priority:99;	color:#0563C1;	text-decoration:underline;}a:visited, span.MsoHyperlinkFollowed	{mso-style-priority:99;	color:#954F72;	text-decoration:underline;}span.EmailStyle17	{mso-style-type:personal-compose;	font-family:"Calibri",sans-serif;	color:windowtext;}..MsoChpDefault	{mso-style-type:export-only;	font-family:"Calibri",sans-serif;}@page WordSection1	{size:8.5in 11.0in;	margin:1.0in 1.0in 1.0in 1.0in;}div.WordSection1	{page:WordSection1;}-->    Most common AM freqs are 1885, 3870, 3880, 3885 and 3890.   There are local and Regional differences. Freqs that are "OEM" for the 669 are 3870 and 3890 KC.  As you noted, you can use the 3500 Rec. rock to get 3885 TX.  OEM 669 crystals take "etching-up" and "pencilling-down" better than most.
When figuring RX crystals, You can use either +385 or -385 KC.  Programmable Oscillators with a couple of caps and a small Unun work fine on the RX side.
GL OM DE Dave AB5S

    Sent from my Ain't Smart Phone.


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