Thanks TErry by your answer . Therefore I Believe my set can be a SP100X
Thanks again
Heriberto


"Terry O'Neill" escribió en el mensaje
.net...
Greetings Heriberto,

The SP-400X covered 540 kc to 30 mc, the SP-400SX covers 1.25 mc to 40 mc.
Those were the only two versions of the SP400 series produced. The X in
the
designation indicates that it is equipped with the crystal filter. For an
example see:

http://cgi.ebay.com/ws/eBayISAPI.dll...ategory=46 73

The SP-100 & 200versions were produced in many versions counting the
military and civilian versions. The 100 series has telltale dual toggle
switches between the bandwidth control & the Main Tuning control. See for
an example:
http://www.testequipmentcanada.com/Radios/superpro.html

Refer to this website for a chart that breaksdown the SP100/200 versions:
http://www.webex.net/~skywaves/commr...-Pro_Data.html

73

Terry
W8EJO